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LUAN Jie, CHEN Guidan, MO Wenxia, MENG Fanghui, LI Kun, CHEN Songwu
2025,37(7):595-604, DOI: 10.13590/j.cjfh.2025.07.001
Abstract:
Objective To investigate the content of heavy metals in dendrocalamus latifloru
s and soil of origin in the main production areas of dendrocalamus latiflorus in Guangxi， and to analyse their distribution characteristics.Methods A total of 115 soil samples of dendrocalamus latiflorus and 115 samples of dendrocalamus latiflorus were collected in the four main dendrocalamus latiflorus production areas of Nanning， Guilin， Liuzhou and Baise in Guangxi. As， Hg， Cd， Mn， Ba， Ni， Cu， Cr， Pb and Ti as 10 heavy metal elements in dendrocalamus latiflorus and soil samples were analyzed. The pollution of heavy metals in soil of origin was analyzed by the single-factor pollution index method and the Nemero composite pollution index method， and the correlation between heavy metals in jatropha dendrocalamus latiflorus and heavy metals in soil of origin and bioconcentration factor （BCF） was explored.Results All heavy metals in 115 dendrocalamus latiflorus samples did not exceed the limit values. In the soil samples from the production area， 16.5%， 3.5%， 0.9% and 1.7% of Cd， As， Cr and Ni respectively exceeded the risk screening values specified in the standard， while the elements Hg， Pb and Cu did not exceed the risk screening values， and the contamination index indicated that there was no obvious heavy metal contamination of the soil in the main production area of dendrocalamus latiflorus. The results of the correlation analysis showed that there were various complex correlations between the contents of each heavy metal element in dendrocalamus latiflorus and the contents of heavy metal elements in the soil of the corresponding origin. Jatropha shoots were generally weakly enriched for heavy metals （BCF<0.05）， with only Cu and Cd being relatively higher than the other elements.Conclusion None of the heavy metal contents in dendrocalamus latiflorus exceeded the limit values， and no obvious heavy metal contamination was seen in the soil of the origin， and there were many complex correlations between the heavy metals in dendrocalamus latiflorus and the heavy metal contents in the soil of the origin. -
ZHANG Xiaoyan, LI Yi, LIN Caiqin, ZHENG Sanyan, LIN Shaomei
2025,37(7):605-614, DOI: 10.13590/j.cjfh.2025.07.002
Abstract:
Objective To establish a method for the simultaneous determination of 29 kinds of elements in different tissues of scallops by KED-ICP-MS.Methods After microwave digestion with nitric acid and hydrogen peroxide， samples were quantified with pure water. The 29 elements， including Pb， Cd， Hg， As， Cr， Al， Mn， Cu， Ba， V， Se， Sb， Ni， Sn， Li， B， Zn， K， Na， Ca， Mg， Fe， Ti， Ag， Sr， Mo， Co， Rb and Tl in difference parts of scallops， were determined by KED-ICP-MS with the external standard method for quantification， and analyzed the distribution of elements in different tissues. Be， Sc， Ge， Rh， In， Re and Bi were chosen as internal standard elements to correct the drift of instrument signal and the matrix effects of samples.Results The linear correlative coefficients of 29 elements were higher than 0.999. The detection limits varied from 0.000 05 to 0.86 mg/kg， and the relative standard deviations were within 0.1%~18.9%， and the recovery rates were from 82.5% to 120%. The detection results of Lobster Hepatopancreas Certified Reference Material （TORT-3） and green tea （GBW 10052） were in accordance with the reference values. In this research， it has been found that the content distribution of Li、Al、Ti、V、Cr、Mn、Fe、Co、Cu、Se、Mo、Cd、Sb、Ba、Tl and Mg in scallops is as follows： closure muscle < scallop skirt < gill < gonad < viscera； the content of Zn、Sr、Ag、Hg and Ca is as follows： closure muscle < scallop skirt < gonad < gill < viscera； K and Rb are in the order of gill < scallop skirt < viscera < gonad < closure muscle.Conclusion The method is simple， rapid， specific， sensitive and accurate， and can be used for the determination of 29 elements in different tissues of food such as scallops.
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CHEN Jing, TAN Jinghui, XIA Yuxin
2025,37(7):615-621, DOI: 10.13590/j.cjfh.2025.07.003
Abstract:
Objective To establish an ultra high performance liquid chromatography tandem mass spectrometry method for determination of 6 alternaria toxins in peanuts by solid phase purification column purification.Methods The sample was extracted with acetonitrile-water-formic acid， purified through solid phase purification columns. Using a mobile phase of methanol-1.0 mmol/L ammonium bicarbonate solution， a HSS T3 column for separation， and ESI- mode for detection， and determined by UPLC-MS/MS， with internal standard quantification.Results The six types of alternaria toxins showed good linear relationships within their respective determination ranges （all r values were greater than 0.999）， the detection limit of this method were in the range of 0.02 to 0.23 μg/kg， the relative standard deviation was less than 3.5%， and the recoveries were 87.4%-117.7%.Conclusion This method is simple， fast， has good purification effects， high sensitivity， and good reproducibility， making it suitable for the rapid detection of residues of six types of alternaria toxins in peanuts simultaneously.
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LI Yanyan, BAI Jichao, ZHAO Linna, GE Qiuhui, LIU Feng, ZHANG Baigang, CUI Shenghui
2025,37(7):622-628, DOI: 10.13590/j.cjfh.2025.07.004
Abstract:
Objective To explore the differences in phenotypic characteristics of Staphylococcus aureus from different sources on Baird-Parker agar medium （hereinafter referred to as BP medium） produced by four manufacturers， so as to provide data support for the optimization and improvement of the test method.Methods The selected Staphylococcus aureus （n=62） was confirmed， its growth characteristics on BP medium were analyzed， and the differences in colony occurrence time， phenotype and growth rate of four brands of BP medium and Staphylocophilia aureus chromogenic medium were compared.Results All 62 strains were confirmed to be Staphylococcus aureus by MOLDI-TOF and plasma coagulase assays. After 20-24 h of culture on BP medium， all strains （n=62） did not show the typical colony characteristics of a “clear band” on the periphery of the colony given in GB 4789.10—2016， and some strains had atypical colony phenotypes with weakened and missing precipitation rings and zona pellucida even after 44-48 h of culture. The growth rate of a few strains on different brands of BP medium was less than 0.7， and there were significant differences in the colony appearance time and growth rate of Staphylococcus aureus on different brands of BP medium （P<0.01）. The colonies of Staphylococcus aureus on the chromogenic plate were blue-green， with no obvious phenotypic difference， and the growth rate was greater than 0.7.Conclusion The growth characteristics of Staphylococcus aureus on BP medium are closely related to the culture time and medium quality， and the uncertainty caused by the use of a single selective medium should be considered in the revision of GB 4789.10—2016， and a second selective medium should be introduced into the methodology to enhance the reliability and rigor of the test results.
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WANG Yinuo, WEI Maolin, WANG Jinfeng, JIANG Yanfen, SUN Xiaoxia, HAN Qin, XU Xiangdong, WANG Jianchang
2025,37(7):629-636, DOI: 10.13590/j.cjfh.2025.07.005
Abstract:
Objective To investigate the contamination of Listeria monocytogenes （L. monocytogenes） in commercially available fresh enoki mushrooms in Shijiazhuang City， and to analyze the genomic characterization of the strains.Methods A total of 49 samples of commercially available fresh enoki mushrooms were tested and characterized for L. monocytogenes， among which 18 strains of L. monocytogenes were isolated. All isolates were subjected to whole-genome sequencing to determine strain sequence type （ST）， clonal complex （CC）， lineage， and serogroup， using the BIGSdb-Lm database. The presence of virulence genes and drug resistance genes was predicted using the VFDB virulence gene database and the CARD database.Results Eighteen strains of L. monocytogenes were isolated from 49 samples， with a detection rate of 36.7%. Whole-genome sequencing results showed that all 18 isolated strains belonged to lineage Ⅱ. Among them， 11 strains belonged to ST8， CC8 and serogroup 1/2a， while 7 strains belonged to ST9， CC9， and serotype 1/2c. All isolated strains carried the LIPI-1 virulence island genes and some genes in LIPI-2. Strain Lm02 carried the lnu gene， which mediates resistance to lincosamide antibiotics； strain Lm05 carried the mprF gene， which mediates resistance to peptide antibiotics； 15 strains carried both the lnu and mprF genes； in addition， 7 strains carried the norB gene， which mediates resistance to fluoroquinolone antibiotics.Conclusion There is a risk of L. monocytogenes contamination in fresh enoki mushrooms sold in Shijiazhuang City. It is essential to strengthen the detection and control of L. monocytogenes to ensure consumer health.
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XIE Yanxiang, LIU Fengjiao, FAN Ke, LIN Yongtao, ZENG Xiaoyuan, XIE Chaomei, LI Zhaomin, LIU Sunian
2025,37(7):642-648, DOI: 10.13590/j.cjfh.2025.07.007
Abstract:
Objective To investigation and analysis the pollution status and dietary exposure risk of perfluorinated and polyfluorinated alkyl compound （PFASs） in animal-derived foods sold in Hu’nan Province.Methods From 2023 to 2024，a total of 266 samples of animal-derived foods including aquatic products， livestock meat， eggs， dairy products were randomly collected in Hu’nan Province. The content of 23 types of PFASs in the samples was determined by UPLC-MS/MS，and the dietary exposure of PFASs in animal derived foods was evaluated by the method of point estimation.Results Seventeen types of PFASs were detected in 202 samples，with a total detection rate of 75.9%. The overall detection rates of various types of food were ranked from high to low as follows： aquatic products （100%）>eggs （91.6%）> livestock meat （80.5%）>dairy products （24.2%），and the difference was statistically significant （χ2=94.69， P<0.05）；the content range of 23 PFASs was 0.01-8.17 ng/g，with the highest average PFOS content in aquatic products being 0.42 ng/g， the HQ evaluated from the total assessment of four PFASs including PFOA， PFNA， PFHxS， and PFOS in various foods were all less than 1.Conclusion The contamination of PFASs in animal derived food sold in Hu’nan Province was relatively common，but the degree of contaminationwais relatively light， and the impact on residents’ health was limited.
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CHEN Si, CHEN Yu, XU Jing, LI Zhenyi
2025,37(7):649-654, DOI: 10.13590/j.cjfh.2025.07.008
Abstract:
Objective To develop and validate a wild mushroom consumption risk perception scale for college students based on Protection motivation theory （PMT）.Methods The scale was developed through literature review and expert consultation， then administered to 216 college students. Exploratory and confirmatory factor analyses examined structural validity， while Cronbach’s α assessed internal consistency reliability. Composite reliability （CR） and average variance extracted （AVE） evaluated convergent and discriminant validity.Results The final scale contained 21 items across two dimensions （threat appraisal and coping appraisal） with seven factors. Overall Cronbach’s α was 0.851， with all dimensional α coefficients >0.726. KMO value was 0.826 with significant Bartlett’s test （P<0.001）. All factors showed AVE >0.5， CR >0.75， and MSV<AVE， meeting convergent and discriminant validity requirements. The scale effectively differentiated groups with varying cognitive levels （P<0.01）.Conclusion The PMT-based scale demonstrates good reliability and validity for assessing college students’ wild mushroom risk perception.
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LIU Li, HUANG Yulan, ZHAO Wenxia, LIU Shiyan, YANG Xiaorong
2025,37(7):655-658, DOI: 10.13590/j.cjfh.2025.07.009
Abstract:
Objective Collected the problems and suggestions in the implementation of the National Standard for Food Safety Microbiological Inspection of Staphylococcus aureus （GB 4789.10—2016） to provide reference for the revision of the standard.Methods The problems encountered in the use of the standard and the opinions and suggestions for the subsequent revision of the standard were collected through the network questionnaire.Results Ninety-two valid questionnaires were received. It included 61 effective comments and suggestions on the subsequent revision of the standard， mainly including the optimization of the “first method of Staphylococcus aureus qualitative test” and the “second method of Staphylococcus aureus plate counting method”， as well as added selective media， the optimization of the test process， and added the test plate counting method.Conclusion GB 4789.10—2016 standard takes a long time to implement， and it should be appropriately revised according to the feedback and the development of current technology.
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CHEN Minjing, YANG Yanyan, WANG Bin, WANG Xiuli
2025,37(7):659-667, DOI: 10.13590/j.cjfh.2025.07.010
Abstract:
Under the guidance of the “Healthy China 2030” Outline， China is gradually promoting the development of food education. As a key means to improve the health literacy of the whole people and prevent chronic diseases， this paper compares and analyzes the food education models of Japan and the United States， explores their similarities and differences in policy formulation， education implementation and social participation， and provides a reference for the development of food education in China. The study found that Japan has established a comprehensive food education framework to promote cultural inheritance and social responsibility through systematic legislation； the United States has passed a series of bills to support the school lunch program， focusing on individual health management and behavior change， and solving health crises through precise intervention. Despite different paths， food education practices of the two countries have shown a positive impact on specific health indicators. China should speed up the legislative process， promote a deeper understanding of food education， build stronger coordination mechanisms， and prioritize talent training and technology empowerment， jointly build a food education system that conforms to national conditions， promote the implementation of policies， and provide solid theoretical and practical support for achieving the grand goal of a healthy China.
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ZHUANG Maoqiang, WANG Xinyi, FENG Xueying, ZHAO Zhongjun, YU Jingping, ZHUANG Deyu, XIAO Peirui, JIANG Ying, SONG Jian, WANG Kebo, CHU Zunhua, ZHANG Lijun
2025,37(7):668-673, DOI: 10.13590/j.cjfh.2025.07.011
Abstract:
Objective To investigate the epidemiological characteristics of poisonous mushroom poisoning in Shandong Province and provide evidence for its prevention and control.Methods Descriptive statistical methods were used to analyze epidemiological data on poisonous mushroom poisoning incidents in Shandong Province reported through the “Foodborne Disease Outbreak Surveillance System” from 2012 to 2024.Results From 2012 to 2024， a total of 290 poisonous mushroom poisoning incidents were reported in Shandong Province， with 779 cases and 26 deaths， resulting in a case-fatality rate of 3.34%. Most poisoning incidents occurred between July and September （82.76%， 240/290）. Yantai， Weifang， and Weihai were high-incidence areas （56.21%， 163/290）. households were the main sites of outbreaks （98.62%， 286/290）. Most cases aged ≥20 years （89.86%， 700/779）， while most deaths aged ≥60 years （42.31%， 11/26）. Only 35 outbreaks （12.07%） could identify the specific mushroom species， mainly from the Amanitaceae， Boletaceae， and Lepiotaceae families.Conclusion Poisonous mushroom poisoning is a leading cause of death from foodborne diseases in Shandong Province. Before the high-incidence season， targeted public education emphasizing refraining from picking， purchasing， selling， or consuming wild mushrooms should be conducted in key areas and among key populations. Concurrently， there is an urgent need to enhance rapid mushroom identification capabilities to support timely clinical diagnosis and evidence-based treatment.
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CHEN Jinkun, ZHANG Qinchao, HE Qinfen, CHEN Jiming, JIANG Zhuojing, ZHOU Liangkang, TANG Shijie
2025,37(7):674-680, DOI: 10.13590/j.cjfh.2025.07.012
Abstract:
Objective To characterize the etiological characteristics， molecular epidemiology and antimicrobial resistance of Vibrio parahaemolyticus from outbreaks cases in Shaoxing City from 2022 to 2023.Methods The Vibrio parahaemolyticus strains were isolated from five outbreak events from 2022 to 2023. Serotyping， molecular typing， drug resistance testing， virulence gene detection and bioinformatics analysis were performed by slide agglutination， pulsed field gel electrophoresis （PFGE）， broth microdilution， multiple fluorescent PCR and whole genome sequencing methods.Results The 36 strains of Vibrio parahaemolyticus were isolated from 1 leftover dinner ingredient， 2 kitchen swabs （cloth and cutting board） and 33 clinical anal swabs associated with outbreak. These isolates comprised ten different serotypes， with O10：K4 being the predominant one. All strains were divided into 11 band types， and the main PFGE type was S2. Among these strains， higher rates of resistance to cefazolin （36/36）， Ampicillin （9/36）， streptomycin （2/36） were found. All strains were positive for tlh and negative for trh. The 31clinical isolates and 1 environmental isolate carried tdh gene. 4 known ST types， 2 new ST types and 23 core genome MLST （cgMLST） types were identified by sequence analysis. Thirty-four strains carried the resistant gene， mainly blaCARB-22.Conclusion Five foodborne disease outbreaks caused by Vibrio parahaemolyticus were occurred in Shaoxing from 2022 to 2023. O10：K4 was the predominant serotypes of outbreaks. The isolates were all resistant to cefazolin. There is a high homogeneity between the strains of different outbreaks， indicating persistent sources of contamination ignored by traditional methods. It is necessary to strengthen the tracing and epidemiological investigation of Vibrio parahaemolyticus in this region.
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CAI Xuyue, LU Xinchen, LU Qi, LIU Hanzhao, YU Siyu
2025,37(7):681-690, DOI: 10.13590/j.cjfh.2025.07.013
Abstract:
Foodborne parasitic diseases is one of the important public health problems and also a new challenge for the prevention and control of parasitic diseases. Its characteristics of long incubation time in humans， with no vaccine， no lifelong immunity and seriously harmful to the health of the population， makes prevention particularly difficult. Rapid and accurate detection of parasites in food is the trend of their future prevention and control. This article reviews the techniques used in the detection of foodborne parasites， including pathogen detection， immunological detection， molecular biology detection， etc.， so as to promote the wide application of advanced technology in food detection and ensure food safety.
Volume 37,2025 Issue 7
Study Reports
Experimental Technique and Method
Investigation
Risk Assessment
风险交流
Food Safety Standard and Administration
Applied Nutrition
Foodborn Disease
Review
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Research on the Pollution Status and Control Measures of Phthalate Plasticizers in Food
ZHAO Zhen, WAN Peng, GAO Yu-Wei, WU Xiao-Li, FAN Haibo, ZHAO Pengtao
Abstract:
With the continuous improvement of living standards, food safety issues have increasingly become a focal point of social concern, among which the problem of plasticizer contamination in food has garnered significant attention. Plasticizers are primarily used as plasticizers and softeners in products such as plastics and rubber. Among global plasticizer products, phthalate esters rank first in production, accounting for approximately 80% of the total output. The widespread application of products containing phthalate ester plasticizers (such as plastic bags, bottles, and cosmetics) in human production and daily life leads to inevitable human exposure through ingestion, inhalation, and dermal contact. As a result, phthalate ester plasticizers have become one of the most prevalent organic pollutants worldwide. This paper systematically elaborates on the physicochemical properties and health hazards of phthalate ester plasticizers, and reviews the limit standards for phthalate esters in food and food contact materials established by major countries and regions worldwide. Based on case analyses of typical plasticizer contamination incidents, the study focuses on proposing management recommendations for controlling phthalate esters in food from multiple dimensions, including raw material and packaging material control, production process management, and finished product quality monitoring. The aim is to provide technical references for food enterprises in constructing a plasticizer prevention and control system.
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research of
Abstract:
Listeria monocytogenes (L. monocytogenes) is an very important foodborne pathogens, which poses severely threaten for food safety. Recently, the contamination events of L. monocytogenes in edible fungi occured frequently, which arising a widely concerned and causing certain negative impacts. This paper systematically reviewed the current contamination status, the biological characteristics, the detection technologies and comprehensive prevention and control strategies of L. monocytogenes in edible fungi, and compared the difference of the limit standards of L. monocytogenes in edible fungi and products between home and aboard. The aiming of this paper is providing theoretical basis and technical reference for improving the safety level of edible fungi in my country, protecting consumer health, and improving international reputation.
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ZOU Zhi-fei, PU Min, LI Jian-jun, CHEN Yong-hong
2010,22(2):112-120, DOI:
Abstract:
Food color was divided into three categories,that was tar pigments, natural pigments and others. Edible tar pigment was classified to azo, triarylmethane, xanthene, fluorescent ketone, quinoline derivatives and indigo dye, and natural pigment was classified to tetrapyrroles (porphyrins) derivatives, isoprene derivatives, anthocyanin derivatives, ketone derivatives, quinone derivatives and the others according to their chemical structure.There are INS,E-number,C.I and the code about synthetic pigment in some countries in food color.The regulations and the use varieties about food color of China, CAC, Russia, EU, US, Canada, Japan, Hong Kong , Macao and China Taiwan was introduced respectively. Comparison analysis about differences in formulation of food additicve standard, prohibition about colour variety, attitude about usage of edible tar colour, and colour variety (tar colur,natural colour and others),scope and limits about color usage were performed with comparative analysis. Color usage in the produce of export food in accordance with standard of destination , focus on variety and limit of colour in import food according to their sources was proposed, and trends about usage of food color was Prospect ed also.
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Wang Huali, Zhang Jiyue, Zhang Jianbo
2011,23(6):571-575, DOI:
Abstract:
According to The Law of Food Safety,the related requirements of the State Council and the Ministry of Public Health,and the program of systemic revision of national food safety standards,the Hygienic Standards for the Use of Food Additives(GB 2760—2007) was revised by the National Institute of Nutrition and Food safety of China CDC in 2011.The revised parts are mainly on the regulations of using food additives,food processing aids and flavorings.The revision of the National food safety standard-...
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2004(4), DOI:
Abstract:
The comparative study was conducted on the regulations and standards in related with health food or health claim control in the countries or regions of Chinese Mainland, Australia, European Union, Japan, USA and Chinese Taipei, taking Codex Alimentarius Commission as reference. The analysis is focus on the similarities and differences on the part of the definition, legal status, the requirements for product composition and form and the procedure of safety and functional evaluation among these countries or regions, in an attempt to find out the background information and scientific evidence for the relevant regulations and standards. The administration patterns of health food or health claim by the authorities of individual countries or regions, i.e. whether it is a pre-market approval system or a preview (pre-market registered) system, been elaborated and analyzed. To the improvement of health food control system in China, some proposals and recommendations were made based on the analysis of the merits and defects thereof, and technical evidence was provided for the international coordination in the future.
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HE Qing-hua, WU Yong-ning, YIN Yu-long
2007(5), DOI:
Abstract:
If over-dose biogenic amines were eaten, it may have deleterious impacts on human and animals. To illustrate the effects of biogenic amines in food on human, the source, influential factors, metabolism and toxicological research of biogenic amines were briefly reviewed.
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2011,23(1):13-16, DOI:
Abstract:
The result of food safety risk assessment is the scientific basis for formulating the food safety standards and for exercising food safety supervision and administration. To exert the effects of food safety risk assessment in supervision and administration, some countries established specific agencies for food safety risk assessment, as well as in China with National Food Safety Risk Assessment Expert Committee. Despite that there is still a long way to go for China in food safety risk assessment compared to developed countries, the technologies applied in formulating food safety standards, handling of food safety accidents and risk communications exerted significant effect. However, we still need to promote constructions building in system of food safety risk assessment from the aspects of organizations, capacities and technologies in risk assessment and human resources considering the situation of food safety and needs of food safety supervision.
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ZHANG Xi-meng, ZENG Jing, WEI Hai-yan, FU Pu-bo, HAN Xiao
2013,25(4):320-323, DOI:
Abstract:
To investigate antibiotic resistance of Cronobacter sakazakii isolated from imported dairy products. Methods100strains of Cronobacter sakazakii were tested for antibiotic susceptibility by disk diffusion recommended by the National Committee of Clinical laboratory Standard. Results All strains were sensitive to Mezlocillin, Imipenem, Meropenem, Gentamicin, Amikacin, Kanamycin, Tobramycin, Chloramphenicol, Cefepime, Cefoperazone, Cefotaxime Sodium, Ceftazidime, Pentahydrate, Ciprofloxacin and Norfloxacin, while resistant to Proctaphlin Sodium. The ratio of resistant strains to Ampicillin, Cefalotin, Cefazolin Sodium, Sodium and Tetracycline was 65%, 17%, 3% and 2%, respectively. The ratio of intermediate resistant strains to Ampicillin, Cefazolin Sodium, Cefalotin Sodium, Ceftriaxone Sodium, Tetracycline was 25%, 23%, 6%, 2% and 1% respectively. 13strains were multiresistant to 3kinds of antibiotics and 4strain was multiresistant. ConclusionCronobacter sakazakii strains isolated from imported dairy products were susceptible to most of the tested antibiotics, but resistance were increasing. In this study, All drug resistant strains to oxacillin. Hereby, the issue of Cronobacter sakazakii multiresistance should arouse abroad attention worldwide.
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SUN Yan-bin, SUN Ting, DONG Shu-xiang, LI Shi-kai, ZHONG Qing, ZHANG Jun
2015,27(4):441-446, DOI: 10.13590/j.cjfh.2015.04.020
Abstract:
To understand the distribution characteristics of heavy metal contamination in dairy products, and to evaluate the status and the extent of heavy metal contamination.Methods The contents of Pb, total-Hg, Cd, Cr and total-As in raw milk, fermented milk, sterilized milk, infant formula and milk powder during 2012-2013 were detected. Single factor contamination index method and comprehensive contamination index method of Nemerow were used to evaluate the contamination level according to the grading standard of agriculture product quality. Results The detection rate of Pb, total-As, total-Hg, Cd and Cr were 14.0%(21/150), 24.7%(37/150), 82.0%(109/133), 26.3%(35/133)and 72.9%(43/59) in dairy products, respectively. Pb in raw milk and Cd in sterilized milk were not detected. The mean, P75 and P95 of total-Hg in raw milk were higher than the limit. The P95 of total-Hg in fermented milk and sterilized milk and Cd in milk powder were higher than the limit. The detection rate and single factor contamination index of total-Hg were the highest in raw milk, fermented milk and sterilized milk, which indicated there was severe contamination in the raw milk(PHg>1) and mild contamination in fermented milk (PHg>0.6). The detection rate of Cr was the highest in infant formula and milk powder, while single factor contamination index of Cd was the highest. The heavy metal contamination in raw milk ranked the first with Pn=0.754, reaching mild level of contamination. The heavy metal contamination in dairy products could be lined in a decreasing order of raw milk, fermented milk, sterilized milk, milk powder and infant formula.Conclusion Four kinds of dairy products were at the safe level of heavy metal contamination. Total-Hg was the dominant heavy metal contamination in liquid milk, while Cd in solid milk. Single factor contamination index and comprehensive contamination index of total-Hg in raw milk indicated that measures should be taken to prevent the contamination.
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2012,24(5):438-440, DOI:
Abstract:
目的优选QuEChERS方法中黄瓜拟除虫菊酯类农药残留净化剂的最佳组合。方法采用正交实验法,以农药加标回收率(气相色谱法)为指标,考察净化剂PSA(N-丙基乙二胺)、C18(C18烷基-硅胶)、GCB(石墨化炭黑)三因素的影响。结果重复试验表明,10 g黄瓜2 ml定容液净化剂的最佳组合是A2B1C2,即0.075 g PSA,0.025 g C18,0.050 g GCB。结论正交试验法用于优选蔬菜中农药残留检测的QuEChERS净化剂组合,既可节省试剂,又能满足检测需要。
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LEI Xiaoling, ZENG Shaokui, JIANG Zhihong, ZHANG Chaohua, WU Hongmian
2005(1), DOI:
Abstract:
The microbe change in export frozen shrimp(shrimp meat,headless shrimp)at different stages of processing was reported.The bacterial contamination of utensils,equipment environment was checked.The results demonstrated that the aerobic plate counts of export frozen shrimp generally were up to the standard.Coliforms sometimes exceed the standard.Pathogens were not detected.Aerobic plate counts of utensils and equipment often go beyond the standard.
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ZHOU Su-juan, , , WAN Chao, BAI Hong
2010,22(2):143-146, DOI:
Abstract:
Objectives To investigate the current status of single raw material health foods registration in China. Methods The registration of 419 single raw material health foods from the State Food and Drug Administration (SFDA) in the period of 2003-2007 were studied and analyzed, including the registration number, function claims, material categories and active ingredients, etc. Results The number of single raw material health foods accounted for 13.1% of total registered functional foods in this period. Half of the function claims were enhancing immune function. The active ingredients were nonspecific. The most common ingredients were polysaccharide, total saponins and total flavonoid. The chief categories of component were traditional Chinese material, foodstuff, edible fungi and algae. Conclusions The use of extracted materials might bring potential quality and safety issues because of no unified standards and processing technique. It is necessary to standardize management for extracted materials urgently. Take the single raw material products as a trial to seek a simplified mode for the registration and management of health foods.
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2004(5), DOI:
Abstract:
The comparative study was conducted on the regulations and standards in related with health food or health claim control in the countries or regions of Chinese Mainland, Australia, European Union, Japan, USA and Chinese Taiwan, taking Codex Alimentarius Commission as reference. The analysis is focus on the similarities and differences on the part of the definition, legal status, the requirements for product composition and form and the procedure of safety and functional evaluation among these countries or regions, in an attempt to find out the background information and scientific evidence for the relevant regulations and standards. The administration patterns of health food or health claim by the authorities of individual countries or regions, i.e. whether it is a pre market approval system or a preview (pre market registered) system, have been elaborated and analyzed in this tert. To the improvement of health food control system in China, some proposals and recommendations were made based on the analysis of the merits and defects thereof, and technical evidence was provided for the international coordination in the future.
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ZHANG Wen-zhong, LI Ning, LI Rong
2008(3), DOI:
Abstract:
目的探索反式白藜芦醇经口摄入后，在体内的雌激素作用和剂量一反应关系。方法选用19日龄未成年大鼠做子宫增重试验，分别经灌胃给予0．1、0．3、0．6和1．0g／kgBW的白藜芦醇，以3．0p∥kgBW的雌二醇为阳性对照，并设立水和油的阴性对照组，所有剂量组连续灌胃3d。实验结束称量子宫的湿重和干重，对卵巢、子宫和阴道进行组织病理学检查，并测量子宫内膜上皮细胞高度。结果和对照组比较，白藜芦醇对子宫重量无影响；组织病理学结果显示，1．0g／kgBW白藜芦醇剂量组的子宫轻度增生，0．3、0．6和1．0g／kgBW白藜芦醇剂量组的阴道轻度增生，无剂量-反应关系；受试物组子宫内膜上皮细胞高度无明显变化。结论白藜芦醇经口摄入时雌激素作用较弱，且无剂量-反应关系。
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ZHANG Li-wei, ZHAO Hong-jing, BAI Hong, WAN Chao
2008(3), DOI:
Abstract:
目的总结我国保健食品法律、法规、标准体系发展历史与现状，为未来发展提供建议。方法系统收集我国自1995年《中华人民共和国食品卫生法》首次赋予保健食品法律地位以来有关保健食品生产、销售、流通、监管环节的法律法规，进行纵向与横向的比较分析。结果从管理角度讲，我国保健食品经历了《保健食品管理办法》及《保健食品注册管理办法》两个时期，经历了一个逐步发展完善的过程，在立法过程中体现了“公平、公正、便民、高效和救济”等法制理念的不断进步。现在，我国保健食品法律、法规、标准在产品生产、市场、监控、评估4个方面基本形成了体系，并在新功能、新原料开发方面采取了更为开放的姿态。结论今后我国应加强技术性法规标准的建设，完善《保健食品注册管理办法》相应配套办法，进一步理顺各部门食品安全监管职能，明确责任，注重部门规章的衔接，进一步以法律、法规、标准体系建设整顿市场秩序，引导保健食品行业健康有序地发展。
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2012,24(5):474-478, DOI:
Abstract:
Based on the analysis of microbiological criteria for ready-to-eat foods in Codex Alimentarius Commission,the European Union,Australia,New Zealand,England and HongKong China,the article provides recommendations for the elaboration of microbiological criteria of Chinese national food standard.
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2007(4), DOI:
Abstract:
To accurately understand the inorganic arsenic origin in seafoods and scientifically appraise the quality of seafood products, some problems on arsenic chemical and speciation form, background value, inorganic arsenic and determination of arsenic in marine organisms were discussed. References were provided for determination of inorganic arsenic in seafoods.
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2011,23(5):472-477, DOI:
Abstract:
As indicator organisms,standards for aerobic plate count,coliforms,Escherichia coli,enterobacteriaceae applied in each country were different.Based on the comparison and analysis of microbiological criteria of foods in Australia,New Zealand,European Communities,Canada and Hong Kong,recommendations and technical basis for the elaboration of general microbiological criteria of China’s national food safety standards were provided. 更多还原
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Gan Binbin, Liu Zhanhua, Li Shaohao
2011,23(6):531-533, DOI:
Abstract:
Objective To establish a method for the determination of glucosamine hydrochloride in health food by HPLC.Methods Samples were extracted ultrasonically with water and separated on a CAPCELLPAKCR column(4.6 mm×150 mm,5 μm);the mobile phase consisted of 25 mmol ammonium acetate+acetonitrile(in 0.1% formic acid)(25+75,V/V).The flow rate was 1.0 mL/min;the detection wavelength was 200 nm.Results The standard curve of glucosamine hydrochloride was linear over the range in 0.2~26.0 μg(r=0.999 982).The...
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ZHANG Lei, ZHAO Yun-feng, ZHENG Hong-guo, ZHANG Lei, LIU Xiao, ZHAO Yun-feng, MOU Shi-fen, ZHENG Hong-guo, WU Yong-ning
2008(4), DOI:
Abstract:
目的建立同时测定食品中硝酸盐和亚硝酸盐的离子色谱方法。方法采用超声提取、固相萃取柱净化的方法对试样进行前处理，高容量阴离子交换色谱枉分离，抑制型电导检测器检测。结果亚硝酸盐和硝酸盐的检出限分别为0.005mg／L和0.008mg／L。回收率均在80％以上，RSD小于10％。结论该方法简便快捷、准确可靠，适用于多种食品基质中亚硝酸盐和硝酸盐的分析。
