我国熟制坚果与籽类食品中霉菌及其毒素污染状况研究
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作者单位:

国家卫生健康委员会食品安全风险评估重点实验室,中国医学科学院创新单元2019RU014, 国家食品安全风险评估中心,北京 100021

作者简介:

彭子欣 女 研究员 研究方向为食品微生物 E-mail:pengzixin@cfsa.net.cn

通讯作者:

杨大进 男 研究员 研究方向为食品安全风险监测 E-mail:yangdajin@cfsa.net.cn

中图分类号:

R155

基金项目:

国家自然科学基金面上项目(32172314)


Mold and mycotoxin contamination in cooked nuts and seeds in China
Author:
Affiliation:

(NHC Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (2019RU014), China National Center for Food Safety Risk Assessment, Beijing 100021, China)

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    摘要:

    目的 调查我国熟制坚果与籽类食品中霉菌及其毒素污染状况,掌握该类食品中霉菌及真菌毒素污染风险的关联性。方法 通过采集市售商品,检测霉菌及其毒素,采用内转录间区(ITS)测序法对样品中污染的霉菌进行属鉴定。结果 19.32%(560/2 912)的熟制坚果与籽类食品霉菌计数>25 CFU/g。单一、混合坚果超过该限值的比例分别为14.78%(322/2 178)和32.56%(239/734),差异有统计学意义(P<0.05)。单一坚果中核桃超过该限值的比例最高,为24.10%(47/195),杏仁、巴达木和花生分别为17.44%(15/86)、16.81%(20/119)和16.22%(73/450),其余种类均在15%以下。对26份霉菌计数>25 CFU/g的样品进行真菌毒素检测,1份采自云南的花生检出白僵菌素污染量为16.37 μg/kg。ITS扩增子测序发现熟制坚果与籽类食品中主要污染曲霉属、交链孢霉属、念珠菌属等,和真菌毒素检出有相关性。结论 熟制坚果与籽类食品中霉菌污染较高,检出的霉菌属有产真菌毒素的风险,提示应加强该类食品中污染霉菌的监测、种属鉴定及产毒情况研究,掌握其污染途径和产毒规律,为开展风险评估,采取有效防控措施提供科学依据。

    Abstract:

    Objective The aim of this study was to investigate the mold and mycotoxin contamination status of cooked nuts and seeds in China in 2021 and to understand the correlation and risk of mold and mycotoxin contamination in such foods.Methods Samples of commercially available cooked nuts and seeds were tested for mold contamination. Internal transcribed spacer (ITS) sequencing was used to identify the genus of the contaminating mold in the samples.Results Out of the cooked nut and seed samples analyzed, 19.32% (560/2 912) had mold counts > 25 colony-forming units (CFU)/g. The proportion of mold counts > 25 CFU/g was lower in single nuts and seeds (14.74%, 321/2 178) than in mixed nuts and seeds (32.56%, 239/734, P < 0.05). Among the single nut and seed samples, walnuts (24.10%, 47/195) had the highest proportion of mold counts > 25 CFU/g, followed by almonds, spartan wood, and peanuts at 17.44% (15/86), 16.81% (20/119), and 16.22% (73/450), respectively. All other nuts and seeds had proportions below 15%. Mycotoxin analysis was performed on 26 samples with mold counts > 25 CFU/g, and beauvericin was detected at 16.37 μg/kg in one peanut sample collected from Yunnan Province. ITS amplicon sequencing revealed that the main contaminating genera in cooked nuts and seeds were AspergillusAlternaria, and Candida. The detected molds had a certain correlation with mycotoxins.Conclusion High levels of mold contamination were detected in cooked nuts and seeds, resulting in a risk of mycotoxin production in the detected foods. Thus, it is necessary to strengthen the genus and species identification and mycotoxin analysis in these types of food to understand the contamination route and the regularity of toxin production and to provide a scientific basis for risk assessment and effective prevention and control measures.

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彭子欣,杨欣,李莹,杨舒然,闫琳,杨大进.我国熟制坚果与籽类食品中霉菌及其毒素污染状况研究[J].中国食品卫生杂志,2023,35(10):1460-1467.

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  • 收稿日期:2022-11-08
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  • 在线发布日期: 2024-02-04
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