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首页> 外文期刊>Journal of Stored Products Research >Survey of mycoflora counts, aflatoxin production and induced biochemical changes in walnut kernels.
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Survey of mycoflora counts, aflatoxin production and induced biochemical changes in walnut kernels.

机译：调查核桃仁中的菌群计数，黄曲霉毒素产量和诱导的生化变化。

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摘要

Fungal infection and mycotoxin contamination in fresh and stored kernels of walnut (Juglans regia) collected from different localities of Uttaranchal (India) were investigated. Fresh samples carry a combination of field as well as storage fungi. Species of Alternaria, Aspergillus and Penicillium were predominant. Thirty-nine percent of Aspergillus flavus isolates were toxigenic and produced up to 2170 mug/l of aflatoxin B1 in the liquid media. Aflatoxin B1 was the most common mycotoxin encountered as a natural contaminant in the stored samples. Twenty-one percent of fresh samples contained aflatoxin B1 in low concentrations. The concentration of aflatoxin B1 in fresh as well as stored samples was in the range of 140-1220 mug/kg. Characteristic rotting was observed in fresh as well as stored samples. The walnut kernels exhibited significant reductions in the levels of oil, starch and protein content during fungal infection. All rights reserved, Elsevier.
机译：研究了从印度乌塔兰恰（Uttaranchal）不同地区收集的新鲜和储存的核桃仁（Juglans regia）中的真菌感染和真菌毒素污染。新鲜样品带有野外真菌和储藏真菌。链球菌，曲霉和青霉菌的种类占主要地位。 39％的黄曲霉分离物具有毒性，在液体培养基中可产生高达2170杯/升的黄曲霉毒素B1。黄曲霉毒素B1是最常见的霉菌毒素，在储存的样品中会作为天然污染物遇到。新鲜样品中有21％含有低浓度的黄曲霉毒素B1。新鲜和储存样品中的黄曲霉毒素B1的浓度在140-1220马克杯/千克的范围内。在新鲜和储存的样品中观察到特征腐烂。在真菌感染期间，核桃仁的油，淀粉和蛋白质含量显着降低。保留所有权利，Elsevier。

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