Determination of toxigenic fungi and aflatoxins in nuts and dried fruits using imaging and spectroscopic techniques.
Determination of toxigenic fungi and aflatoxins in nuts and dried fruits using imaging and spectroscopic techniques.
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DOI：
10.1016/j.foodchem.2018.01.076
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发表时间：
2018-06
期刊：
影响因子：
8.8
通讯作者：
Qifang Wu;Lijuan Xie;Huirong Xu
中科院分区：
文献类型：
--
作者：
Qifang Wu;Lijuan Xie;Huirong Xu
坚果和干果含有丰富的营养物质，因此由于恶劣的天气、加工和储存条件，极易受到产毒真菌和黄曲霉毒素的污染。成像和光谱技术已被证明是湿化学方法的潜在替代工具，用于有效和非破坏性地测定真菌和毒素污染。因此，本文综述了近红外光谱(NIRS)、中红外光谱(MIRS)、常规成像技术(彩色成像(CI)和高光谱成像(HSI))以及荧光光谱和成像(FS/FI)等常用食品安全检测技术的发展和应用现状。在对受污染的坚果和干果的静态和在线实时检测中，可以找到有趣的分类和检测结果。尽管这些技术比传统方法有许多优点，但在毒素的异质性分布、背景成分干扰、模型稳健性、检测极限、分选效率以及仪器开发方面仍然存在挑战。
Nuts and dried fruits contain rich nutrients and are thus highly vulnerable to contamination with toxigenic fungi and aflatoxins because of poor weather, processing and storage conditions. Imaging and spectroscopic techniques have proven to be potential alternative tools to wet chemistry methods for efficient and non-destructive determination of contamination with fungi and toxins. Thus, this review provides an overview of the current developments and applications in frequently used food safety testing techniques, including near infrared spectroscopy (NIRS), mid-infrared spectroscopy (MIRS), conventional imaging techniques (colour imaging (CI) and hyperspectral imaging (HSI)), and fluorescence spectroscopy and imaging (FS/FI). Interesting classification and determination results can be found in both static and on/in-line real-time detection for contaminated nuts and dried fruits. Although these techniques offer many benefits over conventional methods, challenges remain in terms of heterogeneous distribution of toxins, background constituent interference, model robustness, detection limits, sorting efficiency, as well as instrument development.