中文摘要：花生是一种重要的经济作物，通常用来生产食用油；但是，它们容易受到产黄曲霉毒素(AFT)真菌的污染。常用处理植物油的方法是利用高温（＞100℃）对AFTs进行热解。但高温经常对产品质量产生负面影响。本研究对脉冲光作为一种降解花生油中AFTs的方法进行了评估。研究认为，在工业化生产中，PL可以为AFT污染的食用油提供一种经济的处理方法。
外文摘要：Peanuts are an economically significant crop that is commonly used for edible oil production; however, they are prone to contamination by aflatoxin (AFT)-producing fungi. Common methods to treat edible oils for AFTs often utilize high temperatures (> 100 °C) to thermally degrade the toxins. However, high temperatures often negatively impact product quality. In this study, pulsed light (PL) was assessed as a possible method to degrade AFTs in peanut oil. A pilot-scale PL applicator was used to treat 5-mL samples of peanut oil of 10 mm thick. Samples were treated for 1 to 10 min with or without temperature reduction (TR). The sample containers were placed in an ice water bath to mitigate increases in oil temperatures for the TR samples. The physical, color, and chemical quality parameters (peroxide value, free fatty acid, acidity value, and oxidative stability index (OSI)) of the oil were assessed in comparison to controls. Results show that significant AFT destruction was achieved using PL. There was a significant difference between reduction achieved when TR was employed, likely due to the combined effect of photochemical and thermal treatment. TR samples treated for 400 s experienced an AFT reduction of 48.4%, while those treated 600 and 800 s achieved 55.6 and 78%, respectively. The samples treated with TR showed lower quality degradation when compared to peanut oil samples treated without TR for equivalent treatment times. Using TR, PL resulted in a significant reduction of AFT, without losses in quality typically associated with thermal methods. At industrial scale, PL may offer an economical treatment of AFT-contaminated oil.
外文关键词：Aflatoxin B-1；Aflatoxin B-2；Pulsed light；Degradation；Peanut oil
作者：Abuagela, MO；Iqdiam, BM；Baker, GL；MacIntosh, AJ
作者单位：Univ Florida
期刊名称：FOOD AND BIOPROCESS TECHNOLOGY
期刊影响因子：2.574
出版年份：2018
出版刊次：7
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