Ultrasound‐Assisted Detoxification of Free Gossypol from Cottonseed Meal

棉酚 棉籽粕 戒毒(替代医学) 化学 超声波 超声 响应面法 餐食 色谱法 核化学 食品科学 生物化学 原材料 豆粕 有机化学 医学 病理 放射科 替代医学
作者
Chunhua Dai,Liuping Zhang,Haile Ma,Xin Yin,Ronghai He,Jingya Qian
出处
期刊:Journal of Food Process Engineering [Wiley]
卷期号:40 (1) 被引量:5
标识
DOI:10.1111/jfpe.12265
摘要

Abstract To decrease NaOH consumption in the process of removal of free gossypol ( FG ) in cottonseed meal ( CSM ), ultrasound was applied in the detoxification experiments. The effects of various factors on the removal efficiency were studied by single‐factor experiments, and detoxification conditions were optimized by response surface methodology. The result indicated that removal ratio of FG increased with increasing NaOH concentration (0.5–1.5 g/L), ultrasonic power (0–1,000 W), treatment time (0–20 min) and pulse duration (1–5 s); however, further increase of pulse duration (6–7 s) resulted in a decrease. The removal ratio even reached 95.82 ± 2.75% ( n = 3) under optimal conditions of NaOH concentration (1.5 g/L), sonication time (16 min) and pulse duration (5 s). The Box–Behnken design generated satisfactory mathematical models that accurately explained the behavior of the system, allowing one to predict the removal efficiency of FG in CSM . Practical Applications Cottonseed meal ( CSM ) has long been considered as a good source of protein for animals. However, a polyphenolic compound, particularly free gossypol ( FG ), that existed in CSM limits its application as feeding stuffs. The findings in the present study demonstrated the beneficial effects of ultrasound on the removal efficiency of FG in the detoxification experiments. The application of ultrasound can not only significantly decrease the NaOH consumption but also improve the detoxification effect compared with conventional detoxification method using only NaOH solution. Therefore, this study exhibits a new detoxification technique and is of practical significance.
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