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Effect of ultrasonic pretreatment on eliminating cyanogenic glycosides and hydrogen cyanide in cassava

文献类型： 外文期刊

作者： Zhong, Yongheng 1 ; Xu, Tao 1 ; Ji, Shengyang 1 ; Wu, Xiaodan 4 ; Zha, Tian 1 ; Li, Shimin 4 ; Zhang, Peng 5 ; Li, Kaimia 1 ;

作者机构： 1.Zhejiang Univ, Coll Biosyst Engn & Food Sci,Key Lab Agroprod Pos, Natl Local Joint Engn Lab Intelligent Food Techno, Key Lab Agroprod Nutr Evaluat,Minist Agr & Rural, Hangzhou 310058, Peoples R China

2.Zhejiang Univ, Fuli Inst Food Sci, Hangzhou 310058, Peoples R China

3.Zhejiang Univ, Ningbo Res Inst, Ningbo 315100, Peoples R China

4.Zhejiang Univ, Anal Ctr Agrobiol & Environm Sci, Hangzhou 310058, Peoples R China

5.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, Natl Key Lab Plant Mol Genet, Shanghai 200032, Peoples R China

6.Chinese Acad Trop Agr Sci, Trop Crop Germplasm Res Inst, Danzhou 571737, Peoples R China

关键词： Cassava; Cyanogenic glycosides; Hydrogen cyanide; Ultrasound; Enzymatic hydrolysis

期刊名称：ULTRASONICS SONOCHEMISTRY （ 影响因子：7.491； 五年影响因子：7.537 ）

ISSN： 1350-4177

年卷期： 2021 年 78 卷

页码：

收录情况： SCI

摘要： Traditional soaking method takes days to remove cassava cyanide. Ten minutes of ultrasonic pretreatment (UPT) was found to be a new effective method to eliminate both cyanogenic glycosides and hydrogen cyanide in cassava. Here, the parameters of UPT were optimized and the underlying mechanisms were investigated. 40.36% and 24.95% of hydrogen cyanide and cyanogenic glycosides in cassava juice were eliminated under 10 min of UPT (45celcius, 81 W). UPT before boiling enhanced the total cyanide elimination to 41.94%. The degradation patterns of hydrogen cyanide and cyanogenic glycosides were different. Ultrasound directly eliminated hydrogen cyanide and indirectly degraded cyanogenic glycosides through promoting enzymatic hydrolysis. The beta-gluco-sidase activity was increased by 17.99% induced by ultrasound. This was supported by the movement of hydrophobic residual and the rearrangement of the secondary structure of the molecular as found in fluorescence, CD, FTIR, DSC and TG analysis. This study revealed that UPT acted as a fast and simple technical way in improving cassava safety.

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