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Biochemical degradation and physical migration of polyphenolic compounds in osmotic dehydrated blueberries with pulsed electric field and thermal pretreatments

文献类型： 外文期刊

作者： Yu, Yuanshan 1 ; Jin, Tony Z. 2 ; Fan, Xuetong 2 ; Wu, Jijun 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Minist Agr,Key Lab Funct Foods, 133 Yihenglu, Guangzhou 510610, Guangdong, Peoples R China

2.ARS, Eastern Reg Res Ctr, USDA, 600 East Mermaid Lane, Wyndmoor, PA 19038 USA

关键词： Blueberry;Pulsed electric fields;Thermal;Pretreatment;Osmotic dehydration;Nutritive compounds

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2018 年 239 卷

页码：

收录情况： SCI

摘要： Fresh blueberries were pretreated by pulsed electric fields (PEF) or thermal pretreatment and then were subject to osmotic dehydration. The changes in contents of anthocyanins, predominantly phenolic acids and flavonols, total phenolics, polyphenol oxidase (PPO) activity and antioxidant activity in the blueberry samples during pretreatment and osmotic dehydration were investigated. Biochemical degradation and physical migration of these nutritive compounds from fruits to osmotic solutions were observed during the pretreatments and osmotic dehydration. PEF pretreated samples had the least degradation loss but the most migration loss of these compounds compared to thermally pretreated and control samples. Higher rates of water loss and solid gain during osmotic dehydration were also obtained by PEF pretreatment, reducing the dehydration time from 130 to 48 h. PEF pretreated and dehydrated fruits showed superior appearance to thermally pretreated and control samples. Therefore, PEF pretreatment is a preferred technology that balances nutritive quality, appearance, and dehydration rate. Published by Elsevier Ltd.

  • 相关文献

[1]Osmotic dehydration of blueberries pretreated with pulsed electric fields: Effects on dehydration kinetics, and microbiological and nutritional qualities. Yu, Yuanshan,Xu, Yujuan,Jin, Tony Z.,Fan, Xuetong. 2017

[2]Effects of pulsed electric field processing on microbial survival, quality change and nutritional characteristics of blueberries. Jin, Tony Z.,Gurtler, Joshua B.,Yu, Yuanshan.

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