文献类型：期刊文献

英文题名：Effect of alkaline and high-pressure homogenization on the extraction of phenolic acids from potato peels

作者：Zhu, Xindi[1,2];Cheng, Yanling[2,3];Chen, Paul[2];Peng, Peng[2];Liu, Shiyu[2];Li, Dong[1];Ruan, Roger[2]

第一作者：Zhu, Xindi

通讯作者：Li, D[1];Ruan, R[2]

机构：[1]China Agr Univ, Coll Engn, Beijing 10083, Peoples R China;[2]Univ Minnesota, Dept Bioprod & Biosyst Engn, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55108 USA;[3]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China

第一机构：China Agr Univ, Coll Engn, Beijing 10083, Peoples R China

通讯机构：[1]corresponding author), China Agr Univ, Coll Engn, POB 50,17 Qinghua Donglu, Beijing 100083, Peoples R China;[2]corresponding author), Univ Minnesota, 1390 Eckles Ave, St Paul, MN 55108 USA.

年份：2016

卷号：37

起止页码：91-97

外文期刊名：INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES

收录：;EI(收录号：20163402728332);Scopus(收录号：2-s2.0-84982189612);WOS:【SCI-EXPANDED(收录号:WOS:000388053800012)】；

基金：The authors thank Old Dutch Food Inc. (Roseville, MN, USA) for providing the potato peels residues. This research is supported in part by NIFA (2016-68003-24850), the Center for Biorefining at University of Minnesota, international S&T cooperation program of China (2015DFA30540)(2015DFA30540, 2014DFA61040, 2015DFA60170).

语种：英文

外文关键词：Potato peel; Phenolic acid; High-pressure homogenization; NaOH treatment

摘要：Phenolic acids were extracted from potato peels with NaOH treatment and a high-pressure homogenization (HPH) process. Total phenolic content, total flavonoid content, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity and extraction yield were determined with different treatment conditions. Significant improvement was observed after the alkaline and HPH treatments. HPLC analysis shows that the phenolic compounds contained gallic acid, sinapic acid, vanillic acid, syringic acid, protocatechuic acid, p-coumaric acid, chlorogenic acid, caffeic acid and ferulic acid. The yields of these specific phenolic acids varied with different treatments. Scanning electron microscope, nuclear magnetic resonance and particle size measurements suggest that changes in cellular structure may be the mechanisms for the improvement in extraction rendered by the HPH and NaOH treatments. In conclusion, the combined treatment of NaOH and HPH increased the extraction yield and functionality of the phenolic acids from the potato peel residues. Industry relevance: High-pressure homogenization as a process method has been applied widely in food industry. It can help with emulsification and sterilization significantly. But the potential of High-pressure homogenization as an assist method to improve the yield of extraction from food and food waste has not been developed. The positive effect of phenolic and flavonoids has been proved and found in potato peels. However, the release of these bioactive components is a difficulty with traditional method. The High-pressure homogenization can reduce the particle size apparently and release the bioactive compound. For potato peels, the production can be added into bread, meat, beverage, etc. to increase the fiber and nutrition. For other sorts of similar material, the high-pressure homogenization can be a novel to improve the extraction process of bioactive component bound in cell wall instead of inside the cell. In this article, we developed a new method with high-pressure homogenization and alkaline treatment to improve the extraction process dramatically. Meanwhile, the process can be scale up to industry with minor modification and adjustment. (C) 2016 Elsevier Ltd. All rights reserved.