Green extraction of phenolic compounds from Perle Hallertau and Nuggets hop pellets  

作　　者：Vanesa Sanz Maria Dolores Torres Jose M.Lopez Vilarino Herminia Dominguez 

机构地区：[1]Chemical Engineering Department,Faculty of Science,Campus Ourense,University of Vigo,Spain [2]R&D Department,Hijos de Rivera,S.A.U.c/ José Maria Rivera,nº6,A Coruña,Spain

出　　处：《Food Bioscience》2022年第6期474-481,共8页食品生物科学（英文）

基　　金：Spanish Ministry of Science,Innovation and Universities for her postdoctoral grant(RYC 2018-024454-I).

摘　　要：Operation conditions to recover and quantify active compounds from Perle Hallertau (PH) and Nuggets (N) hops, following a sequential combination of ultrasound and microwave assisted ethanolic extraction were studied. Ultrasound treatment (55℃, 60% ethanol, 30 minutes) allowed extracts with phenolic contents of 160.43 mg GAE/g extract and ABTS radical scavenging capacity equivalent to 400.24 mg Trolox/g extract for PH. Optimal conditions for N were found at 55℃, using 60% ethanol for 120 minutes (98.80 mg GAE/g extract) and 55℃, 40% ethanol for 180 min (370.00 mg Trolox/g extract). The remaining solids were further processed under ethanolic microwave extraction (130–190℃, 5 minutes) with the optimal results obtained at 190℃ for PH (77.11 and 98.67 mg GAE/g extract) and N (226.96 and 368.72 mg Trolox/g extract). Results obtained provided hops pellets as a rich source of active compounds that could be suitable for food and no food industry applications.

关 键 词：Humulus lupulus Cascade extraction Environmentally friendly technologies Ultrasound Microwave ANTIOXIDANTS 

分 类 号：TS262.5[轻工技术与工程—发酵工程]