葛根汁制备与葛根饮料抗氧化特性研究  

Preparation and Antioxidant Properties of Pueraria Lobata Juice and Pueraria Beverage

作　　者：乔登烁 陈越 段旭昌[1] 陈良超[1] QIAO Dengshuo;CHEN Yue;DUAN Xuchang;CHEN Liangchao(College of Horticulture,College of Food Science&Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China)

机构地区：[1]西北农林科技大学食品科学与工程学院园艺学院,陕西杨陵712100

出　　处：《农产品加工（下）》2018年第4期1-6,共6页Farm Products Processing

基　　金：国家林业局林业科学技术研究项目(2016-04)

摘　　要：为研发优质葛根汁及葛根饮料产品,以葛根为试材,通过对比试验和感官评价,确定葛根汁及葛根汁饮料生产工艺过程和产品配方,通过抗氧化试验,评价葛根汁及葛根饮料对羟基自由基、超氧阴离子自由基、DPPH自由基的清除能力及总还原能力。结果表明,鲜葛根经清洗、破碎和打浆,于90℃,30 min条件下糊化,用α-淀粉酶在90℃条件下液化2 h,再用β-淀粉酶于60℃条件下糖化2 h,经过滤压榨后获得的葛根汁品质最好,葛根汁中黄酮含量为0.45 mg/m L。对比试验优选的葛根饮料黄酮含量为0.20 mg/m L;葛根原汁与葛根饮料对DPPH自由基清除能力接近,对比羟基自由基和超氧阴离子自由基的清除能力,葛根汁远高于葛根饮料。For the development of the use of puerarin value,a high quality puerarin juice and puerarin beverage preparation process were developed.In this paper,puerarin was chose as a test material,then using a series of preparation process to prepare the puerarin beverage,and the sensory evaluation was used to select the most consistent with the public taste of the formula.The effects of the scavenging effect of the flavonoids and the scavenging of the hydroxyl radicals on the scavenging of the superoxide free radicals,the scavenging effect of DPPH and the reduction test were carried out to obtain the antioxidant level of the puerarin beverage and the antioxidant activity contrast.The results show that the preparation technics of pueraria lobate juice was:clean→cut→pulp→gelatinization 90℃,30 min→liquidation 90℃,2 h→saccharify 60℃,2 h→filtration→suction filtration→bottling→cold storage;the content of flavonoids in pueraria lobata juice was 0.45 mg/mL,and the flavonoid content was 0.20 mg/mL;after comparing the antioxidant of puerarin with puerarin juice,we draw the conclusion that the DPPH free radical scavenging ability of these two samples were similar;as for hydroxyl radicals and superoxide anion free radicals ability,pueraria lobate juice was significantly higher than the puerarin beverage.

关 键 词：葛根 葛根汁 葛根饮料 黄酮 体外抗氧化 

分 类 号：TS275.2[轻工技术与工程—农产品加工及贮藏工程]