原料压榨制油的预处理方式对核桃多肽功能特性和ACE抑制活性的影响  

Effect of raw material pretreatment method in oil pressing on functional characteristics and ACE inhibitory activity of walnut polypeptide

作　　者：高盼 韩玉博 杨永 马开创 钟武 胡传荣 何东平 张晖[3] 张跃进 王兴国 GAO Pan;HAN Yubo;YANG Yong;MA Kaichuang;ZHONG Wu;HU Chuanrong;HE Dongping;ZHANG Hui;ZHANG Yuejin;WANG Xingguo(Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education in China,Hubei Key Laboratory for Processing and Transformation of Agricultural Products,College of Food Science and Engineering,Wuhan Polytechnic University,Wuhan 430023,China;Key Laboratory of Edible Oil Quality and Safety for State Market Regulation,Wuhan Institute for Food and Cosmetic Control,Wuhan 430012,China;School of Food Science and Technology,Jiangnan University,Wuxi 214122,Jiangsu,China;Yunnan Moore Farm Biotechnology Development Co.,Ltd.,Chuxiong 675000,Yunnan,China)

机构地区：[1]武汉轻工大学食品科学与工程学院,湖北省农产品转化重点实验室,大宗粮油精深加工教育部重点实验室,武汉430023 [2]武汉食品化妆品检验所国家市场监管重点实验室(食用油质量与安全),武汉430012 [3]江南大学食品学院,江苏无锡214122 [4]云南摩尔农庄生物科技开发有限公司,云南楚雄675000

出　　处：《中国油脂》2023年第9期83-88,共6页China Oils and Fats

基　　金：国家自然科学基金资助项目(32001735);云南省重大科技专项计划——生物种业和农产品精深加工重大专项(202102AE090055)。

摘　　要：旨在研究原料压榨制油的预处理方式对核桃多肽性质的影响。对核桃仁分别进行未预处理、去衣、焙烤预处理后,进行压榨提油,以提油后的饼为原料,经正己烷脱脂,碱性蛋白酶酶解制备核桃多肽,测定核桃多肽的功能特性和ACE抑制活性。结果表明:与未预处理、焙烤预处理比较,去衣预处理的核桃多肽的持水性(50℃,5.11 g/g)、吸油性(50℃,3.25 g/g)、乳化性(pH 9.0,62.57%)、乳化稳定性(pH 9.0,84.51%)、起泡性(pH 9.0,117.49%)及ACE抑制率(63.04%)最高。综上,以去衣预处理压榨制油后的核桃饼为原料制备的核桃多肽具有良好的功能特性和ACE抑制活性。The aim was to study the effect of pretreatment methods of raw material pressing for oil on the properties of walnut polypeptide.The walnut kernels were untreated,peeled and roasted respectively,then pressed to extract oil.The cake after oil extraction was defatted by n-hexane and hydrolyzed by alkaline protease to produce walnut polypeptide,and the functional properties and ACE inhibitory activity of walnut polypeptide were determined.The results showed that compared with no treatment and roasting pretreatment,walnut polypeptide obtained by peeling of raw material had the highest water holding capacity(50℃,5.11 g/g),oil absorption(50℃,3.25 g/g),emulsifying ability(pH 9.0,62.57%),emulsifying stability(pH 9.0,84.51%),foaming ability(pH 9.0,117.49%)and ACE inhibitory rate(63.04%).In conclusion,the walnut polypeptide prepared from walnut cake after peeling and pressing for oil production had good functional properties and ACE inhibitory activity.

关 键 词：核桃 多肽 压榨 预处理方式 功能特性 ACE抑制活性 

分 类 号：TS253[轻工技术与工程—农产品加工及贮藏工程] TS222.1[轻工技术与工程—食品科学与工程]