摘要
以鱿鱼眼中提取的透明质酸及其降解产物为研究对象,测定不同相对分子质量(Mr)透明质酸的保湿作用以及对Fe3+的还原能力、1,1-二苯基-2-三硝基苯肼(DPPH)自由基和羟自由基(.OH)的清除能力。结果表明:透明质酸及其降解产物的保湿性均优于甘油,随着Mr的增加,保湿能力逐渐增强,其中HA-2组分保湿率达到92.66%;不同Mr的透明质酸均有一定的抗氧化作用,其抗氧化活性随着Mr的降低而增大,Mr为6000以下的透明质酸表现出较强的清除自由基能力,而未降解的透明质酸组分HA-1和HA-2的抗氧化能力较弱。
Two hyaluronic acid fractions with different relative molecular mass isolated from squid eyes,named as HA-1 and HA-2,respectively and the degradation products of HA-2 separated by ultrafiltration were determined for their moisture retention capacity and antioxidant properties such as ferric ion reducing power and scavenging activity against DPPH and hydroxyl radicals.The results showed that the moisture retention capacity of hyaluronic acid and its degradation products was superior to that of glycerol and increased with increasing relative molecular mass.Fraction HA-2 exhibited the highest water retention rate,92.66%.All the HA samples investigated possessed antioxidant activity,which increased with decreasing relative molecular mass.Stronger free radical scavenging activity was observed for hyaluronic acid with relative molecular mass below 6000,while HA-1 and HA-2 had weaker antioxidant activity.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2012年第1期35-38,共4页
Food Science
基金
农业部"948"项目(2006G-41)
浙江省新苗人才计划项目(2008R40G2070044)
宁波大学SRIP重大课题(2009)
关键词
透明质酸
相对分子质量
保湿
自由基
抗氧化作用
hyaluronic acid
relative molecular mass
moisture retention
radical
antioxidant activity
