摘要
目的:考察影响栀子黄色素溶液稳定性的因素。方法:以色素损失率为指标,分别考察栀子黄色素溶液在不同光照(强光、自然光、避光)、温度(4、25、60、80℃)、p H(3.0、5.0、7.0、9.0、11.0)、氧化剂浓度(过氧化氢溶液,0、0.1%、0.2%、0.3%)条件下的稳定性(放置12 h内),3种天然抗氧化剂茶多酚、迷迭香酸、葡萄籽提取物在不同光照(强光、自然光、避光)和温度(25、60、80℃)条件下以及不同浓度(0、0.05%、0.1%、0.2%)茶多酚对栀子黄溶液稳定性(放置12 h内)的影响。结果:12 h时色素损失率在3种光照条件下分别约为20%、10%、10%,4种温度下分别约为5%、5%、30%、60%,5种p H下分别约为12%、6%、6%、6%、16%,4种浓度氧化剂下分别约为4%、12%、15%、18%。除80℃条件外,3种抗氧化剂的加入使不同光照及温度条件下的色素损失率均约降低10%,并以茶多酚降低效果最强;4种浓度的茶多酚中以0.1%组的色素损失率最低。结论:栀子黄色素溶液在强光、高温下均不稳定;3种抗氧化剂均可提高其稳定性,尤以0.1%的茶多酚作用最强。
OBJECTIVE：To investigate the influential factors for the stability of gardenia yellow solution. METHODS：Using pigment loss rate as index,the stability of gardenia yellow solution was investigated within 12 h under different light（strong light,natural light,dark place）,temperature（4,25,60,80 ℃）,p H（3.0,5.0,7.0,9.0,11.0）,oxidant concentration（hydrogen peroxide solution,0,0.1%,0.2%,0.3%）conditions. The effects of 3 natural antioxidants as tea polyphenol,rosmarinic acid and grape seed extract on the stability of gardenia yellow solution were investigated within 12 h under different light（strong light,natural light,dark place） and temperature（25,60,80 ℃） conditions;the effects of different concentrations of tea polyphenol（0,0.05%,0.1%,0.2%）on the stability of gardenia yellow solution were also investigated within 12 h. RESULTS：The pigment loss rates were 20%,10% and 10% within 12 h under 3 light conditions;5%,5%,30% and 60% under 4 temperature conditions;12%,6%,6%,6% and 16% under 5 p H conditions;4%,12%,15% and 18% under 4 oxidant concentrations. After adding 3antioxidants,pigment loss rate decreased by 10% under different light and temperature conditions except for 80 ℃,and the decrease of tea polyphenol was most significant;among 4 concentrations of tea polyphenol,pigment loss rate was the lowest in 0.1%group. CONCLUSIONS：Gardenia yellow solution can＇t keep stable under strong light and high temperature;3 antioxidants can improve the stability of gardenia yellow solution,especially 0.1% tea polyphenol.
出处
《中国药房》
CAS
北大核心
2016年第10期1370-1373,共4页
China Pharmacy
