栀子黄色素溶液稳定性的影响因素研究
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篇名: 栀子黄色素溶液稳定性的影响因素研究
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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 ℃)、pH(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pH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。
ABSTRACT: 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 ℃), pH (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 pH conditions; 4%, 12%, 15% and 18% under 4 oxidant concentrations. After adding 3 antioxidants, 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.
期刊: 2016年第27卷第10期
作者: 张伦,林华庆,余楚钦,陶慧,黄劲恒,陈晓霞
AUTHORS: ZHANG Lun,LIN Huaqing,YU Chuqin,TAO Hui,HUANG Jinheng,CHEN Xiaoxia
关键字: 栀子黄色素;光照;温度;天然抗氧化剂;茶多酚;迷迭香酸;葡萄籽提取物;色素损失率;稳定性
KEYWORDS: Gardenia yellow; Light; Temperature; Natural antioxidant; Tea polyphenol; Rosemary acid; Grape seed extract; Pigment loss rate; Stability
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