摘要
花色苷作为一种天然色素及抗氧化剂,广泛应用于食品、制药以及化妆品行业。据相关部门统计,2007年我国酿酒葡萄年产量超过200万t,其中大约70%用做酿造红葡萄酒,而酿酒葡萄的出渣率约在10%左右,其中33%为葡萄皮渣,即每年大约有4.6万t的葡萄皮渣被丢弃。本文探索了利用超声波细胞破碎机对酿酒葡萄皮渣中花色苷辅助提取的工艺影响,考查了影响提取率的主要因素,通过正交实验优化了提取工艺。采用分光光度法对花色苷产品进行分析。试验结果表明,最优的工艺条件为:乙醇浓度50%,温度40℃,超声时间20min,超声功率260W。在此条件下,所得最终产品的花色苷的提取率可达90.69%,未经纯化的色素浓缩液的色价为6.78。
As a kind of purely-natural pigment and antioxidant,anthocyanins have been extensively used in many fields,such as food,pharmacy and cosmetic.According to the relevant sector statistics,there are much more than 2 million ton vine grape in our country in 2007,of which about70%were made for red wine,and about 10% wine pomace were output,of which about 33% were grape skin residue.That is to say,about 46,000 ton of the grape skin residue were deserted.In this paper the technics of ultrasound-associated extraction of anthocyanins from grape wine pomace were studied,the main factors affecting the rate of extraction were examined and the optimal condition of the main factors were obtained by orthogonal method.The difference of extracted anthocyanins fractions was analyzed by spectrophotometry.Results demonstrate that the optimal conditions were concentration of ethanol 50%,extraction temperature 40℃,extraction time 20min,extraction power 260W.Under this condition the extraction yield of anthocyanins was 90.69%and the color value of the condensate,which had not been purified,was 6.78.
出处
《中国食品添加剂》
CAS
北大核心
2010年第3期143-146,共4页
China Food Additives
关键词
超声波
葡萄皮渣
花色苷
提取率
ultrasound-associated
grape wine pomace
anthocyanins
