复合花青素饮料的制备及提高其稳定性的方法
Preparation of compounded anthocyanins beverage and the improvement of its stability
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摘要: 本实验将以葡萄皮、黑米、紫甘薯提取物为原料的复合花青素应用于果味饮料中,通过选择最适辅色剂种类并确定添加量,提高了花青素在酸性饮料体系中的保存率。通过正交实验确定饮料的最佳配方为:柠檬酸0.16%,果葡糖浆10%,蓝莓香精0.06%,复合花青素0.1%;结合杀菌条件选择茶多酚作为最适辅色剂,添加量为500 mg/kg时效果最佳,饮料颜色在杀菌条件下的保存率可达90.9%。实验中的饮料产品在低温下贮存时间更长,其中在4℃时饮料中花色苷的贮存期为230 d左右。Abstract: This study was designed to use the compounded anthocyanins of grape skin,black rice and purple sweet potato extract applied in the fruit- flavored beverage.Through adding appropriate copigment to improve its preservation rate in acidic beverage system. The results showed that the optimum blueberry fruit drinks' formula was: 0.16% Citric acid,10% fructose syrup,0.06% blueberry flavor,0.1% compounded anthocyanins.Combine with sterilization conditions,Tea Polyphenols was choosed as the most suitable copigment,and the best addition amount was 500 mg / kg.Under sterilization condition,it's retention rate can reach 90.9%.The beverage were stored for longer time at low temperature in this study and the storage period of anthocyanins was 230 d at 4 ℃.