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甜菜苷

甜菜苷

CAS号:7659-95-2
英文名:Betanin
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化合物简介
Betanin, or Beetroot Red, is a red glycosidic food dye obtained from beets; its aglycone, obtained by hydrolyzing away the glucose molecule, is betanidin. As a food additive, its E number is E162. Betanin degrades when subjected to light, heat, and oxygen; therefore, it is used in frozen products, products with short shelf life, or products sold in dry state. Betanin can survive pasteurization when in products with high sugar content. Its sensitivity to oxygen is highest in products with a high water content and/or containing metal cations (e.g. iron and copper); antioxidants like ascorbic acid and sequestrants can slow this process down, together with suitable packaging. In dry form betanin is stable in the presence of oxygen.
基本信息
编号系统
物化性质
安全信息
生产方法及用途
生产方法
1. 由食用红甜菜(Beta vulgaris var. rubra)的根茎(俗称紫菜头),用水萃取,萃取前宜先用2%亚硫酸氢钠液在95~98℃热烫10~15min以灭酶,提取液经浓缩得深红色浆料或红色粉末。制造过程中应除去天然存在的盐类、糖类及蛋白质。可添加食品级酸(如柠檬酸、乳酸、L-抗坏血酸)作为pH调节剂和稳定剂及载体(如麦芽糊精)和粉状成品的填充剂等。
2. 鲜甜菜在80℃的水中加热10min,切成3~5mm丝状后在室温下的水中浸泡40min,袋滤并压榨后滤渣再浸提一次,第二次滤液作第一次浸提用。滤液减压浓缩至1/3体积(含干物质40%左右),再喷雾(或真空)干燥得粉末产品,收率为60,含甜菜苷0.45%~0.8%。
用途
作食品着色剂,我国规定可用于各类食品,按生产需要适量使用。可用于多种食品的着色,也用于药片糖衣和化妆品着色。