The present invention relates to an instant green tea rich in water-soluble chlorophyll and its preparation method. After picking fresh green tea buds, the green tea is destroyed and passivated simultaneously by steam explosion or other methods, which can effectively protect the structure of chlorophyll. The structure of chlorophyll is effectively protected by vacuum low-temperature weak alkaline ion water extraction, followed by vacuum low-temperature concentration and vacuum freezing. Drying, vacuum and low temperature conditions ensure that chlorophyll and other active substances are not oxidized and degraded in the extraction process of green tea. On the basis of ensuring that the active ingredients of green tea powder are close to fresh tea, green tea powder with bright green color can be obtained. Finally, green tea powder rich in water-soluble chlorophyll can be obtained. After dissolving in water, the characteristic absorption peak of chlorophyll can be detected by full-wavelength ultraviolet scanning. This is the first time that instant green tea powder containing water-soluble chlorophyll has been obtained.
【技术实现步骤摘要】
一种富含水溶性叶绿素的速溶绿茶及其制备方法
本专利技术属于绿茶领域,涉及叶绿素的提取技术,尤其是一种富含水溶性叶绿素的速溶绿茶及其制备方法。
技术介绍
叶绿素有造血、提供维生素、解毒、抗病等多种用途,对人体十分有益,绿茶中富含丰富的叶绿素。中国是世界上发现和利用茶树最早的国家,也是世界上最早生产绿茶的国家。目前市面上比较常见的绿茶产品有三类,一是干茶叶,二是散装茶叶包,三是绿茶味瓶装饮料。干茶叶的不足是,首先沏茶的时间比较久,泡茶需要专门的器皿来承装,这对于上班工作或时间比较紧张的人群来说,比较浪费时间和精力,不能满足快节奏的现代人生活;第二点,整片茶叶沏泡方式,使得茶叶中的叶绿素等营养物质不能完全溶出,因此人体不能完全获得茶叶中的营养。泡散装茶叶与直接泡干茶叶的缺点相同,二者还存在着沏茶后,要将沏过的茶叶和茶叶包扔掉的麻烦。绿茶味瓶装饮料虽然主打绿茶,但本质是一种饮料,含有大量的矿物质、添加剂、色素、防腐剂等,这些物质进入人体造成对肾脏的伤害。目前市面上也存在速溶绿茶,但绿茶粉中的叶绿素含量很低,呈现出黄褐色,水溶性也较差。市面上还有通过直接破碎茶叶后得到的绿茶 ...
【技术保护点】
1.一种富含水溶性叶绿素的速溶绿茶的制备方法,其特征在于:步骤如下:(1)采摘新鲜绿茶嫩芽,通过蒸汽爆破破壁的同时杀青;(2)采用纯净水电解法制备弱碱性离子水;(3)真空低温弱碱性离子水浸提;(4)真空低温浓缩;(5)真空冷冻干燥。
【技术特征摘要】
1.一种富含水溶性叶绿素的速溶绿茶的制备方法,其特征在于:步骤如下:(1)采摘新鲜绿茶嫩芽,通过蒸汽爆破破壁的同时杀青;(2)采用纯净水电解法制备弱碱性离子水;(3)真空低温弱碱性离子水浸提;(4)真空低温浓缩;(5)真空冷冻干燥。2.根据权利要求1所述的富含水溶性叶绿素的速溶绿茶的制备方法,其特征在于:步骤(1)所述的蒸汽爆破是在0.5~2.5MPa条件下处理1~40min,然后在0.05~0.5s内完成瞬间泄压。3.根据权利要求1所述的富含水溶性叶绿素的速溶绿茶的制备方法,其特征在于:步骤(2)所述的弱碱性离子水的pH值为8±0.5。4.根据权利要求1所述的富含水溶性叶绿素...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。