A processing technology for improving the quality of white tea is to pick one bud and one leaf of spring tea according to the requirements of traditional white tea processing raw materials, and the content of extract of fresh tea leaves steamed green and solid sample dried tea is more than 40%. After forming the quality characteristics of white tea through traditional white tea withering process, the withered leaves are steamed and stacked, and finally dried step by step. Steaming process can increase cell wall damage, soaking rate and extract content of white tea, which is beneficial to increase the thickness of tea soup. The combination of steaming and stacking process is conducive to the ripening of carbohydrates in tea and the conversion of carbohydrates into sugars. It can increase the soluble sugar content of white tea, enrich and coordinate other quality components of white tea, reduce the caffeine content, increase the sugar/coffee ratio of white tea, and finally form a sweet and mellow endoplasm with elegant appearance, gray green color and luster of traditional white tea. A new type of white tea with bright soup orange-yellow characteristics.
【技术实现步骤摘要】
一种提高白茶品质的加工工艺
本专利技术属于茶叶加工工艺领域,具体涉及一种提高白茶品质的加工工艺。
技术介绍
白茶是我国六大茶类之一,传统白茶具有外形素雅、毫心肥壮、叶波纹隆起、叶缘垂卷、色泽灰绿或翠绿、内质毫香显、汤色橙黄或杏黄、清澈明亮、叶底浅灰绿、叶脉微红、滋味鲜爽甜醇的特点。传统白茶的制作工艺为:鲜叶原料采摘→萎凋→干燥→成品。由于传统白茶在萎凋过程中,没有经过高湿热作用,碳水化合物转化物不丰富,苦涩物质没有部分除去,同时没有热涨作用和揉捻挤压作用,细胞壁破损率也不够,导致内含物不容易充分泡出,且长时间的呼吸作用消耗了过多的内含物质,使得成品白茶水浸出物含量低、甜味物质的可溶性糖含量不高、苦涩物质的咖啡碱相对含量高、糖咖比低,从而导致茶汤浓度降低且带有青味(豆浆味)或苦涩味、香气淡薄、滋味欠甜爽、略带苦涩味、醇厚度不够。查阅相关资料表明,现有对白茶的改进工艺技术一般都是集中在萎凋工艺中,通过控制调节萎凋的温度、湿度来达到茶叶内含物质的转化和合成,以提高白茶品质;或是通过前期做青、摇青、浪青、晒青等技术来提高白茶香气,在后续采用无压或轻压揉捻、整形等方式来提高 ...
【技术保护点】
1.一种提高白茶品质的加工工艺,其特征在于:该工艺步骤如下:(1)鲜叶采摘:按传统白茶加工工艺的要求采摘春茶一芽一叶,且茶鲜叶的蒸青固样干茶水浸出物含量≥40%;(2)萎凋:按传统白茶加工工艺的萎凋方法将茶鲜叶进行萎凋,使萎凋叶含水量为18‑22%;(3)汽蒸:将萎凋叶于100~110℃采用蒸汽加热熟化60~120s;在常温下快速脱除汽蒸叶表面水,然后将脱水后的汽蒸叶薄摊25‑35min;(4)堆放:将薄摊后的茶叶自然堆放于阴凉干燥处,堆高不超过30cm,表面覆盖一层棉布,堆放时间为8~16h;(5)干燥:将堆放叶先于45‑55℃干燥至含水量为9‑11%,摊凉1~2h,再于 ...
【技术特征摘要】
1.一种提高白茶品质的加工工艺,其特征在于:该工艺步骤如下:(1)鲜叶采摘:按传统白茶加工工艺的要求采摘春茶一芽一叶,且茶鲜叶的蒸青固样干茶水浸出物含量≥40%;(2)萎凋:按传统白茶加工工艺的萎凋方法将茶鲜叶进行萎凋,使萎凋叶含水量为18-22%;(3)汽蒸:将萎凋叶于100~110℃采用蒸汽加热熟化60~120s;在常温下快速脱除汽蒸叶表面水,然后将脱水后...
【专利技术属性】
技术研发人员:钟兴刚,黄怀生,粟本文,黎娜,
申请(专利权)人:湖南省茶叶研究所湖南省茶叶检测中心,
类型:发明
国别省市:湖南,43
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