The effect of different ultra high pressure-assisted extraction on the yield, the contents of main chemical components and the sensory quality of fresh green tea infusion was investigated. With increasing of the pressure, the contents of total solids, polyphenols, free amino acids and main catechins components increased, and no significant influence on the colour and aroma quality of fresh green tea infusion observed. There was no significant difference in the contents of main chemical components and the sensory quality when the pressure was between 100 MPa and 300 MPa. However, the sensory quality of the fresh green tea infusion decreased markedly when the pressure reached 500 MPa. After comprehensive comparison, ultra high pressure treatment (100 MPa, 10 min) was the optimum parameter. The cell structure of the tea leaves was damaged after ultra high pressure treated, and the damage degree emphasized with the increasing of the pressure. It may be the reason of why the ultra high pressure-assisted extraction can increase the yield and the content of main chemical components of fresh green tea infusion.
XU Yong-quan
,
YUAN Hai-bo
,
WANG Fang
,
ZHANG Rui-lian
,
CHEN Jian-xin
,
YIN Jun-feng
. Ultra High Pressure-assisted Extraction of Fresh Green Tea Infusion[J]. Journal of Tea Science, 2010
, 30(2)
: 95
-100
.
DOI: 10.13305/j.cnki.jts.2010.02.004
[1] 朱永兴, Huang H.茶与健康[M]. 北京: 中国农业科学技术出版社, 2004.
[2] 宛晓春. 茶叶生物化学[M]. 北京: 中国农业科学技术出版社, 2003.
[3] 陈复生. 食品超高压加工技术[M]. 北京: 化学工业出版社, 2005.
[4] 张文佳, 张燕, 廖小军, 等. 超高压对果蔬汁品质影响研究进展[J]. 食品与发酵工业, 2008, 34(9): 113-117.
[5] 梁淑如, 赵建国, 吉惠明, 等. 超高压技术在食品工业中的最新研究进展[J]. 食品研究与开发, 2006, 27(8): 1-4.
[6] 谭俊峰. 超高压对茶叶主要品质成分含量的影响[D]. 北京: 中国农业科学院, 2008.
[7] 张格, 张玲玲, 吴华, 等. 采用超高压技术从茶叶中提取茶多酚[J]. 茶叶科学, 2006, 26(4): 291-294.
[8] 钟萝. 茶叶品质理化分析[M]. 上海: 上海科学技术出版社, 1989.
[9] 谭俊峰, 林智, 郭丽, 等. 超高压对茶鲜叶的细胞结构、多酚氧化酶活性及主要化学成分的影响[J]. 食品科学, 2007, 28(9): 78-82.
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