title: A new norisoprenoid and other compounds from Fuzhuan brick tea.
abstract: Fuzhuan brick tea, a kind of dark tea consumed mainly in the border regions of Southwestern and Northwestern China since the 1860s, is produced from the leaves of Camellia sinensis var. sinensis by microbial fermentation. From this special fermented tea, a new norisoprenoid, 3R,9R-oxido-5-megastigmene, was isolated, together with α-linolenic acid, strictin, isovitexin, astragalin, (+)-catechin, (-)-epicatechin, (-)-epicatechin gallate, (+)-gallocatechin, (-)-epigallocatechin, (-)-epigallocatechin gallate and gallic acid. The structures of the compounds were identified by spectroscopic means. The new compound didn't show any inhibition activity against the tested enteric pathogenic microorganisms at a concentration of 800 μg/mL by the hole plate diffusion method.
authors.affiliation: Key Laboratory of Tea Biochemical and Biotechnology of Ministry of Education and Ministry of Agriculture, Anhui Agricultural University, Hefei 230036, China. zhangyj@mail.kib.ac.cn
authors.forename: Zhen-Mei
authors.initials: ZM
authors.lastname: Luo
authors.forename: Tie-Jun
authors.initials: TJ
authors.lastname: Ling
authors.forename: Li-Xiang
authors.initials: LX
authors.lastname: Li
authors.forename: Zheng-Zhu
authors.initials: ZZ
authors.lastname: Zhang
authors.forename: Hong-Tao
authors.initials: HT
authors.lastname: Zhu
authors.forename: Ying-Jun
authors.initials: YJ
authors.lastname: Zhang
authors.forename: Xiao-Chun
authors.initials: XC
authors.lastname: Wan
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology; D047310:Apigenin / Q000032:analysis / Q000494:pharmacology; D028241:Camellia sinensis / Q000737:chemistry*; D002392:Catechin / Q000031:analogs & derivatives / Q000032:analysis / Q000494:pharmacology; D054308:Enteropathogenic Escherichia coli / Q000187:drug effects; D005707:Gallic Acid / Q000032:analysis / Q000494:pharmacology; D015394:Molecular Structure; D045792:Norisoprenoids / Q000032:analysis / Q000494:pharmacology; D017962:alpha-Linolenic Acid / Q000032:analysis / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D045792:Norisoprenoids; D017962:alpha-Linolenic Acid; D005707:Gallic Acid; D047310:Apigenin; D002392:Catechin; C062669:epicatechin gallate; C045651:epigallocatechin gallate; C057580:gallocatechol; C049772:isovitexin