COMPARATIVE QUANTITATIVE ANALYSIS OF SOME CLASSES OF BIOACTIVE COMPOUNDS IN SOME TEA SORTIMENTS AND TEALIKE INFUSIONS AVAILABLE ON THE ROMANIAN MARKET

ANNALS OF THE UNIVERSITY OF CRAIOVA, Biology, Horticulture, Food products processing technology, Environmental engineering Pub Date : 2022-12-16 DOI:10.52846/bihpt.v27i63.52

D. Popoviciu, Raluca Alexandra Mălureanu

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Abstract

Two white tea types, Pai Mu Tan and Fujian blend and three popular non-tea infusions, yerba mate, rooibos and hibiscus tea were studied for determining the concentrations of chlorophyll, carotenoid, total phenolic and polyphenolic compounds and essential oil contents in raw plant material and pH of the resulting infusions.White teas had the highest average amount of chlorophylls (746 mg/kg Fujian, 1,164 mg/kg Pai Mu Tan), the same being valid for carotenoids (218-226 mg/kg). Among non-tea beverages, rooibos had the highest amounts of both chlorophylls and carotenoids.Total phenolic compounds also had the highest concentrations in white teas (43,617 mg/kg Pai Mu Tan, 47,522 mg/kg Fujian) followed by yerba mate (29,146 mg/kg). Total essential oils were much more variable, even among white teas (1,200-10,800 mg/kg), with high amounts in yerba mate and hibiscus tea.pH values were similar, mildly acidic, except for the highly acidic (1.31) hibiscus tea.

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对罗马尼亚市场上可获得的茶类和茶类冲剂中某些类生物活性化合物进行比较定量分析

研究了两种白茶——白木茶和福建混合茶，以及三种流行的非茶泡茶——马茶、波士波斯茶和芙蓉茶，测定了原料中叶绿素、类胡萝卜素、总酚类和多酚类化合物的浓度和精油含量，并测定了泡茶的pH值。白茶中叶绿素平均含量最高(福建746 mg/kg，白木檀1164 mg/kg)，类胡萝卜素平均含量最高(218 ~ 226 mg/kg)。在非茶饮料中，路易波士红茶的叶绿素和类胡萝卜素含量最高。白茶中总酚类化合物的浓度最高(43,617 mg/kg白木茶，47,522 mg/kg福建茶)，其次是马茶(29,146 mg/kg)。总精油的变化要大得多，即使在白茶(1200 - 10800毫克/公斤)中，马黛茶和芙蓉茶的含量也很高。pH值相似，均为弱酸性，除了高酸性(1.31)的芙蓉茶。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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ANNALS OF THE UNIVERSITY OF CRAIOVA, Biology, Horticulture, Food products processing technology, Environmental engineering

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