台湾市售GABA茶品质调查

Standards Pub Date : 2023-08-28 DOI:10.3390/standards3030022
Mu-Chen Wu, Shih-Lun Liu, B. Liou, Chun-Yeh Chen, Yuh‐Shuen Chen
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摘要

本研究收集了2016年至2021年台湾产γ-氨基丁酸(GABA)茶的220个市售样品。220种GABA茶叶样品被分为5种,包括108种GABA乌龙茶、71种GABA红茶、21种GABA包冲茶、12种GABA绿茶和8种GABA普洱茶。在台湾最常见的GABA茶是GABA乌龙茶,其次是GABA红茶。分析了GABA茶样品的理化成分和消费者接受度。GABA含量在不同类型的GABA茶中存在差异:GABA乌龙茶含量在128 ~ 286 mg/100 g之间,GABA红茶含量在182 ~ 360 mg/100 g之间,GABA包冲茶含量在98 ~ 203 mg/100 g之间,GABA绿茶含量在56 ~ 174 mg/100 g之间,GABA普洱茶含量在142 ~ 191 mg/100 g之间。在GABA茶的商业标准方面,220个GABA茶样品中有22个不符合商业标准,不合格率为10%。在GABA茶发酵过程中,GABA含量显著增加,但总多酚和总儿茶素含量保持稳定。在消费者接受度方面,GABA红茶是消费者接受度最高的,其次是GABA普洱茶、GABA包冲、GABA乌龙茶。GABA茶中的酸味与红茶中发现的原始酸味感觉特性相似。据推测,这是GABA红茶具有最高接受度的主要原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation on the Quality of Commercially Available GABA Tea in Taiwan
This study collected 220 commercially available samples of γ-Aminobutyric acid (GABA) tea produced in Taiwan from 2016 to 2021. The 220 tea samples were categorized into five types of GABA tea, including 108 GABA Oolong tea, 71 GABA Black tea, 21 GABA Paochong tea, 12 GABA Green tea, and 8 GABA Puerh tea samples. The most common type of GABA tea in Taiwan is GABA Oolong tea, followed by GABA Black tea. The physico-chemical constituents and consumer acceptance of the GABA tea samples were analyzed. The GABA content varied among the different types of GABA tea: GABA Oolong tea ranged from 128–286 mg/100 g, GABA Black tea ranged from 182–360 mg/100 g, GABA Paochong tea ranged from 98–203 mg/100 g, GABA Green tea ranged from 56–174 mg/100 g, and GABA Puerh tea ranged from 142–191 mg/100 g. In terms of the commercial standard of GABA tea, 22 out of the 220 GABA tea samples failed to meet the commercial standard, with a failure rate of 10%. During the fermentation process of GABA tea, the contents of GABA increased significantly, but the total polyphenol and total catechin contents remained stable. In terms of consumer acceptance, GABA Black tea is the most accepted by consumers, followed by GABA Puerh tea, GABA Paochong, and GABA Oolong tea. The sour flavor in GABA tea is similar to the original sour sensory properties found in black tea. It is assumed that this is the main reason GABA Black tea has the highest acceptance.
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