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Open AccessArticle

Antioxidant Properties of Thai Traditional Herbal Teas

1
Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
2
Medicinal Plant Innovation Center, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
*
Author to whom correspondence should be addressed.
Beverages 2019, 5(3), 44; https://doi.org/10.3390/beverages5030044
Received: 25 April 2019 / Revised: 27 May 2019 / Accepted: 11 June 2019 / Published: 2 July 2019
(This article belongs to the Special Issue Antioxidant Activity Research and Bioactive Compounds in Beverages)
Recipes for Thai traditional herbal teas have been formulated based on Thai traditional medicine, which tries to achieve a balance of the body’s elements (fire, water, wind and earth) in each season. This study aims to assess the benefits of Thai traditional herbal teas through evaluating their antioxidant properties and measuring the satisfaction levels of healthy volunteers. Antioxidant activity tests performed on 11 tea recipes and on green tea (positive control) included 2,2-diphenyl-1-picrylhydrazyl (DPPH), a radical scavenging assay and a 2,2’-azino-bis-(3-ethylbenzothiazoline)-6-sulfonic acid (ABTS) assay. In addition, total phenolic contents were determined using a Folin-Ciocalteu assay. Tests of satisfaction were performed on volunteer subjects aged between 18 and 30 years old, using the criteria of color, flavor, taste and overall satisfaction. Among the 11 tea recipes tested, the summer recipe 1 containing Aegle marmelos (L.) Correa, Stevia rebaudiana (Bert.) Bertoni, Pandanus amaryllifolius Roxb. and Morus alba L. demonstrated the most promising antioxidant properties (p > 0.05) and a phenolic content (p > 0.05), which was comparable to green tea. Furthermore, it got the highest satisfaction scores in every assessed category. Therefore, this study shows that Thai traditional herbal teas, developed based on the concepts of Thai traditional medicine, could be a good choice for people looking for health-promoting beverages. View Full-Text
Keywords: antioxidant; herbal tea; blended tea; Thai traditional medicine; satisfaction test antioxidant; herbal tea; blended tea; Thai traditional medicine; satisfaction test
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MDPI and ACS Style

Tipduangta, P.; Julsrigival, J.; Chaithatwatthana, K.; Pongterdsak, N.; Tipduangta, P.; Chansakaow, S. Antioxidant Properties of Thai Traditional Herbal Teas. Beverages 2019, 5, 44.

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