Green Tea Contains Vitamin C, Black Tea Does Not, Research By RateTea Concludes

Jan. 6, 2012 - PRLog -- The vitamin C content of green tea is one of the most frequently made health claims made by tea companies and supplement businesses with an interest in promoting the sales of green tea.  However, an overwhelming majority of internet sources discussing the vitamin C content of green tea do not cite any sources.  The topic of the vitamin C content of other types of tea, including black tea, white tea, and oolong, is one with even sparser coverage.

Up until now, there was no central page or resource on the internet where one could find accurate information on the topic of the vitamin C content of various teas.  What little information on this topic was available in reputable sources was buried in scholarly journals and scientific books.

RateTea publishes a new resource on the vitamin C content of tea:

In response to the lack of adequately-sourced articles summarizing in everyday language what is known about the vitamin C content of different types of tea, RateTea has conducted its own original research by scouring the scientific literature analyzing the nutrient composition of brewed tea and loose-leaf tea, and has published a new resource on the topic of tea and vitamin C.  The core findings of the research were as follows:

Green tea was found to contain small amounts of vitamin C, ranging from about 2% to 11% of the US recommended daily allowance (RDA).  Among green tea varieties, gyokuro was found to have the highest vitamin C content.

Black tea was found to contain no vitamin C.

White tea has not been adequately studied in order to conclude anything with certainty about its vitamin C content; however, what is known about the biology and chemistry of vitamin C in other foods, and how it changes with processing, would suggest that white tea would initially have a greater vitamin C content than green tea, but that the vitamin would break down more quickly over time in white tea.

Read the full article:

The published resource on RateTea goes into considerable more depth, exhaustively exploring what is known about the topic of the vitamin C content of tea:

http://ratetea.com/topic/vitamin-c-content-of-tea/62/

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RateTea is the web's authoritative resource on tea, and community where anyone can rate and review loose-leaf tea, teabags, and herbal teas, with a searchable database of teas classified by brand, style, and region, and articles about tea, health, sustainability, and related topics.