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:
# # #
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.