PURPLE TEA


RESEARCH & STUDIES


 

Kenya Purple Tea Presentation @ World Tea Expo

Kenya Purple Tea Presentation @ World Tea Expo

At the 2017 World Tea Expo, Purple Tea saw its grand launch to the Tea Industry.  Intrigued tea lovers flocked to the Purple Tea Experience Booth to learn all about it.  Boaz from Tumoi Teas & Bhavin from Waterfall Teas led a educational class on The Purple Tea!  

See the full presentation used at the WTE to introduce the Kenyan Purple Tea…

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Purple Tea Anthocyanins

Characterization of anthocyanins in Kenyan teas: Extraction and identification

Characterization and quantification of anthocyanins in selected tea cultivars processed into black (aerated) and green (unaerated) tea products was carried out in this study. The anthocyanins were extracted from tea products processed from a number of newly bred purple leaf coloured Kenyan tea cultivars (Camellia sinensis) using acidified methanol/HCl (99:1 v/v). Extracted anthocyanins were purified by C18 solid phase extraction (SPE) catridges and characterised by HPLC-UV–Visible. They were identified according to their HPLC retention times, elution order and comparison with authentic standards that were available. Total monomeric anthocyanins were determined by the pH-differential method. Although the tea cultivars gave different yields of anthocyanins, the unaerated (green) teas had significantly (p 6 0.05) higher anthocyanin content than the aerated (black) teas…

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KPT Polyphenols

Total polyphenols, catechin profiles and antioxidant activity of tea products from purple leaf coloured tea cultivars

Black (aerated) and green (unaerated) tea products, processed from 10 green and 18 purple leaf coloured cultivars of Kenyan origin, and two tea products, from the Japanese cultivars, Yabukita and Yutakamidori, were assayed for total polyphenols (TP) content, individual catechin profiles and in vitro antioxidant capacity (AA). In addition, the phenolic content of the tea products was determined using the Folin– Ciocalteu phenol reagent. Catechin fractions were identified using reverse phase high performance liquid chromatography (HPLC) with a binary gradient elution system…

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