3 results for “Catechins”

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Research ArticleOpen accessIn the keywordsA HPLC Method for Detection of 17 Characteristic Components in Tea ExtractYing Liu, Dan Wu, Ping Tang, Xingqian YeA HPLC method has been developed for the determination of tea for seven catechins ((+)-catechin, (−)-epicatechin, (−)-epigallocatechin, (−)-epigallocatechin gallate, (−)-epicatechin gallate, (−)-gallocatechins and (−)-gallocatechin gallate), two flavonols (quercetin, kaempferol), seven organic acids (Gallic acid, ferulic acid, protocatechuic acid, p-hydroxybenzoic acid，p-coumaric acid, erucic acid，vanillic acid) and caffeine. Using HPLC with gradient elution and photodiode array detection, seventeen compounds were separated and … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 1 · 2 Feb 2022 · 7,028 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffect of Water Bath Heating on Tannin Content and Quality Improvement Potential of Gambier (Uncaria gambir Roxb.)Daimon Syukri, Bastian Nova, Rina Yenrina et al.Gambir (Uncaria gambir Roxb.) is a source of natural phenolic compounds rich in catechins and tannins and has potential as a sustainable industrial raw material. During heating, phenolic compounds may undergo structural changes, including possible oxidation and polymerization, which can affect gambier quality beyond its catechin content. This study evaluated the effect of indirect heating duration using a water bath … …OnLine Journal of Biological Sciences, Vol. 26, Issue 4 · 23 Sep 2026 · 704 accessesView PDF Cite

Research ArticleOpen accessIn the abstractBlack Tea Extract on the Preservation of Cantonese SausageHuan Cheng, Ying Liu, Dan Wu et al.Black Tea Extract (BTE) is a natural pigment with strong antioxidant activity. Its effect on the preservation of Cantonese sausage was investigated based on polyphenol components analysis in this study. The content of tea polyphenols in BTE was 26.61% by using spectrophotometry, the tea catechin in BTE was analyzed by HPLC, which included gallic acid (0.27%), caffeine (5.75%) and 8 … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 3 · 3 Sep 2020 · 6,728 accessesView PDF Cite