Author

Ying Liu

Hangzhou Vocational and Technical College, China

3 articles in our journals

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Research ArticleOpen accessA 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 · 7,034 accessesView PDF Cite

Review ArticleOpen accessA Review of Detection Techniques for Chemical Oxygen Demand in WastewaterDan Wu, Yinglu Hu, Ying LiuWater pollution is a major problem all over the world, the detection techniques of water play an important role in the evaluation of water pollution. Chemical Oxygen Demand (COD) is an important index of the evaluation of water pollution. The paper reviews the detection methods of chemical oxygen demand in wastewater, introduces the standard of chemical oxygen demand emission limit … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 1 · 27 Jan 2022 · 8,923 accessesView PDF Cite

Research ArticleOpen accessBlack 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 · 6,731 accessesView PDF Cite