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Antioxidant phenolic compounds from Pu-erh tea.
Molecules. 2012 Nov 27; 17(12):14037-45.M

Abstract

Eight compounds were isolated from the water extract of Pu-erh tea and their structures were elucidated by NMR and MS as gallic acid (1), (+)-catechin (2), (−)-epicatechin (3), (−)-epicatechin-3-O-gallate (4), (−)-epigallocatechin-3-O-gallate (5), (−)-epiafzelechin- 3-O-gallate (6), kaempferol (7), and quercetin (8). Their in vitro antioxidant activities were assessed by the DPPH and ABTS scavenging methods with microplate assays. The relative order of DPPH scavenging capacity for these compounds was compound 8 > compound 7 > compound 1 > compound 6 > compound 4 ≈ compound 5 > compound 2 > VC (reference) > compound 3, and that of ABTS scavenging capacity was compound 1 > compound 2 > compound 7 ≈ compound 8 > compound 6 > compound 5 > compound 4 > VC (reference) > compound 3. The results showed that these phenolic compounds contributed to the antioxidant activity of Pu-erh tea.

Authors+Show Affiliations

State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23187287

Citation

Zhang, Hai Ming, et al. "Antioxidant Phenolic Compounds From Pu-erh Tea." Molecules (Basel, Switzerland), vol. 17, no. 12, 2012, pp. 14037-45.
Zhang HM, Wang CF, Shen SM, et al. Antioxidant phenolic compounds from Pu-erh tea. Molecules. 2012;17(12):14037-45.
Zhang, H. M., Wang, C. F., Shen, S. M., Wang, G. L., Liu, P., Liu, Z. M., Wang, Y. Y., Du, S. S., Liu, Z. L., & Deng, Z. W. (2012). Antioxidant phenolic compounds from Pu-erh tea. Molecules (Basel, Switzerland), 17(12), 14037-45. https://doi.org/10.3390/molecules171214037
Zhang HM, et al. Antioxidant Phenolic Compounds From Pu-erh Tea. Molecules. 2012 Nov 27;17(12):14037-45. PubMed PMID: 23187287.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant phenolic compounds from Pu-erh tea. AU - Zhang,Hai Ming, AU - Wang,Cheng Fang, AU - Shen,Sheng Min, AU - Wang,Gang Li, AU - Liu,Peng, AU - Liu,Zi Mu, AU - Wang,Yong Yan, AU - Du,Shu Shan, AU - Liu,Zhi Long, AU - Deng,Zhi Wei, Y1 - 2012/11/27/ PY - 2012/08/28/received PY - 2012/11/18/revised PY - 2012/11/23/accepted PY - 2012/11/29/entrez PY - 2012/11/29/pubmed PY - 2013/6/1/medline SP - 14037 EP - 45 JF - Molecules (Basel, Switzerland) JO - Molecules VL - 17 IS - 12 N2 - Eight compounds were isolated from the water extract of Pu-erh tea and their structures were elucidated by NMR and MS as gallic acid (1), (+)-catechin (2), (−)-epicatechin (3), (−)-epicatechin-3-O-gallate (4), (−)-epigallocatechin-3-O-gallate (5), (−)-epiafzelechin- 3-O-gallate (6), kaempferol (7), and quercetin (8). Their in vitro antioxidant activities were assessed by the DPPH and ABTS scavenging methods with microplate assays. The relative order of DPPH scavenging capacity for these compounds was compound 8 > compound 7 > compound 1 > compound 6 > compound 4 ≈ compound 5 > compound 2 > VC (reference) > compound 3, and that of ABTS scavenging capacity was compound 1 > compound 2 > compound 7 ≈ compound 8 > compound 6 > compound 5 > compound 4 > VC (reference) > compound 3. The results showed that these phenolic compounds contributed to the antioxidant activity of Pu-erh tea. SN - 1420-3049 UR - https://www.unboundmedicine.com/medline/citation/23187287/Antioxidant_phenolic_compounds_from_Pu_erh_tea_ L2 - http://www.mdpi.com/resolver?pii=molecules171214037 DB - PRIME DP - Unbound Medicine ER -