ScholarLens Back to search
2010•Xiandai shipin kejiRequires access

Antioxidant activity of water extract from different Pu-erh tea.

Yanni Cao, Tongxun Liu

Open publisher page 0 citations

Abstract

The antioxidant activity in vitro of water extract of ten kinds of tea(raw and ripened pu-erh with different storage time) was studied and the contents of tea polyphenols and catechin were determined.Results showed that TP and catechin contents in raw pu-erh tea were significantly higher than those of raped pu-erh.TP and catechins contents in both raw and raped pu-erh decreased with the increase of storage years.The IC50 values of the tea water extracts were 0.254～0.720 mg/mL and 2.369～5.837 mg/mL for scavenging DPPH and oxygen free radical,respectively.The EC50 of the tea extracts was 0.180～0.427 mg/mL.

About this research paper

What this paper is about

The antioxidant activity in vitro of water extract of ten kinds of tea(raw and ripened pu-erh with different storage time) was studied and the contents of tea polyphenols and catechin were determined.Results showed that TP and catechin contents in raw pu-erh tea were significantly higher than those of raped pu-erh.TP and catechins contents in both raw and raped pu-erh decreased with the increase of storage years.The IC50 values of the tea water extracts were 0.254～0.720 mg/mL and 2.369～5.837 mg/mL for scavenging DPPH and oxygen free radical,respectively.The EC50 of the tea extracts was 0.180～0.427 mg/mL.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

The antioxidant activity in vitro of water extract of ten kinds of tea(raw and ripened pu-erh with different storage time) was studied and the contents of tea polyphenols and catechin were determined.Results showed that TP and catechin contents in raw pu-erh tea were significantly higher than those of raped pu-erh.TP and catechins contents in both raw and raped pu-erh decreased with the increase of storage years.The IC50 values of the tea water extracts were 0.254～0.720 mg/mL and 2.369～5.837 mg/mL for scavenging DPPH and oxygen free radical,respectively.The EC50 of the tea extracts was 0.180～0.427 mg/mL.

Key concepts: Chemistry, Catechin, Polyphenol, Food science, Antioxidant, DPPH, EC50, Raw material

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Antioxidant activity of water extract from different Pu-erh tea. — Research Paper | ScholarLens