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176597

COMPARATIVE STUDY BETWEEN THE EGYPTIAN AND CHINESE GREEN TEA (CHEMICAL COMPOSITION, PHENOLIC COMPOUNDS AND ANTIOXIDANT ACTIVITY)

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Last updated: 26 Dec 2024

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Abstract

Chemical composition and the antioxidant activity of Egyptian and Chinese tea extracts (ethanol, water, hot water and boiling water) were investigated. Egyptian green tea leaves contains total ash 8.77%, total lipids 7.1%, crude protein 17.6%, and total carbohydrates 7.5%.While Chinese green tea leaves contains total ash 7.8%, total lipids 7.05%, crude protein 18.2%, and total carbohydrates 7.44%. Total phenolics in Egyptian green tea extracts has been ranged from 113.7 to 259.1 mg/g while total flavonoids has been ranged from 87.6 to 185.9 mg/g, comparing with 89.4 to 229.1 mg/g   and  79.7 to 181 mg/g of total phenolic and total flavonoid respectively in Chinese green tea extracts . HPLC results showed that Egyptian and Chinese green tea were found to contain 18 of phenolic compounds, among them Caffeine, epicatechin, cinnamic acid, reverstrol, Salycilic acid and Ferulic acid were the major active constituents. All extracts showed high antioxidant activity in both concentration (2.5 and 5%). Ethanolic extract showed the highest activity in reducing power assay compared other extracts and boiling water extract showed the lowest activity. Egyptian green tea showed high content from both total phenolics and falvonoids and also showed high antioxidant activity compared with Chinese green tea.

DOI

10.21608/mjab.2016.176597

Keywords

green tea, Total Phenolics, Antioxidant activity, Reducing power

Authors

First Name

F. M.

Last Name

El-shuony

MiddleName

-

Affiliation

Biochemistry department, Faculty of Agriculture, Menoufia University

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First Name

S. A.

Last Name

El- Kadousy

MiddleName

-

Affiliation

Biochemistry department, Faculty of Agriculture, Menoufia University

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Orcid

-

First Name

M. M.

Last Name

Abozid

MiddleName

-

Affiliation

Biochemistry department, Faculty of Agriculture, Menoufia University

Email

-

City

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Orcid

-

First Name

A. A.

Last Name

Abd el-Fattah

MiddleName

-

Affiliation

Benha health administration

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-

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Orcid

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Volume

1

Article Issue

1

Related Issue

25581

Issue Date

2016-08-01

Receive Date

2021-06-09

Publish Date

2016-08-01

Page Start

13

Page End

22

Print ISSN

2357-0768

Online ISSN

2735-3532

Article File

MJAB_Volume 1_Issue 1_Pages 13-22.pdf

PDF . 727.8kB

Link

https://mjab.journals.ekb.eg/article_176597.html

Detail API

https://mjab.journals.ekb.eg/service?article_code=176597

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2

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original papers

Type Code

1,460

Publication Type

Journal

Publication Title

Menoufia Journal of Agricultural Biotechnology

Publication Link

https://mjab.journals.ekb.eg/

MainTitle

COMPARATIVE STUDY BETWEEN THE EGYPTIAN AND CHINESE GREEN TEA (CHEMICAL COMPOSITION, PHENOLIC COMPOUNDS AND ANTIOXIDANT ACTIVITY)

Details

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Article

Created At

23 Jan 2023