Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products
Epidemiological studies have proven the influences of tea consumption in prevention of chronic diseases. Tea (Camellia sinensis) is a major source of epigallocatechin-3-gallate (EGCG) compound with pharmacological properties such as anti-obesity, anti-diabetes, anti-inflammation. The aims of this st...
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| Format: | Article |
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Preprints
2018
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| author | Amran, Syazwani Itri Ahmad Muhamud, Nurul Ain Syukriyah |
| author_facet | Amran, Syazwani Itri Ahmad Muhamud, Nurul Ain Syukriyah |
| author_sort | Amran, Syazwani Itri |
| collection | ePrints |
| description | Epidemiological studies have proven the influences of tea consumption in prevention of chronic diseases. Tea (Camellia sinensis) is a major source of epigallocatechin-3-gallate (EGCG) compound with pharmacological properties such as anti-obesity, anti-diabetes, anti-inflammation. The aims of this study is to analyze and compare the EGCG content in commercialized tea-based products, infusion tea and ready-to-drink tea beverages available in the local market. This study is divided into two phases. The first phase involved the extraction of EGCG compound from four types of tea namely as white tea (WT), green tea (GT), oolong tea (OT) and black tea (BT) using aqueous and methanol extraction techniques. The amount of EGCG is determined using HPLC. The second phase involved the characterization of EGCG compound in infusion tea bags (ITB) and ready-to-drink tea beverages (RTD) using HPLC. Our findings recorded that GT contain the highest EGCG concentration in comparison to other tea types using both methanol and aqueous extraction methods. Temperature and extraction time have influence on the extraction yield. This study also revealed that ready-to-drink tea beverages contains significantly lower level of EGCG compared to the infusion tea hence makes ready-to-drink beverages less healthy for consumption especially for obese and diabetics individuals. |
| first_indexed | 2024-03-05T20:28:02Z |
| format | Article |
| id | utm.eprints-82131 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:28:02Z |
| publishDate | 2018 |
| publisher | Preprints |
| record_format | dspace |
| spelling | utm.eprints-821312019-11-04T08:13:47Z http://eprints.utm.my/82131/ Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products Amran, Syazwani Itri Ahmad Muhamud, Nurul Ain Syukriyah QH Natural history Epidemiological studies have proven the influences of tea consumption in prevention of chronic diseases. Tea (Camellia sinensis) is a major source of epigallocatechin-3-gallate (EGCG) compound with pharmacological properties such as anti-obesity, anti-diabetes, anti-inflammation. The aims of this study is to analyze and compare the EGCG content in commercialized tea-based products, infusion tea and ready-to-drink tea beverages available in the local market. This study is divided into two phases. The first phase involved the extraction of EGCG compound from four types of tea namely as white tea (WT), green tea (GT), oolong tea (OT) and black tea (BT) using aqueous and methanol extraction techniques. The amount of EGCG is determined using HPLC. The second phase involved the characterization of EGCG compound in infusion tea bags (ITB) and ready-to-drink tea beverages (RTD) using HPLC. Our findings recorded that GT contain the highest EGCG concentration in comparison to other tea types using both methanol and aqueous extraction methods. Temperature and extraction time have influence on the extraction yield. This study also revealed that ready-to-drink tea beverages contains significantly lower level of EGCG compared to the infusion tea hence makes ready-to-drink beverages less healthy for consumption especially for obese and diabetics individuals. Preprints 2018 Article PeerReviewed Amran, Syazwani Itri and Ahmad Muhamud, Nurul Ain Syukriyah (2018) Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products. Natural Products Chemistry & Research, 6 (5). pp. 39-43. ISSN 2329-6836 http://dx.doi.org/10.20944/preprints201808.0192.v1 Doi:10.20944/preprints201808.0192.v1 |
| spellingShingle | QH Natural history Amran, Syazwani Itri Ahmad Muhamud, Nurul Ain Syukriyah Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products |
| title | Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products |
| title_full | Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products |
| title_fullStr | Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products |
| title_full_unstemmed | Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products |
| title_short | Screening of epigallocatechin-3-gallate (EGCG) content in camellia sinensis products |
| title_sort | screening of epigallocatechin 3 gallate egcg content in camellia sinensis products |
| topic | QH Natural history |
| work_keys_str_mv | AT amransyazwaniitri screeningofepigallocatechin3gallateegcgcontentincamelliasinensisproducts AT ahmadmuhamudnurulainsyukriyah screeningofepigallocatechin3gallateegcgcontentincamelliasinensisproducts |