A COMPARATIVE STUDY BETWEEN GREEN TEA (CAMELLIA SINENSIS) AND COMMON SAGE (SALVIA OFFICINALIS) (CHEMICAL COMPOSITION AND ACTIVE COMPOUNDS)

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Agriculture biochemistry department, Faculty of Agriculture, Menoufia University

Abstract

The purpose of this research is to study the chemical composition and effective compounds of leaves of green tea and sage as one of the traditional medicinal plants. It was found that green tea leaves collected from the local market contain 5.68 % moisture, 2.35% ash, 14.57 % protein, 8.55 % lipids, and 2.3% crude fiber. While sage leaves contained 8.19, 2.17, 12.21, 3.33, and 2.6 % moisture, ash, protein, lipids, and crude fiber, respectively. It was also found that green tea leaves contain 0.376 % Polyphenols and 0.188 % Flavonoids, while sage leaves contain 0.262 and 0.132 % Polyphenols and Flavonoids, respectively. HPLC showed that the aqueous extract of green tea leaves contains eighteen compounds of Polyphenols, fifteen compounds of them were identified. While the aqueous extract of sage leaves contains twenty-one compounds, nineteen of them were identified.

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