Extraction of Catechin Compounds from Green Tea with a New Green Solvent

• Published in: Chemical research in Chinese universities Vol. 30; no. 1; pp. 37 - 41
• Main Authors: Zhang, Heng, Tang, Baokun, Row, Kyungho
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2014; Department of Chemistry and Chemical Engineering, Inha University, Incheon 402-751, Korea
• Subjects: Analytical Chemistry; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Inorganic Chemistry; Organic Chemistry; Physical Chemistry; 提取方法; 没食子酸酯; 生物活性成分; 类化合物; 绿色溶剂; 绿茶; 萃取溶剂; 表儿茶素; Catechin; Extraction; Deep eutectic solvent; High performance liquid chromatography
• ISSN: 1005-9040; 2210-3171
• DOI: 10.1007/s40242-014-3339-0

An emerging green solvent called a deep eutectic solvent（DES） was applied to the extraction and determination of catechin（C）,（＋）epicatechin gailate（ECG） and （-）epigallocatechin gallate（EGCG） from Chinese green tea.After evaluating different combinations of them by extraction methods and DESs,a DES-based extraction method was established and optimized by a systematic investigation of the influencing factors.As a result,a total of 3.629,35.25 or 114.2 mg/g catechin,（＋）epicatechin gallate or （-）epigaliocatechin gallate were extracted respectively under optimal conditions with extraction efficiencies of 82.7％,92.3％ and 97.0％,respectively.By comparing with other common used solvents for extracting catechin compounds,DESs were proved to be potential extraction solvents for bioactive ingredients.