Bioactive compounds distribution in tea leaves from different maturity stages and altitude in Malaysia

High altitude young tea leaves are the most preferred raw material for high quality tea production while old tea leaves were considered low quality. This study examined the chemical compounds in tea leaves such as (+)-catechin (C), (-)-epicatechin (EC), (-)- epigallocatechin (EGC), (-)-epicatechin gallate (ECG), (-)-epigallocatechin gallate (EGCG), caffeine, gamma aminobutyric acid (GABA) and total phenolics content (TPC) in different maturity stages of tea leaves from highland (HP01, HP02 and...