The distribution of catechins and their derivatives among 114 Camellia plants and their correlation in different species and tea-processing suitability

作者：Yong Luo, Jiaming Chen, Jianlong Li, Linghong Zhou, Wei XiaoYi, Jinghua Xue · 发表于：Food Chemistry X · 年份：2025 · DOI：10.1016/j.fochx.2025.102461 · 被引用次数：5 · 研究领域：Tea Polyphenols and Effects、Phytochemicals and Antioxidant Activities、Food Quality and Safety Studies

China is rich in tea germplasm resources. Catechins and their derivatives were analyzed regarding their associations among species and tea-processing suitability using 114 representative Camellia plants. GCG, ECG, EGC, ECG3″Me, and EGCG were revealed as potentially useful markers for identifying different tea species, while three O -methylated catechins may be appropriate markers for determining the tea-processing suitability of oolong tea. A correlation analysis indicated that the EGCG3″Me content was significantly higher in varieties suitable for oolong tea than in varieties suitable for black and green teas. Catechin (C, GC, CG, and GCG) contents were significantly higher in Camellia ptilophylla Chang than in Camellia sinensis var. sinensis , Camellia sinensis var. assamica , and Camellia sinensis var. pubilimba Chang. Furthermore, 14 specific tea tree resources with a high catechin index and high EGCG, GCG, and EGCG3″Me contents were screened. This research enhances our understanding of associations among catechins and tea germplasm resources. • Thirteen catechin components were obtained from 114 Camellia plants. • Catechins (C, GC, CG, GCG) were significantly higher in Camellia ptilophylla. • EGCG3″Me was significantly higher in varieties suitable for oolong tea. • The compositions of catechins were strong associations among the compounds. • Fourteen specific tea tree resources were screened from 114 Camellia plants.