The differentiation of extracts and tea forms obtained from Garcinia schomburgkiana leaves helped to deeper understand of impact of tea infusion on biological activity. This study indicated major components, such as carbohydrates, lipids, fatty acids, proteins, amino acids, phenyl groups, alcohol, and isoprenoids in the extracts and different tea forms. The result showed that ethanol extract revealed significantly the strongest total phenolic content and antioxidant activity. Powder tea from old leaf showed significantly the highest total phenolic content and antioxidant activity at 3 and 5 min infusion time, while old leaf tea showed the highest amylase inhibition at 7 min. Interestingly, very strong positive correlation between total phenolic content and antioxidant activity, between FTIR spectra and total phenolic contents, and between FTIR spectra and antioxidant activity was found, significantly. Combining FTIR, PCA and cluster analysis obtained from the biological assays and FTIR data separated reliably ethanol extracts from other samples.

藤黄提取物和茶形式的鉴别树叶有助于深入了解输茶对生物活性的影响。这项研究指出了提取物和不同茶形式中的主要成分，例如碳水化合物，脂质，脂肪酸，蛋白质，氨基酸，苯基，醇和类异戊二烯。结果表明，乙醇提取物显示出最强的总酚含量和抗氧化活性。老叶茶粉在输注3和5分钟时显示出最高的总酚含量和抗氧化活性，而老叶茶在7分钟时显示出最高的淀粉酶抑制作用。有趣的是，发现总酚含量和抗氧化剂活性之间，FTIR光谱和总酚含量之间以及FTIR光谱和抗氧化剂活性之间有很强的正相关关系。结合FTIR，