J Agric Food Chem. 2015 Jan 14;63(1):169-76. doi: 10.1021/jf503700v.
Consumption of plant foods has been negatively associated with the risk of developing chronic diseases, which is partly attributed to their rich and diverse phytochemicals. To promote the rational and effective application of Adinandra tea (Adinandra Jack), a traditional Chinese tea (Shiyacha) widely consumed as a health beverage, the complete phytochemical profile and antioxidant activity of four varieties of Adinandra tea were analyzed. They were rich in phenolics and flavonoids, ranging from 71.29 to 140.54 mg of gallic acid equivalent/g and from 19.13 to 88.72 mg of catechin equivalent/g, respectively. Their antioxidant capacities were high, as revealed by oxygen radical absorbance capacity, peroxyl radical scavenging capacity, and cellular antioxidant activity (CAA) assays. An obvious antiproliferation effect was observed in HepG2 and MCF-7 cells, with EC50 ranging from 1.05 to 6.44 mg/mL and from 2.26 to 8.02 mg/mL, respectively. Among the four varieties compared, Nitida and Millettii had a higher CAA value and antiproliferation activity, while Latifolia contained considerable bound phenolics.
植物性食物的消费与慢性病风险呈负相关，这在一定程度上归因于它们丰富多样的植物化学物质。为了促进作为健康饮料广泛消费的传统中国茶（石崖茶）阿德林德拉茶的合理有效应用，分析了四种阿德林德拉茶的完整植物化学特征和抗氧化活性。它们富含酚类和类黄酮，分别为 71.29 至 140.54 毫克没食子酸当量/克和 19.13 至 88.72 毫克儿茶素当量/克。它们的抗氧化能力很高，氧自由基吸收能力、过氧自由基清除能力和细胞抗氧化活性（CAA）测定均证实了这一点。在 HepG2 和 MCF-7 细胞中观察到明显的增殖抑制作用，EC50 范围分别为 1.05 至 6.44 毫克/毫升和 2.26 至 8.02 毫克/毫升。在比较的四个品种中，Nitida 和 Millettii 的 CAA 值和增殖抑制活性较高，而 Latifolia 含有相当数量的结合酚类物质。
