Journal of Tea Science Research, 2024, Vol.14, No.1, 52-56 http://hortherbpublisher.com/index.php/jtsr 55 Figure 5 Stability of Assam tea extract following 6 months storage under diferent conditions Note: A: Changes in color parameters of ATE after six months of storage under different conditions (4°C, room temperature, and 45°C). The color parameters of ATE showed no significant changes, indicating that its physicochemical properties remained stable. B: Changes in catechin content of ATE under the same storage conditions. During the six-month storage period, the catechin content in ATE decreased slightly (2-5%), but the relative change was less than 20%. This indicates that ATE has good chemical stability under these storage conditions 2 Insight of Research Findings The study found that ATE exhibited strong free radical scavenging activity in various antioxidant assays and demonstrated significant anti-photoaging and anti-inflammatory effects in human skin cells and co-culture models. Specifically, ATE significantly inhibited UV-induced expression of IL-6, IL-8, MMP-1, and MMP-9 while promoting the synthesis of hyaluronic acid and collagen. These results indicate that ATE has potential in the prevention and treatment of photoaging and aging.
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