Dos Santos Nascimento Luana Beatriz, Gori Antonella, Raffaelli Andrea, Ferrini Francesco, Brunetti Cecilia
Department of Agri-Food Production and Environmental Sciences (Florence), University of Florence, Sesto Fiorentino, 50019 Florence, Italy.
National Research Council of Italy, Institute for Sustainable Plant Protection (IPSP), Sesto Fiorentino, 50019 Florence, Italy.
Plants (Basel). 2021 Mar 10;10(3):522. doi: 10.3390/plants10030522.
The use of plant extracts in skin-care cosmetics is a modern trend due to their richness in polyphenols that act as anti-aging molecules. is a perennial species naturalized in Italy, with beautiful soft pink flowers; its phenolic composition and biological activities have not been studied yet. The aim of this study was to characterize and quantify the phenolics and to evaluate the antioxidant, sun protection factor (SPF), and anti-collagenase activities of the ethanolic extracts of leaves (HL) and flowers (HF). -Coumaric, chlorogenic, and -ferulic acids derivatives as well as quercetin and kaempferol flavonoids were the main phenolic compounds detected. Catechin, epicatechin, kaempferol-3--rutinoside, kaempferol-3--glucoside, kaempferol-7--glucoside, tiliroside, oenin, and peonidin-3--glucoside were detected only in HF, while phloridzin was exclusive from HL, which also showed greater amounts of hydroxycinnamic acid derivatives. HF was richer in flavonoids and total phenolics, also exhibiting greater antioxidant capacity. The SPF and anti-collagenase activity of both extracts were similar and comparable to those of synthetic standards. The overall results demonstrate that extracts are promising sources of bioactive phenolic compounds that could be potentially applied as anti-aging agents in skin-care cosmetics.
由于植物提取物富含具有抗老化作用的多酚类物质，因此在护肤化妆品中的应用成为一种现代趋势。[植物名称]是一种在意大利已归化的多年生植物，开美丽的浅粉色花朵；其酚类成分和生物活性尚未得到研究。本研究的目的是对[植物名称]叶（HL）和花（HF）的乙醇提取物中的酚类物质进行表征和定量，并评估其抗氧化、防晒系数（SPF）和抗胶原酶活性。检测到的主要酚类化合物有对香豆酸、绿原酸和阿魏酸衍生物以及槲皮素和山奈酚类黄酮。儿茶素、表儿茶素、山奈酚 - 3 - 芸香糖苷、山奈酚 - 3 - 葡萄糖苷、山奈酚 - 7 - 葡萄糖苷、椴树苷、oenin和芍药色素 - 3 - 葡萄糖苷仅在HF中检测到，而根皮苷仅在HL中存在，HL中还含有更多的羟基肉桂酸衍生物。HF中的类黄酮和总酚含量更高，抗氧化能力也更强。两种提取物的SPF和抗胶原酶活性相似，与合成标准品相当。总体结果表明，[植物名称]提取物是有前景的生物活性酚类化合物来源，有可能作为抗老化剂应用于护肤化妆品中。
