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Selected Extracts from High Mountain Plants as Potential Sunscreens with Antioxidant Capacity
Photochemistry and Photobiology ( IF 2.6 ) Pub Date : 2021-07-21 , DOI: 10.1111/php.13490
Juan C Mejía-Giraldo 1, 2 , Cecilia Gallardo 2 , Miguel A Puertas-Mejía 1
Affiliation  

The photoprotective and antioxidant activities of extracts of six species of plants collected in a high mountain ecosystem at 3150 m.a.s.l. were evaluated. In vitro photoprotection according to UVA-UVB absorption spectrum, Sun Protection Factor (SPF), UVA Protection Factor (UVAPF), (critical wavelength) λc and UVA/UVB Ratio were assessed. Also, the antioxidant activity was determined using the DPPH radical assay and the inhibition of lipid peroxidation in methyl linoleate (MeLo). Total anthocyanins content (TAC) and total polyphenolic content (TPC) were evaluated. Among the extracts evaluated, the extract of B. antioquensis, an endemic plant of Colombia, showed a significant photoprotection against UVA-UVB range, with SPF values of 15 ± 2 and UVAPF of 7 ± 1, λc: 378, UVA/UVB Ratio: 0.78. Furthermore, this extract presented an excellent antioxidant activity, with EC50 of 0.17 ± 0.04 g of dry extract/mmol DPPH, a value of TPC of 464 ± 9 mg gallic acid equivalents (GAE)/g dry extract and significant inhibition of MeLo peroxidation. The results suggest that the extract of B. antioquensis has the best quality to be a source of new UV filters, with a broad spectrum of protection and antioxidant properties.

中文翻译:

高山植物提取物作为具有抗氧化能力的潜在防晒剂

评估了在 3150 masl 的高山生态系统中采集的六种植物提取物的光保护和抗氧化活性。根据 UVA-UVB 吸收光谱、防晒系数 (SPF)、UVA 保护系数 (UVAPF)、(临界波长)λ c和 UVA/UVB 比率评估体外光保护。此外,使用 DPPH 自由基测定法和亚油酸甲酯 (MeLo) 中脂质过氧化的抑制作用测定了抗氧化活性。评估了总花青素含量 (TAC) 和总多酚含量 (TPC)。在评价的提取物中,B的提取物。 安提奥昆哥伦比亚特有植物,对 UVA-UVB 范围有显着的光保护作用,SPF 值为 15 ± 2,UVAPF 为 7 ± 1,λ c:378,UVA/UVB 比值:0.78。此外,该提取物具有优异的抗氧化活性,EC 50为 0.17 ± 0.04 g 干提取物/mmol DPPH,TPC 值为 464 ± 9 mg 没食子酸当量 (GAE)/g 干提取物,并显着抑制 MeLo 过氧化. 结果表明,B的提取物。 antioquensis具有最佳品质,可作为新型紫外线过滤剂的来源,具有广泛的保护和抗氧化特性。
更新日期:2021-07-21
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