Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 24 Broniewskiego Street, 71-460 Szczecin, Poland.
Department of Studies in Aesthetic Dermatology, Pomeranian Medical University in Szczecin, 72, Powstańców Wielkopolskich Street, 70-111 Szczecin, Poland.
Biomed Pharmacother. 2021 Oct;142:112033. doi: 10.1016/j.biopha.2021.112033. Epub 2021 Aug 17.
Hydrolates, are by-products of the hydrodistillation of plants. They consist of the distillation water in which very small amounts of essential oils remain dispersed. Hydrosols are widely used in cosmetics. One of the greatest challenges in skin care, whether it is healthy or affected by a pathological condition, is how to minimize oxidative stress. Extract also lend themselves to applications in the agri-food industry, to inhibit the development of pathological microorganisms in food and to remove biofilms constituting a threat to public health in food, pharmaceuticals and beauty products. Therefore, the aim of this study was to analyze the antioxidant potential of hydrosols available in the cosmetics market, taking into account for the first time in scientific literature not only plant species, but also origin (country, farming system, part of plant) and method of preservation. Antioxidant activity, expressed as percentage inhibition of DPPH (1,1-diphenyl-2-picrylhydrazyl), ferric ion reducing antioxidant power (FRAP) and content of polyphenolic compounds (Folin-Ciocalteu method), was determined in seventeen hydrosols by spectrophotometric methods. Antioxidant potential was in the range of 4.43-39.87% of DPPH radical inhibition and 1325.65-5794.38 µM Fe(II)/L. Total phenolic content (TPC) in the hydrosols amounted to 9.33-44.23 mg GAE/L, while total flavonoid content (TFC) ranged from 1.48 to 14.82 mg rutin/L. The hydrosols had a pH in the range of 3.31-5.42. Conclusions: Plant hydrosols appear to have a high antioxidant potential, which depends on not only the plant species, but also its origin, part of the plant from which the hydrosol was obtained and the preservation method used in the finished product.
水醇提物是植物水蒸馏的副产物。它们由蒸馏水中非常少量的精油分散而成。水醇提物广泛应用于化妆品中。无论皮肤状况健康与否，最大的挑战之一是如何最大程度地减少氧化应激。提取物也适用于农业食品工业，以抑制食品中病理微生物的发展，并去除对食品、药品和美容产品公共健康构成威胁的生物膜。因此，本研究旨在分析市场上可获得的水醇提物的抗氧化潜力，首次考虑了科学文献中不仅包括植物种类，还包括来源（国家、农业系统、植物部位）和保存方法。通过分光光度法测定了十七种水醇提物的抗氧化活性，以 DPPH（1,1-二苯基-2-苦基肼）抑制百分比、铁离子还原抗氧化能力（FRAP）和多酚含量（福林- 氯代法）表示。抗氧化潜力在 4.43-39.87%的 DPPH 自由基抑制率和 1325.65-5794.38µM Fe(II)/L 之间。水醇提物中的总酚含量（TPC）为 9.33-44.23mg GAE/L，总黄酮含量（TFC）为 1.48-14.82mg 芦丁/L。水醇提物的 pH 值在 3.31-5.42 之间。结论：植物水醇提物似乎具有很高的抗氧化潜力，这不仅取决于植物种类，还取决于其来源、植物部位以及成品中使用的保存方法。
