Kunicka-Styczyńska A, Śmigielski K, Prusinowska R, Rajkowska K, Kuśmider B, Sikora M
Institute of Fermentation Technology and Microbiology, Biotechnology and Food Sciences Department, Lodz University of Technology, Lodz, Poland.
Lett Appl Microbiol. 2015 Jan;60(1):27-32. doi: 10.1111/lam.12346. Epub 2014 Nov 21.
The study was undertaken to verify the antimicrobial activity of Lavandula angustifolia hydrosols in moisturizing body gels. The inhibition efficacy of four lavender hydrosols (obtained from fresh or dry herbs or flowers) was tested against Staphylococcus aureus ATCC 6538, Escherichia coli ATCC 1627, Candida sp. ŁOCK 0008 and Aspergillus niger ATCC 16404 in compliance with the standards of the European Pharmacopoeia Commission. Although the tested hydrosols did not express any remarkable antimicrobial action when tested via the macrodilution method, they show preservative activity in cosmetic preparations. Criterion A for fungi was fulfilled for the cosmetic formulation containing dried flower hydrosol (reduction of the inoculum by two logarithmic units within 14 days with no increase up to the 28th day) and Criterion B for bacteria E. coli and Staph. aureus (reduction of the inoculum by three logarithmic units within 14 days with no increase up to the 28th day). The fresh herb lavender hydrosol in the cosmetic formulation was regarded as the second one effectively satisfying Criterion B for bacteria, but its activity against fungi was below the acceptance value set out in the official regulations. Lavender hydrosols used as a replacement for water phase in cosmetics may contribute to maintaining microbiological stability of cosmetic formulations.
The presented research proved antimicrobial activity of hydrosols obtained from fresh or dried Lavandula angustifolia herbs or flowers in moisturizing body gel. The study shows the usefulness of lavender hydrosols as a natural, ecologically friendly component of cosmetics with potential preservative activity in formulations. Hydrosols are commonly regarded as waste in the production of essential oils. The use of lavender hydrosols in the cosmetic industry as a replacement for water phase in cosmetics may not only result in expenses reduction for chemical stabilizers and preservatives but also in substantial decrease in sewage disposal.
本研究旨在验证薰衣草纯露在保湿身体凝胶中的抗菌活性。按照欧洲药典委员会的标准，测试了四种薰衣草纯露（从新鲜或干燥的草本植物或花朵中提取）对金黄色葡萄球菌ATCC 6538、大肠杆菌ATCC 1627、念珠菌属ŁOCK 0008和黑曲霉ATCC 16404的抑制效果。尽管通过宏观稀释法测试时，所测试的纯露未表现出任何显著的抗菌作用，但它们在化妆品制剂中显示出防腐活性。含有干花纯露的化妆品配方满足了真菌的A标准（在14天内接种量减少两个对数单位，至第28天无增加）以及大肠杆菌和金黄色葡萄球菌的B标准（在14天内接种量减少三个对数单位，至第28天无增加）。化妆品配方中的新鲜草本薰衣草纯露被视为有效满足细菌B标准的第二种产品，但其对真菌的活性低于官方规定的接受值。用作化妆品水相替代品的薰衣草纯露可能有助于维持化妆品配方的微生物稳定性。
本研究证明了从新鲜或干燥的薰衣草草本植物或花朵中提取的纯露在保湿身体凝胶中的抗菌活性。该研究表明薰衣草纯露作为化妆品的天然、生态友好成分在配方中具有潜在的防腐活性。纯露在香精油生产中通常被视为废料。在化妆品行业中使用薰衣草纯露作为化妆品水相的替代品，不仅可以降低化学稳定剂和防腐剂的成本，还可以大幅减少污水处理量。
