Fabrication of peppermint essential oil nanoemulsions by spontaneous method: Effect of preparing conditions on droplet size,Flavour and Fragrance Journal

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Fabrication of peppermint essential oil nanoemulsions by spontaneous method: Effect of preparing conditions on droplet size
Flavour and Fragrance Journal ( IF 2.1 ) Pub Date : 2018-06-19 , DOI: 10.1002/ffj.3455
Hassan Barzegar ₁ , Mohammad Amin Mehrnia ₁ , Behzad Nasehi _{1,

2} , Mohammad Alipour ₁

Affiliation

Peppermint essential oil is used in food, cosmetics, and pharmaceutical industries. The fabrication of peppermint nanoemulsion can increase its efficiency at lower concentrations. Spontaneous emulsification is a low‐energy method based on the characteristics of the surfactant. Factors affecting the interfacial properties of organic and aqueous phases at the time of mixing can influence the formation and droplet size of emulsions. In this study, nonionic surfactants of Tween 20, Tween 40, and Tween 80 were used to prepare peppermint microemulsions. After selecting an appropriate surfactant, the effect of stirring speed, organic phase temperature, storage for 90 days, and different surfactant‐to‐oil ratios were evaluated to investigate the emulsifying ability of the surfactant under different conditions and concentrations. The results showed that the best microemulsion was formed using Tween 80 with a droplet size of around 50 nm. Varying the surfactant‐to‐oil ratio from 50 to 225%, we found that a nanoemulsion was formed at all concentrations. Moreover, we found that the speed of mixing of organic and aqueous phases and the temperature of the organic phase affects the droplet size. At higher surfactant‐to‐oil ratios, storing the microemulsion for 90 days decreased its droplet size and increased transparency.

中文翻译：

自发法制备薄荷精油纳米乳剂：制备条件对液滴大小的影响

薄荷精油用于食品，化妆品和制药行业。薄荷纳米乳液的制备可以提高其在较低浓度下的效率。自发乳化是一种基于表面活性剂特性的低能耗方法。混合时影响有机相和水相界面性质的因素会影响乳液的形成和液滴尺寸。在这项研究中，吐温20，吐温40和吐温80的非离子表面活性剂用于制备薄荷微乳液。选择合适的表面活性剂后，评估搅拌速度，有机相温度，储存90天以及不同表面活性剂与油比的影响，以研究表面活性剂在不同条件和浓度下的乳化能力。结果表明，使用吐温80形成的最佳微乳液的液滴大小约为50 nm。将表面活性剂与油的比例从50改变为225％，我们发现在所有浓度下均会形成纳米乳液。此外，我们发现有机相和水相的混合速度以及有机相的温度会影响液滴的大小。在较高的表面活性剂/油比下，将微乳液储存90天会减小其液滴大小并提高透明度。

更新日期：2018-06-19

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