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Abstract
Abstract Diversification of products that are derived from essential oils carries important implications in reducing agricultural waste and promoting the medicinal materials industry. In this study, we formulated a shampoo and a body wash product incorporated with lemongrass (Cymbopogon citratus) essential oils (LEOs) and evaluated their color stability and the LEO compositional change. We first determined the color change and chemical composition of bare LEO under different storage conditions. Afterward, the washing product base was formulated, and its formulation process was optimized to minimize the color change by varying a wide range of parameters including pH, the inclusion of preservatives and antioxidants, LEO/antioxidant ratio, and emulsification temperature. The base product was then used in body wash and shampoo formulation following our previously reported procedure. The results indicated that direct incorporation of the LEO into the cosmetic products resulted in better color stability and citral retention in comparison with emulsion formation. In addition, shampoo and body wash products showed no detectible presence of compounds resulting from citral decomposition such as 3,7-dimethyl-1,3,6-octatriene, p-mentha-1,5-dien-8-ol, and p-cymene-8-ol. The current findings are expected to aid in diversifying LEO-derived commodities and justifying scalability of the cosmetics production process with a focus on the incorporation of naturally derived ingredients.
Highlights
Lemongrass (Cymbopogon citratus) is a common plant ingredient that is used widely in daily applications and in folk medicine [1–4]
The main product derived from the lemongrass plant, lemongrass essential oil (LEO), is a commodity that is widely used in the food industry due to its predominant content of citral in its composition, which confers the lemongrass (Cymbopogon citratus) essential oils (LEOs) with potent antibacterial activity and pleasant, favorable aroma [5–8]
Driven by the aforementioned trusts, this study aims to evaluate the stability of LEO in the formulation of various cosmetic products
Summary
Lemongrass (Cymbopogon citratus) is a common plant ingredient that is used widely in daily applications and in folk medicine [1–4]. The main product derived from the lemongrass plant, lemongrass essential oil (LEO), is a commodity that is widely used in the food industry due to its predominant content of citral in its composition, which confers the LEO with potent antibacterial activity and pleasant, favorable aroma [5–8]. The LEO is a common material in the manufacture of medicinal products such as antifungal agents, antidepressants, and indigestion remedies. New and novel attempts to incorporate LEO into consumers’ products such as personal care and home products are essential to the valorization of lemongrass and contribute to ease the burden of lemongrass output in the upcoming years [9,10]
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