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http://dx.doi.org/10.14478/ace.2019.1090

Preparation of Coconut Oil in Water Emulsions Using Tween-Span Type Mixed Surfactant : Optimization of CCD-RSM  

Yoo, Bong-Ho (College of Engineering, Dankook University)
Zhu, Kaiyang (Department of Chemical Engineering, Dankook University)
Zuo, Chengliang (Department of Chemical Engineering, Dankook University)
Lee, Seung Bum (Department of Chemical Engineering, Dankook University)
Publication Information
Applied Chemistry for Engineering / v.31, no.1, 2020 , pp. 19-24 More about this Journal
Abstract
In this study, the O/W emulsions prepared from coconut oil and the non-ionic mixed surfactant as Tween-Span system were evaluated and optimized in order to upgrade the stability of manufactured emulsions. For the optimization, a central composite design model-response surface methodology, so called as CCD-RSM was implemented. Quantitative factors were the hydrophile-lipophilie balance (HLB), amount of non-ionic mixed surfactant and emulsification speed while experimental results included the mean droplet size (MDS), emulsion stability index (ESI), and thermal instability index (TII). Optimized values of the HLB, amount of non-ionic mixed surfactant and emulsification speed obtained from CCD-RSM were 9.1, 8.7 wt.%, and 6,200.8 rpm, respectively. Expected experimental results for MDS, ESI, and TII under the optimized experimental condition were 151.0 nm, 99.86, and 3.17%, respectively. The average error from actual experiments which established for validation of the conclusions was lower than 3.5%. Therefore, a highly favorable level could be obtained when the optimized CCD-RSM was applied to manufacturing the O/W emulsion in this study.
Keywords
O/W emulsion; CCD-RSM; Coconut oil; Non-ionic mixed surfactant;
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