Study of highly concentrated olive oil-in-water emulsions stabilized by palm-based nonionic surfactant

Hong Ngee Lim, Kassim Anuar, Nay Ming Huang, Mohd. Ambar Yarmo, Shoot Kian Yeong

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Rheological properties of highly concentrated oil-in-water (O/W) emulsions (HCES), formed by mixing palm-based nonionic surfactant, C12E6 (HLB = 11. 7, CMC = 25μM), water and olive oil volume fraction ≥78vol% were investigated. Samples with lower oil volume fraction (<85%) and surfactant concentration (<8%) exhibited polydispersity of broader droplet size distribution (DSD). In contrast, samples with higher oil volume fraction (>85%) and surfactant concentration (>8%) displayed monodispersity of narrower DSD. The average droplet size decreased with increasing oil volume fraction and surfactant concentration. All frequency sweep experiments exhibited higher G' than G", representing the predominantly elastic nature of HCES. The crossover of the ascendant and descendant flow curves of HCES with higher oil volume fraction (>85%) and surfactant concentration (>8%) implied a structural build-up that could give rise to very high stability. The high stability was confirmed through accelerated stability test at 40°C for three months.

Original languageEnglish
Pages (from-to)95-102
Number of pages8
JournalSains Malaysiana
Volume38
Issue number1
Publication statusPublished - Feb 2009

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Nonionic surfactants
Emulsions
Volume fraction
Oils
Surface-Active Agents
Water
Olive Oil
Experiments

Keywords

  • Highly concentrated O/W emulsion
  • Palm-based nonionic surfactant
  • Rheology

ASJC Scopus subject areas

  • General

Cite this

Study of highly concentrated olive oil-in-water emulsions stabilized by palm-based nonionic surfactant. / Lim, Hong Ngee; Anuar, Kassim; Huang, Nay Ming; Yarmo, Mohd. Ambar; Yeong, Shoot Kian.

In: Sains Malaysiana, Vol. 38, No. 1, 02.2009, p. 95-102.

Research output: Contribution to journalArticle

Lim, Hong Ngee ; Anuar, Kassim ; Huang, Nay Ming ; Yarmo, Mohd. Ambar ; Yeong, Shoot Kian. / Study of highly concentrated olive oil-in-water emulsions stabilized by palm-based nonionic surfactant. In: Sains Malaysiana. 2009 ; Vol. 38, No. 1. pp. 95-102.
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