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Published on: July 27, 2022
Optimisation and characterization of double emulsion derived from rice starch, rice protein isolates and rice bran
Hadiza Kabir Bako1, Henry Isaiah Ibeogu2, Anthony Pius Bassey2
1State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing, and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, China; Department Of Food Science and Technology Bayero University Kano, Nigeria.
Abstract:
This study focused on the development and evaluation of a stable emulsion system using rice starch, protein isolates, and bran oil as food ingredients. This was performed using a one-factor-at-a-time (OFAT) experimental strategy, which was subsequently refined using response surface modeling (RSM), and the emulsion was then characterized. The resulting quadratic polynomial model effectively captured all the responses, with regression coefficients exceeding 0.90. The emulsion activity index, emulsion stability index, and droplet size were 86.29 %, 93.44 %, and 100.59 nm, respectively. Turbidity was significantly influenced by particle size, with the double emulsion (sample B) exhibiting higher turbidity index (43,250.34 ± 0.046) than the reference sample (29,433.303 ± 0.018). The viscosity of the emulsion increased with the addition of the protein isolates. This inferred that a stable emulsion system derived from rice could serve a multifunctional purpose as carriers, fillers, and binders to enhance the physical, functional and sensory properties of foods.
