Journal of the American Oil Chemists' Society

, Volume 90, Issue 3, pp 349–357 | Cite as

Simplex-Centroid Mixture Design Applied to the Aqueous Enzymatic Extraction of Fatty Acid-Balanced Oil from Mixed Seeds

  • Yang Li
  • Yan Zhang
  • Mei Wang
  • Lianzhou Jiang
  • Xiaonan Sui
Original Paper

Abstract

A one-step method was developed to extract oil from a mixture of soybeans, peanuts, linseeds, and tea seeds using an aqueous enzymatic method. The proportion of the four seeds was targeted in accordance with a fatty acid ratio of 0.27 (SFA, saturated fatty acid(s)): 1 (MUFA, monounsaturated fatty acid(s)): 1 (PUFA, polyunsaturated fatty acid(s)), and the oil extraction yield was maximized by applying the simplex-centroid mixture design method. Three models were developed for describing the relationship between the proportion of the individual seeds in the mixture, the fatty acid ratio in the extracted oil, and the oil extraction yield, respectively. The developed models were then analyzed using an ANOVA and were found to fit the data quite well, with R2 values of 0.98, 0.93, and 0.93, respectively. The three models were validated experimentally. The results indicated that the ratio of fatty acids in the oil ranged between 0.98 and 1.12 (MUFA:PUFA) and between 0.26 and 0.28 (SFA:MUFA), which were quite close to the target values of 1 and 0.27, respectively. The oil extraction yield of 62.13 % was slightly higher than the predicted value (60.32 %).

Keywords

Oil blend Aqueous enzymatic extraction Fatty acids Mixture design Mixed seeds 

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Copyright information

© AOCS 2012

Authors and Affiliations

  • Yang Li
    • 1
    • 2
  • Yan Zhang
    • 1
    • 2
  • Mei Wang
    • 1
    • 2
  • Lianzhou Jiang
    • 1
    • 2
  • Xiaonan Sui
    • 1
    • 2
  1. 1.College of Food ScienceNortheast Agricultural UniversityHarbinChina
  2. 2.National Research Center of Soybean Engineering and TechnologyHarbinChina

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