FOOD SCIENCE

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Prediction of the Quality Changes of Soybean Oil during Storage

TANG Ruili, YUAN Xianwen, FENG Yanling, HAN Hongling, DONG Yue, GAO Yulong*, YUAN Jian, WANG Haifeng, JU Xingrong   

  1. Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and
    Processing, College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
  • Online:2016-09-25 Published:2016-09-26
  • Contact: GAO Yulong

Abstract:

In this investigation, the effects of storage time, the amount of antioxidants and moisture content on the quality of
soybean oil (commercially available, grade 1) were studied during storage at 40 ℃. These three factors were investigated by
one-factor-at-a-time method and then they were taken as independent variables for further optimization by response surface
methodology using Box-Behnken design. The quality parameters peroxide value and oxidative stability index were selected
as response variables. A quadratic polynomial predictive model for each response was developed. The results showed that all
the three factors had a significant impact on peroxide value and oxidative stability index in soybean oil. Analysis of variance
demonstrated that the two models were highly statistically significant (P < 0.001) and had small error. They had high
goodness of fit at the same time.

Key words: soybean oil, peroxide value (POV), oxidative stability index (OSI), response surface methodology, prediction model

CLC Number: