Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (12): 2390-2396.DOI: 10.3969/j.issn.1004-1524.2021.12.19

• Food Science • Previous Articles     Next Articles

Optimization of preparation process of walnut (Carya cathayensis Sarg.) oil gel

ZHOU Qiang1,2(), HAN Yanchao2, WU Weijie2, DING Yuting1, SHAO Ping1, TONG Chuan1, GAO Haiyan2,*()   

  1. 1. College of Food Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China
    2. Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs,Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Hangzhou 310021, China
  • Received:2021-09-08 Online:2021-12-25 Published:2022-01-10
  • Contact: GAO Haiyan

Abstract:

Walnut (Carya cathayensis Sarg.) oil is rich in oleic acid and linoleic acid, which can reduce blood lipid content, prevent cardiovascular diseases, and has anti-oxidation effects. However, it is extremely susceptible to environmental influences to oxidize unsaturated fatty acids. Grease gel can prevent its oxidation. The research used glyceryl monostearate as gelling agent and walnut oil as carrier oil to prepare walnut oil gel. The influence of different process conditions on walnut oil gel was studied. The results showed that the influence of various factors on the walnut oil gel was as follows: gelling agent addition amount>heating temperature>heating time. The process conditions of gelling agent addition of 12%, heating time of 30 min, and heating temperature of 80 ℃ were relatively good. The peroxide value of the grease gel prepared under all process conditions meets the regulations in GB 15196-2015.

Key words: walnut oil, gel, process optimization

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