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Optimization of extraction process of Macadamia nut oil by response surface methodology and determination of its physicochemical properties
  
DOI：10.12166/j.zgyz.1003-7969/2020.03.004
KeyWord:flash-extraction  Macadamia nut  Macadamia nut oil  response surface methodology  physicochemical property
FundProject:安徽省教育厅质量工程项目（2018mooc432，2019 jxjj45）；安徽新华学院基层教研室示范项目（2019jyssfx02）
Author NameAffiliation
FENG Xuehua WANG Wenjing Pharmacology College, Anhui Xinhua University, Hefei 230088, China 
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Abstract:
      With Macadamia nut from Hainan as raw material, the Macadamia nut oil was extracted by flash-extraction technology. With ratio of liquid to material, extraction voltage and extraction time as investigation factors, oil yield as investigation index, the flash-extraction process was optimized by response surface methodology and the physicochemical properties of the oil were determined. The results showed that the optimal extraction conditions of Macadamia nut oil were obtained as follows: ratio of liquid to material 9∶ 1, extraction voltage 100 V and extraction time 120 s. Under these conditions, the oil yield was 73.04%. The acid value, iodine value, saponification value and peroxide value of Macadamia nut oil were 1.20 mgKOH/g, 88.32 gI/100 g, 188.67 mgKOH/g and 3.06 mmol/kg, respectively.
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