Food and Fermentation Industries >

2024 , Vol. 50 >Issue 10: 230 - 236

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.035730

Extraction of green plum kernel oil by microwave-assisted low liquid-solid ratio aqueous method

  • MAO Qi ,
  • QIN Xiaoli ,
  • HU Xiao ,
  • LIU Xiong ,
  • ZHONG Jinfeng
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  • (College of Food Science, Southwest University, Chongqing 400715, China)

Received date: 2023-04-05

  Revised date: 2023-05-15

  Online published: 2024-06-11

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Abstract

It is of great significance to explore a new method for the extraction of green plum kernel oil to expand the use of the new resource oil.The effect of liquid-solid ratio (the ratio of water volume to solid mass), NaCl concentration (the ratio of NaCl mass to the volume of added ultrapure water), microwave power and time on the extraction yield of green plum kernel oil was investigated.The effect of extraction methods (microwave-assisted low liquid-solid ratio aqueous method and organic solvent extraction method) on the extraction yield of green plum kernel oil and physicochemical properties was studied.The extraction yield of green prunus mume kernel oil was the highest at a low liquid-solid ratio (mL∶g) of 0.14, which was 21.28% higher than that obtained at a high liquid-solid ratio (mL∶g) of 1 (traditional aqueous method).Compared with no pretreatment, microwave (420 W, 80 s) pretreatment significantly improved the extraction yield of kernel oil (increased by 11.34%).In addition, compared with the organic solvent extraction method, the microwave-assisted low liquid-solid ratio aqueous method resulted in a relatively low acid value (2.22 mg/g), thiobarbituric acid value (0.014 mg/kg), peroxide value (0.17 mmol/kg), and high saponification value (179.82 mg/g) of green plum kernel oil.These two methods had no significant effect on the fatty acid composition, color, and DPPH free radical scavenging rate of green plum kernel oil.The results showed that the microwave-assisted low liquid-solid ratio aqueous method could effectively extract green plum kernel oil and the extraction rate and oil quality were good, which laid a foundation for improving the added value of green prunus mume kernel.

Key words： green plum kernel oil; microwave-assisted low liquid-solid ratio aqueous method; extraction yield; physicochemical property

Cite this article

MAO Qi , QIN Xiaoli , HU Xiao , LIU Xiong , ZHONG Jinfeng . Extraction of green plum kernel oil by microwave-assisted low liquid-solid ratio aqueous method[J]. Food and Fermentation Industries, 2024 , 50(10) : 230 -236 . DOI: 10.13995/j.cnki.11-1802/ts.035730

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