Abstract
［Objective］ To obtain high -quality peony seed oil.［Methods］ Using peony seeds as materials,this study investigated the effects of moisture content,microwave power,microwave time,and kernel -shell mass ratio on peony seed oil yield.Response surface methodology was then used to optimize the process conditions for peony seed oil preparation via microwave pretreatment -pressing methods.The quality of peony seed oil obtained by microwave pretreatment -pressing methods was compared with that extracted by supercritical CO2 extraction and solvent extraction.［Results］ The optimal process conditions for microwave pretreatment -pressing methods to prepare peony seed oil were listed below:moisture content of 8.6%,microwave power of 1 000 W,microwave time of 5 min,and kernel -shell mass ratio of 15∶1.Under these conditions,the oil yield from peony seeds was (26.74±0.58)%.Although there were differences in the physicochemical indicators of peony seed oil produced by the three methods,all met the standards for edible vegetable oil.The extraction methods were non -selective for fatty acid extraction,with no isomerization or oxidation of fatty acids.However,the peony seed oil prepared by microwave pretreatment -pressing methods contained higher levels of trace components such as squalene,tocopherols,and total phenols,which gave it better antioxidant activity.［Conclusion］ Microwave pretreatment -pressing methods are effective processing methods for obtaining high -quality peony seed oil.
Publication Date
4-3-2025
First Page
181
Last Page
188
DOI
10.13652/j.spjx.1003.5788.2024.80666
Recommended Citation
Jindan, HUA
(2025)
"Optimization of microwave pretreatment-pressing methods for preparing peony seed oil and its quality analysis,"
Food and Machinery: Vol. 41:
Iss.
2, Article 23.
DOI: 10.13652/j.spjx.1003.5788.2024.80666
Available at:
https://www.ifoodmm.cn/journal/vol41/iss2/23
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