| The composition of Zanthoxylum bungeanum seeds from different areas or different varieties, and Zanthoxylum bungeanum seed oils extracted by pressing and solvent extraction were determined. The refining effects and the quality of refined Zanthoxylum bungeanum seed oils were studied. The results showed that the crude fat contents, crude protein contents and crude fiber contents of four kinds of Zanthoxylum bungeanum seeds were in the range of 11.95%-25.41%, 7.89%-11.03% and 23.71%-31.27%, respectively. Acid values and peroxide values of five kinds of Zanthoxylum bungeanum seed oils were 14.24 - 66.51 mgKOH/g and 9.01-31.47 mmol/kg, respectively. The qualities of crude oils extracted by pressing and solvent extraction were similar, however, the qualities of crude oils obtained from different areas or different varieties were quite different. The color of all the Zanthoxylum bungeanum seed oils were dark. The acid values and peroxide values of Zanthoxylum bungeanum seed oils met the requirement of GB/T 22479—2008 after alkali refining, adsorption bleaching and deodorization. However, the content of trans fatty acids was quite high. The content of unsaturated fatty acids of the Zanthoxylum bungeanum seed oil was more than 70%, in which the content of linolenic acid was about 20%, the content of palmitic acid was higher than the limit of national standard and the contents of other fatty acids were in the range of the national standard. |
