| Pomelo seed from Meizhou, Guangdong was used as raw material, pomelo seed oil was extracted with organic solvent. The fatty acid composition, acid value, peroxide value of the pomelo seed oil were determined. The volatile components of the oil were also detected by headspace-solid phase microextraction-gas chromatography-mass spectrometry. In addition, the contents of polysaccharides, polypeptides, flavones and polyphenols in the pomelo seed meal were determined. The results showed that the yield of pomelo seed oil was (55.74±1.25)%, and the oil contained 68.43% unsaturated fatty acid, mainly comprising (40.45±0.05)% linoleic acid and (23.08 ± 0.03)% oleic acid. The tocopherol and squalene contents in pomelo seed oil were (56.04±0.36)μg/g and (4.22±0.22)μg/g, respectively. The acid value and peroxide value were (0.86±0.16)mgKOH/g and (0.63±0.14)mmol/kg, respectively, which accorded with the limitation of the national standard. There were 57 volatile compounds identified in the pomelo seed oil, including hydrocarbons, alcohols, acids, esters, aldehydes, ketones, phenols and nitrogen compounds, which made the pomelo seed oil possessed special pomelo-like smell. The contents of polypeptides and polysaccharides in the pomelo seed meal were 350% and 3.90%, respectively. The pomelo seed meal contained trace flavones and polyphenols. |
