3.3 Fatty acid composition of Qingjinju seed oils
The fatty acid composition of the Qingjinju seed oils is detailed in Table 3. Qingjinju seed oils contained a variety of major fatty acids including oleic (34.08-35.49%), linoleic (29.79-30.79%), palmitic (17.17-17.76%), stearic (8.02-8.94%), linolenic (6.50-6.81%), and palmitoleic (1.24-1.53%) acids. This differs from the report by Manaf el at4, which found that linoleic (31.8%), oleic (29.6%), and palmitic (21.4%) acids were the predominant fatty acids. This is likely due to differences in the production region, as has been observed for grapefruit (C. paradisi )15, 17, mussami (C. sinensis )15, 17, and kinnow (C. reticulata )15, 17.
There were significant differences between several of the fatty acid profiles due to the method used for extraction. For example, oleic and linoleic acid content significantly varied across all three extraction methods, which is in agreement with results reported by Pradhan et al.36 The unsaturated fatty acid content in the oils extracted using the different methods ranged from 73.12 to 73.54%, which was higher than C. sinensis ,C. paradisi , C. aurantium , and C. reticulata11