A quantitative analysis of conventional fatty acids (c10:0, c12:0, c14:0, c15:0, c16:0, c17:0, c18:0, c20:0, c22:0,c23:0, c24:0, c14:1w5,c15:1,c16:1w7,c16:1w9,c18:1w9, c18:1w7, c20:1w9, c22:1w9, c24:1w9, c18:2w6, c18:3w6, c18:3w3,c18:3w4,c20:2w6, c20:3w3, c20:3w6, c20:4w6, c20:5w3, c22:2w6, c22:3w6, c22:5w3, c22:6w3, c22:4w6) with internal calibration (internal standard c19) was done.