Effects of Fusarium Wilt Disease Stress on the Quality of Sesame Seed and Oil Product

WEI Qichao; MIAO Hongmei; WANG Xuede; ZHANG Haiyang; YUAN Qingli; LI Hailing

doi:10.15933/j.cnki.1004-3268.2018.12.011

Abstract：In order to research the effects of Fusarium wilt disease(FW) on the quality of sesame seed and oil physical and chemical indicators, this research systematically evaluated the seed appearance quality, nutrient components and the sesame oil quality using three sesame cultivars(4816, P12-0, and P21) seeds with 0—3 grades of FW as materials.Under the wilt disease, the 1 000-grain quality of the three varieties decreased by 1.90％to 38.49％, the L value decreased by 0.35％to 7.02％, and theΔE of the three varieties gradually increased with the increase of disease degree, which were 0.59 to 3.10, 2.24 to 4.29, and 0.52 to 4.14, respectively.The fluctuation ranges of crude fat and crude protein in sesame were-1.28％to 1.61％and 0.54％to 5.08％, respectively.The composition and the content of fatty acids and amino acids varied insignificantly.The ash content of sesame seeds was positively correlated with the disease level.The ash content of the three sesame cultivars of 3-grade FW was increased by 16.04％, 12.05％and 19.21％, respectively.Compared with the control, the acid value of oil crushed from 3-grade FW seeds of three sesame cultivars presented the significant increase.And the acid values of the above oil samples were 5.39 mg/g, 6.80 mg/g, and 3.07 mg/g, respectively, higher than the threshold value(3 mg/g) of the 1-grade sesame oil according to the national standard of GB8223—1987.For the sesame oil crushed with the 3-grade FW seeds, the contents of the main fatty acids, oleic acid and linoleic acid, ranged from-0.68％to 0.80％and 0.68％to 5.87％.In addition, the contents of the main antioxidants in the sesame oil, sesamin, sesame forest and vitamin E, changed irregularly under the 3-grade FW.The results indicate that the wilt disease affects the appearance quality and ash accumulation of sesame seeds, and the effect on acid value is not conducive to the production and storage of high quality sesame oil.