| In order to provide reference for the formulation of relevant standards and product development of vegetable oil deodorizer distillate (DD oil), DD oil from 35 different factories around the world was collected and its physicochemical properties, unsaponifiable matter and hazard factors were analyzed. The results showed that the acid value of DD oil samples was 68.1-191.3 mgKOH/g, the peroxide value was 0.043-0.149 g/100 g, the moisture and volatile matter content was 0.18%-1.98%, the ash content was less than 0.3 g/100 g, the saponification value was 125.0-205.8 mgKOH/g, and the unsaponifible matter content was 2.80%-35.71%. The contents of phytosterol and squalene, vitamin E and squalene were 0.81%-18.23%, 0.13%-9.23% and 0.09%-2.56%, respectively. In addition, the total content of PAH4 in DD oil samples was 6.74-61.98 μg/kg, and the total content of six phthalates (DEP, DMP, DIBP, DBP, BBP, DEHP) was 1.12-17.57 mg/kg. The physicochemical properties, vitamin E and phytosterol contents of different DD oil are quite different, and the pollution level of polycycilic aromatic hydrocarbons and plasticizers in the samples is high. Therefore, necessary attention should be paid to the formulation of DD oil related standards and product development. |
