低含量3-氯-1,2-丙二醇的水解植物蛋白生产工艺优化

研究了在低酸、低温条件下植物蛋白的优化水解工艺,旨在降低水解蛋白中的氯丙醇类物质。研究确定,在95℃左右,固液比1∶5,盐酸浓度4mol/L,水解18h,所得水解蛋白中3-氯-1,2-丙二醇含量为1.25mg/kg,仅是常规酸法的5%。进一步进行碱中和与减压浓缩处理,可使3-氯-丙二醇残留大幅降低。

This paper focuses on the acid hydrolysis process of vegetable proteins under the condition of low concentration of acid and low temperature for the purpose of reducing the 3-MCPD.The hydrolysates (HVP) with low content of 3-monochloropropanediol can be prepared by optimizing the influencing factors. To hydrolyze for 18 hours under the conditions of 98℃ and 1:5 of solid to liquid ratio, the level of the 3-MCPD can be controlled at 1.25 mg/kg,which is only 5% of that by traditional technology. As a result of post-treatment ,there was a remarkable decrease in the 3-MCPD residue in the HVP.