为降低3-氯-1,2-丙二醇(3-MCPD)含量,本文对影响水解脱脂豆粕中3-氯-1,2-丙二醇(3-MCPD)含量的温度和酸浓度等因素进行了研究,得到盐酸水解大豆蛋白的最佳条件为:盐酸的浓度为4mol/L,水解温度为110℃,水解时间为3h,该条件下的大豆蛋白水解液氯丙醇含量为1.2mg/kg.水解液用活性炭吸附降低氯丙醇含量,最佳条件为:活性炭的添加量为1%,吸附温度为70℃,吸附时间为1h,
文本选择白酒酿造原料(高粱、大米、小麦、豌豆和玉米)模拟白酒发酵过程,研究不同原料来源的糖组分和发酵后得到乙醇之间碳同位素之间关系.研究表明,原料发酵前后糖组分和发酵后乙醇δ13C存在极好的线性关系,δ13C乙醇=1.05×δ13C糖+0.263(R2=0.9998)(见图1),其中高粱酒精δ13C=-11.23‰,大米酒精δ13C=-28.62‰,小麦酒精δ13C=-27.19‰,豌豆酒精δ13
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