不同配比菜粕发酵的抗营养因子脱除效果比较

设置8个不同处理的菜粕固态发酵过程,经过72 h发酵,比较不同处理发酵产物的硫苷、异硫氰酸酯和噁唑烷硫酮等3种主要抗营养因子的含量,从而筛选一个最低抗营养因子含量和最高营养提升率的处理.结果表明,处理七(菜粕20 kg、菠萝汁7.5 kg、活化剂0.01 kg、菌种0.10 kg、水2.25 kg)的总脱除效果最好,硫苷、异硫氰酸酯和噁唑烷硫酮的脱除率分别为97.79％、100％和100％,而主要营养成分粗蛋白和小肽的含量相应提升了3.71％和195.16％.

Removal effects of anti-nutritional factors in different proportions of fermented rapeseed meal

Eight different solid state fermentation processes of rapeseed meal were established. After fermentation for 72 h, a process with minimum content of antinutritional factors and maximum nutritional improvement rate was selected by comparing the contents of three major anti-nutritional factors (glucosinolate, isothiocyanate and oxazolidine thione) in different processed fermentation products. Results showed that there was an optimal overall removal effect in process 7 (rapeseed meal 20 kg, pineapple juice 7.5 kg, activator 0.01 kg, strains 0.10 kg, water 2.25 kg), in which removal rates of glucosinolate, isothiocyanate and oxazolidine thione were 97.79%, 100% and 100%, respectively. Meanwhile, essential nutrient content like crude protein and small peptides increased by 3.71% and 195.16% accordingly.