棉籽油生产过程中棉酚的影响与对策

介绍了棉籽中棉酚的存在与性质,以及棉酚在棉籽油生产过程中可能发生的变化及影响。在毛油制取过程中采用润湿蒸炒,加稀碱液蒸炒,湿式膨化等预处理工序都可有效降低毛油中棉酚含量并提高粕的品质。碱炼是公认的脱除棉酚最有效的方法,但炼耗较高。在脱除棉酚和磷脂后棉籽油也可以进行物理精炼,并可获得良好的工艺效果。提出了在棉籽油中加入适量的邻氨基苯甲酸,再结合其他工序脱除棉酚的方法。

Adverse effect of gossypol in cottonseed oil processing and its countermeasure

The structure and property of gossypol were introduced.The changes of gossypol in the process of cottonseed oil production,and its influence on the quality of the oil were also described.Some methods could be used to reduce the gossypol content in cottonseed oil and improve the quality of the final meal,such as wet moisturizing cooking,diluted caustic cooking and wet expanding and so on.Alkali refining was well known as the most effective method to remove the gossypol in cottonseed oil,but the oil loss was higher.After the gossypol and phospholipid were removed,cottonseed oil could also be refined with physical refining.The method of adding some 2amino benzoic acid into cottonseed oil and combined with other processes to remove the gossypol was the fine way in the practical processing.