摘要： 本试验旨在调查研究我国不同产地的棉粕和棉籽蛋白的营养成分和棉酚含量。采集全国不同主产区的5个棉粕样品和5个棉籽蛋白样品测定其常规营养成分和棉酚含量。结果表明,棉粕的粗蛋白、粗脂肪、酸性洗涤纤维营养成分含量分别为39.28%,0.28%,21.60%,棉籽蛋白的粗蛋白、粗脂肪、酸性洗涤纤维营养成分含量分别为51.96%,0.75%,13.29%,其中,在棉粕和棉籽蛋白所有营养成分中粗脂肪和钙两项变异系数最大,粗蛋白变异系数最小。棉粕和棉籽蛋白的游离棉酚含量分别为1021.14mg/kg和687.75mg/kg。不同主产区棉粕和棉籽蛋白的粗蛋白含量稳定,而粗脂肪和钙含量差异较大;棉粕游离棉酚含量较高。

关键词: 棉粕, 棉籽蛋白, 营养成分, 棉酚

Abstract: This experiment was designed to study the nutritional composition and gossypol content of cottonseed meal(CSM) and cottonseed protein(CSP) produced from different areas in China. 5 of CSM and 5 kinds of CSP were collected from different areas in China,and then their nutrient composition and gossypol content were determined.The result showed that: the percentage of crude protein(CP), ether extract(EE), acid detergent fiber(ADF)in CSM were 39. 28%,0. 28%,21. 60%,respectively. the percentage of CP,EE,ADF in CSP were 51. 96%,0. 75%,13. 29%,respectively. In all the nutritional composition,the content of EE and calcium(Ca) were the two highest,while the content of CP was the lowest. And the free gossypol(FG) content of CSM and CSP were 1021. 14mg /kg and 687. 75 mg /kg,respectively. These results indicated that: the content of CP was stable while the content of EE and Ca had a large variation in the CSM and CSP from different areas; the FG content of CSM was higher.

Key words: Cottonseed meal, Cottonseed protein, Nutritional composition, Gossypol

中图分类号: 

• S562