The lipids was extracted from the internal organs of Ictalurus punctatus by microwave, and its liposoluble chemical constituents was identified and quantified by gas chromatography (GC)/electron impact (EI) mass s...The lipids was extracted from the internal organs of Ictalurus punctatus by microwave, and its liposoluble chemical constituents was identified and quantified by gas chromatography (GC)/electron impact (EI) mass spectrometry (MS). Subsequent-ly, the acid catalysis method was used to convert fatty acids to methyl-esters. The total lipids in the pure fat of I. punctatus were found to be about 99%. Twenty-three fatty acids were identified. The major fatty acids found in the oils were normal mo-nounsaturated, polyunsaturated fatty acids and alkane paraffin. Unsaturated fatty acids comprised 72.84% of the total, and the major components of monounsaturated fatty acids were C18:1 (48.52%), while the polyunsaturated fatty acids were mainly composed of C18:2 (16.54%). Saturated fatty acids comprised approximately 19.21%of the total. The main components were C16:0 (14.46%) and C18:0 (4.17%), most of which were medium-long-chain fatty acids. Therefore, catfish oil can be used as an important dietary source of functional fatty acids. The difference between the pro-portion of unsaturated and saturated fatty acids appears to be significant compared to fish of the Cyprinidae family, as catfish skin and muscle have higher protein content and lower fatty content. This study confirms that catfish has excellent nutri-tional quality.展开更多
在江西峡江和赣州进行了HACCP(Hazard Analysis and Critical Control Point)体系在斑点叉尾(Ictaluruspunctatus)人工繁殖中的应用研究。应用HACCP的基本原理,对整个斑点叉尾人工繁殖过程进行危害分析,确立了亲鱼培育池的选择、亲...在江西峡江和赣州进行了HACCP(Hazard Analysis and Critical Control Point)体系在斑点叉尾(Ictaluruspunctatus)人工繁殖中的应用研究。应用HACCP的基本原理,对整个斑点叉尾人工繁殖过程进行危害分析,确立了亲鱼培育池的选择、亲鱼种质选择、亲鱼产卵池的选择、受精卵孵化、苗种培育、水质监测、饲料供应、日常管理等8个关键控制点,提出了相应的预防措施、关键限值、监控措施以及超过关键限值时的纠正措施,使各关键控制点处于人为控制之下。实现了斑点叉尾人工繁殖按无公害化、规范化、标准化生产。展开更多
基金Supported by a grant from Hunan Provincial Science and Technology Department(2010SK303)a grant from Jishou University(JDSTLY201110)The National Small and Mid-sized Enterprise Technology Innovation Fund(12C26214304972)~~
文摘The lipids was extracted from the internal organs of Ictalurus punctatus by microwave, and its liposoluble chemical constituents was identified and quantified by gas chromatography (GC)/electron impact (EI) mass spectrometry (MS). Subsequent-ly, the acid catalysis method was used to convert fatty acids to methyl-esters. The total lipids in the pure fat of I. punctatus were found to be about 99%. Twenty-three fatty acids were identified. The major fatty acids found in the oils were normal mo-nounsaturated, polyunsaturated fatty acids and alkane paraffin. Unsaturated fatty acids comprised 72.84% of the total, and the major components of monounsaturated fatty acids were C18:1 (48.52%), while the polyunsaturated fatty acids were mainly composed of C18:2 (16.54%). Saturated fatty acids comprised approximately 19.21%of the total. The main components were C16:0 (14.46%) and C18:0 (4.17%), most of which were medium-long-chain fatty acids. Therefore, catfish oil can be used as an important dietary source of functional fatty acids. The difference between the pro-portion of unsaturated and saturated fatty acids appears to be significant compared to fish of the Cyprinidae family, as catfish skin and muscle have higher protein content and lower fatty content. This study confirms that catfish has excellent nutri-tional quality.
文摘在江西峡江和赣州进行了HACCP(Hazard Analysis and Critical Control Point)体系在斑点叉尾(Ictaluruspunctatus)人工繁殖中的应用研究。应用HACCP的基本原理,对整个斑点叉尾人工繁殖过程进行危害分析,确立了亲鱼培育池的选择、亲鱼种质选择、亲鱼产卵池的选择、受精卵孵化、苗种培育、水质监测、饲料供应、日常管理等8个关键控制点,提出了相应的预防措施、关键限值、监控措施以及超过关键限值时的纠正措施,使各关键控制点处于人为控制之下。实现了斑点叉尾人工繁殖按无公害化、规范化、标准化生产。