砂海星(Luidia quinaria von Martens)提取残渣营养成分分析

Analysis on Nutritional Components of Extraction Residue from Luidia quinaria von Martens

[目的]对砂海星(Luidia quinaria von Martens)提取残渣进行营养成分分析,为砂海星资源的综合开发利用提供理论依据。[方法]水分、灰分、粗脂肪、蛋白质含量的测定参照国家标准中规定的方法进行;还原糖、总糖、多糖的测定采用3,5-二硝基水杨酸比色法;氨基酸的测定采用高效液相色谱法,色氨酸的测定参照国家标准中规定的方法进行;脂肪酸的测定采用气—质联用法;化学元素Ca、Mg、Fe、Pb、Mn、Zn、Cu、Ni、Co、Cr的测定采用原子吸收光谱法,Hg的测定采用原子荧光光谱法。[结果]砂海星提取残渣中水分含量为1.75%,灰分含量为81.40%,粗脂肪含量为0.67%,蛋白质含量为11.99%,还原糖含量为0.20%,总糖含量为2.16%,多糖含量为1.96%,总氨基酸含量为13.69%,脂肪酸中不饱和脂肪酸含量较少,化学元素中Ca、Mg、Fe含量较高。[结论]砂海星提取残渣营养成分含量丰富,具有较高的开发利用价值。

[Objective] To analyze the nutritional components of extraction residue from Luidia quinaria yon Martens, so as to provide a theoretical basis for the comprehensive development and utilization the Luidia quinaria yon Martens resources. [Method] The content of water, ash, crude fat and protein were determined by the national standard methods. The content of reducing sugar, total sugar and polysaccharide were determined by 3,5- two nitro salicylic acid method. The content of amino acids was determined by HPLC method and the content of tryptophan was determined by the national standard method. The content of fatty acids was determined by GC-MC method. The content of chemical element Ca, Mg, Fe, Pb, Mn, Zn, Cu, Ni, Co and Cr were determined by atomic absorption spectrometry method and the content of Hg was determined by atomic fluorescence spectrometry method. [Results] The content of water, ash, crude fat, protein, reducing sugar, total sugar, polysaccharide and total amino acids were 1.75%, 81.40%, 0.67%, 11.99%, 0.20%, 2.16%, 1.96%and 13.69%, respectively. There was a small proportion of unsaturated fatty acid in fatty acids. The higher content of inorganic elements Ca, Mg and Fe were found. [Conclusion] It is indicated that the extraction residue from Luidia quinaria von Martens is worthy of being developed and utilized.