摘要
对 4种南极冰藻 (2种单细胞绿藻—— Pyramimonas sp.和绿藻 L 4 ,以及 2种硅藻——硅藻 H1和 H2 )的蛋白质、脂肪、糖、无机元素含量和组成 ,灰分含量 ,以及氨基酸和脂肪酸的组成等的基本生化组成进行测定。结果表明 ,4种冰藻的蛋白质含量均高于常温藻 ,蛋白质含量以绿藻 L4的含量最高 ,为 4 5 .18% ;Pyramimonas sp.的蛋白质含量最低为 2 7.70 %。4种冰藻的脂肪含量均高于常温藻 ,为 14 .0 2 %～ 19.89% ;总糖含量为 4 .7%～ 16 .3% ,与常温藻含量接近。Mg的含量在冰藻和常温藻的无机元素中都为最高 ,为 136 0 0～ 12 4 0 0 0 mg/ kg,但 4种冰藻的含量均低于 2种常温藻 ;4种冰藻的灰分含量均低于常温藻 ,表明冰藻含有更高的有机成分。冰藻的氨基酸含量与常温藻的含量没有明显不同 ,但绿藻 L 4含有较高含量的羟脯氨酸 ,占总氨基酸含量的 2 .4 8%。 4种冰藻的脂肪酸组成 ,主要以多不饱和脂肪酸为主。冰藻的基本生化组成在一定程度上反映了冰藻对生存环境的适应性 。
The basic biochemical compositions(protein,lipid,suga r,ash,pigment,inorganic elements,amino acid and fatty acid) of 4 species of ice -microalgae(green alga Pyamimonas sp. and L4,diatoms H1 and H2) were deter mined. It is shown from the determination results that the protein contents of 4 species of ice-microalgae were all higher than those of temperate microalgae w ith the highest one of green microalgae L4 being 45.18% and the lowest one of Pyramimonas sp. being 27.70%. The lipid contents of 4 species of ice-microalg ae were also higher than those of temperate microalage, being in the range 14.02 % to 19.89% ; and the total sugar contents of ice-microalgae were close to t hose of temperate microalgae,being in the range 4.7% to 16.3%. The contents of M g were the highest ones of all detected inorganic elements of ice and temperate alga, being in the range 13,600 to 124,000mg/kg, and the Mg contents of 4 specie s of ice-microalgae were lower than those of 2 species of temperate algae; the ash contents of 4 species of ice-microalgae were all lower than those of temper ate algae, which indicates that the ice-microalgae contains higher organic comp onets. There were no sigmificant differences between the amino acid contents of ice-microalgae and temperate algae, but the green algae L4 contained higher hyd roxyproline content, accounting for 2.48% of total amino acid content. Polyunsat urated fatty acid was the dominant fatty acid of ice-microalgae. The basic bioc hemical compositions of ice-microalgae reflect the acclimation of ice-microalg ae to the living environment to a certain extent and meet the nutrient requireme nts as the mariculture food.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2002年第4期43-50,共8页
Advances in Marine Science
基金
国家自然科学基金资助项目--南极冰藻中抗紫外辐射活性物质研究 (4 0 2 0 60 2 2 )
