福建红树林区4种海藻的营养成分

Nutrient composition of four algae in Fujian mangrove areas

主要对福建红树林区 4种海藻 (扁浒苔Enteromorphacompressa ,混合卷枝藻Bostrychiamixta ,鹧鸪菜Caloglossaleprieurii,节附链藻Catenellaimpudica)的营养元素和氨基酸含量等进行研究 .结果表明 :( 1 )福建红树林区 4种海藻Fe ,Mn含量显著高于一般海藻的平均浓度 ;Ca含量则普遍低于一般海藻的平均浓度 ;P ,K ,Mg含量则高于或低于一般海藻的平均浓度 ;( 2 )福建红树林区 4种海藻总氨基酸含量(TAA)由高到低依次为 (干重 ) :扁浒苔 2 6 5 89mg/g ,混合卷枝藻 2 1 1 96mg/g ,鹧鸪菜 1 89 53mg/g ,节附链藻 1 1 1 1 0mg/g ;而必需氨基酸含量 (EAA)由高到低依次为 :混合卷枝藻 87 4 2mg/g ,扁浒苔 82 92mg/g ,鹧鸪菜 73 6 2mg/g ,节附链藻34 4 1mg/g ;( 3)在 3和 6月 ,对生长在秋茄板状根上和岩石面上的鹧鸪菜营养成分比较 ,前者的总氨基酸和必需氨基酸含量均大于后者 ;

The analysis of nutrient compositions for Bostrychia mixta, Catenella impudica, Caloglossa leprieurii and Enteromorpha compressa that grow in Fujian mangrove areas shows that concentration of Fe or Mn in these four algae is much higher than the mean concentration of Fe or Mn in common algae; concentration of Ca is lower than mean concentration of Ca in common algae; concentration of P, K, Mg is higher or lower than mean concentration of P, K, Mg in common algae. The range of concentration of total amino acids(TAA)among 4 algae is Enteromorpha compressa (DW)265 89 mg/g> Bostrychia mixta 211 96 mg/g> Caloglossa leprieurii 189 53 mg/g> Catenella impudica 111 10 mg/g; the range of concentration of essential amino acids(EAA)is Bostrychia mixta 87 42mg/g > Enteromorpha compressa 82 92 mg/g> Caloglossa leprieurii 73 62 mg/g> Catenella impudica 34 41 mg/g. The TAA or EAA concentration in Caloglossa leprieurii growing on the buttress like root surface of Kandelia candel is higher than that on rocky surface near the Kandelia candel forest in March and June, respectively. Concentrations of chemical elements in Caloglossa leprieurii growing in the different habitats change with March and June.