海洋链带藻营养成分分析

Nutrient Analysis of Desmodesmus sp. WC08

测定链带藻Desmodesmus sp. WC08营养成分,为其综合利用提供依据。结果显示, Desmodesmus sp. WC08含有丰富的营养物质,粗蛋白、总糖、油脂、灰分、粗纤维和色素分别占藻粉干重的20.75%, 17.13%, 30.86%,11.47%, 14.68%和4.71%。脂肪酸分析显示Desmodesmus sp. WC08中含有多种不饱和脂肪酸,其含量占总脂肪酸的72.23%;氨基酸总含量为28.07%,其中必需氨基酸为10.99%,通过必需氨基酸指数评价,表明Desmodesmus sp. WC08是一种优质的蛋白来源;维生素含量丰富,尤其是维生素C,含量为31.67 mg/100 g, B族维生素含量最高的是维生素B6,为6.21 mg/100 g;藻粉含有多种矿物质元素,其中钾、钠、钙、铁和镁5种元素含量较高,重金属铅、汞、砷和镉含量均未超标。

Determination of Desmodesmus sp. WC08 nutrients, the results showed that Desmodesmus sp. WC08 contains many kinds of nutrients, and crude protein, carbohydrates, fat, ash, crude fiber and pigments were accounted for 20.75%, 17.13%, 30.86%, 11.47%, 14.68% and 4.71% by algae powder dry weight, respectively. Fatty acid analysis shows that algae powder contains a variety of unsaturated fatty acids which account for 72.23% in total fatty acids. Content of amino acid in Desmodesmus sp. WC08 was 28.07%, of which the essential amino acids were 10.99%. Through essential amino acid index evaluation, it was indicated that Desmodesmus sp. WC08 was an excellent source of protein; Desmodesmus sp. WC08 was rich in vitamins, especially vitamin C had 31.67 mg/100 g, and vitamin B6 with a content of 6.21 mg/100 g was higher than other B vitamins. Algae powder contains a variety of trace mineral elements, potassium, sodium, calcium, iron and magnesium were higher, and the heavy metal of lead, mercury, arsenic and cadmium was lower than the national standard.