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Abstract

Laurencia caspica, a marine macroalga species were analyzed to determine its proximate chemical composition. The investigated species demonstrated high carbohydrate (25.5±0.20 % dry wt.) protein (22.22±0.4 % dry wt.), Ash (26.82±0.31 % dry wt.) and moisture components (12.00±0.23 % dry wt.) and low lipid content (0.03±0.05 % dry wt.). Glutamic acid (192.24±1.4 mg 100g-1 dry wt.) and Aspartic acid (160.77±1.1 mg 100g-1 dry wt.) were the most abundant free amino acids, while Histidine (21.15±0.1 mg 100g-1 dry wt.) and Glycine (29.99±0.3 mg 100g-1 dry wt.) contents were the lowest in the free amino-acid profiles. All essential amino acids were detected in the species tested. Unsaturated fatty acid constituted about 64% of total fatty acids, mainly 8-Octadecenoic acid and saturated fatty acids represented 36% of the total fatty acids (mainly myristic acid). This study was conducted to create a nutritional data for Laurencia caspica in order to popularize its consumption and utilization in the southern coasts of the Caspian Sea.

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