Vitamin analysis was done for the seaweeds G. acerosa and S.wightii. The fat soluble vitamins analyzed were vitamin A and E using the standards beta carotene and alpha tocopherol respectively. The seaweed samples after processing were subjected to
HPLC analysis using n-hexane and orthophosphoric acid: methanol in the ratio 95:5 and 0.1 M potassium acetate (pH 4.9) as mobile phase for vitamin A and E. The liquid chromatograph was equipped with a 254-nm detector and an 8-mm × 10-cm column. The flow rate was about 2ml/min. Retinyl acetate and retinyl palmitate (7.5