Fatty acid profile of Spirulina sp cultivated in Bangka Seawater

Abstract

Abstract Microalgae can be used as a good biodiesel raw material because there are quite a lot of oil microalgae, one of which is Spirulina sp. Cultivation Process of Spirulina sp. using seawater media produces more optimal biomass than freshwater media. This study used Bangka Seawater as a growth medium for Spirulina sp., and identification fatty acid of Spirulina extract by GC-MS methode. cell growth of Spirulina sp. on media Bangka seawater using Walne fertilizer can experience an exponential phase until the 9th day due to the addition of Walne fertilizer. Culture with 1 ml of Walne fertilizer had the best growth. The use of Bangka sea water without fertilizer can also grow Spirulina sp with a peak on day 5. The total fatty acid in the hexane extract of Spirulina in this study was 69.60% with similarity indeks above 70%. As many as 33.78% are Saturated Fatty Acids (SFA) such as docosanoic acid, hexadecanoic acid, octadecanoic acid, and hexanedioic acid. While 35.82% are Unsaturated Fatty Acids (UFA). The profile of fatty acid from Bangka seawater media showed that the largest fatty acids contained in Spirulina sp. is palmitic acid (hexadecanoic acid) with presentage 25.21%.