Antioxidant Activity of Iota-Carrageenan
DOI:
https://doi.org/10.22487/me.v19i2.1487Keywords:
Iota-Carrageenan, Degradation, Antioxidant, DPPH, FTIR, GC-MSAbstract
Iota-carrageenan has potential as an antioxidant. This study aims to determine the antioxidant activity of pure i-carrageenan and degraded i-carrageenan. The method used for antioxidant activity is DPPH. The antioxidant activity test of the samples was carried out with various concentrations of 200 ppm, 400 ppm 600 ppm and 800 ppm. The results obtained showed the highest antioxidant activity of the sample at a concentration variation of 800 ppm, namely pure i-carrageenan (50.71%), i-carrageenan BM>3500 Da (45.21%) and i-carrageenan BM<3500 Da (55.89 %). Identification of functional groups using FTIR. The results of the FTIR analysis showed the presence of groups of O-H, C-O, C-H, C-N, C=C and an aromatic ring. Identification of active compounds using GC-MS. The results of the GC-MS analysis showed the presence of compounds that have the potential as antioxidants such as Heptadecane, Methyl tetradecanoate, Hexadecanoic acid, methyl ester; 1,2- Benzenedicarboxylic acid, bis(2-methylpropyl) ester; Diethyl phthalate.
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