Jellyfish Rhizostoma pulmo collected off Goa Coast (India) as a rich source of tryptophan containing collagen and its enhanced antioxidant potential

Abstract

The extraction of Rhizostoma pulmo discarded off the Goa coast, India resulted in obtaining remarkably higher yield of 47% (based on lyophilized weight) type I collagen. The amino acid composition showed presence of glycine, hydroxyproline and proline and other amino acids in consistent with mammalian collagens. Interestingly, it also possessed essential amino acid tryptophan that makes this collagen superior than other commercially available collagen products. The dose and time response anti-oxidant activity (DPPH assay) of jellyfish collagen showed increase in the percentage activity with its efficiency better than marine fish collagen. In the dose response, IC₅₀ was found to be 11.0 mg/ml. The percentage DPPH activity gradually increased from 47.58 to 81.11% with time 1-8 h, respectively at concentration of 7 mg/ml of jellyfish collagen. It was noteworthy to observe that the anti-oxidant activity remained 80% even after 24 h of analysis. The EDX analysis showed presence of minerals like Cl, Na, Mg, K, Cu, Fe, Zn etc. essential for healthy bones. The mass assisted laser desorption ionization-time of flight mass spectrometric (MALDI-TOF MS) data showed several precursor peaks of different peptides which has been presented here for the first time. The finding showed higher production of tryptophan containing anti-oxidant collagen that will certainly enhance its benefit in neurotransmission and cognitive function.

Keywords: Amino acids; Anti-oxidant; Collagen; Jellyfish; Rhizostoma pulmo; Tryptophan.

Fig. 1

SDS page of a Jellyfish collagen (JFC); b Marine collagen (MC)

Fig. 2

EDX data of jellyfish collagen (JFC)

Fig. 3

DPPH radical scavenging assays of jellyfish collagen (JFC) and Marine fish collagen (MC); a Dose response, b Time response (P < 0.05)

Fig. 4

MALDI-TOF mass spectra of a Jellyfish collagen (JFC) and b Marine collagen (MC)