Antidiabetic and anti-inflammatory potential of sulphated polygalactans from red seaweeds Kappaphycus alvarezii and Gracilaria opuntia

Makkar, Fasina and Chakraborty, Kajal (2017) Antidiabetic and anti-inflammatory potential of sulphated polygalactans from red seaweeds Kappaphycus alvarezii and Gracilaria opuntia. International Journal of Food Properties, 20 (6). pp. 1326-1337.

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    Abstract

    Antidiabetic and anti-inflammatory potential of sulphated polygalactans isolated from the red seaweeds Kappaphycus alvarezii and Gracilaria opuntia were acquired by employing different in vitro systems. The sulphated galactopyran motif derived from G. opuntia possessed significant antidiabetic properties as identified by α-amylase (IC50 0.04 mg/mL), α-glucosidase (IC50 0.09 mg/mL) and dipeptidyl peptidase-4 (DPP-4, IC50 0.09 mg/mL) inhibitory activities. Based on the detailed nuclear magnetic resonance spectroscopy experiments the sulphated galactopyran motif of G. opuntia was designated as →3)-4-O-sulfonato-(6-O-acetyl)-β-D-galactopyranosyl- (1→4)-3,6-anhydro-(2-O-sulfonato)-α-D-galactopyranosyl-(1→3)-4-O-sulfonato-( 6-O-acetyl)-β-D-xylosyl-(1→3)-4-O-sulfonato-(6-O-acetyl)-β-D-galactopyranosyl-( 1→4)-3,6-anhydro-(2-O-sulfonato)-α-D-galactopyranan, while the one from K. alvarezii was demonstrated to be →4)-4-O-sulfonato-(2-Omethyl)- β-D-galactopyranosyl-(1→4)-3,6-anhydro-(2-O-methyl)-α-D-galactopyranan. The sulphated galactans from G. opuntia showed greater antiinflammatory inhibitory activities as determined by cyclooxygenase-1 (COX-1, IC50 0.01 mg/mL), cyclooxygenase-2 (COX-2, IC50 0.03 mg/mL), and 5-lipoxygenase inhibitory activities (5-LOX, IC50 0.24 mg/mL). This study revealed that the sulfated polygalactan enriched concentrate from G. opuntia can be used as potential therapeutic candidate to suppress the hyperglycemic response in diabetic conditions and inflammatory activity. They can be used to develop functional food ingredient in nutraceutical products.

    Item Type: Article
    Uncontrolled Keywords: Kappaphycus alvarezii, Gracilaria opuntia, Anti-inflammatory, Cyclooxygenase, Lipoxygenase, Antidiabetic, Dipeptidyl peptidase
    Subjects: Fish Biotechnology > Bioactive compound
    Biochemistry
    Algae > Seaweed
    Divisions: CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI > CMFRI-Kochi > Marine Biotechnology
    CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI-Kochi > Marine Biotechnology
    Depositing User: Arun Surendran
    Date Deposited: 28 Oct 2010 09:47
    Last Modified: 17 Apr 2017 05:51
    URI: http://eprints.cmfri.org.in/id/eprint/5782

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