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Antioxidant, Anti-Nephrolithe Activities and in Vitro Digestibility Studies of Three Different Cyanobacterial Pigment Extracts

1
Salt and Marine Chemicals, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
2
Academy of Scientific & Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Colin Barrow
Mar. Drugs 2015, 13(8), 5384-5401; https://doi.org/10.3390/md13085384
Received: 2 June 2015 / Revised: 13 July 2015 / Accepted: 10 August 2015 / Published: 20 August 2015
(This article belongs to the Special Issue Marine Functional Food)
Phycobiliprotein-containing water and carotenoid-containing methanolic extracts of three different cyanobacteria, Pseudanabaena sp., Spirulina sp. and Lyngbya sp., were studied for their DPPH scavenging, iso-bolographic studies, and anti-nephrolithe activities. The best EC50 values for DPPH scavenging were in Lyngbya water (LW, 18.78 ± 1.57 mg·mg−1 DPPH) and Lyngbya methanol (LM, 59.56 ± 37.38 mg·mg−1 DPPH) extracts. Iso-bolographic analysis revealed most of the combinations of extracts were antagonistic to each other, although LM—Spirulina methanol (SM) 1:1 had the highest synergistic rate of 86.65%. In vitro digestion studies showed that DPPH scavenging activity was considerably decreased in all extracts except for Pseudanabaena methanol (PM) and LM after the simulated digestion. All of the extracts were effective in reducing the calcium oxalate crystal size by nearly 60%–65% compared to negative control, while PM and Spirulina water (SW) extracts could inhibit both nucleation and aggregation of calcium oxalate by nearly 60%–80%. View Full-Text
Keywords: Carotenoids; phycobiliproteins; Antioxidants; iso-bolographic analysis; calcium oxalate crystallization; in vitro digestibility; DPPH Carotenoids; phycobiliproteins; Antioxidants; iso-bolographic analysis; calcium oxalate crystallization; in vitro digestibility; DPPH
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Paliwal, C.; Ghosh, T.; Bhayani, K.; Maurya, R.; Mishra, S. Antioxidant, Anti-Nephrolithe Activities and in Vitro Digestibility Studies of Three Different Cyanobacterial Pigment Extracts. Mar. Drugs 2015, 13, 5384-5401.

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