Isolation, characterization, and biomedical potential of phycoerythrin phycobiliprotein from Kappaphycus alvarezii (Doty) L. M. Liao: antimicrobial, antioxidant, and anticancer activities.

ABSTRACT: Kappaphycus alvarezii (Doty) L. M. Liao, a red seaweed widely cultivated for carrageenan polysaccharide, is also a potential source of the valuable pigment phycoerythrin (PE). Therefore, this study aims to extract phycoerythrin from K. alvarezii, evaluate its antimicrobial, antioxidant, and anticancer activities, and identify its biomedical potential for future therapeutic applications. The protein content of phycoerythrin pigment extracted from K. alvarezii was found to be 69.84% and showed excellent antimicrobial activity against Klebsiella oxytoca and Proteus mirabilis, with a minimum inhibition zone of 11 mm. It showed significant in vitro antioxidant activity, as analyzed using total antioxidant, hydrogen peroxide scavenging, reducing power, DPPH, and ABTS assays. Further, the pigment

SUBMITTER: Balasundaram H 

PROVIDER: S-EPMC12314021 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature