Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Extraction and partial characterisation of antioxidant pigment produced by Chryseobacterium sp. kr6

2018; Taylor & Francis; Volume: 33; Issue: 11 Linguagem: Inglês

10.1080/14786419.2017.1423304

1478-6427

Maria Elisa Pailliè Jiménez, Cristian Mauricio Barreto Pinilla, Eliseu Rodrigues, Adriano Brandelli,

Algal biology and biofuel production

Pigments synthesised by Chryseobacterium sp. kr6 growing on feather waste were extracted and characterised. The pigment extract was characterised by KOH test, UV-vis, CIELAB colour system, HPLC-DAD-MS, FTIR and its antioxidant capacity was evaluated. A positive bathochromic shift was observed when kr6 colonies or pigment extracts were subjected to alkaline solution (20% KOH) and a λmax at 450 nm was detected for acetone extracts, although no typical fine structure of carotenoids was detected in the electomagnetic spectra. The HPLC profile of the extracted pigment showed that the compound has three different peaks with λmax near 450 nm. The FTIR analysis shows some principal functional groups from a flexirubin-like molecule. The pigmented compound also presents antioxidant activity evaluated by the scavenging of the ABTS radical.