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Updated: Feb 16, 2026

A Method for Extracting Pigments from Squid Doryteuthis pealeii
Published on: November 9, 2016
Extraction and partial characterisation of antioxidant pigment produced by Chryseobacterium sp. kr6
Maria Elisa Pailliè Jiménez1, Cristian Mauricio Barreto Pinilla1, Eliseu Rodrigues1
1a Laboratório de Bioquímica e Microbiologia Aplicada , Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil.
Abstract:
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.
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