Academic article

Fluorescence of muscle and connective tissue from cod and salmon

Andersen, Charlotte Møller; Wold, Jens Petter

Publication details

Journal: Journal of Agricultural and Food Chemistry, vol. 51, p. 470–476, 2003

Publisher: American Chemical Society (ACS)

Issue: 2

International Standard Numbers:
Printed: 0021-8561
Electronic: 1520-5118

Open Access: none


Autofluorescence of salmon and cod muscle was measured and compared with autofluorescence of collagen type I and type V. Similarities between fluorescence of fish muscle and collagen were found in that the same peaks were obtained around 390, 430, and 480 nm, These similarities are supported by principal component analyses. Texture and gaping score were predicted from the fluorescence spectra by partial least-squares regression. However, the predictions did not perform well. Relating fluorescence to the gaping score gave a prediction error of 0.91 and a correlation of 0.43 when measuring gaping on a scale from 0 to 5. There was no relation between texture and fluorescence spectra. Fluorescence of fish muscle could be related to the storage time. However, this relation seemed not to be induced by changes in collagen.