title: Rapid quantification of muscle fat content and subcutaneous adipose tissue in fish using MRI.
abstract: The potentiality of MRI to quantify fat content in flesh and subcutaneous fat in fish cutlets was investigated. Low measurement time was aimed at in a view to handling large number of samples needed in selective breeding programs for example. Results on fresh and frozen-thawed cutlets were compared to assess this way of conservation. As MRI generates unwanted spatial variations of the signal, a correction method was developed enabling the measurement on several cutlets simultaneously in less than 3 min per sample. For subcutaneous fat, the results were compared with vision measurements. High correlations between both techniques were found (R(2)=0.77 and 0.87 for the ventral and dorsal part). Fat in flesh was validated vs NMR measurements. No statistical difference was found between fresh and frozen-thawed cutlets. RMSE was respectively 0.8% and 0.89%. These results confirmed the potentiality of MRI for fat measurement in fish particularly for a large number of samples.
authors: Irstea, UR TERE, 17 avenue de cucillé, CS 64427, 35044 Rennes, France. guylaine.collewet@irstea.fr
authors: Guylaine
authors: G
authors: Collewet
authors: Jérôme
authors: J
authors: Bugeon
authors: Jérôme
authors: J
authors: Idier
authors: Stéphane
authors: S
authors: Quellec
authors: Benjamin
authors: B
authors: Quittet
authors: Mireille
authors: M
authors: Cambert
authors: Pierrick
authors: P
authors: Haffray
mesh_terms: D000818:Animals; D005223:Fats / Q000032:analysis*; D005399:Fishes; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008460:Meat / Q000032:analysis*; D009132:Muscles / Q000737:chemistry*; D050151:Subcutaneous Fat / Q000737:chemistry*
chemical_list: D005223:Fats