Fluorescence of Extracts from Argentine Hake (Merluccius hubbsi) Muscle and Its Correlation with Quality Indices During Chilled Storage |
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| Authors: | Susana J Risso Cecilia Crovetto Adelaida Ávila |
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| Institution: | 1. Faculty of Natural Sciences, The National University of the Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina;2. Coastal Development Institute, The National University of the Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina;3. Faculty of Engineering, The National University of the Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina |
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| Abstract: | Argentine hake (Merluccius hubbsi) was stored chilled for 8 days. The evolution of fluorescence of the aqueous and organic extracts of muscle during storage at 4°C was studied and correlated with common damage indices; pH, total volatile basic nitrogen, free fatty acids, and the fluorescence intensity of the aqueous phase showed a good correlation with storage time. The excitation-emission matrices of the aqueous extracts were also obtained. A fluorescence landscape that could be attributed to tryptophan decreased with storage time, meanwhile a peak (around 340 and 400 nm for excitation and emission wavelengths, respectively) is developed during chilled storage. |
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| Keywords: | Argentine hake Atlantic Ocean quality shelf life fluorescence |
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