Availability of marine collagen from Newfoundland fisheries and aquaculture waste resources
2019
Dave, Deepika | Liu, Yi | Clark, Lesley | Dave, Nisarg | Trenholm, Sheila | Westcott, Jillian
Atlantic salmon and Atlantic cod are two main finfish species harvested from Newfoundland aquaculture and wild capture fisheries, respectively. During processing, a large amount of by-products containing many valuable components are disposed of or used for low value. Lumpfish, a cleaner fish, is also not utilized at the end of the season. The proximate composition and available collagen content were investigated for Atlantic salmon and wild cod by-products and lumpfish. The highest moisture content was found in whole lumpfish (91.08%). The ash level (dry basis) was highest in fins of cod (38.14%), followed by salmon (32.19%) and lumpfish (19.06%). Salmon frames showed higher lipid content (44.81% on dry basis). The protein content (dry basis) was highest in skin of cod (96.72%), followed by salmon (71.51%) and lumpfish (77.32%). The highest collagen content was found in salmon scales and skin (51.11% and 27.45% of dry matter, respectively).
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