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    Quality assessment of weathervane scallop (Patinopecten caurinus) and purple-hinge rock scallop (Crassadoma gigantea) from Alaska

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    Brenner_K_2011.pdf
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    Author
    Brenner, Kathryn A.
    Chair
    Oliveira, Alexandra
    Committee
    RaLonde, Ray
    Crapo, Charles
    Bechtel, Peter
    Keyword
    Weathervane scallop fisheries
    Alaska
    Weathervane scallop
    Quality
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/11330
    Abstract
    In Alaska, the Pacific weathervane scallop (Patinopecten caurinus) is the only species commercially harvested. In the Eastern Gulf of Alaska, harvesters report occurrences of poor quality and difficult to market scallops from some fishing areas, designating the product 'weak meat' scallops. The purple-hinge rock scallop (PHRS, Crassadoma gigantea), has aquaculture potential. A recent grow-out study in Alaska was promising, verifying this potential. Our goal was to assess the quality of Alaskan scallops using physical and chemical analyses to understand the perceived differences in meat quality. 'Weak meat' (WS) and standard quality (SS) whole weathervane scallops from Yakutat, two batches of scallop muscle from Kodiak (KS1, KS2) and a group of whole PHRS from Southeast Alaska were sampled. Compared to KS1, KS2 and SS, muscle condition was lower (P<0.05), moisture content was higher (P<0.05) and glycogen content was below the detection limit (<0.62%) in WS. There were no differences (P>0.05) in proximate composition between PHRS and Kodiak scallops, however, PHRS had higher (P<0.05) levels of [omega]-6 fatty acids. Results confirmed anecdotal information from harvesters that WS was inferior in quality when compared to either SS or KS. Furthermore, we concluded that PHRS meat was of high quality, similar to Kodiak scallops.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2011
    Table of Contents
    1. General introduction -- 2. Quality assessment of weathervane scallops (Patinopecten caurinus) from Alaska -- 3. Quality assessment of purple hinge scallops (Crassadoma gigantea) from Alaska -- 4. General conclusions -- Appendices.
    Date
    2011-08
    Type
    Thesis
    Collections
    Fisheries

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