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Astaxanthin profiles and corresponding colour properties in Australian farmed black tiger prawn (Penaeus monodon) during frozen storage

Fanning, Kent J and Paulo, Carl and Pun, Sharon and Torrisi, Caterina and Abberton, Kerrie and Exley, Paul and Poole, Sue (2016) Astaxanthin profiles and corresponding colour properties in Australian farmed black tiger prawn (Penaeus monodon) during frozen storage. Aquaculture Research, 47 (6). pp. 1820-1831. ISSN 1355557X

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Article Link(s): http://dx.doi.org/10.1111/are.12640

Abstract

The colour of commercial cooked black tiger prawns (Penaeus monodon) is a key quality requirement to ensure product is not rejected in wholesale markets. The colour, due to the carotenoid astaxanthin, can be impacted by frozen storage, but changes in colour or astaxanthin profile, during frozen storage, have not been studied in detail. Subsequently in this study, the aims were to define the astaxanthin (as cis, trans, mono-ester and di-ester forms) content, together with the colour properties, in both pleopods (legs) and abdominal segments. Changes in astaxanthin content and colour properties were further determined during frozen storage (−20°C). Total astaxanthin content was seen to decrease in all samples over time, with the rate of degradation being significantly greater (P < 0.05) in pleopods than abdomen. In both pleopods and abdomen, rate of degradation of esterified forms was significantly greater (P < 0.05) than non-esterified forms. Hue angle (increase), a* value (decrease) and L value (increase) were all seen to significantly change (P < 0.05) during storage, with changes being more prevalent in the pleopods. The pleopods are the key indicator of astaxanthin and colour loss in cooked black tiger prawns and preservation strategies are required to preserve astaxanthin and colour during frozen storage.

Item Type:Article
Business groups:Crop and Food Science
Subjects:Aquaculture and Fisheries > Fisheries > Packing, transportation and storage
Aquaculture and Fisheries > Aquaculture > Shellfish culture
Deposited On:24 May 2016 00:31
Last Modified:27 Sep 2017 02:46

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