Effect of invasive blue crab chitosan coating on extending the shelf life and quality of fresh strawberry fruits


  • Dhaker Troudi University of Carthage, Higher Institute of Fisheries and Aquaculture of Bizerte, Research Unit: Exploitation of Aquatic Environments, Errimel, B.P.15. 7080 Bizerte, Tunisia




Invasive species, decapods, blue crab shell, chitosan, antimicrobial and antioxidant activity, Tunisian waters.


The diversity of marine biomasses is a set of exploitable and renewable resources with application in several sectors. The blue crab was considered as a threat by the Tunisian fishermen in 2014, since it induces several damages on nets but also on captures. In addition, in 2017, the Tunisian State launched a plan to exploit and promote this species of crab. In the context of valuation, the chitin was isolated by a conventional chemical method from the shell of blue crabs. The efficiency of chitin extraction from Callinectes sapidus (C. sapidus) was achieved with a yield of 27.6 %.Then; the chitosan was prepared by N-deacetylation of chitin with a yield of 16 %, leading to a degree of acetylation (DA) of 89.9%. For Portunus segnis (P. segnis) the yield of chitin was 31.2% while the chitosan yield was 20% and the degree of acetylation was 79.9% After these analyzes, it can be deduced that chitosan has a high degree of purity and that it is considered effective for the preservation of strawberries in favor of its antioxidant and antimicrobial capacity.


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How to Cite

Troudi, D. (2022). Effect of invasive blue crab chitosan coating on extending the shelf life and quality of fresh strawberry fruits. ICONTECH INTERNATIONAL JOURNAL, 6(2), 1–9. https://doi.org/10.46291/ICONTECHvol6iss2pp1-9