Recovery of Bioactive Components from Seafood By‐products toward Zero‐waste Processing

Trung, Trang Sĩ; Hòa, Nguyễn Văn; Phuong, Pham Thi; Hồng, Nguyễn Thị; Cuong, Hoang Ngoc; Loc, Phan Thanh; Stevens, Willem F.

doi:10.1002/9781119143802.ch135

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“…The leftover residues from crustacean (shrimp, crab, lobster, and prawn) processing factories are the principal source of chitin on an industrial scale. The majority of crustacean shells are composed of chitin (15–40%), protein (20–40%), calcium and magnesium carbonate (20–50%), as well as other minor elements such astaxanthin, lipids, and other minerals [ 8 ]. The isolation strategies documented are varied, as they are mostly dependent on the composition of the source, which varies greatly from one species to the next [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

New Isolated Shrimp (Litopenaeus setiferus) Chitosan-Based Films Loaded with Fly Ash for Antibacterial Evaluation

Alterary

Marei

2022

Polymers

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New three fabricated chitosan (CS) loaded with fly ash (FA) films were developed in this study. The shell waste of white shrimp was used as a precursor for the isolation of chitin and converted into chitosan by carrying out a deacetylation process. The formation of chitosan was conducted by various preparation steps deproteinization, demineralization, and deacetylation. The degree of deacetylation was found to be 95.2%. The obtained chitosan was used to prepare three different chitosan loaded-fly ash films. The prepared films contained various fly ash: chitosan ratios (2:1, FA-CSF1), (1:1, FA-CSF2), and (1:2, FA-CSF3). The obtained films were characterized using FTIR, XRD, and SEM. The micrograph images of the formed films showed spherical particles with an average size of 10 µm. The surface area, adsorption-desorption properties, thermal stability, and water/fat binding features of the fabricated chitosan films were studied. The results revealed that the prepared films displayed typical BET graphs with surface areas ranging from 2.436 m2 g−1 to 8.490 m2 g−1. The fabricated FA-CSF films also showed high thermal stability at temperatures up to 284.9 °C and excellent water/fat binding capacities. The antibacterial potential of the designed films was screened against E. coli (Gram-negative) and B. cereus (Gram-positive) bacterial strains. The tested solution of CS (1%) exhibited inhibition zones for E. coli and B. cereus as 18.51 mm and 14.81 mm, respectively, while in FA solution (1%), the inhibition zones were found to be 10.16 mm, and 13.57 mm, respectively. The results encourage and open up the new and promising areas of research for applying chitosan extracted from waste materials in biological applications.

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Section: Introductionmentioning

confidence: 99%