Chitin sponge, extraction procedure from shrimp wastes using green chemistry

✍ Scribed by Ronny Flores; Susana Barrera-Rodríguez; Keiko Shirai; Carmen Durán-de-Bazúa

• Book ID: 101591994
• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 301 KB
• Volume: 104
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.26093

✦ Synopsis

Abstract

Chitin sponges were obtained from shrimp residues using green chemistry procedures. Partial deproteinization was performed by grinding fresh residues with water during 30 s in a food blender obtaining 39.3% d.b. partial deproteinized cephalothorax (PDC). Protein reduction in this step was 80%, with 49% of mineral salts (measured as ashes), 97% fat, and 41% being chitin product. To separate chitin from PDC, a mixture of 8.75 mL MeOH, 16.25 mL water, and 25 g of CaCl~2~ was used (solvent MAC) per gram of PDC. Chitin dissolved in MAC under mechanical agitation to form a sponge, which had an overall composition of 42% chitin, 46% ashes, and 11% proteins. Chitin sponge weathering and biodegradation tests showed that during 30 days, the sponge is stable at ambient conditions in southern Mexico City environment, and when placed in compost‐soil mixtures is degraded in about two weeks. These results open new possibilities to the recycling of crustacean residues. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 3909–3916, 2007