Preparation, Characterization, and Biological Properties of Hydroxyapatite from Bigeye Snapper () Bone.

The optimum condition of acid hydrolysis for hydroxyapatite extraction from bigeye snapper () bone and the effects of extraction time (10-60 min) and HCl concentration (2.0-5.0% /) on yield and hydroxyapatite properties were determined.

Thermoplastic starch blown films functionalized by plasticized nitrite blended with PBAT for superior oxygen barrier and active biodegradable meat packaging.

Functional bioplastic packaging was produced from thermoplastic starch (TPS) with nitrite (1-5%) and polybutylene adipate terephthalate (PBAT) (PBAT/TPS at 30/70 and 40/60) via blown-film extrusion. TPS-nitrite interaction increased thermal destabilization and decreased α-relaxation temperature of TPS phase, indicating improved plasticization and disruption of starch granules. Nitrite modified C=O bonding of PBAT and improved compatibility with TPS networks, resulting in compact microstructures that reduced oxygen and water vapor permeability.

Improving the Quality of Frozen Fillets of Semi-Dried Gourami Fish () by Using Sorbitol and Citric Acid.

Semi-dried gourami fish () is popularly consumed domestically and exported as a frozen product. This study was conducted to prevent deterioration quality in frozen fish fillets during storage. This research aims to investigate the effects of sorbitol and citric acid at concentrations of 2.