Nghiên cứu sử dụng enzyme alcalase sản xuất bột canxi từ xương cá trê lai (clarias macrocephalus)×(clarias gariepinus)

Abstract

The research on the utilization of hybrid catfish bone as a new material to produce calcium powder to enhance the value of by-product was investigated. The study was conducted to determine the effect of fish step drying time, hydrolysis conditions, dry mode and storage time on the quality of calcium powder. The results showed that fish bone was dried at 60ºC for 3 hours to achieve moisture content of 23.7%. Next to, the sample was hydrolyzed with the Alcalase enzyme at the concentration of 0.3% at 50ºC for 24 hours to remove 30.5% of protein. After that, the sample was dried at 60ºC for 4 hours to abtain the calcium powder with moisture content, solubitily and recovery yield were 4.81; 14.5 và 74.9%, respectively. Calcium powder product from catfish bone had mineral content of 63.2%, moisture content of 5.06% and calcium content account for 22.4%. The product still maintained good quality, food hygiene and safety after 2 weeks stored at room temperature.