Fish is a food that is consumed many people other than as an export
commodity. Fish not only has good taste, it also has nutrients that are very useful.
Basically, fish processing aims to prevent damage or decay. Gelatin is a protein
that can be extracted from the bone. Gelatin in the bones was extracted by hot
water at a temperature 60-100 ° C. A good extraction can result in 14-15% yield
(calculated from the weight of bone). Extraction of gelatin from fish bones is a
business of fish processing waste.
The purpose of this experiments is to determine whether the best processes,
and determine the time it takes to get good results.
The process is done through 4 stages of degreasing, demineralization,
extraction, and drying. Degreasing process includes cleaning the bone by soaking
in boiling water for ± 30 minutes and then drained. The process involves
immersing the bone demineralization in 5% HCl solution, wash, drain, and
cutting. And for stirring performed bone pulverization process into a powder.
Extraction process involves stringing tools and materials, then extracting at a
temperature of ± 90 ° C for (2, 3, 4 hours), further refine the extracted and
concentrated. The process of drying involves drying the solid in an oven at a
temperature of ± 50oC for 24 hours. It was grinded to reduce size and analyze the
best results.
From the experiments it was found that the process is best with a 1:3 ratio
stirring for 4 hours. And from the results of sensory test can be said that the
respondents most preferred products and product closer to market is a product
obtained from the extraction of gelatin with stirrin
