The effect of replacement of cow's gelatin by Cyprinus carpio skin gelatin on the some mineral contents and color parameters of functional pastill
Gelatin is a valuable protein source and a commercial hydrocolloid which is particularly applied for food, pharmaceutical, and photographic industries. Commercial gelatin is basically from pig and cow, which because of religious reasons and risk of transmission of Bovine spongiform encephalopathy (BSE) respectively, not acceptable to use. Therefore gelatin extraction from fish, and especially it,s waste has considerable importance. In the present study, after the extraction of gelatin from economic fish skin of carp (Cyprinus carpio), various formulations of this gelatin with cow,s gelatin have been used in ratios of 0, 25, 50, 75 and 100% to pastill production. Then, the physicochemical experiments include of ash, protein, moisture, iron, phosphorus, zinc and lithium content, and color measurement were done on one day after of pastill production. The results showed that the treatment based on 75% fish gelatin had the highest moisture, protein, phosphorus, iron, ash and zinc content (p<0.05) while the highest level of potassium and lithium content was related to treatment based on 100% industrial gelatin (Cow,s) (p<0.05). Industrial treatment showed the highest L* value (lightness) and the lowest index a* (green–red) and b* (blue–yellow) value (p<0.05). It can be concluded that useless waste of fish as halal gelatin can be a good substitute instead of other gelatin for children's favorite junk foods, which has higher levels of zinc and protein content with economical benefits.
Iranian Journal of Aquatic Animal Health , Volume:4 Issue:2, 2019
40 - 54
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