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Process for the production of tilapia retorted skin gelatin hydrolysates with optimized antioxidative properties

Paper ID Volume ID Publish Year Pages File Format Full-Text
35068 45071 2009 6 PDF Available
Title
Process for the production of tilapia retorted skin gelatin hydrolysates with optimized antioxidative properties
Abstract

Thermally hydrolyzed tilapia skin gelatin demonstrated noticeable free-radical scavenging and inhibition of lipid peroxidation. Five factors in production of retorted skin gelatin hydrolysate (RSGH) were screened using a fractional factorial design to identify critical factors. Phosphoric acid concentration, water/skin ratio, and retorting time had significant effects on α,α-diphenyl-β-picrylhydrazyl (DPPH) scavenging by RSGHs. A face-centered, central composite design in these three factors was used to collect data that resulted in strong response surface models of DPPH scavenging (R2 = 0.977) and inhibition of lipid peroxidation (R2 = 0.967). The most effective condition resulted in 80.3% DPPH scavenging and 75.0% inhibition of lipid peroxidation. The models were used to predict maxima for the two properties. These were 79.4% for DPPH scavenging activity and 77.3% for lipid peroxidation inhibition. Antioxidative tilapia RSGH has potential as a natural antioxidant because a large amount of low-priced skin by-products can be obtained from the tilapia filleting industry.

Keywords
Tilapia; Skin gelatin; Thermal hydrolysis; Hydrolysate; Antioxidative activity; Optimization
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Process for the production of tilapia retorted skin gelatin hydrolysates with optimized antioxidative properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 44, Issue 10, October 2009, Pages 1152–1157
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us