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Antioxidant properties of ultrafiltration-recovered soy protein fractions from industrial effluents and their hydrolysates

Paper ID Volume ID Publish Year Pages File Format Full-Text
36181 45123 2006 10 PDF Available
Title
Antioxidant properties of ultrafiltration-recovered soy protein fractions from industrial effluents and their hydrolysates
Abstract

The protein solubilized during the production of soy concentrates was recovered by ultrafiltration and subjected to enzyme hydrolysis with a commercial protease. The raw proteins separated by ultrafiltration and the hydrolyzates of high molecular weight fractions were assayed for antioxidant activity. The fraction with molecular weight <10 kDa presented the highest antioxidant activity using all the methods considered. Hydrolyzates showed higher reducing power, higher antioxidant potency in emulsion and enhanced radical scavenging capacity than the original fractions, whereas their ability for inhibiting the β-carotene bleaching was comparable to those of synthetic antioxidants. Hydrolyzates from the fraction with molecular weight between 30 and 50 kDa showed the highest hydroxyl radical scavenging capacity, and the highest Trolox Equivalent Antioxidant Capacity (TEAC) (up to 6.6 mM Trolox) was recorded for hydrolyzates from the fraction with molecular weight higher than 50 kDa.

Keywords
Soy; Soluble protein; Membrane ultrafiltration; Protease; Peptide; Antioxidant
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Antioxidant properties of ultrafiltration-recovered soy protein fractions from industrial effluents and their hydrolysates
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 2, February 2006, Pages 447–456
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
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Price after discount Only $4.95
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Full-text PDF Download
Online Support
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