Biochemical and antioxidant properties of peptidic fraction generated from crab (Portunus trituberculatus) shells by enzymatic hydrolysis. (17th July 2017)

• Record Type: Journal Article
• Authors: Jiang, Wei; Hu, Shiwei; Li, Shijie; Liu, Yu
• Is Part Of: International journal of food science & technology. Volume 52:Number 11(2017)
• Page Start: 2479
• Page End: 2488
• Publication Date: 2017-07-17
• Subjects: Antioxidant activity -- crab by‐products -- peptides -- protein hydrolysis -- shellfish; Food industry and trade -- Periodicals; 664
• DOI: 10.1111/ijfs.13533
• Languages: English
• ISSNs: 0950-5423

Abstract

Summary: The biochemical properties and in vitro antioxidant activity of the crab ( Portunus trituberculatus ) shell hydrolysates (CSHs) generated by pepsin and protamex hydrolysis were evaluated. The amino acids profile of CSHs showed a high percentage of essential amino acids (>36%). The hydrolysates were mainly composed of low molecular weight peptides (<3 kDa). CSHs showed excellent solubility and possessed interfacial properties, which were governed by their concentrations. The antioxidant activities of CSHs were evaluated using various in vitro antioxidant assays, including the total antioxidant activity, DPPH, hydroxyl and ABTS radical scavenging method and reducing power assay. CSHs exhibited a good antioxidant activity compared to that of ascorbic acid. Results from this study suggested that the peptidic fractions of crab shells were good source of natural antioxidants and peptides with interesting functionalities. Abstract : The biochemical properties and in vitro antioxidant activity of the crab shell hydrolysates (CSHs) generated by enzymatic hydrolysis were evaluated. CSHs showed excellent solubility and possessed interfacial properties. The antioxidant activities of CSHs were evaluated using various in vitro antioxidant assays. CSHs exhibited a good antioxidant activity. Results suggested that the peptidic fractions of crab shells were good source of natural antioxidants and peptides with interesting functionalities.