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Biologically Active Digests from Pumpkin Oil Cake Protein: Effect of Cross-linking by Transglutaminase

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dc.contributor.author Popović, Ljiljana
dc.contributor.author Stolić, Žužana
dc.contributor.author Čakarević, Jelena
dc.contributor.author Torbica, Aleksandra
dc.contributor.author Tomić, Jelena
dc.contributor.author Šijački, Mirjana
dc.date.accessioned 2018-06-28T14:04:51Z
dc.date.available 2018-06-28T14:04:51Z
dc.date.issued 2017-09-04
dc.identifier.citation Lj. Popović, Ž. Stolić, J. Čakarević, A. Torbica, J. Tomić, M. Šijački. Biologically Active Digests from Pumpkin Oil Cake Protein: Effect of Cross-linking by Transglutaminase. Journal of the American Oil Chemists' Society, 94 (2017) 1245–1251. en_US
dc.identifier.issn 0003-021X
dc.identifier.uri http://oa.fins.uns.ac.rs/handle/123456789/89
dc.description peer-reviewed en_US
dc.description.abstract The objective of this study was to show that biologically active hydrolysates can be obtained by simulated human gastrointestinal digestion (HGD) of transglutaminase cross-linked pumpkin oil cake protein (Tg-C) which was previously reported as a potential functional food additive. A two-stage in vitro digestion model system (by pepsin and α chymotrypsin and trypsin, simultaneously) was used to simulate the process of HGD on native and Tg-C major storage pumpkin oil seed/cake protein, cucurbitin (C). The biologically active potential of the digests was evaluated, measuring the angiotensin-converting-I enzyme (ACE) inhibitory and anti-oxidant capacity. The ACE inhibitory activity was determined in both final digests, with IC50 = 0.30 ± 0.04 mg/ml for C and IC50 = 0.28 ± 0.01 for Tg-C. The anti-oxidant potency of the examined proteins was enhanced by the digestion process. The 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) radical cation activities and reducing power testing showed that all the hydrolysates act as a radical quencher and reducing agents. Overall, the results showed that the cross-linking by Tg did not influence the digestion process, as well as having no effect on the biological activity of the hydrolysates. These also indicate that Tg-C, if used as functional food additive, after food consumption can be digested and become a source of peptides exerting positive effects on human health. en_US
dc.description.sponsorship This work was supported by grant number III 46010 from Ministry of Education, Science and Technological Development of Republic of Serbia. en_US
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.relation info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/46010/RS//
dc.relation.ispartofseries 001;0084
dc.rights info:eu-repo/semantics/openAccess
dc.subject ACE inhibition en_US
dc.subject anti-oxidant activity en_US
dc.subject Cucurbita pepo en_US
dc.subject In vitro digestion en_US
dc.subject transglutaminase en_US
dc.title Biologically Active Digests from Pumpkin Oil Cake Protein: Effect of Cross-linking by Transglutaminase en_US
dc.title.alternative - en_US
dc.type info:eu-repo/semantics/article en_US


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