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Comparative biochemical profile of protein-rich products obtained from industrial rapeseed meal

2017Journal article Open access
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dc.contributor.authorIvanova, Petya
dc.contributor.authorKalaydzhiev, Hristo
dc.contributor.authorRustad, Turid
dc.contributor.authorSilva, Cristina L. M.
dc.contributor.authorChalova, Vesela I.
dc.date.accessioned2017-12-18T19:32:53Z
dc.date.available2017-12-18T19:32:53Z
dc.date.issued2017
dc.description.abstractProtein-rich products, prepared from industrial rapeseed meal, have the potential for versatile applications in the food-, feed-, and nutraceutical industries. The aim of study was to characterize the biochemical composition of two protein-rich products obtained from industrially produced rapeseed meal. Protein isolate (PI) and acid soluble protein (ASP) were prepared by alkaline extraction (pH 12.0) followed by isoelectric precipitation (pH 4.5). Biochemical analyses revealed that PI contained a high protein amount (86.9%), while ASP had 28.8% protein and a relatively high level of non- protein compounds including ash (20.6%) and fiber (30.0%). Results showed that neither protein products contained glucosinolates. They were rich in microelements; the most abundant were Cu (64.3 mg kg-1) and Fe (133 mg kg-1) in PI and Mn (39.7 mg kg-1) and Zn (84.2 mg kg-1) in ASP. PI and ASP were also a good source of Se (1.1 mg kg-1 and 0.9 mg kg-1, respectively). Lysine was the most abundant essential amino acid in PI with amino acid score of 100.7% followed by leucine (98.3%) and valine (95.8%). Both protein products were mainly composed of low molecular weight fractions (5 to 33 kDa) but in different ratio. The PI contained two fractions with molecular weights 53 and 235 kDa which were not found in ASP. In conclusion, PI and ASP exhibited different biochemical characteristics which make them suitable for different applications.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationIvanova, P., Kalaydzhiev, H., Rustad, T., Silva, C. L. M., & Chalova, V. I. (2017). Comparative biochemical profile of protein-rich products obtained from industrial rapeseed meal. Emirates Journal of Food and Agriculture, 29(3), 170-178pt_PT
dc.identifier.doi10.9755/ejfa.2016-11-1760pt_PT
dc.identifier.eid85013409469
dc.identifier.eissn2079-0538
dc.identifier.issn2079-052X
dc.identifier.urihttp://hdl.handle.net/10400.14/23727
dc.identifier.wos000396593900002
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherUnited Arab Emirates Universitypt_PT
dc.subjectAcid soluble proteinpt_PT
dc.subjectIndustrial rapeseed mealpt_PT
dc.subjectProtein isolatept_PT
dc.titleComparative biochemical profile of protein-rich products obtained from industrial rapeseed mealpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage178pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage170pt_PT
oaire.citation.titleEmirates Journal of Food and Agriculturept_PT
oaire.citation.volume29pt_PT
person.familyNameIvanova
person.familyNameSilva
person.givenNamePetya
person.givenNameCristina
person.identifier1473674
person.identifier.ciencia-id6611-634A-132C
person.identifier.orcid0000-0002-0626-5435
person.identifier.orcid0000-0002-0495-3955
person.identifier.ridA-3568-2013
person.identifier.scopus-author-id7004605675
person.identifier.scopus-author-id7201387397
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication14adb3d6-e30c-4566-92c2-74535363e2eb
relation.isAuthorOfPublication4e2903de-0679-4cb1-981e-10de14c0c995
relation.isAuthorOfPublication.latestForDiscovery4e2903de-0679-4cb1-981e-10de14c0c995

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