New chitin, chitosan, and O-carboxymethyl chitosan sources from resting eggs of Daphnia longispina (Crustacea); with physicochemical characterization, and antimicrobial and antioxidant activities

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dc.authoridCAKMAK, Yavuz Selim -- 0000-0001-8954-5485; MENTES, AYFER -- 0000-0003-3946-4075; Kaya, Murat -- 0000-0001-6954-2703; BARAN, TALAT -- 0000-0003-0206-3841
dc.contributor.authorKaya, Murat
dc.contributor.authorÇakmak, Yavuz Selim
dc.contributor.authorBaran, Talat
dc.contributor.authorAşan Özüsağlam, Meltem
dc.contributor.authorMenteş, Ayfer
dc.contributor.authorTozak, Kabil Ozcan
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:26:20Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:26:20Z
dc.date.issued2014
dc.departmentSabire Yazıcı Fen Edebiyat Fakültesi
dc.description.abstractThe paper describes the isolation and characterization of chitin and chitosan from Daphnia longispina resting eggs harvested from a reservoir. Resting eggs are fertilized eggs that are encased in chitinous shells called 'ephippia' and which ensure the survival of the Daphnia population in adverse conditions. The chitin-content of D. longispina resting eggs was found to be 23 similar to 25% and the chitosan (having a 70 similar to 75% deacetylation degree) yield of the chitin was 76 similar to 77%. This high chitin-content indicates that D. longispina resting eggs can be exploited as a chitin source. The structure and thermal properties of chitin, extracted from D. longispina resting eggs, were characterized by employing Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction and scanning electron microscopy. The crystallinity of the chitin was found to be very low (48%). Physicochemicallycharacterized chitosan and the produced O-carboxymethyl chitosan were tested for their antimicrobial and antioxidant activity. It has been observed that chitosan displays antimicrobial activity against all pathogenic bacteria, whereas O-carboxymethyl chitosan only exhibits inhibition activity against L. garvieae, L. Monocytogenes ATCC 7644, Y. enterocolitica NCTC 11175 and S. aureus ATCC 25923. In a free radical scavenging activity assay, the IC50 values of chitosan, O-carboxymethyl chitosan and butylated hydroxytoluene were found to be 23.01, 56.43 and 0.05, respectively. The ferric-reducing power of O-carboxymethyl chitosan (EC50 = 8.30) indicated higher activity than chitosan (EC50 = 10.12).
dc.identifier.doi10.1007/s12257-013-0488-9
dc.identifier.endpage69en_US
dc.identifier.issn1226-8372
dc.identifier.issn1976-3816
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage58en_US
dc.identifier.urihttps://doi.org/10.1007/s12257-013-0488-9
dc.identifier.urihttps://hdl.handle.net/20.500.12451/5547
dc.identifier.volume19en_US
dc.identifier.wosWOS:000333012300008
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherKorean Soc Biotechnology & Bioengineering
dc.relation.ispartofBiotechnology and Bioprocess Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectChitin
dc.subjectChitosan
dc.subjectO-carboxymethyl
dc.subjectPhysicochemical Characterization
dc.subjectBiological Activity
dc.titleNew chitin, chitosan, and O-carboxymethyl chitosan sources from resting eggs of Daphnia longispina (Crustacea); with physicochemical characterization, and antimicrobial and antioxidant activities
dc.typeArticle

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