Ohmic Heating (OH)-Assisted Extraction of Bovine Hide Gelatin: Functional and Physicochemical Comparison With Halal Commercial Gelatins

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dc.authorid0000-0003-1173-5793
dc.contributor.authorDemirel, Fatma Tuba Kirac
dc.contributor.authorIsik, Cigdem Akdemir
dc.contributor.authorParlak, Mahmut Ekrem
dc.contributor.authorOdabas, Halil Ibrahim
dc.contributor.authorDagdelen, Adnan Fatih
dc.contributor.authorSaricaoglu, Furkan Turker
dc.date.accessioned2026-02-08T15:15:42Z
dc.date.available2026-02-08T15:15:42Z
dc.date.issued2026
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractConventional gelatin extraction from high-collagen tissues requires prolonged thermal processing (8-10 h), resulting in high energy consumption and potential degradation of functional properties. To address this limitation, this study investigated ohmic heating (OH) as an alternative extraction method for bovine hide gelatin. Gelatin was extracted using voltage gradients of 5-20 V/cm for 1-5 h and compared with both conventional extraction parameters and commercial halal gelatins. OH markedly reduced the extraction time to 1-5 h while maintaining a maximum temperature of 70 degrees C, resulting in significantly improved extraction efficiency and higher dry matter and protein contents (p < 0.05). Although gel strength (122.12-176.81 g) was lower than that of commercial bovine gelatin (242.44 g), all OH-treated samples except those extracted at 20 V/cm formed stable gels. SDS-PAGE and compositional analyses indicated that OH induced partial degradation of high-molecular-weight fractions, consistent with the observed gel strength trends. The amino acid profiles, dominated by glycine, proline, and hydroxyproline, and the viscoelastic behavior (G ' > G '') were comparable to commercial references. Thermal analyses further revealed sharper melting transitions and higher Delta H values, suggesting improved thermal stability. Microstructural changes in pore size and distribution supported the observed functional differences. Overall, OH-assisted extraction provides an efficient, energy-saving, and thermally controlled approach to gelatin production. To our knowledge, this is the first study to demonstrate the applicability of ohmic heating for extracting gelatin from bovine hide, underscoring its potential as a sustainable alternative to conventional processing methods.
dc.description.sponsorshipTurkiye Bilimsel ve Teknolojik Arastimath;rma Kurumu [121O112]
dc.description.sponsorshipThis work was supported by Turkiye Bilimsel ve Teknolojik Arast & imath;rma Kurumu with a project number of 121O112.
dc.identifier.doi10.1111/jfpe.70320
dc.identifier.issn0145-8876
dc.identifier.issn1745-4530
dc.identifier.issue1
dc.identifier.scopus2-s2.0-105026664791
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1111/jfpe.70320
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5923
dc.identifier.volume49
dc.identifier.wosWOS:001654859000001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofJournal of Food Process Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzWOS_KA_20260207
dc.subjectcollagen hydrolysis
dc.subjecthalal biopolymer
dc.subjectnovel heating technologies
dc.subjectprotein functionality
dc.subjectsustainable extraction
dc.titleOhmic Heating (OH)-Assisted Extraction of Bovine Hide Gelatin: Functional and Physicochemical Comparison With Halal Commercial Gelatins
dc.typeArticle

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