Evaluation of Process Conditions and Food Quality in Carob Molasses Production by Osmotic Distillation

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dc.authorid0000-0001-5854-0622
dc.contributor.authorTan, Esranur
dc.contributor.authorHasanoglu, Ayca
dc.contributor.authorOral, Rasim Alper
dc.date.accessioned2026-02-08T15:15:01Z
dc.date.available2026-02-08T15:15:01Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractCarob fruit, rich in nutrients and beneficial for treating chronic gastrointestinal diseases, is typically consumed as a concentrated extract. However, conventional methods to process it in a concentrated form can alter its food quality due to the employment of high temperatures. In this work, carob molasses is produced by osmotic membrane distillation utilizing a hydrophobic hollow fiber membrane contactor. Carob extract of 12 degrees Brix obtained by ultrasonication at 25 degrees C was employed as the feed solution while 4 M of CaCl2 solution was used as the draw solution. The impacts of process temperature and the feed and draw solution flowrates on transmembrane flux in osmotic distillation were investigated. The highest water flux value was 378.7 g m-2 h-1. The study compared osmotic distillation with thermal and vacuum evaporation methods in terms of physicochemical properties, color, antioxidant and phenolic activity, and 5-hydroxymethylfurfural (HMF) kinetics of the products obtained by each of said methods. The carob juice was concentrated to approximately 63 degrees Brix from 12 degrees Brix by each method. The products obtained by osmotic distillation contained higher phenolic (498.64 mg GAE/100 g) and antioxidant activity (434.05 mg TE/100 g) than the ones obtained by other methods. Furthermore, osmotic distillation avoided HMF formation. This research is a pioneer study on carob concentration using osmotic distillation. The study revealed key insights into extraction and optimization techniques and into the adaptability of osmotic distillation systems for obtaining food extracts. The experimental results show that with further research and technological advances, these systems could significantly impact the food industry.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBITAK)
dc.description.sponsorshipOpen access funding provided by the Scientific and Technological Research Council of Turkiye (TUBITAK).
dc.identifier.doi10.1007/s11947-025-03827-4
dc.identifier.endpage6503
dc.identifier.issn1935-5130
dc.identifier.issn1935-5149
dc.identifier.issue7
dc.identifier.scopus2-s2.0-105002730099
dc.identifier.scopusqualityQ1
dc.identifier.startpage6489
dc.identifier.urihttps://doi.org/10.1007/s11947-025-03827-4
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5562
dc.identifier.volume18
dc.identifier.wosWOS:001468958900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofFood and Bioprocess Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzWOS_KA_20260207
dc.subjectEvaporation
dc.subjectHollow fiber membrane
dc.subjectHydroxymethylfurfural (HMF)
dc.subjectJuice concentration
dc.subjectNon-thermal process
dc.titleEvaluation of Process Conditions and Food Quality in Carob Molasses Production by Osmotic Distillation
dc.typeArticle

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