Seasonal changes in the yield and gel properties of agar extracted from Gelidium latifolium (Rhodophyta)

Basit Öğe Kaydı
dc.authoridKAYA, YALCIN/0000-0002-1259-2336
dc.contributor.authorOgretmen, Ozen Yusuf
dc.contributor.authorKaya, Yalcin
dc.date.accessioned2025-03-23T19:44:25Z
dc.date.available2025-03-23T19:44:25Z
dc.date.issued2019
dc.departmentSinop Üniversitesi
dc.description.abstractGelidium latifolium collected monthly at Sinop Peninsula (Black Sea, Turkey) was studied during a 1-year period. Physical and gelling properties of agar extracted from G. latifolium were investigated. Results showed that agar yield was not significantly affected by seasons and ranged from 32.79 +/- 0.78 to 39.26 +/- 0.37%. Quality parameters such as pH, total ash, acid-insoluble ash, and moisture complied with the international standards and acceptance criteria established for agar. High melting temperature (93.86 +/- 0.27 degrees C) and gelling temperature (47.46 +/- 0.20 degrees C) were obtained in autumn. A relatively high viscosity, gel strength was obtained in autumn and during the second half of the year. Lowest acid-insoluble ash (0.012 +/- 0.002%) and moisture (9.276 +/- 0.20%) were obtained in winter, autumn, and spring, respectively. Using G. latifolium from the Sinop Peninsula, good quality of agar with a gel strength ranging from 206.83 +/- 5.36 to 591.85 +/- 2.42 g cm(-2) was obtained, indicating its potential for commercial exploitation. The highest hysteresis temperature was obtained during summer with a maximum in June (48.63 +/- 0.18 degrees C) and a minimum in autumn (46.20 +/- 0.09 degrees C). Results of this study indicate that the best quality agar was obtained during the second period of the year and in autumn. FTIR analysis of agar extracted from G. latifolium showed a fairly constant spectrum that were recorded to contain high gel strengths and low sulfate residues. We conclude that the extracted agar is of good quality agar and may have the potential for commercial agar production.
dc.identifier.doi10.1007/s10811-019-01786-w
dc.identifier.endpage3100
dc.identifier.issn0921-8971
dc.identifier.issn1573-5176
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85065712366
dc.identifier.scopusqualityQ1
dc.identifier.startpage3091
dc.identifier.urihttps://doi.org/10.1007/s10811-019-01786-w
dc.identifier.urihttps://hdl.handle.net/11486/6928
dc.identifier.volume31
dc.identifier.wosWOS:000493895800029
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Applied Phycology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectGelidium latifolium
dc.subjectAgar
dc.subjectPhysicochemical properties
dc.subjectGel properties
dc.subjectSeasonal variation
dc.titleSeasonal changes in the yield and gel properties of agar extracted from Gelidium latifolium (Rhodophyta)
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu