Liquorilactobacillus hordei SK6 and Liquorilactobacillus mali SK26 from Traditional Water Kefir Produce Dextrans with Technological Roles
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The significance of exopolysaccharides (EPS) in various applications has garnered increasing attention. In this study, two bacteria, Liquorilactobacillus hordei SK6 and Liquorilactobacillus mali SK26, isolated from traditional water kefir grains, produced 8.89 g/L and 7.2 g/L of homopolymeric glucan, respectively. NMR analysis revealed that both glucans were dextrans composed of (1 -> 6)-linked alpha-d-glucose units, with (1 -> 3)-linked alpha-d-glucose units serving as branching points, accounting for 5.3 +/- 0.2% in dextran SK6 and 2.7 +/- 0.15% in SK26. FTIR and XRD analyses further confirmed the amorphous nature of the dextrans, although dextran SK6 exhibited micro-arranged structures. Thermal characterization using TGA and DSC showed degradation temperatures of 298.5 degrees C for dextran SK6 and 282.1 degrees C for dextran SK26. Clear differences in morphological properties were observed using AFM and SEM. These findings provide valuable insights into dextran-producing strains and their potential applications in various industries.
Açıklama
Anahtar Kelimeler
Water kefir, Glucan, Exopolysaccharides (EPS)
Kaynak
Applied Biochemistry And Biotechnology
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
197
Sayı
3
