Details

Autor(en) / Beteiligte

• Hu, Zhenhua
• Xiang, Zhouyang
• Wang, Luliang
• Liu, Yushen
• Wang, Ping

Titel

Homogeneous esterification of glucuronoxylans and investigation of their emulsifying properties

Ist Teil von

• Cellulose (London), 2023-07, Vol.30 (11), p.6855-6867

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Hemicellulose, which is an abundant polysaccharide, has the potential to be an alternative for petroleum-based emulsifiers. In this study, dodecenyl succinic anhydride (DDSA) modified glucuronoxylans (DDSA-GLX) with high degree of substitution (DS) were synthesized through homogeneous esterification. The emulsifying properties of DDSA-GLX were investigated. The influences of pH, DS, calcium and sodium ions, and solvent system on the emulsifying properties (droplet size, zeta potential, emulsifying activity, and emulsion stability) were evaluated. The results indicated that the DS hold positive impact on the emulsifying properties of DDSA-GLX. With the increasing of DS, DDSA-GLX emulsions showed smaller droplet size (~ 0.56 μm), lower zeta potential (− 27.6 mV), higher emulsifying activity (0.989), and better emulsion stability. In addition, DDSA-GLX showed better emulsifying properties at pH 6.5 and pH 8.5. Calcium and sodium ions had negative impacts on the emulsifying properties of DDSA-GLX. Furthermore, DDSA-GLX prepared in water showed better emulsifying properties than those of DDSA-GLX prepared in DMSO (DS = 0.044). To sum up, the DDSA-GLX with high DS (up to 0.328) presented satisfactory emulsifying properties and the potential to be an alternative for petroleum-based emulsifiers.