Effects of Molecular Weight and Guluronic Acid/Mannuronic Acid Ratio on the Rheological Behavior and Stabilizing Property of Sodium Alginate
| العنوان: | Effects of Molecular Weight and Guluronic Acid/Mannuronic Acid Ratio on the Rheological Behavior and Stabilizing Property of Sodium Alginate |
|---|---|
| المؤلفون: | Boqiang Wang, Haiming Chen, Weijun Chen, Yuqi Mei, Qiuping Zhong, Wenxiao Jiao, Wenxue Chen, Yong-Huan Yun |
| المصدر: | Molecules Volume 24 Issue 23 |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Alginates, Sodium, rheological behavior, Pharmaceutical Science, chemistry.chemical_element, 02 engineering and technology, Article, Analytical Chemistry, sodium alginate, 0404 agricultural biotechnology, Rheology, Drug Discovery, Zeta potential, Physical and Theoretical Chemistry, Fourier transform infrared spectroscopy, Shear thinning, Hexuronic Acids, Organic Chemistry, 04 agricultural and veterinary sciences, Apparent viscosity, 021001 nanoscience & nanotechnology, 040401 food science, Creaming, Chemical engineering, chemistry, Chemistry (miscellaneous), Emulsion, emulsifying property, Molecular Medicine, Emulsions, 0210 nano-technology |
| الوصف: | The aim of this study was to prepare sodium alginates (SAs) with different molecular weight and G/M ratio, and characterize their rheological behaviors and emulsifying properties. The result of Fourier transform infrared (FTIR) showed that the chemical bonds among the &beta d-mannuronic acid- (M-), &alpha l-guluronic acid- (G-), and MG-sequential blocks in the SA chains were not changed significantly by acid treatment. Meanwhile, the molecular weight and G/M ratio of the SA exhibited drastic variation after acid modification. The result of rheological analysis suggesting that the apparent viscosity of SA reduced from 30 to 16.4 mPa.s with the increase of shear rate, reveals that SA solution belongs to pseudoplastic liquid. Also, the apparent viscosity of acid-modified SA solution dropped rapidly with the decrease of the molecular weight. The properties of emulsions stabilized by SA, SA-Ms, and commercial SAs were evaluated via the interface tensiometry and determination of the zeta potential, droplet size, creaming index (CI), and Turbiscan stability index (TSI). Compared with the SA-stabilized emulsion, the interfacial tension of the emulsion stabilized by SA-M increased with the decrease of the molecular weight reduced at the similar M/G ratio. The decrease in zeta potential and the increase in TSI of the emulsion were observed with the decrease of molecular weight, indicating that molecular weight plays an important role on the emulsifying ability of SA. In addition, the SA with low G/M ratio can form emulsions with stable and fine droplets. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1420-3049 |
| DOI: | 10.3390/molecules24234374 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::615c0587cd82f84c5356c8f09df2bf4a |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....615c0587cd82f84c5356c8f09df2bf4a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14203049 |
|---|---|
| DOI: | 10.3390/molecules24234374 |