期刊
FOOD HYDROCOLLOIDS
卷 63, 期 -, 页码 170-177出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2016.08.039
关键词
Brea gum; Emulsion; Rheology; Stability
资金
- project Extensive use of non-wood forest products: purification, characterization and applications of Brea Gum and Espina Corona Gum [PICT-2011-1118]
- CAI+D, UNL LI: Utilization of a native polysaccharide for protection of lipophilic compounds [501 20110100021]
The emulsifying properties of Brea gum (BG), the exudate from Cercidium praecox, were studied in comparison to gum Arabic (GA). Droplet size distributions, rheological properties and stability of corn oil emulsion stabilized with BG and GA solutions were analyzed. The results showed that an increase in BG concentration led to a decrease in Z-average diameter and to an increase in emulsion apparent viscosity and stability. All emulsion flow curves presented shear-thinning behavior at low shear rates and New-tonian plateau at high shear rates. The mechanical spectra showed droplets tending to arrange as a network in the emulsions which was related to the high stability. BG emulsion presented higher viscosity and stability than GA emulsion at the same concentration suggesting that BG could replace GA in some industrial applications. (C) 2016 Elsevier Ltd. All rights reserved.
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