Interfacial and Emulsifying Properties of Soybean Peptides with Different Degrees of Hydrolysis
| Autor: | Masahiko Abe, Tomohiro Imura, Mio Nakayama, Dai Kitamoto, Hideki Sakai, Toshiaki Taira |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
food.ingredient
Light General Chemical Engineering Liquid paraffin Peptide Soybean oil Surface tension Surface-Active Agents Hydrolysis food Dynamic light scattering Freeze Fracturing Mineral Oil Scattering Radiation Surface Tension Particle Size Plant Proteins chemistry.chemical_classification Chromatography Chemistry General Medicine General Chemistry Soybean Oil Chemical engineering Transmission electron microscopy Emulsifying Agents Oil droplet Microscopy Electron Scanning Emulsions Soybeans Peptides |
| Zdroj: | Journal of Oleo Science. 64:183-189 |
| ISSN: | 1347-3352 1345-8957 |
| DOI: | 10.5650/jos.ess14167 |
| Popis: | In this study, the effects of the degree of hydrolysis on the interfacial and emulsifying properties of soybean peptides were evaluated based on surface and interfacial tension, dynamic light scattering (DLS), and freeze-fracture transmission electron microscopy (FF-TEM) analyses. Of the five evaluated soybean peptides (SP95, SP87, SP75, SP49, and SP23), those with higher degrees of hydrolysis (SP95 and SP87) did not exhibit noticeable surface-active properties in water, whereas those with relatively low degrees of hydrolysis (SP75, SP49, and SP23) exhibited remarkable surface tension-lowering activity. The latter set (SP75, SP49, and SP23) also formed giant associates with average sizes ranging from 64.5 nm to 82.6 nm above their critical association concentration (CAC). Moreover, SP23 with the lowest degree of hydrolysis exhibited excellent emulsifying activity for soybean oil, and FF-TEM analysis demonstrated that the emulsions were stabilized by a lamella-like multilayer peptide structure on the oil droplets that prevented coagulation. The peptide with the lowest degree of hydrolysis (SP23) was effective not only for soybean oil emulsification, but also for the emulsification of liquid paraffin and silicon oil that are generally difficult to emulsify. |
| Databáze: | OpenAIRE |
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