Physical, Rheological, Functional, and Film Properties of a Novel Emulsifier: Frost Grape Polysaccharide from Vitis riparia Michx.
A novel emulsifier, Frost grape polysaccharide (FGP), isolated from natural exudate of the species Vitis riparia Michx, was physically and rheologically characterized. The determination of the physical, structural, thermodynamic, emulsification, film, and rheological properties of FGP provide essential details for the commercial adoption of this novel plant polysaccharide. FGP is capable of producing exceptionally stable emulsions when compared with the industrially ubiquitous gum arabic (GA). The FGP isolate contained a negligible amount of nitrogen (0.03%), indicating that it does not contain an associated glycoprotein, unlike GA. Solutions of FGP have a high degree of thermostability, displaying no loss in viscosity with temperature cycling and no thermal degradation when held at 90 °C. FGP is an excellent film former, producing high tensile strength films which remain intact at temperatures up to 200 °C. This work identified a number of potential food and pharmaceutical applications where FGP is significantly superior to GA.
['Hay|William T|WT|', 'Vaughn|Steven F|SF|', 'Byars|Jeffrey A|JA|', 'Selling|Gordon W|GW|', 'Holthaus|Derek M|DM|', 'Price|Neil P J|NPJ|http://orcid.org/0000-0001-6255-4357']
D004355:Drug Stability D045703:Emulsifying Agents D004655:Emulsions D006170:Gum Arabic D006358:Hot Temperature D015394:Molecular Structure D011134:Polysaccharides D012212:Rheology D013718:Tensile Strength D013816:Thermodynamics D014783:Viscosity D027843:Vitis
rheology emulsifier frost grape polysaccharide Vitis riparia gum arabic