title: Physical stability of R-(+)-Limonene emulsions stabilized by Ulva fasciata algae polysaccharide.
abstract: The physical stability of R-(+)-Limonene emulsions stabilized by Ulva fasciata polysaccharide (UFP) was investigated in this study. Emulsion physical stability was evaluated under different polysaccharide concentrations (1%-5%, wt/wt) and pH values (3.0-11.0). The stability of R-(+)-Limonene emulsions was demonstrated by droplet size distribution, rheological properties, zeta potential and visual phase separation. R-(+)-Limonene emulsions displayed monomodal droplet size distributions, high absolute values of zeta potential and good storage stability when 3% (wt/wt) UFP was used. The rheological properties and stability of R-(+)-Limonene emulsions appeared to be dependent on polysaccharide concentration. The emulsion stability was impacted by pH. Higher zeta potential (-52.6mV) and smaller mean droplet diameter (2.45μm) were achieved in neutral liquid environment (pH 7.0). Extreme acidity caused the flocculation of emulsions, which was manifested as phase separation, while emulsions were quite stable in an alkaline environment. Through comparing the stabilities of emulsions stabilized by different emulsifiers (i.e. UFP, GA and Gelatin), the result suggested that UFP was the best emulsifying agent among them.
authors: Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, PR China. Electronic address: pingshao325@zjut.edu.cn.
authors: Ping
authors: P
authors: Shao
authors: Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, PR China.
authors: Huiling
authors: H
authors: Ma
authors: Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, PR China.
authors: Qiang
authors: Q
authors: Qiu
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, PR China.
authors: Weiping
authors: W
authors: Jing
mesh_terms: D053138:Cyclohexenes / Q000737:chemistry*; D004655:Emulsions / Q000737:chemistry*; D005615:Freezing; D006863:Hydrogen-Ion Concentration; D000077222:Limonene; D008970:Molecular Weight; D010316:Particle Size; D011134:Polysaccharides / Q000737:chemistry*; D055672:Static Electricity; D013729:Terpenes / Q000737:chemistry*; D044445:Ulva / Q000737:chemistry*; D014783:Viscosity
chemical_list: D053138:Cyclohexenes; D004655:Emulsions; D011134:Polysaccharides; D013729:Terpenes; D000077222:Limonene
keywords: Physical stability; R-(+)-Limonene; Ulva fasciata polysaccharide