Vermeire A, Kiekens F, Corveleyn S, Remon J P
Laboratory of Pharmaceutical Technology, University of Gent, Belgium.
Drug Dev Ind Pharm. 1999 Mar;25(3):367-71. doi: 10.1081/ddc-100102184.
Different cationic potato, maize, and waxy maize starches were evaluated for their emulsifying properties. Emulsions were prepared using 20% (w/w) arachidic oil and 80% (w/w) water. Emulsions with the cationic starches as emulsifier in a concentration ranging from 1% to 5% (w/w) were prepared and characterized by droplet size and viscosity measurements, and the stability was evaluated visually and by electrical conductance measurements. None of the cationic potato, waxy maize starches, and maize starches with a low degree of substitution (DS) showed adequate emulsifying properties. Emulsions prepared using non-pregelatinized (C [symbol: see text] bond 05914, 2% and 5% w/w; C [symbol: see text] bond 05907, 5% w/w) and pregelatinized (C [symbol: see text] bond 12504, 5% w/w) cationic maize starches with high-DS were visually stable. The initial mean droplet volume diameter of the emulsions prepared with these cationic starches in a 5% (w/w) concentration was similar and ranged from 2.40 to 2.84 microns; however, there was an important difference in droplet size distribution. The droplet size distribution of the emulsions prepared using the non-pregelatinized high-DS cationic starches was markedly narrower than in the case of the emulsions prepared using the pregelatinized high-DS cationic starches. The droplet size of the emulsions remained almost constant during 120 days of storage. Visual inspection and electrical conductance measurements showed that these emulsions were stable for at least 120 days.
对不同的阳离子马铃薯淀粉、玉米淀粉和糯玉米淀粉的乳化性能进行了评估。使用20%（w/w）的花生油和80%（w/w）的水制备乳液。制备了以浓度为1%至5%（w/w）的阳离子淀粉作为乳化剂的乳液，并通过液滴尺寸和粘度测量对其进行表征，同时通过目视检查和电导率测量评估其稳定性。低取代度（DS）的阳离子马铃薯淀粉、糯玉米淀粉和玉米淀粉均未表现出足够的乳化性能。使用高取代度的未预糊化阳离子玉米淀粉（C [符号：见原文] bond 05914，2%和5% w/w；C [符号：见原文] bond 05907，5% w/w）和预糊化阳离子玉米淀粉（C [符号：见原文] bond 12504，5% w/w）制备的乳液在目视上是稳定的。用这些5%（w/w）浓度的阳离子淀粉制备的乳液的初始平均液滴体积直径相似，范围为2.40至2.84微米；然而，液滴尺寸分布存在重要差异。使用未预糊化的高取代度阳离子淀粉制备的乳液的液滴尺寸分布明显比使用预糊化的高取代度阳离子淀粉制备的乳液更窄。在储存120天期间，乳液的液滴尺寸几乎保持不变。目视检查和电导率测量表明，这些乳液至少在120天内是稳定的。
