HomeIngredientProperties of OSA-modified starch and emulsion prepared with different materials: Glutinous rice starch, japonica rice starch, and indica rice starch

Properties of OSA-modified starch and emulsion prepared with different materials: Glutinous rice starch, japonica rice starch, and indica rice starch

October 5, 2022

Food Res Int. 2022 Nov;161:111845. doi: 10.1016/j.foodres.2022.111845. Epub 2022 Aug 27.

ABSTRACT

Octenyl succinic acid (OSA)-modified starch was prepared using three kinds of rice starch with different amylose content: glutinous rice starch (GRS, 3.67 g/100 g), japonica rice starch (JRS, 17.61 g/100 g), and indica rice starch (IRS, 27.94 g/100 g). The degree of polymerization of OSA and the starch types was 0.0093, 0.0143, and 0.0159, respectively. In addition, holes and cracks were observed in the starch particles owing to esterification. The OSA modification introduced OS group and affected hydrogen bond, but exerted no effect on the crystal form (A-type). The contact angle and emulsifying index revealed that OSA-JRS exhibited the most promising emulsification effect compared to the other samples. Next, soybean oil was added into the OSA-JRS solution to prepare an oil-water emulsion. The results revealed that compared to natural JRS, OSA-JRS exhibited decreased D4,3 and a more uniform distribution. Additionally, its absolute potential value increased to 21.34 mV. Further, the dynamic interfacial tension and contact angle of the OSA-modified samples decreased, whereas the storage and loss moduli of the emulsion increased. The shear resistance, centrifugal force resistance, and storage stability of the OSA-modified emulsion significantly improved. The results demonstrated the potential of the OSA-modified JRS for preparing stable emulsions.

PMID:36192898 | DOI:10.1016/j.foodres.2022.111845

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Patrick Blanchard MD

Meet Dr. Blanchard Dr. Blanchard’s medical practice is an embodiment of Integrative health which brings conventional and complementary approaches together in a coordinated way. Conveniently located in sunny Florida and over the internet with ValiseMD’s secure HIPPA compliant telXmed servers. Since 1994, patients with a wide range of challenging medical problems have achieved optimum health using the best of natural medicine, judiciously combined with high-tech innovations. Breakthroughs are often achieved even after patients have consulted mainstream specialists and holistic practitioners. Dr. Blanchard is founder and CEO of ValiseMD, Inc. He is board certified in Family Medicine since 1994 and awarded Fellow of the American Academy of Family Physicians in 2001. He received the ‘Teacher of the Year’ award from the University of Kansas School of Medicine at completion of his residency in Family Medicine. He completed a fellowship at Wake Forest University in the field of vascular neurosonology. He holds a medical patent in the field of Gastroenterology. He holds an unrestricted license to practice medicine and surgery in Florida. He started his medical career as a Emergency Medical Technician, then as a Paramedic and later a Medical Doctor.