title: Formation of resistant corn starches induced by gamma-irradiation.
abstract: The effect of gamma-irradiation on formation of resistant starch (RS) in corn starch with different amylose content was examined. Normal corn starch, waxy corn starch, and high amylose corn starch (Hylon V and Hylon VII) were irradiated at 5, 10, 25 and 50 kGy. Gamma-irradiation at 5 kGy increased the amylose-like molecules in starches and thus significantly enhanced the RS content (p<0.05). Highest RS content was produced by 50 kGy irradiated in all the starch samples (p<0.05). The irradiation-induced RS was more evident in waxy corn starch, followed by high amylose corn starch and normal corn starch.
authors.affiliation: School of Food Science and Nutrition, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia. jslee@ums.edu.my
authors.forename: Jau-Shya
authors.initials: JS
authors.lastname: Lee
authors.forename: Min-Lee
authors.initials: ML
authors.lastname: Ee
authors.forename: Kok-Heung
authors.initials: KH
authors.lastname: Chung
authors.forename: Zainon
authors.initials: Z
authors.lastname: Othman
mesh_terms: D000688:Amylose / Q000032:analysis; D004307:Dose-Response Relationship, Radiation; D005720:Gamma Rays; D008855:Microscopy, Electron, Scanning; D013213:Starch / Q000138:chemical synthesis* / Q000528:radiation effects*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D013213:Starch; D000688:Amylose
keywords: Apparent amylose content; Digestibility; Hylon V; Hylon VII; Normal corn starch; Waxy corn starch