title: Modification of foxtail millet starch by combining physical, chemical and enzymatic methods.
abstract: Modification of foxtail millet starch was carried out by heat moisture treatment (HT), acid hydrolysis (AH), enzymatic treatment (EH), Ultrasound treatment (UT) and their combinations. A total of 15 modified starches were prepared by combining the various methods and properties were compared with native starch. The solubilities of the starches modified by HT were found to decrease whereas for other single modifications it increased. It also increased with number of modifications applied. The swelling power decreased for all the modified starches and a decrease in swelling power was observed with increase in number of modifications. Freeze-thaw stability improved for starches modified by single physical modifications i.e. HT and UT. Decrease in viscosities was observed for the modified starches and was particularly affected by AH. The pasting temperature was found to increase for those modified starches where HT was carried out. The modified starches gave softer gels.
authors.affiliation: Department of Food Engineering and Technology, Tezpur University, Assam 784028, India.
authors.forename: Ashim
authors.initials: A
authors.lastname: Dey
authors.affiliation: Department of Food Engineering and Technology, Tezpur University, Assam 784028, India. Electronic address: nandansit@yahoo.co.in.
authors.forename: Nandan
authors.initials: N
authors.lastname: Sit
mesh_terms: D001236:Aspergillus oryzae / Q000201:enzymology; D003116:Color; D004355:Drug Stability; D005615:Freezing; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D032983:Setaria Plant / Q000737:chemistry*; D012995:Solubility; D013213:Starch / Q000737:chemistry* / Q000378:metabolism*; D000069453:Ultrasonic Waves; D000516:alpha-Amylases / Q000378:metabolism*
chemical_list: D013213:Starch; D000516:alpha-Amylases
keywords: Acid hydrolysis; Combined modification; Enzymatic treatment; Foxtail millet starch; Heat moisture treatment; Ultrasound treatment