title: Dual modification of taro starch by microwave and other heat moisture treatments.
abstract: Effect of heat moisture treatment on the physicochemical properties of taro starch with 25% moisture (w/w) modified by single treatments of microwave (HMT1), autoclave (HMT2) and hot air oven (HMT3), and dual treatments of microwave followed by autoclave (HMT4) and microwave followed by hot air oven (HMT5) were investigated. Amylose contents of the modified starches increased except for HMT3. A loss of physical integrity of the starch granules were observed for dual modified starches. The swelling and solubility of all the modified starches increased. The peak viscosities of starches modified by HMT1 and HMT5 were found to be higher whereas for other modified starches it was lower than that of native starch. The holding and final viscosities of all the modified starches except HMT4 were higher than native starch. The freeze-thaw stabilities of the modified starches were also found to be better than that of native starch.
authors.affiliation: Department of Food Engineering and Technology, Tezpur University, Tezpur, Assam-784028, India.
authors.forename: Dhritiman
authors.initials: D
authors.lastname: Deka
authors.affiliation: Department of Food Engineering and Technology, Tezpur University, Tezpur, Assam-784028, India. Electronic address: nandansit@yahoo.co.in.
authors.forename: Nandan
authors.initials: N
authors.lastname: Sit
mesh_terms: D000688:Amylose / Q000737:chemistry; D031060:Colocasia / Q000737:chemistry*; D003116:Color; D003460:Crystallization; D005615:Freezing; D006358:Hot Temperature; D006813:Humidity; D008872:Microwaves; D011208:Powders; D012995:Solubility; D013213:Starch / Q000737:chemistry* / Q000648:ultrastructure; D014961:X-Ray Diffraction
chemical_list: D011208:Powders; D013213:Starch; D000688:Amylose
keywords: Dual physical modification; Properties; Taro starch