title: Concentration of plasticizers applied during heat-moisture treatment affects properties of the modified canna starch.
abstract: Effects of the concentration of plasticizers applied during heat-moisture treatment (HMT) on the properties of canna starch were investigated. The modified starches were prepared by soaking starch in 0 (water), 1, 3, 5, 10, 20 and 30% w/w glycerol or sorbitol solution for 24h and adjusting the moisture content to 25% before HMT (100°C, 1h). Changes in the pasting profiles of heat-moisture treated starches were more obvious when glycerol solutions were used instead of water. An increase in the concentration of glycerol solution from 1% to 5% resulted in a progressive decrease in paste viscosity; paste viscosity then increased as the glycerol concentration rose from 10 to 30%. A similar trend was observed when sorbitol was used as a plasticizer, but with a lesser effect. A scheme for arrangements of the molecular structure of starch during the process of HMT was suggested.
authors.affiliation: Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (Bang Khun Thian Campus), 49 Soi Thian Thale 25, Bang Khun Thian Chai Thale Road, Tha Kham, Bang Khun Thian, Bangkok 10150, Thailand.
authors.forename: Juraluck
authors.initials: J
authors.lastname: Juansang
authors.affiliation: Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (Bang Khun Thian Campus), 49 Soi Thian Thale 25, Bang Khun Thian Chai Thale Road, Tha Kham, Bang Khun Thian, Bangkok 10150, Thailand.
authors.forename: Santhanee
authors.initials: S
authors.lastname: Puncha-Arnon
authors.affiliation: Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (Bang Khun Thian Campus), 49 Soi Thian Thale 25, Bang Khun Thian Chai Thale Road, Tha Kham, Bang Khun Thian, Bangkok 10150, Thailand. Electronic address: dudsadee.utt@kmutt.ac.th.
authors.forename: Dudsadee
authors.initials: D
authors.lastname: Uttapap
authors.affiliation: Department of Biotechnology, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom 73000, Thailand.
authors.forename: Chureerat
authors.initials: C
authors.lastname: Puttanlek
authors.affiliation: Department of Agro-Industrial, Food, and Environmental Technology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, 1518 Pibulsongkram Road, Bangsue, Bangkok 10800, Thailand.
authors.forename: Vilai
authors.initials: V
authors.lastname: Rungsardthong
authors.affiliation: Program of Biology, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, 85 Malaiman Road, Muang, Nakhon Pathom 73000, Thailand.
authors.forename: Yanika
authors.initials: Y
authors.lastname: Watcharatewinkul
mesh_terms: D005511:Food Handling; D005990:Glycerol / Q000737:chemistry; D006358:Hot Temperature; D010968:Plasticizers / Q000032:analysis*; D013012:Sorbitol / Q000737:chemistry; D013213:Starch / Q000737:chemistry*; D014783:Viscosity; D014961:X-Ray Diffraction; D019862:Zingiberales / Q000737:chemistry*
chemical_list: D010968:Plasticizers; D013012:Sorbitol; D013213:Starch; D005990:Glycerol
keywords: Canna starch; Concentration; Heat–moisture treatment; Pasting properties; Plasticizer