title: Pasting properties of heat-moisture treated canna starches using different plasticizers during treatment.
abstract: Different plasticizers (propanol, propylene glycol, glycerol, erythritol, xylitol and sorbitol) were used for plasticizing canna starch during heat-moisture treatment (HMT). Pasting properties of the modified starches were determined and compared with those of native starch and of HMT starch using water as a plasticizer. Canna starch was soaked in 5% (w/w) plasticizer solutions and adjusted to 25% moisture content before heating at 100 °C for 1h. The least change in paste viscosity was found when water was used as a plasticizer. Viscosity of the modified starches decreased as the molecular weight of plasticizers decreased. Plasticizer content in starch granules increased with decreasing molecular weight of the plasticizer, as well as with increased soaking time (from 10 min to 4 and 24h). However, pasting profiles of HMT starches prepared by soaking for 4h were comparable to those soaked for 24h, indicating that there was an effective limit of plasticizers. The plasticizer content in starch granules played a greater role in HMT than the number of hydroxyl groups.
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: 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 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: 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.
authors.forename: Wittawat
authors.initials: W
authors.lastname: Jiranuntakul
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
mesh_terms: D006358:Hot Temperature; D006878:Hydroxides / Q000737:chemistry; D009824:Ointments; D010968:Plasticizers / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*; D013997:Time Factors; D019862:Zingiberales / Q000737:chemistry*
chemical_list: D006878:Hydroxides; D009824:Ointments; D010968:Plasticizers; D013213:Starch; C031356:hydroxide ion
keywords: Canna starch; Heat–moisture treatment; Pasting properties; Plasticizer