title: Physicochemical properties of native and γ-irradiated wild arrowhead (Sagittaria sagittifolia L.) tuber starch.
abstract: Starch isolated from wild arrowhead tuber was treated by γ-irradiation at 0, 5, 10 and 15kGy doses. Arrowhead tubers yielded 40.33% starch and its chemical composition revealed moisture, protein, ash and fat were 8.34±0.09%, 0.26±0.04%, 0.58±0.02% and 0%, respectively. Physicochemical, morphological and pasting properties of native and irradiated tuber starches were investigated. The results showed that peak, trough, final, and setback viscosities were significantly (p≤0.05) reduced, whereas the breakdown viscosity increased following irradiation. Physicochemical properties differed significantly and showed strong dose dependent relationship. Solubility, water absorption capacity and transmittance increased, whereas swelling power, bulk density and syneresis decreased upon increase in irradiation of starch. Correlation studies showed that irradiation dose was positively correlated with water absorption capacity and solubility index while it correlated negatively with pasting properties, swelling index, syneresis, and freeze thaw stability.
authors: Department of Food Science & Technology, University of Kashmir, Srinagar 190006, India.
authors: Arif Ali
authors: AA
authors: Wani
authors: Department of Food Science & Technology, University of Kashmir, Srinagar 190006, India. Electronic address: idwani07@gmail.com.
authors: Idrees Ahmed
authors: IA
authors: Wani
authors: Astrophysical Sciences Division, Nuclear Research Laboratory, Bhabha Atomic Research Centre, Zakura, Srinagar 190006, India.
authors: Peerzada Rashid
authors: PR
authors: Hussain
authors: Department of Food Science & Technology, University of Kashmir, Srinagar 190006, India.
authors: Adil
authors: A
authors: Gani
authors: Department of Food Science & Technology, University of Kashmir, Srinagar 190006, India.
authors: Touseef Ahmad
authors: TA
authors: Wani
authors: Department of Food Science & Technology, University of Kashmir, Srinagar 190006, India.
authors: Farooq Ahmad
authors: FA
authors: Masoodi
mesh_terms: D065966:Absorption, Physicochemical; D000688:Amylose / Q000032:analysis; D055598:Chemical Phenomena; D003116:Color; D005511:Food Handling; D005615:Freezing; D005720:Gamma Rays; D006863:Hydrogen-Ion Concentration; D009821:Oils / Q000737:chemistry; D034903:Sagittaria / Q000737:chemistry*; D012995:Solubility; D013213:Starch / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D009821:Oils; D014867:Water; D013213:Starch; D000688:Amylose
keywords: Arrowhead; Pasting; Starch; Syneresis; γ-Irradiation