Physicochemical properties of native and γ-irradiated wild arrowhead (Sagittaria sagittifolia L.) tuber starch. 2015

Arif Ali Wani, and Idrees Ahmed Wani, and Peerzada Rashid Hussain, and Adil Gani, and Touseef Ahmad Wani, and Farooq Ahmad Masoodi
Department of Food Science & Technology, University of Kashmir, Srinagar 190006, India.

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.

UI MeSH Term Description Entries
D009821 Oils Unctuous combustible substances that are liquid or easily liquefiable on warming, and are soluble in ether but insoluble in water. Such substances, depending on their origin, are classified as animal, mineral, or vegetable oils. Depending on their behavior on heating, they are volatile or fixed. (Dorland, 28th ed)
D003116 Color The visually perceived property of objects created by absorption or reflection of specific wavelengths of light. Colors
D005511 Food Handling Any aspect of the operations in the preparation, processing, transport, storage, packaging, wrapping, exposure for sale, service, or delivery of food. Food Processing,Handling, Food,Processing, Food
D005615 Freezing Liquids transforming into solids by the removal of heat. Melting
D005720 Gamma Rays Penetrating, high-energy electromagnetic radiation emitted from atomic nuclei during NUCLEAR DECAY. The range of wavelengths of emitted radiation is between 0.1 - 100 pm which overlaps the shorter, more energetic hard X-RAYS wavelengths. The distinction between gamma rays and X-rays is based on their radiation source. Gamma Wave,Gamma Radiation,Nuclear X-Rays,Radiation, Gamma,X-Rays, Nuclear,Gamma Radiations,Gamma Ray,Gamma Waves,Nuclear X Rays,Nuclear X-Ray,Ray, Gamma,Wave, Gamma,Waves, Gamma,X Rays, Nuclear,X-Ray, Nuclear
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000688 Amylose An unbranched glucan in starch.
D012995 Solubility The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Solubilities
D013213 Starch Any of a group of polysaccharides of the general formula (C6-H10-O5)n, composed of a long-chain polymer of glucose in the form of amylose and amylopectin. It is the chief storage form of energy reserve (carbohydrates) in plants. Amylomaize Starch,Amylum,Cornstarch,Keoflo,Starch, Amylomaize
D014867 Water A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Hydrogen Oxide

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