title: Functional and rheological properties of cold plasma treated rice starch.
abstract: The present work deals with aimed to study the effect of cold plasma treatment on the functional and rheological properties of rice starch using two different power levels (40 and 60W). The changes in amylose content, turbidity, pH, water and fat absorption due to plasma treatment were evaluated. Where decrease in the turbidity and pH after the treatment was observed. Gel hydration properties and syneresis study revealed that there is an increase in leaching of amylose molecules after the treatment. Rapid Visco Analyzer examination showed an increase in pasting and final viscosities. From G' and G″ moduli determination we observed that there is decrease in retrogradation tendency of starch gels. XRD did not show any change in A-type pattern but decrease in the relative crystallinity was observed due to depolymerization caused by active plasma species. FTIR shows some of the additional functional groups after treatment. SEM showed formation of fissures on the surface of starch granules due to etching caused by the plasma species. Thus, plasma treatment can be one of the methods for physical modification of starch.
authors.affiliation: Department of Food Engineering & Technology, Institute of Chemical Technology, Mumbai, 400019, India.
authors.forename: Rohit
authors.initials: R
authors.lastname: Thirumdas
authors.affiliation: Department of Physics, Institute of Chemical Technology, Mumbai, 400019, India.
authors.forename: A
authors.initials: A
authors.lastname: Trimukhe
authors.affiliation: Department of Physics, Institute of Chemical Technology, Mumbai, 400019, India.
authors.forename: R R
authors.initials: RR
authors.lastname: Deshmukh
authors.affiliation: Department of Food Engineering & Technology, Institute of Chemical Technology, Mumbai, 400019, India. Electronic address: us.annapure@ictmumbai.edu.in.
authors.forename: U S
authors.initials: US
authors.lastname: Annapure
mesh_terms: D000688:Amylose / Q000737:chemistry*; D012275:Oryza / Q000737:chemistry*; D058626:Plasma Gases; D013213:Starch / Q000737:chemistry*; D014783:Viscosity
chemical_list: D058626:Plasma Gases; D013213:Starch; D000688:Amylose
keywords: Cold plasma; Cross linking; Depolymerization; Functional properties; Reactive species; Starch