Design of water-soluble whole rice glutelin: The rendezvous of two rice subspecies, Japonica and Indica. (January 2021)

• Record Type: Journal Article
• Authors: He, Chengxin; Hu, Yu; Wang, Yong; Liu, Ziwei; Liao, Yang; Xiong, Hua; Zhao, Qiang
• Is Part Of: Food hydrocolloids. Volume 110(2021)
• Publication Date: 2021-01
• Subjects: Protein-protein interactions -- Rice glutelin -- Japonica rice -- Indica rice; Hydrocolloids -- Periodicals; Food additives -- Periodicals; Colloïdes -- Périodiques; Aliments -- Additifs -- Périodiques; Colloids; Food additives; Periodicals; Electronic journals; 664.06
• DOI: 10.1016/j.foodhyd.2020.106148
• Languages: English
• ISSNs: 0268-005X

Abstract

Abstract: The preparation route of the water-soluble rice glutelin-glutelin (extracted from two subspecies of J aponica and I ndica rice, respectively) system is proposed and tested in laboratory-scale, which can potentially be scaled up for industrial production. The two-components in highly alkaline condition was carefully acidified to neutral to produce whole rice glutelin. The interfacial properties of the system can be adjusted by changing the ratio of rice glutelin origins ( J aponica group (JRG) or I ndica group (IRG)), so that the surface hydrophobicity can be reduced to expose the charged groups. The created protein structure is robust and could maintain desirable wettability after single droplet drying and freeze-drying. To date, the application of plant proteins has been largely limited by the poor solubility of hydrophobic aggregates. The proposed JRG-IRG system is a crucial step toward aqueous rice protein materials. The potential to prepare aqueous composites was also demonstrated by synergistic modification of plant proteins from different subspecies. Graphical abstract: Image 1 Highlights: Hydrocolloid was prepared using rice glutelin extracted from two subspecies. The only stoichiometric side products of this reaction are NaCl and H2 O. The solubility of rice glutelin-glutelin increased from 3.7% to 90.2%. This glutelin-glutelin can still be rehydrated after spray drying or freeze-dried.