Relationship between the fracture morphology and energy of brown rice during processing. (November 2022)

• Record Type: Journal Article
• Authors: Yang, Liu; Xiao, Xuan; Wang, Xiaowei; Fan, Yuchao; Luo, Yang; Zhao, Junhua; Song, Shaoyun; Zhang, Yonglin; Pei, Houchang
• Is Part Of: Journal of cereal science. Volume 108(2022)
• Publication Date: 2022-11
• Subjects: Brown rice -- Fracturing behavior -- Fracture energy -- Optical morphology; Grain -- Periodicals; Cereal products -- Periodicals; Céréales -- Périodiques; Produits céréaliers -- Périodiques; Cereal products; Grain; Periodicals; 664.705
• DOI: 10.1016/j.jcs.2022.103576
• Languages: English
• ISSNs: 0733-5210

Abstract

Abstract: During rice processing, grain fracture is a key problem for industrial production, various forces act on brown rice during working, and compression load is a critical factor for grain fracturing. A developed compression tester was built with optical observation to better understand the brown rice fracturing behavior. The relationship between fracture morphology and energy was researched. A fracture energy mathematics model was established. The relationship between fracture energy, force and deformation was analyzed. Test results indicate that brown rice fracture behavior can be divided into three stages: elastic interaction, plastic deformation, mixed fracture. The fracture energy of brown rice is related to the size and degree of core fracture area. Fracture behavior and energy are affected by brown rice moisture content, and fracture energy is positively correlated with cracks. The drying temperature at 75 °C is a turning point in the fracture energy of brown rice. The effect of compression time T is larger than compression velocity on test sample fracture energy. The study provides in-depth analysis for brown rice fracturing mechanism, for revealing the law of grain fracture energy. Graphical abstract: Image 1 Highlights: Brown rice fracture behavior can be divided into three stages: elastic interaction, plastic deformation and mixed fracture. Brown rice fracture energy is determined by size and degree of the core fracture area. Brown rice fracture energy is positively correlated with moisture content. The weight of compression time T on fracture energy is larger than compression velocity.