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Physical properties of rough and brown rice of Japonica, Indica and NERICA types

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Title: Physical properties of rough and brown rice of Japonica, Indica and NERICA types
Authors: Olivares, Díaz Edenio Browse this author
Kawamura, Shuso Browse this author →KAKEN DB
Koseki, Shigenobu Browse this author
Keywords: NERICA rice
Indica rice
Japonica rice
physical properties of rice
thickness fraction
processing levels
Issue Date: May-2015
Publisher: CIGR
Journal Title: Agricultural Engineering International: CIGR Journal
Volume: 2015
Issue: Special Issue: 18th World Congress of CIGR
Start Page: 274
End Page: 285
Abstract: This research involved a study of the physical properties of rough and brown rice of various types. The effect of kernel thickness on physical properties was analyzed. Fundamental physical properties, such as dimensions, mass, and frictional characteristics, were measured for different fractions of rough and brown rice of seven different varieties: Nanatsuboshi, Yumepirika, Oborozuki (Japonica type), IR-28, IR-50, IR-64 (Indica type), and NERICA-4 (NERICA type). Results showed that, in both rough and brown rice, the physical properties of the NERICA type showed a closer relationship with the Indica type than they did with the Japonica type. Moreover, statistical analysis indicated that the physical properties were affected by kernel thickness within each variety of rough and brown rice, information that could be helpful in designing facilities and machines required for rice processing and storage.
Rights: Open access at
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 川村 周三

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