title: Development of NIRS models to predict protein and amylose content of brown rice and proximate compositions of rice bran.
abstract: With the escalating persuasion of economic and nutritional importance of rice grain protein and nutritional components of rice bran (RB), NIRS can be an effective tool for high throughput screening in rice breeding programme. Optimization of NIRS is prerequisite for accurate prediction of grain quality parameters. In the present study, 173 brown rice (BR) and 86 RB samples with a wide range of values were used to compare the calibration models generated by different chemometrics for grain protein (GPC) and amylose content (AC) of BR and proximate compositions (protein, crude oil, moisture, ash and fiber content) of RB. Various modified partial least square (mPLSs) models corresponding with the best mathematical treatments were identified for all components. Another set of 29 genotypes derived from the breeding programme were employed for the external validation of these calibration models. High accuracy of all these calibration and prediction models was ensured through pair t-test and correlation regression analysis between reference and predicted values.
authors.affiliation: Div. of Crop Physiology and Biochemistry, Central Rice Research Institute, P.O. Box 753006, Cuttack, Odisha, India. Electronic address: torit.crijaf09@gmail.com.
authors.forename: Torit Baran
authors.initials: TB
authors.lastname: Bagchi
authors.affiliation: Div. of Crop Physiology and Biochemistry, Central Rice Research Institute, P.O. Box 753006, Cuttack, Odisha, India.
authors.forename: Srigopal
authors.initials: S
authors.lastname: Sharma
authors.affiliation: Div. of Crop Improvement, Central Rice Research Institute, P.O. Box 753006, Cuttack, Odisha, India.
authors.forename: Krishnendu
authors.initials: K
authors.lastname: Chattopadhyay
mesh_terms: D000688:Amylose / Q000032:analysis*; D002138:Calibration; D004043:Dietary Fiber / Q000032:analysis; D002523:Edible Grain / Q000737:chemistry*; D016018:Least-Squares Analysis; D012275:Oryza / Q000737:chemistry*; D010940:Plant Proteins / Q000032:analysis*; D019265:Spectroscopy, Near-Infrared
chemical_list: D004043:Dietary Fiber; D010940:Plant Proteins; D000688:Amylose
keywords: Brown rice; Calibration; NIR spectroscopy; Rice bran; Validation