Improving the screening of potato breeding lines for specific nutritional traits using portable mid-infrared spectroscopy and multivariate analysis.
Efficient selection of potato varieties with enhanced nutritional quality requires simple, accurate and cost effective assays to obtain tuber chemical composition information. In this study, 75 Andean native potato samples from 7 Solanum species with different colors were characterized and quantified for their anthocyanin, phenolics and sugar content using traditional reference methods. IR (infrared) spectra of potato extracts were collected using a portable infrared system and partial least squares regression (PLSR) calibration models were developed. These models were validated using both full cross-validation and an independent sample set giving strong linear correlation coefficients of prediction (rPred)>0.91 and standard error of prediction (SEP) of 24mg/100g phenolics, 7mg/100g monomeric anthocyanins, 0.1g/100g reducing sugars and 0.12g/100g sucrose. Overall, portable infrared system with PLSR showed great potential to facilitate potato breeding and certain aspects of crop management, material selection for potato processing and related research by providing alternative prediction models.
Department of Food Engineering, Canakkale Onsekiz Mart University, Canakkale 17020, Turkey.
Huseyin
H
Ayvaz
Department of Food Engineering, Osmaniye Korkut Ata University, Osmaniye 80000, Turkey.
Adnan
A
Bozdogan
Department of Food Science and Technology, The Ohio State University, 110 Parker Food Science and Technology Building, 2015 Fyffe Road, Columbus, OH 43210, United States.
M Monica
MM
Giusti
Department of Food Engineering, Ondokuz Mayis University, Samsun 55139, Turkey.
Mustafa
M
Mortas
International Potato Center (CIP), Av. La Molina 1895, Apartado 1558, Lima 12, Peru.
Rene
R
Gomez
Department of Food Science and Technology, The Ohio State University, 110 Parker Food Science and Technology Building, 2015 Fyffe Road, Columbus, OH 43210, United States. Electronic address: rodriguez-saona.1@osu.edu.
Luis E
LE
Rodriguez-Saona
D000872:Anthocyanins / Q000032:analysis; D002241:Carbohydrates / Q000032:analysis; D015999:Multivariate Analysis; D009753:Nutritive Value / Q000235:genetics; D010636:Phenols / Q000032:analysis; D000069600:Plant Breeding / Q000379:methods*; D010936:Plant Extracts / Q000032:analysis* / Q000235:genetics; D035281:Plant Tubers / Q000737:chemistry; D011198:Solanum tuberosum / Q000737:chemistry* / Q000235:genetics; D052616:Solid Phase Extraction / Q000379:methods*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D013395:Sucrose / Q000032:analysis
D000872:Anthocyanins; D002241:Carbohydrates; D010636:Phenols; D010936:Plant Extracts; D013395:Sucrose
Andean potatoes; Anthocyanins; FTIR; Phenolics; Portable spectrometers; Sugars