Total and individual carotenoid profiles in Solanum phureja cultivated potatoes: II. Development and application of near-infrared reflectance spectroscopy (NIRS) calibrations for germplasm characterization

被引:42
作者
Bonierbale, Merideth [1 ]
Grueneberg, Wolfgang [1 ]
Amoros, Walter [1 ]
Burgos, Gabriela [1 ]
Salas, Elisa [1 ]
Porras, Eduardo [1 ]
zum Felde, Thomas [1 ]
机构
[1] Int Potato Ctr CIP, Lima 12, Peru
关键词
Potato; Potato cultivars; Solanum phureja; Biodiversity; Carotenoids; NIRS; Food analysis; Food composition; MAIZE;
D O I
10.1016/j.jfca.2008.08.009
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Calibration equations to estimate total and individual carotenoid concentrations by near-infrared reflectance spectroscopy (NIRS) in Solarium phureja potato germplasm were developed, validated and applied to the characterization of 152 S. phureja germplasm accessions. The cross, external and independent validation of the calibrations indicate that total carotenoids and zeaxanthin concentrations can be estimated by NIRS with high accuracy and that NIRS can be used to differentiate accessions with low, medium and high concentrations of violaxanthin, antheraxanthin, lutein or beta-carotene. Significant variability was revealed for total and all individual carotenoids measured. Two varieties with significant zeaxanthin concentrations (above 1000 mu g 100 g(-1) FW) and a group of 43 accessions with relatively high beta-carotene concentrations (above 10 mu g 100 g(-1) FW) were identified. The positive relation between total carotenoids and zeaxanthin as well as their negative relation with beta-carotene reported for 23 accessions in the companion manuscript was upheld. The use of NIRS in estimating and characterizing a large germplasm collection has permitted the identification of accessions with high total carotenoids and zeaxanthin and relatively high beta-carotene concentrations at low cost and in reduced time compared to HPLC. This can be applied to documentation of descriptive and potentially beneficial characteristics of potato genebank materials, the assessment of the food value of present varieties, and the selection of parents in a breeding program oriented to nutritional enhancement of potato. (C) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码:509 / 516
页数:8
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