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. 2024 Jun;104(8):4801-4807.
doi: 10.1002/jsfa.12800. Epub 2023 Jul 12.

Development of NIRS calibration curves for sugars in baked sweetpotato

Victor A Amankwaah  1   2 , Sharon Williamson  2 , Rong Reynolds  3 , Ragy Ibrahem  2 , Kenneth V Pecota  2 , Xiaofei Zhang  4 , Bode A Olukolu  5 , Van-Den Truong  3 , Edward Carey  6 , Thomas Zum Felde  7 , Reuben Ssali  8 , George Craig Yencho  2
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Development of NIRS calibration curves for sugars in baked sweetpotato

Victor A Amankwaah et al. J Sci Food Agric. 2024 Jun.

Abstract

Background: Variability in sugar content between raw and cooked sweetpotato storage roots impact nutritional and dietary importance with implications for consumer preference. High-throughput phenotyping is required to breed varieties that satisfy consumer preferences.

Results: Near-infrared reflectance spectroscopy (NIRS) calibration curves were developed for analysing sugars in baked storage roots using 147 genotypes from a population segregating for sugar content and other traits. The NIRS prediction curves had high coefficients of determination in calibration (R2 c) of 0.96 (glucose), 0.93 (fructose), 0.96 (sucrose), and 0.96 (maltose). The corresponding coefficients of determination for cross-validation (R2 cv) were 0.92 (glucose), 0.89 (fructose), 0.96 (sucrose) and 0.93 (maltose) and were similar to the R2 c for all sugars measured. The ratios of the standard deviation of the reference set to the standard error of cross-validation were greater than three for all sugars. These results confirm the applicability of the NIRS curves in efficiently determining sugar content in baked sweetpotato storage roots. External validation was performed on an additional 70 genotypes. Coefficients of determination (r2) were 0.88 (glucose), 0.88 (fructose), 0.86 (sucrose) and 0.49 (maltose). The results were comparable to those found for the calibration and cross-validation in fructose, glucose, and sucrose, but were moderate for maltose due to the low variability of maltose content in the population.

Conclusions: NIRS can be used for screening sugar content in baked sweetpotato storage roots in breeding programs and can be used to assist with the development of improved sweetpotato varieties that better meet consumer preferences. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Keywords: NIRS; consumer preferences; high‐throughput phenotyping; nutritional quality; storage root; sweetpotato storage roots.

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REFERENCES

    1. Low JW, Mwanga ROM, Andrade M, Carey E and Ball AM, Tackling vitamin a deficiency with biofortified sweetpotato in sub‐Saharan Africa. Glob Food Sec 14:23–30 (2017).
    1. de Moura FF, Miloff A and Boy E, Retention of provitamin a carotenoids in staple crops targeted for biofortification in Africa: cassava, maize and sweet potato. Crit Rev Food Sci Nutr 55:1246–1269 (2015).
    1. Katayama K, Kobayashi A, Sakai T, Kuranouchi T and Kai Y, Recent progress in sweetpotato breeding and cultivars for diverse applications in Japan. Breed Sci 67:3–14 (2017).
    1. Tanaka M, Ishiguro K, Oki T and Okuno S, Functional components in sweetpotato and their genetic improvement. Breed Sci. 67:52–61 (2017).
    1. Opara UL and Parthare PB, Bruise damage measurement and analysis of fresh horticultural produce. Postharvest Biol Technol 91:9–24 (2014).

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