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Evaluation of wet-milling performance of commercial yellow maize hybrids grown in México and relations with grain physicochemical properties

  • Perla Marysol Uriarte-Aceves
  • Peter Adeoye Sopade
  • Jesús Gabriel Rangel-PerazaEmail author
Original Article

Abstract

The use of commercial maize hybrids is a common practice worldwide because of improved yield potential and agronomic characteristics. However, there is very little information regarding their quality characteristics and industrial potential. In this study, 16 commercial yellow maize hybrids, cultivated in the same location, were evaluated for compositional, physical and wet-milling properties. Grain contents of protein (8.5–12.3%, db), crude fat (3.9–5.7%, db) and starch (69.0–72.8%, db) showed varietal differences that were also reflected in, amongst others, thousand-kernel weight (350–430 g), pericarp (4.5–7.7%, db), thickness (3.9–4.9 mm), flour Hunter b color value (28.0–44.6), and 48-h moisture saturation point (0.33–0.46 (g water absorbed/g sample)). The starch yield from the wet-milling varied from 45.0 to 69.5% (db), with a concomitant recovery (%, db) of 64.2–96.2. These properties were correlated and modeled to predict the starch yield that was highly significantly dependent (r2 > 0.7; P < 0.001) on the protein content and kernel density, with the latter accounting for most of the variations. The results suggest that kernel density would be a good indicator of starch yield, and its evaluation could be useful in screening suitable maize hybrids for wet-milling.

Keywords

Kernel density Proximate composition Wet-milling Starch yield Correlations Models 

Abbreviations

TWt

Test weight

KWt

Thousand-kernel weight

KDen

Kernel density

IWAR

Initial water absorption rate

WAI

Water absorption index at 4 h

WAI2

Water absorption index at 24 h

MSP

Moisture saturation point

Notes

Acknowledgements

The authors thank the Autonomous University of Sinaloa (UAS) and the National Institute for Forestry, Agricultural and Livestock Research (INIFAP) in Culiacán, Sinaloa, México for material support. Author Uriarte-Aceves acknowledges the technical assistance of the UAS Faculty of Chemical and Biological Sciences, particularly the Bioprocesses Laboratory.

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Copyright information

© Association of Food Scientists & Technologists (India) 2019

Authors and Affiliations

  1. 1.Tecnológico Nacional de MéxicoInstituto Tecnológico de CuliacánCuliacánMexico
  2. 2.Department of Food Science and Engineering, School of Agricultural SciencesXichang UniversityXichangChina
  3. 3.Food Process Engineering ConsultantsForest LakeAustralia

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