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Pregled bibliografske jedinice broj: 1081465

The composition of floury and vitreous endosperm affects starch digestibility kinetics of the whole maize kernel


Zurak, Dora; Kljak, Kristina; Grbeša, Darko
The composition of floury and vitreous endosperm affects starch digestibility kinetics of the whole maize kernel // Journal of cereal science, 95 (2020), 103079, 6 doi:10.1016/j.jcs.2020.103079 (međunarodna recenzija, članak, znanstveni)


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Naslov
The composition of floury and vitreous endosperm affects starch digestibility kinetics of the whole maize kernel

Autori
Zurak, Dora ; Kljak, Kristina ; Grbeša, Darko

Izvornik
Journal of cereal science (0733-5210) 95 (2020); 103079, 6

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
maize ; endosperm ; starch digestibility rate

Sažetak
Maize grain starch is the major energy source in animal nutrition, and its high digestion and utilization largely depend on endosperm traits and the structure of the starch-lipoprotein matrix. The aim of this work was to determine floury and vitreous endosperm traits and its relation to starch digestibility rate. In total, kernels of 30 hybrids were manually dissected, and amylose, total zein and starch and non-starch lipids were determined in both vitreous and floury endosperm. Starch digestibility of the whole kernel was determined based on glucose released during a two-step in vitro pig model of enzymatic digestion, and starch digestibility rate was calculated according to the first-order kinetics. The vitreous endosperm of tested hybrids had higher contents of amylose (204.6 vs 190.4 g/kg), zein (63.2 vs 40.4 k/kg) and starch lipids (5.6 vs 4.9 g/kg), and lower content of non-starch lipids (7.3 vs 9.6 g/kg) than floury endosperm. Digestibility coefficients varied among hybrids, and starch digestibility rate varied from 0.73 to 1.63 1/h. Lipids in both vitreous and floury endosperm negatively correlated with the most of digestion coefficients, whereas zein correlated in vitreous and amylose in the floury endosperm (P < 0.05). Starch digestibility rate negatively correlated with all traits, except amylose content in vitreous endosperm. As a result, a linear regression model with four variables including contents of zein and starch lipids in vitreous and zein and amylose in floury endosperm can predict more than 65% variability of starch digestibility rate of tested hybrids.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)



POVEZANOST RADA


Ustanove:
Agronomski fakultet, Zagreb

Profili:

Avatar Url Darko Grbeša (autor)

Avatar Url Kristina Kljak (autor)

Avatar Url Dora Zurak (autor)

Poveznice na cjeloviti tekst rada:

doi www.sciencedirect.com

Citiraj ovu publikaciju:

Zurak, Dora; Kljak, Kristina; Grbeša, Darko
The composition of floury and vitreous endosperm affects starch digestibility kinetics of the whole maize kernel // Journal of cereal science, 95 (2020), 103079, 6 doi:10.1016/j.jcs.2020.103079 (međunarodna recenzija, članak, znanstveni)
Zurak, D., Kljak, K. & Grbeša, D. (2020) The composition of floury and vitreous endosperm affects starch digestibility kinetics of the whole maize kernel. Journal of cereal science, 95, 103079, 6 doi:10.1016/j.jcs.2020.103079.
@article{article, author = {Zurak, Dora and Kljak, Kristina and Grbe\v{s}a, Darko}, year = {2020}, pages = {6}, DOI = {10.1016/j.jcs.2020.103079}, chapter = {103079}, keywords = {maize, endosperm, starch digestibility rate}, journal = {Journal of cereal science}, doi = {10.1016/j.jcs.2020.103079}, volume = {95}, issn = {0733-5210}, title = {The composition of floury and vitreous endosperm affects starch digestibility kinetics of the whole maize kernel}, keyword = {maize, endosperm, starch digestibility rate}, chapternumber = {103079} }
@article{article, author = {Zurak, Dora and Kljak, Kristina and Grbe\v{s}a, Darko}, year = {2020}, pages = {6}, DOI = {10.1016/j.jcs.2020.103079}, chapter = {103079}, keywords = {maize, endosperm, starch digestibility rate}, journal = {Journal of cereal science}, doi = {10.1016/j.jcs.2020.103079}, volume = {95}, issn = {0733-5210}, title = {The composition of floury and vitreous endosperm affects starch digestibility kinetics of the whole maize kernel}, keyword = {maize, endosperm, starch digestibility rate}, chapternumber = {103079} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati:





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