Variability in antioxidants in yellow, white, and red coloured maize grain in response to different fertilizers
Author:
Dragicevic Vesna1ORCID, Simic Milena1ORCID, Tolimir Miodrag1ORCID, Djuric Nenad2ORCID, Senk Milena1ORCID, Stankovic Goran1ORCID, Brankov Milan1ORCID
Affiliation:
1. Maize Research Institute “Zemun Polje”, Zemun Polje, Belgrade, Serbia 2. Megatrend University, Faculty of Biofarming, Bačka Topola, Serbia
Abstract
Maize (Zea mays L.) grain is an important source of nutrients in human diet.
The differences in content and relations between certain components of maize
grain impact grain colour and its nutritional quality. The objective of the
Study was to examine effects of different fertilization systems: mineral
fertilizer (urea), organic fertilizer, and bio-fertilizer on white, yellow,
and red coloured maize hybrids, regarding grain yield and variations in
content of antioxidants: phytate, phenolic compounds, glutathione,
carotenoids (yellow pigment), and reduction capacity of DPPH radical.
Two-fold higher average grain yield and double fold lower concentration of
phenols and carotenoids were present in 2018, in comparison to drier 2017.
The lowest phytate content and the highest values of phenols and DPPH
reduction capacity were present in red maize kernel, as a hybrid with the
highest yield, while in yellow maize kernel, the highest values of yellow
pigment and glutathione occurred. The bio-fertilizer expressed the positive
impact on reduction of phytate concentration and increase of phenols
concentration in maize grain, while urea increased concentration of yellow
pigment and glutathione. Correlation analysis showed that reduction in
phytate and carotenoids was significant and positive related with grain
yield increase, while phenols showed positive correlation with reduction
capacity of DPPH radical. Thus, it was shown that changes in fertilization
methods could affect antioxidants status in maize grain, particularly in red
coloured maize, which besides high yield potential, possess remarkable
higher antioxidant capacity in regard to yellow and white coloured maize.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
Plant Science,Genetics
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