Journal
FOOD CHEMISTRY
Volume 212, Issue -, Pages 427-433Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.05.189
Keywords
Agronomic biofortification; Foliar fertilization; Phytic acid; Zinc deficiency; Zinc fertilizers
Funding
- Ministry of Education, Culture and Sport of Spain
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To evaluate the potential of cooked field peas to be used in Zn biofortification programs, all combinations of soil Zn application of 0, 4 and 8 mg ZnSO4 center dot 7H(2)O kg(-1) and foliar Zn application of 0 and two sprays of 0.25% or 0.5% (w/v) ZnSO4 center dot 7H(2)O before flowering and at early grain-filling stage were tested. Soil Zn application increased Zn-DTPA concentration 3.7- to 5.6-times depending on the Zn soil treatments. Grain Zn concentrations higher than 60 mg Zn kg(-1) were obtained with all foliar Zn applications, alone or in combination with soil Zn applications, and grain Zn bioavailability was adequate (phytate: Zn ratios lower than 15). Processing (freezing and cooking) caused a decrease of about 30% in grain Zn concentration and a 17%- increase in phytate: Zn ratios (to <= 9.5). The combined application of 8 mg ZnSO4 center dot 7H(2)O kg(-1) soil + 0.25% (w/v) ZnSO4 center dot 7H(2)O foliarly could be a good option for biofortifying field peas. (C) 2016 Elsevier Ltd. All rights reserved.
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