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Linoleic Acid:Dihomo-γ-Linolenic Acid Ratio Predicts the Efficacy of Zn-Biofortified Wheat in Chicken (Gallus Gallus)

Linoleic Acid:Dihomo-γ-Linolenic Acid Ratio Predicts the Efficacy of Zn-Biofortified Wheat in Chicken (Gallus Gallus)

Marija Knez, Elad Tako, Raymond P Glahn, Nikolai Kolba, Emma de Courcy-Ireland, James C R Stangoulis

J Agric Food Chem. 2018 Feb 14;66(6):1394-1400.

PMID: 29359556

Abstract:

The amount of Zn absorbed from Zn-biofortified wheat material has been determined using an in vivo model of Zn absorption. The erythrocyte linoleic:dihomo -γ-linolenic acid (LA:DGLA) ratio was used as a biomarker of Zn status. Two groups of chickens (n = 15) were fed different diets: a high-Zn (46.5 μg Zn g-1) and a low-Zn wheat-based diet (32.8 μg Zn g-1). Dietary Zn intakes, body weight, serum Zn, and the erythrocyte fatty acid profile were measured, and tissues were taken for gene expression analysis. Serum Zn concentrations were greater in the high Zn group (p < 0.05). Duodenal mRNA expression of various Zn transporters demonstrated expression upregulation in the birds fed a low Zn diet (n = 15, p < 0.05). The LA:DGLA ratio was higher in the birds fed the low Zn diet (p < 0.05). The higher amount of Zn in the biofortified wheat resulted in a greater Zn uptake.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP506263	γ-Linolenic acid		506-26-3	Price

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