Ruminal and post‐ruminal barley grain digestion and starch granule morphology under three heat methods

This study was designed to investigate the effect of three heating methods on the ruminal and post‐ruminal nutrient degradability and starch granule morphology of barley grain (BG ‐ Hordeum vulgare). Treatments were Control (CG): without processing; Roasted (RG): roasted BG for 300 s at 130°C; Micro...

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Bibliographic Details
Published in:Annals of applied biology 2021-05, Vol.178 (3), p.508-518
Main Authors: Shirmohammadi, Shahram, Taghizadeh, Akbar, Hosseinkhani, Ali, Moghaddam, Gholam Ali, Salem, Abdelfattah Z. M., Pliego, Alberto Barbabosa
Format: Article
Language:English
Subjects:
Barley
Degradability
Degradation
Digestibility
Dry matter
Field emission microscopy
Gas production
Grain
Granular materials
heat methods
Hordeum vulgare
Morphology
Oil and gas production
Scanning electron microscopy
Starch
Steam flow
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Summary:This study was designed to investigate the effect of three heating methods on the ruminal and post‐ruminal nutrient degradability and starch granule morphology of barley grain (BG ‐ Hordeum vulgare). Treatments were Control (CG): without processing; Roasted (RG): roasted BG for 300 s at 130°C; Microwaved (MG): irradiated BG for 120 s at 1200 W; and Steam flaked (SG): BG misted for 30 min under steam flow of boiling water and flaked. Gas production and in situ techniques were used to evaluate the ruminal degradability of treatments, and a modified three‐step method was utilised to estimate the total‐tract digestibility. Morphological changes of starch granules were determined by field emission scanning electron microscopy (FESEM). Ruminal gas production and dry matter disappearance were increased (p < .05) in SG vs. CG. Heat processing had different effects on starch and crude protein degradability; however, starch degradability increased (p 
ISSN:0003-4746
1744-7348
DOI:10.1111/aab.12662