Influence of water content and negative temperatures on the mechanical properties of wheat bran and its constitutive layers

Hémery, Youna; Mabille, Frédéric; Martelli, M.; Rouau, Xavier

doi:10.1016/j.jfoodeng.2010.01.012

Cited by 40 publications

(35 citation statements)

References 32 publications

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“…As regards to the aleurone layer cohesion, a significant increase of the MgII/MgI ratio was observed after grain humidification and after the soaking stage, regardless of the cultivars ( Table 2). The isolated tissues stored at 53% and 84% of relative humidity showed the same values of MgII/MgI ratio in agreement with Hemery et al 22 , who have shown humidity effect on W only for higher relative humidity gradient. Our results suggest that physicochemical modification occurred mainly during the aleurone layer preparation.…”

Section: Application Of Libs Analysis To Estimate the Cohesion Of Whesupporting

confidence: 90%

“…Similar trends were observed on similar tissues from the same wheat cultivars but dissected on the radial orientation. 22 However, the radially sampled tissues were less extensible (8% of strain) than the longitudinal ones, even for aleurone layer that is considered as isotropic. 22 Aleurone layers were further treated with an oxidative treatment using AP.…”

Section: Ionization Effectiveness Vs Mechanical Properties Of Isolatmentioning

confidence: 99%

“…22 However, the radially sampled tissues were less extensible (8% of strain) than the longitudinal ones, even for aleurone layer that is considered as isotropic. 22 Aleurone layers were further treated with an oxidative treatment using AP. Such treatment was used in order to favor diffusion of reactive moieties.…”

Section: Ionization Effectiveness Vs Mechanical Properties Of Isolatmentioning

confidence: 99%

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Estimation of Wheat Grain Tissue Cohesion via Laser Induced Breakdown Spectroscopy

Martelli

Brygo²,

Delaporte³

et al. 2011

Food Biophysics

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During the wheat milling process, the bran fractionation is related to its mechanical properties, which are measured using tensile tests on hand-isolated tissues. However, the dissection of wheat tissues implies a soaking stage in water that can modify tissue properties. New methodologies are required to evaluate wheat tissue properties directly on native grains. The aim of this work was to estimate wheat grain tissue cohesion by the ionization effectiveness via laser-induced breakdown spectroscopy (LIBS) technique. Isolated bran tissues and wheat grains were submitted to LIBS analysis using a pulsed argon fluoride (193 nm, 15 ns, 1 Hz, 2 J cm −2 ) excimer laser and a compact optic fiber spectrometer (HR2000). The first approach was to correlate the ratios of ionic to atomic emission lines (MgII/MgI and CaII/CaI) of isolated tissues to their mechanical measurements. The energy needed to rupture the tissue was correlated to MgII/MgI (R 2 =0.72). Secondly, native grains were irradiated and chemometrics was applied to discriminate tissue spectra. The aleurone layer isolated after the soaking step presented a higher MgII/MgI than the aleurone layer from native grains, indicating a possible water effect on the tissue cohesion. In conclusion, the LIBS technique may be a potential method for rapid structural analysis of vegetal material allowing wheat population screening of both compositional and mechanical properties.

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Section: Application Of Libs Analysis To Estimate the Cohesion Of Whesupporting

confidence: 90%

Section: Ionization Effectiveness Vs Mechanical Properties Of Isolatmentioning

confidence: 99%

Section: Ionization Effectiveness Vs Mechanical Properties Of Isolatmentioning

confidence: 99%

See 1 more Smart Citation

Estimation of Wheat Grain Tissue Cohesion via Laser Induced Breakdown Spectroscopy

Martelli

Brygo²,

Delaporte³

et al. 2011

Food Biophysics

Self Cite

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“…Indeed, tension tests until rupture on hand-isolated tissues showed differences in the mechanical properties of the tissues making up the wheat grain outer layers (Antoine et al, 2003). These properties were found to depend on tissue water content, as expected, but also on temperature (Hemery et al, 2010a). The pericarp layer was found to break differently to the other outer-layer grain tissues at moisture contents below 16%.…”

Section: Accepted Manuscriptsupporting

confidence: 72%

“…Drying and conditioning the raw materials is known to be the simplest. Indeed, moisture content and temperature were found to significantly influence the mechanical properties of isolated tissues (Hemery et al, 2010a) and thus potentially their grinding energy. However, to be efficient, the gain in grinding energy has to superior to drying energy.…”

Section: Pretreatment To Decrease Milling Energy and Enhance Tissue Dmentioning

confidence: 99%

DRY biorefineries: Multiscale modeling studies and innovative processing

Mayer‐Laigle

Barakat

Barron

et al. 2018

Innovative Food Science & Emerging Technologies

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This paper reviews studies on green resource fractionation for two different types of material displaying a lignocellulosic or granular-type structure or a composite of the two. It explains how the identification of specific biochemical or spectral markers helps monitor tissue fate along processing and thus increase our knowledge on material fractionation. The key role of tissue mechanical properties in fracture behavior and the value of characterizing them were highlighted to better understand particle composition and properties. The effect of different modes of mechanical stress and strain during grinding as the main step of fractionation was illustrated. The value of different types of pre-treatment before or at grinding to reduce energy required to fracture and enhance dissociation or compound accessibility was presented. Separation methods based on differences in properties of the generated particles, and particularly innovative developments based on electrostatic sorting, were reviewed.

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New perspective for biorefining cereals

Abécassis

Vries

Rouau

2013

Biofuels Bioprod Bioref

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We present a novel approach for the valorization of cereals as major renewable resources for food, functional molecules, and materials as well as for bioenergy. We use a dual approach matching numerous production options (technology push) with the wide range of requested and needed end‐products in a bio‐based society (market pull or reversed engineering). The approach is based on the enlarged concept of biorefining, taking into account global and local requirements and trends. Hence, on one hand, it focuses on large‐scale, main stream production, thus following traditional supply chain methodologies with additional attention to the utilization of co‐ and by‐products (visualized as branches of a tree). On the other hand, it is centered on value‐added, small‐scale production of a wide range of cereal constituents for a wide range of end‐products (visualized as a complex network). In both cases, the innovation needs and research questions are highlighted in view of the diverse local and global challenges. © 2013 Society of Chemical Industry and John Wiley & Sons, Ltd

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Influence of water content and negative temperatures on the mechanical properties of wheat bran and its constitutive layers

Cited by 40 publications

References 32 publications

Estimation of Wheat Grain Tissue Cohesion via Laser Induced Breakdown Spectroscopy

Estimation of Wheat Grain Tissue Cohesion via Laser Induced Breakdown Spectroscopy

DRY biorefineries: Multiscale modeling studies and innovative processing

New perspective for biorefining cereals

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