Wheat Bran: Composition and Digestibility

Saunders, Robert M.

doi:10.1007/978-1-4684-2481-2_2

Cited by 10 publications

(6 citation statements)

References 26 publications

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“…Based on literature data (Caprez et al 1986;Saunders 1978) and presented results, noticeable difference between WB and other applied biofillers results from the presence of proteins, which was confirmed by a high content of nitrogen. Furthermore, wheat bran was characterized by higher content of macro-and microelements, which could enhance activity of enzymes and microorganisms during biodegradation of biocomposites (Tomaszewska-Ciosk et al 2013).…”

Section: Characteristics Of Cellulosic Fillerssupporting

confidence: 61%

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Processing and structure–property relationships of natural rubber/wheat bran biocomposites

et al. 2016

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In this work, wheat bran was used as cellulosic filler in biocomposites based on natural rubber. The impact of wheat bran content [ranging from 10 to 50 parts per hundred rubber (phr)] on processing, structure, dynamic mechanical properties, thermal properties, physico-mechanical properties and morphology of resulting biocomposites was investigated. For better characterization of interfacial interactions between natural rubber and wheat bran, achieved results were compared with properties of biocomposites filled with commercially available cellulosic fillers-wood flour and microcellulose. It was observed that wheat bran, unlike commercial cellulosic fillers, contains high amount of proteins, which act like plasticizers having profitable impact on processing, physical, thermo-mechanical and morphological properties of biocomposites. This is due to better dispersion and distribution of wheat bran particles in natural rubber, which results in reduction of stiffness and porosity of the biocomposites. Regardless of cellulosic filler type, Wolff activity coefficient was positive for all studied biocomposites implying reinforcing effect of the applied fillers, while tensile strength and elongation at break decreased with increasing filler content. This phenomenon is related to restricted strain-induced crystallization of NR matrix due to limited mobility of polymer chains in the biocomposites. Furthermore, this explains negligible impact of particle size distribution, chemical composition and crystallinity degree of applied cellulosic filler on static mechanical properties of highlyfilled NR biocomposites. The conducted investigations show that wheat bran presents interesting alternative for commercially available cellulosic fillers and could be successfully applied as a low-cost filler in polymer composites.

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Section: Characteristics Of Cellulosic Fillerssupporting

confidence: 61%

“…Curing characteristics were investigated according to ISO 3417 at 150°C, using Monsanto R100S Saunders (1978) b According to Caprez et al (1986) Cellulose ( 2016) 23:3157-3175 3159 rheometer with oscillating rotor (USA). The rotor oscillation angle was 1°, while torque ranged between 0 and 100 dNm.…”

Section: Measurementsmentioning

confidence: 99%

Processing and structure–property relationships of natural rubber/wheat bran biocomposites

et al. 2016

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“…Crude fibre analysis underestimates the real dietary fibre content, because hemicelluloses, for example are determined only to a small extent (Van Soest & McQueen, 1973). Wheat bran contains up to 56% dietary fibre (Hellendoorn, Noordhoff & Slagman, 1975), but only 6·8 to 17·5% crude fibre (Saunders, 1978).…”

Section: Trialsmentioning

confidence: 99%

Effects of fibre on digestibility and passage time in Callithricidae

Krombach¹,

Flurer

Zücker

1984

Lab Anim

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275 SummaryThe effects of fibre in a pelleted diet on food intake, digestibility of crude fibre, dry matter and energy, on passage time and consistency of faeces were studied in 2 species of Callithricidae, Ca/lilhrix jacchus and Saguinus juscicollis. Coarse cellulose, microcellulose, wheat bran and shrimp meal (chitin = crude fibre) were tested in diets containing 2, 4 and 6% total crude fibre, respectively. Digestibility and passage time were determined by inclusion of 0'5% Cr203 in the diet.Both celluloses had little influence on the digestibility of energy and dry matter. Digestibility of crude fibre was very low. Wheat bran led to evident depression of energy and dry matter digestibility. High digestibility of crude fibre occurred at the higher levels of inclusion in the diet. Shrimp meal was highly digested with little innuence on digestibility of energy and dry matter, indicating considerable degradation of chitin. Wheat bran showed a marked effect, while microcellulose had no effect on passage time, consistency and volume of faeces.

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“…In terms of the A/X ratio, which is an indication of the degree of arabinose substitution on the xylan backbone, the values for the destarched brans were similar for rye (0.64) and wheat (0.62) but slightly lower for barley (0.50), initially suggesting that rye and wheat AXs were more substituted . The original cereal brans were also rich in proteins, containing around 120–179 mg g –1 . The protein content decreased after the destarching treatment, which indicated removal of soluble proteins, probably those in close association with the residual starch from the endosperm.…”

Section: Results and Discussionmentioning

confidence: 99%

Comparative Recalcitrance and Extractability of Cell Wall Polysaccharides from Cereal (Wheat, Rye, and Barley) Brans Using Subcritical Water

Ruthes

Rudjito

Rencoret

et al. 2020

ACS Sustainable Chem. Eng.

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Cereal brans constitute an unexploited source of valuable cell wall polysaccharides and phenolics. Sequential subcritical water extraction (SWE) of wheat, barley, and rye bran enables the isolation of cell wall polysaccharides with targeted molecular structures. The extracts switched from glucan-rich to higher contents of feruloylated arabinoxylan (F-AX) with extraction time, resulting in significant radical scavenging activity. Structurally, wheat and rye F-AXs exhibited mostly single C(O)-3 arabinose substitutions, whereas barley bran F-AX showed a complex substitution pattern. The recalcitrance of the insoluble residues after SWE was revealed by the enrichment of F-AX populations with disubstituted arabinose units and the presence of hydroxycinnamic acids, lignin, and proteins. This study demonstrates the versatility of SWE to extract cell wall polysaccharides from cereal brans with tailored molecular structures and radical scavenging activity for potential use in food and biomedical applications.

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Wheat Bran: Composition and Digestibility

Cited by 10 publications

References 26 publications

Processing and structure–property relationships of natural rubber/wheat bran biocomposites

Processing and structure–property relationships of natural rubber/wheat bran biocomposites

Effects of fibre on digestibility and passage time in Callithricidae

Comparative Recalcitrance and Extractability of Cell Wall Polysaccharides from Cereal (Wheat, Rye, and Barley) Brans Using Subcritical Water

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