The Structures and Architectures of Plant Cell Walls Define Dietary Fibre Composition and the Textures of Foods

Peña, María J.; Vergara, Claudia E.; Carpita, Nicholas C.

doi:10.1002/9780470999615.ch5

Cited by 6 publications

(8 citation statements)

References 55 publications

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“…Useful overviews of plant cell wall composition and structure in relation to food quality have been presented by Peña, Vergara, and Carpita (2001) and Waldron, Parker, and Smith (2003); these overviews are the source of the polysaccharide structure information that follows below. The plant cell wall material of dicotyledons (including pulses) is mainly composed of three major categories of polysaccharides: cellulose, hemicelluloses, and pectins.…”

Section: Composition and Structure Of Cell Wall Materialsmentioning

confidence: 99%

“…Cooking and thermal processing result in a softening of plant tissues, due in part to the degradation of pectic polysaccharides that are involved in cell to cell adhesion in the middle lamella of the cell walls (Peña et al, 2001). Marconi et al (2000) demonstrated that cooking, both conventional (boiling) and microwave (in sealed containers), did not alter the total non-starch polysaccharide content of beans and chickpeas compared to the raw legumes, but both processes resulted in increases in the soluble fibre fraction and decreases in the insoluble fraction.…”

Section: Insoluble and Soluble Dietary Fibresmentioning

confidence: 99%

See 1 more Smart Citation

Dietary fibres in pulse seeds and fractions: Characterization, functional attributes, and applications

Tosh

Yada

2010

Food Research International

433

246

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Section: Composition and Structure Of Cell Wall Materialsmentioning

confidence: 99%

Section: Insoluble and Soluble Dietary Fibresmentioning

confidence: 99%

Dietary fibres in pulse seeds and fractions: Characterization, functional attributes, and applications

Tosh

Yada

2010

Food Research International

433

246

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“…Type II primary cell walls are found in cereals and grasses and contain a high proportion of cellulose and the hemicelluloses arabinoxylan and mixed-linkage β -glucan, but they contain only negligible amounts of pectic polysaccharides and proteins. Despite numerous attempts to define structural models of plant cell walls, the details of their molecular architecture are not yet fully understood ( 101 ) , although the composition and structure of individual cell wall polysaccharides constituting many plants tissues are relatively well known ( 5 , 107 ) . However, notwithstanding the significant development in advanced technology (e.g.…”

Section: Dietary Fibre Sources Structures and Propertiesmentioning

confidence: 99%

“…Details about the chemical characteristics of dietary fibre, particularly the composition and structural architecture of the cell wall matrix can be found elsewhere ( 31 , 100 , 101 , 105 ) . In brief, cell walls of many edible plant tissues are made up of three main types of polysaccharides – cellulose, hemicelluloses and pectins.…”

Section: Dietary Fibre Sources Structures and Propertiesmentioning

confidence: 99%

Re-evaluation of the mechanisms of dietary fibre and implications for macronutrient bioaccessibility, digestion and postprandial metabolism

et al. 2016

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The positive effects of dietary fibre on health are now widely recognised; however, our understanding of the mechanisms involved in producing such benefits remains unclear. There are even uncertainties about how dietary fibre in plant foods should be defined and analysed. This review attempts to clarify the confusion regarding the mechanisms of action of dietary fibre and deals with current knowledge on the wide variety of dietary fibre materials, comprising mainly of NSP that are not digested by enzymes of the gastrointestinal (GI) tract. These non-digestible materials range from intact cell walls of plant tissues to individual polysaccharide solutions often used in mechanistic studies. We discuss how the structure and properties of fibre are affected during food processing and how this can impact on nutrient digestibility. Dietary fibre can have multiple effects on GI function, including GI transit time and increased digesta viscosity, thereby affecting flow and mixing behaviour. Moreover, cell wall encapsulation influences macronutrient digestibility through limited access to digestive enzymes and/or substrate and product release. Moreover, encapsulation of starch can limit the extent of gelatinisation during hydrothermal processing of plant foods. Emphasis is placed on the effects of diverse forms of fibre on rates and extents of starch and lipid digestion, and how it is important that a better understanding of such interactions with respect to the physiology and biochemistry of digestion is needed. In conclusion, we point to areas of further investigation that are expected to contribute to realisation of the full potential of dietary fibre on health and well-being of humans.

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“…Cellulose microfibrils are cross-linked by glycans (e.g. xyloglucan, glucuronoarabinoxylan, galactomannan, mannan) (Carpita and Gibeaut 1993;Peña et al 2008). The interlocked network of microfibrils and glycans is further embedded in a matrix of pectic substances and reinforced with structural aromatic substances (e.g.…”

Section: (3) At Microfibril Levelmentioning

confidence: 99%

Targeted pre-treatment of hemp bast fibres for optimal performance in biocomposite materials: A review

Liu

Thygesen

Summerscales

et al. 2017

Industrial Crops and Products

160

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Global interest in the use of plant fibres in natural fibre reinforced composites (NFCs) is growing rapidly. The increased interest is primarily due to the advantageous properties of natural fibres including biodegradability, low cost, low density and high stiffness and strength to weight ratio. In order to achieve strong NFCs, well separated and celluloserich fibres are required. Hemp is taking a center stage in this regard as a source of suitable natural plant cellulose fibres because natural hemp bast fibres are long and inherently possess high strength. Classical field and water retting methods have been used for centuries for removal of non-cellulosic components from fibrous plant stems including from hemp, but carries a risk of reducing the mechanical properties of the fibres via damaging the cellulose. For NFCs new targeted fibre pre-treatment methods are needed to selectively and effectively remove non-cellulosic components from the plant fibres and for producing cellulose rich fibres without introducing any damage to the fibres. A key feature for successful use of natural fibres such as hemp fibres in composite materials is optimal interfacial contact between the fibres and the hydrophobic composite matrix material. Targeted modification of natural fibres for NFCs must also be targeted to optimize the fibre surface properties. Consequently, improved interfacial bonding between fibres and hydrophobic polymers, reduced moisture uptake, increased microbial degradation resistance, and prolonged durability of NFCs can be achieved. This review, using hemp bast fibres as an example, critically and comprehensively assesses the targeted pretreatment technologies and data available for producing well separated cellulose bast fibres having optimal chemical and physical properties for maximizing the mechanical performance and durability of NFCs.

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The Structures and Architectures of Plant Cell Walls Define Dietary Fibre Composition and the Textures of Foods

Cited by 6 publications

References 55 publications

Dietary fibres in pulse seeds and fractions: Characterization, functional attributes, and applications

Dietary fibres in pulse seeds and fractions: Characterization, functional attributes, and applications

Re-evaluation of the mechanisms of dietary fibre and implications for macronutrient bioaccessibility, digestion and postprandial metabolism

Targeted pre-treatment of hemp bast fibres for optimal performance in biocomposite materials: A review

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