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Related Concept Videos

Subcellular Fractionation01:32

Subcellular Fractionation

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The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...
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Partial Fractions01:28

Partial Fractions

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A partial fraction is a component of a rational expression represented as the sum of simpler fractions. When a rational function is expressed as a ratio of two polynomials, it can often be decomposed into a sum of fractions whose denominators are simpler polynomials, typically linear or irreducible quadratic factors. This process is called partial fraction decomposition, and it is used to simplify complex expressions for integration, solving equations, or analysis.Partial fraction decomposition...
232
Mixtures of Gases: Dalton's Law of Partial Pressures and Mole Fractions03:03

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Unless individual gases chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each gas in a mixture exerts the same pressure that it would exert if it were present alone in the container. The pressure exerted by each individual gas in a mixture is called its partial pressure.
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Specific Heat01:16

Specific Heat

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The specific heat capacity of a substance refers to the energy required to increase the temperature of one gram of that substance by one degree Celcius. Specific heat capacity is often represented in calories (cal), grams (g), and degrees Celsius (oC), but can also be expressed in joules (J), kilograms (kg), and Kelvin (K), among other units.
For example, increasing the temperature of one gram of water by 1°C requires one calorie of heat energy and can be written as 1 cal/g-°C, or...
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Integration of Rational Functions Using Partial Fractions01:29

Integration of Rational Functions Using Partial Fractions

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Rational functions are expressions written as the ratio of two polynomials, and their integrals are evaluated by simplifying the integrand into manageable parts. These functions are classified as proper or improper based on the degrees of the numerator and denominator.A rational function is proper when the degree of the numerator is less than the degree of the denominator. In this case, partial fraction decomposition is used to rewrite the function as a sum of simpler rational terms. The...
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Inverse z-Transform by Partial Fraction Expansion01:20

Inverse z-Transform by Partial Fraction Expansion

723
The inverse z-transform is a crucial technique for converting a function from its z-domain representation back to the time domain. One effective method for finding the inverse z-transform is the Partial Fraction Method, which involves decomposing a function into simpler fractions with distinct coefficients. These fractions correspond to known z-transform pairs, facilitating the inverse transformation process.
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Related Experiment Video

Updated: Feb 14, 2026

Film Extrusion of Crambe abyssinica/Wheat Gluten Blends
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Prebiotic Wheat Bran Fractions Induce Specific Microbiota Changes.

Kevin D'hoe1,2,3, Lorenza Conterno4,5, Francesca Fava4

  • 1Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium.

Frontiers in Microbiology
|February 9, 2018
PubMed
Summary

Wheat bran fractions show prebiotic potential, selectively promoting beneficial gut bacteria like Bifidobacterium and Roseburia. Aleurone uniquely supports butyrate producers, offering a targeted approach for gut health.

Keywords:
aleuronefermentationin vitromicrobiomeprebioticwheat bran

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Area of Science:

  • Microbiology
  • Nutritional Science
  • Gastroenterology

Background:

  • Wheat bran fibers positively influence gut microbiota composition and activity.
  • Prebiotic potential of different wheat bran fractions requires further investigation.

Purpose of the Study:

  • To assess the prebiotic potential of aleurone, total, ultrafine, and soluble wheat bran (swb).
  • To evaluate the impact of these fractions on gut microbiota composition and activity.

Main Methods:

  • Fecal slurry anaerobic fermentation experiments were conducted.
  • Amplicon-based community profiling and fluorescent in situ hybridization (FISH) were employed.
  • Analysis of bacterial growth, gas production, and short-chain fatty acid concentrations (butyrate).

Main Results:

  • Fermentation with ultrafine, soluble, and total wheat bran (twb) stimulated Bifidobacterium growth.
  • Aleurone selectively promoted the growth of Dorea and butyrate-producing Roseburia.
  • Soluble bran incubation uniquely increased butyrate concentrations, while all fermentations increased gas production.

Conclusions:

  • Wheat bran fractions exhibit distinct prebiotic effects on gut microbiota.
  • Aleurone demonstrates potential as a prebiotic targeting specific butyrate-producing bacteria.
  • Further research can explore aleurone for targeted gut health interventions.