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Intermediate filaments (IFs) do not undergo spontaneous disassembly. Enzymes, kinases, and phosphatases add and remove phosphates from specific sites to regulate their disassembly. The IF concentration in the cytoplasm also regulates the disassembly. If the concentration crosses a threshold, it activates the protein kinases in the vicinity, allowing the phosphorylation of IFs.
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The intermediate filaments are an essential component of the cytoskeleton. Presently six types of intermediate filament have been identified. Type I and II are acidic and basic keratin proteins. Type III is of mesodermal origin and comprises four proteins: vimentin, desmin, glial fibrillary acidic protein (GFAP), and peripherin. Vimentin is commonly found in mesenchymal cells, desmin in muscle cells, GFAP in astrocytes, while peripherin is found in peripheral nervous system neurons (PNS). Type...
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Formation of Intermediate Filaments00:57

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Intermediate filaments are cytoskeletal proteins with higher tensile strength and flexibility than microfilaments and microtubules. Unlike the other two cytoskeletal proteins, intermediate filament formation lacks the enzymatic activity to hydrolyze nucleotides like ATP and GTP to generate energy for polymerization. Therefore, the formation of intermediate filaments is multistep self-assembly. The involvement of any accessory proteins in intermediate filament formation has not yet been...
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The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
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The intermediate filaments are one of three widely studied cytoskeletal filaments. They are so named as their diameter (10 nm) is in between that of microfilaments (7 nm) and the microtubules (25 nm).  These filaments are highly stable and can remain intact when exposed to high salt concentrations and detergents. These filaments are responsible for providing stability and mechanical support to the cells. They also help in cell adhesion and maintaining tissue integrity.
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Vertical curves are essential in roadway design because they provide smooth transitions between varying roadway grades. Designing vertical curves involves calculating intermediate elevations and identifying the curve's highest or lowest point, which is essential for optimal roadway performance.Intermediate elevations on a vertical curve are determined using the tangent offset method. This method considers the initial elevation at the start of the curve, the grades, and the curve's geometry. The...
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Recent Developments in Intermediate Moisture Foods.

L E Erickson1

  • 1Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506.

Journal of Food Protection
|March 15, 2019
PubMed
Summary
This summary is machine-generated.

The science of intermediate moisture foods has significantly advanced, with new developments in understanding water activity and food degradation. This progress has led to the creation of novel intermediate moisture foods and methods for controlling water activity.

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Area of Science:

  • Food Science and Technology
  • Food Chemistry
  • Food Engineering

Background:

  • The field of intermediate moisture foods (IMFs) has seen substantial scientific and technological progress over the past 25 years.
  • Understanding the intricate relationship between water activity and food degradation has been a key area of advancement.
  • The development and application of novel food preservation techniques have been central to this progress.

Purpose of the Study:

  • To review the significant developments in intermediate moisture food science and technology over the last quarter-century.
  • To highlight advancements in understanding the role of water activity in food stability and quality.
  • To document the emergence of new intermediate moisture food products and water activity modification methods.

Main Methods:

  • Literature review of scientific publications, patents, and industry reports from the last 25 years.
  • Analysis of research trends in water activity, food degradation kinetics, and IMF formulation.
  • Synthesis of information on novel processing techniques and ingredients used in IMF development.

Main Results:

  • Considerable progress has been made in elucidating the relationship between water activity and the degradation pathways of foods.
  • Numerous innovative intermediate moisture food products have been successfully developed and commercialized.
  • Several effective methods for precisely altering and controlling the water activity of food systems have been established.

Conclusions:

  • The science and technology of intermediate moisture foods have experienced transformative growth in the last 25 years.
  • Enhanced knowledge of water activity is crucial for predicting and mitigating food degradation, leading to improved shelf stability.
  • The development of new IMFs and water activity control methods offers expanded opportunities for food product innovation and preservation.