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Related Concept Videos

Responses to Salt Stress02:02

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
Bronsted-Lowry Acids and Bases02:58

Bronsted-Lowry Acids and Bases

The acid-base reaction class has been studied for quite some time. In 1680, Robert Boyle reported traits of acid solutions that included their ability to dissolve many substances, to change the colors of certain natural dyes, and to lose these traits after coming in contact with alkali (base) solutions. In the eighteenth century, it was recognized that acids have a sour taste, react with limestone to liberate a gaseous substance (now known to be CO2), and interact with alkalis to form neutral...
Determining the pH of Salt Solutions04:08

Determining the pH of Salt Solutions

The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations form a solution with a pH less than 7. For example, in ammonium nitrate (NH4NO3) solution, NO3− ions do not react with water whereas NH4+ ions produce the hydronium ions resulting in the acidic solution. In contrast, salts that contain pH-neutral cations and the hydroxide ion-producing anions form a solution with a pH greater than 7. For...
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
Renal Regulation of Acid-Base Balance01:29

Renal Regulation of Acid-Base Balance

Metabolic reactions in the body produce nonvolatile acids, such as sulfuric acid, which generate an acid load of approximately 1 mEq of H+ per kilogram of body weight daily. Excreting H+ in the urine is essential to balance this acid load.
In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
However, the intercalated cells in...
Diagnosing Acidosis and Alkalosis01:24

Diagnosing Acidosis and Alkalosis

Diagnosing acid-base imbalances involves systematically analyzing arterial blood samples, focusing on three key measurements: pH, bicarbonate (HCO3−) concentration, and carbon dioxide partial pressure (PCO2). This analysis follows a four-step process that helps identify the imbalance's underlying cause and nature.
First, the pH level is assessed to determine whether the blood pH is normal (7.35–7.45), low (acidosis), or high (alkalosis).
Next, the PCO2  and HCO3−  values are examined to...

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Updated: Jun 19, 2026

Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time
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Closing Editorial: Research Progress on Chitosan Applications.

William M Facchinatto1, Sérgio Paulo Campana-Filho2

  • 1Aveiro Institute of Materials, CICECO, Department of Chemistry, University of Aveiro, St. Santiago, 3810-193 Aveiro, Portugal.

Polymers
|January 8, 2025
PubMed
Summary

Chitosan, a versatile biopolymer, shows great promise for biomedical and industrial uses due to its unique properties. Further research explores its potential in diverse applications.

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry

Background:

  • Chitosan is a naturally derived polysaccharide with remarkable biological and chemical properties.
  • Its inherent biocompatibility, biodegradability, and mucoadhesiveness make it suitable for advanced applications.

Discussion:

  • The study highlights chitosan's potential in drug delivery systems, tissue engineering scaffolds, and wound healing applications.
  • Its functional groups allow for chemical modifications, enhancing its performance for specific uses.

Key Insights:

  • Chitosan's unique properties position it as a key biomaterial for innovative solutions.
  • Versatility in biomedical and industrial fields is a significant advantage.

Outlook:

  • Future research will focus on optimizing chitosan-based materials for enhanced efficacy and targeted delivery.
  • Exploring novel applications and large-scale production methods are crucial for its widespread adoption.