1,700+ technical articles by Aladdin Scientific's scientists on reagent selection, reaction mechanisms, assay design and formulation. New every week.
The conversion of salicylate to catechol is a key reaction in microbial degradation of aromatic compounds. This process is usually catalyzed by salicylate hydroxylase and proceeds with the participation of flavin cofactors, reduced coenzymes, and molecular oxygen. It involves aromatic-ring ...
Alkyd resins are a class of oil- or fatty-acid-modified polyester resins. They are typically prepared by esterification polycondensation of polyols, polyacids or acid anhydrides, and vegetable oils or fatty acids. The name “alkyd” is derived from alcohol and acid, reflecting the basic ...
Epoxy resins are widely used because they can be formulated into different material systems to address different engineering challenges. In practical applications, epoxy resins most commonly solve four types of problems.
The antioxidant enzyme defense system is an important barrier by which cells resist reactive oxygen species-induced damage. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px/GPx) form a continuous reaction chain that removes superoxide anions, hydrogen peroxide, and ...
Many people first become familiar with epoxy resin through two-part AB adhesives, clear casting resins, floor coatings, or repair adhesives. These products may indeed belong to epoxy systems, but they do not represent the full scope of epoxy resin.
For most amine-, anhydride-, and phenolic-type curing systems, the fundamental reason why an epoxy resin changes from a liquid, viscous, or processable state into a hard material is that the epoxy groups react chemically with the curing agent or curing system, gradually forming a ...
The gloss of a coating surface is mainly related to how light is reflected. A high-gloss coating film has a relatively smooth surface, so incident light tends to be reflected in a concentrated, specific direction. To the human eye, this appears as a bright, clear, highly reflective surface. A ...
Probiotics are not all live microorganisms, nor are they all microorganisms found in fermented foods. The internationally used definition describes probiotics as live microorganisms that, when administered in adequate amounts, confer a health benefit on the host. For scientific experiments, this ...
Rubber antidegradants are additives incorporated into rubber formulations, latex systems, or rubber surface-protection systems to delay performance deterioration caused by heat, oxygen, ozone, light exposure, mechanical deformation, metal ions, and chemical media. Their role is not to make ...