White or offwhite, flavorless, amorphous and semitransparent flake
or powder; freely soluble in water, the
solution is clear and character is stable.
Chitosan CAS : 9012-76-4
Chitosan Medicine grade,Food grade,Industrial grade
Particle size 60mesh, 80mesh, 100mesh
Chitosan is a linear polysaccharide composed of randomly
distributed β-(1-4)-linked D-glucosamine (deacetylated unit) and
N-acetyl-D-glucosamine (acetylated unit). It is made by treating
shrimp and other crustacean shells with the alkali sodium
Chitosan has a number of commercial and possible biomedical uses.
It can be used in agriculture as a seed treatment and biopesticide,
helping plants to fight off fungal infections. In winemaking it can
be used as a fining agent, also helping to prevent spoilage. In
industry, it can be used in a self-healing polyurethane paint
coating. In medicine, it may be useful in bandages to reduce
bleeding and as an antibacterial agent; it can also be used to help
deliver drugs through the skin.
More controversially, chitosan has been asserted to have use in
limiting fat absorption, which would make it useful for dieting,
but there is evidence against this.
Other uses of chitosan that have been researched include use as a
soluble dietary fiber.
Chitosan is extracted from chitin, insoluble in water but soluble
in dilute acid and absorbed by human body. As the firdt derivate,
it's chemical constitution is macromolecule alkalescent
polysaccharide polymer with cation. It has peculiar physical,
chemical properties and bioactive function.
Chitosan is listed as follows:
A. High Density Chitosan
B. High Viscosity Chitosan
C. Industrial Grade Chitosan
D. Food Grade Chitosan
E. Medical Grade Chitosan
F. Low Molecular Weight Chitosan
G. Aroxymethyl Chitosan
H. Chitosan Oligosaccharide
Used as food additives, thickeners, preservatives fruits and
vegetables, fruit juice clarifying agent, forming
agent, adsorbent, and health food.
2)Medicine, health care products field
As the chitosan non-toxic,has anti-bacterial, anti-inflammatory,
hemostatic, and immune function, can be used
as artificial skin, self-absorption of surgical sutures, medical
dressing Branch, bone, tissue engineering
scaffolds, enhance liver function, improve digestive function,
blood fat, lowering blood sugar, inhibiting tumor
metastasis, and adsorption and complexation of heavy metals and can
be excreted, and so on, was vigorously
applied to health food and drug additives.
3)Environmental protection field
Chitosan and its derivatives is a good flocculant for wastewater
treatment and metal recovery from metal-containing waste water; in
textile field: as a mordant, health care fabric, sizing agents,
printing and dyeing
As growth promoters, bio-pesticides, feed additives, seeds, etc.
5)Field of tobacco
Tobacco sheet used as adhesives, low-tar filter and so on.
Chitosan is refined from deacetylation of chitin which is extracted
from deep-sea Alaska crab cods. As the only basic polysaccharide
among natural polysaccharides, this product has many physical and
chemical characteristics and physiological activities. Precisely,
this product can control cholesterol, inhibit bacterial activity,
prevent and control high blood pressure, absorb and excrete heavy
metals, maintain humidity and strengthen immunity. In food
industry, this product can be used as antibacterial agent, fruit
and vegetable preservative and antioxidant. There are many special
functional groups in molecular chain, so the chitosan can be
manufactured into many products according to different reactions on
functional groups, such as acylation, sulfation and oxidation,
grafting and crosslinking, hydroxyethylation and
hydroxymethylation. These products can be used in many fields,
including medicine, food, chemical, cosmetic, water treatment,
metal extraction and recovery, biochemical and biomedical
engineering. There are many types of chitosan, including
GS-chitosan oligosaccharide, high density type, special molecular
weight type, medical/food / industrial grade type, water soluble
type and specialized type.
Chitosan can inhibit growth and reproduction of fungi, bacteria,
and virus. When this product is used as coating preservation, it
can inhibit respiratory metabolism and water loss of fruits and
vegetables, thus slowing their aging process of organization and
structure and effectively extending their postharvest life. This
product can also be used as antioxidant. In heating process, free
iron ions are released from meat hemoglobin and they form chelates
with chitosan, thus their catalytic activity is inhibited.
Agricultural and horticultural use
The agricultural and horticultural uses for chitosan, primarily for
plant defense and yield increase, are based on how this glucosamine
polymer influences the biochemistry and molecular biology of the
plant cell. The cellular targets are the plasma membrane and
nuclear chromatin. Subsequent changes occur in cell membranes,
chromatin, DNA, calcium, MAP Kinase, oxidative burst, reactive
oxygen species, callose pathogenesis-related (PR) genes and
Natural biocontrol and elicitor
In agriculture, chitosan is used primarily as a natural seed
treatment and plant growth enhancer, and as an ecologically
friendly biopesticide substance that boosts the innate ability of
plants to defend themselves against fungal infections. The natural
biocontrol active ingredients, chitin/chitosan, are found in the
shells of crustaceans, such as lobsters, crabs, and shrimp, and
many other organisms, including insects and fungi. It is one of the
most abundant biodegradable materials in the world.