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Methyl cellulose, also known as cellulose methyl ether, described as MC (abbreviation of MethylCellulose), is a long-chain substituted cellulose. It is a pure hydrophilic white powder that liquifies in cold water (however not in hot water) to develop a clear thick service or gel.
Offered under various trade name, it is utilized as a thickener and also emulsifier in a selection of foods as well as cosmetics, and also is additionally used to treat bowel irregularity. Like cellulose, it is non-digestible, non-toxic, and also not an irritant.
Methyl cellulose is a really steady material, resistant to acid, antacids, bacterium, warmth, etc. In the human body, it is eliminated totally unmodified.
Methyl cellulose cannot be digested or absorbed after oral administration, so it is a non-caloric material. Excessive intake of methylcellulose may temporarily increase flatulence and esophagus obstruction if not drinking enough water, but methylcellulose has a laxative effect.
The average molecular weight of Methyl cellulose is 10,000 to 220,000. It is white powder or coarse substance at room temperature level, non-toxic, non-irritating, non-allergic, and the evident family member thickness is 0.35-0.55 (the truth is 1.26-1.30).
It swells into a translucent viscous colloidal solution in water, and the aqueous solution of methyl cellulose has surface activity. After drying, a film is formed, which undergoes a reversible transition from sol to gel after heating and cooling, and is neutral to litmus.
Insoluble in ethanol, ether as well as chloroform, soluble in glacial acetic acid. It is resistant to acid, antacids, microbes, warmth, light, etc, and also is not influenced by oil as well as oil, however it will melt when it gets to the ignition point.
About 27%~32% of the hydroxyl groups in Methyl cellulose exist in the form of methoxy groups. Different grades of methylcellulose have different degrees of polymerization, which range from 50 to 1000.
Methyl cellulose solution is stable to dilute acid and alkali with pH value of 3-11 at room temperature, and is easily destroyed by microorganisms and spoiled. Therefore, solutions should be preservatives added or autoclaved. The change of solution viscosity after autoclaving was related to solution pH value. For solutions with pH <4, the viscosity decreases by more than 20% after autoclaving.
Methyl cellulose is commonly used as thickener, stabilizer, emulsifier, excipient, dispersant, sticky, film-forming agent, hydrosol substitute, etc. Additionally utilized in mayo, reducing and also certain various other foods.
Used in food:
Because this product is indigestible in the body, it can keep a number of times of water and also cause satiation. It can be utilized in soda biscuits, waffles and also various other healing foods. Likewise utilized in frozen foam products, potato chips, soft drinks, special dietary foods, pastry shop dental fillings, foam garnishes, sauces, sauces.
In the pharmaceutical market, it is made use of as a protective colloid as well as dispersant, an extender, a stabilizing as well as emulsifier, as well as a glue.
Pulse field capillary electrophoresis was performed on kilobase nucleotides in dilute methyl cellulose solution, and bone marrow cells were cultured in semi-solid methyl cellulose medium.
This item is commonly utilized in the construction sector, such as a mixture of concrete, mortar, joint mortar, etc.
Methyl cellulose can be utilized as synthetic material dispersant, coating film-forming agent, thickener, developing product adhesive, textile printing as well as coloring sizing agent, film-forming representative in pharmaceutical as well as food industries, and so on.
It is additionally made use of as sizing representative for printing and also dyeing of francium, artificial material dispersant, finish movie former and thickener.
In the cosmetic, pharmaceutical, and food industries, methylcellulose is used as a binder for film-forming agents.
The ratio of methoxy group content to hydroxypropyl content is different, and its properties are also different. The main differences between the two are as follows:
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