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Application of CMC in Food

Carxymethyl cellulose in food sodium (CMC) has many functions, such as thickening, emulsification, suspension, water retention, toughening, expansion and preservation, which are incomparable with other thickeners. When used in food, it can improve the taste, grade and quality of products, and prolong the shelf life.

I. Functions of

CARBOXYMETHYL CELLULOSE IN FOOD

1. Thickening: Viscosity can be obtained at low concentration. It can control the viscosity in the process of food processing and give the food a sense of lubrication.

2. Water retention: reduce the dehydration and shrinkage of food, prolong the shelf life of food;

3. Dispersion stability: Maintain the stability of food quality, prevent oil-water layer (emulsification), control the crystal size of frozen food (reduce ice crystal);

4. Film-forming: Form a layer of film in fried food to prevent excessive absorption of grease;

5. Chemical stability: It is stable to chemicals, heat and light, and has certain anti-mildew properties.

6. Metabolic inertia: As a food additive, it will not be metabolized and will not provide calories in food.

2. Properties of

CARBOXYMETHYL CELLULOSE IN FOOD

sodium

Compared with other similar products, our company produces edible grade CMC with the following characteristics:

1. Molecular distribution is uniform.

2. High acid resistance;

3. High salt tolerance;

4. A high degree of substitution and even substitution;

5, less gel;

4. It has the same properties as guar gum.

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CMC Usages in Papermaking Industry

Apply CMC into the paper pulp (add before pulping and alums mixing). CMC can disperse fiber, improve uniformity and strength of paper (bursting strength and stiffness). Using CMC with the same beating degree can shorten beating time, conserve energy. Dosage of CMC is 0.2%-0.8% of paper pulp. Can use CMC RM8-1. With the add of CMC, paper tension increases 40%-50%, tearing strength raises 50%, flexibility increased 4-5 times. Meanwhile, paper quality is of smoothness with good ink absorbency and clear printing edge. It's much better to use hard water during production.

2. Surface Sizing Agent

Sound surface strength is required during high-speed printing. When there is a low beating degree or high filling content, usually adopt a surface sizing method to increase the surface strength of paper and paperboard, reduce surface absorption. Through surface sizing, fiber holes of paper are sealed by a layer of sizing film. It can reduce the absorption of moisture in the air, as well as evaporation of moisture in the paper. Prevent paper from rolling up and crushing. Improve the paper absorption of ink and oil. Has the effect of grease-proof, waterproof and oil-resistant.

To avoid paper and paperboard surface lint and powder falling, can use CMC solution with low viscosity and medium viscosity. With medium viscosity, CMC solution can get a layer of compact grease-proof film. Usually, use CMC solution with 1%-2% concentration can get 0.1g/m2--0.5g/m2 sizing. Users can also decide CMC viscosity according to the different base paper. It can mix low and medium viscosity CMC. High purity CMC has a good property of paper film-forming. Instead, Industrial grade CMC with low purity has poor performance on paper film-forming. Dosage of CMC is 1/2-1/3 comparing with that of starch. Especially that modern paper-making factories conduct sizing with the high-speed machine, which can only apply CMC solution with lower viscosity and high purity.

3. Coating Agent

Coating whiteboard paper and chrome paper usually need coating pigment. Use CMC in coating color can improve water retention and rheology effect. CMC is featured by characteristics of good dispersion and binding, with the dosage 0.5%-2.5%. The exact dosage is according to different viscosity and speed of machines.

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CMC Usages in Food Industry

1. CMC Applications in Fermented Yoghurt

1.1. Main Raw Materials of Fermented Yoghurt

Fresh milk or milk powder, sucrose ester, compound stabilizer (including CMC), granulated sugar, sodium citrate, phosphate, preservative, essence and drinking water, etc.

1.2. Processing Technology

Raw milk→Sterilization→Cooling→Insulated fermentation→Cooling→(Compound CMC+Sugar+Sucrose Ester) Completely dissolving and then adding→Stirring→Flavoring acid and odor→Homogeneous sterilization→Cooling→Packing

1.3. Key Point During Processing

1.3.1. The compound stabilizer is acid-resistant CMC: PGA (propylene glycol alginate)=1:1,  the dosage of compounded CMC accounts for 0.4% of the total amount.

1.3.2. Compounded stabilizer, sugar and sucrose ester had better be dry-mixed. Then dissolving with 50℃ water. Filtering the solution after complete dissolution. Cooling it to 15℃ and add into the yogurt.

1.3.3. Slowly flavoring acid, then becoming quickly to control the final pH value at 3.8-4.0. The temperature should be below 15℃when flavoring acid and odor. The conditional factories usually agitate below 5℃.

1.3.4. Can select CMC FM9, FH9, FH10.

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Oil Drilling Grade Carboxymethyl Cellulose & PAC

Description of Oil Drilling Grade CMC & PAC

CMC & PAC can be used as fluid loss reducer or viscosifier in drilling fluids. The function of CMC is to reduce the fluid loss as much as possible through forming low permeability, flexible, thin and compact filtration cake on borehole wall. Used as thickening agent, suspension agent and plugging agent.

Our PAC-HV/LV (oil drilling grade) and CMC-HV/LV are advantageous because of their small dosage, high yield,  anti-bacterial, good salt tolerance properties and convenient to use, reduction of fluid loss, and improvement of viscosity, flowing control and strong suspending capability, environmental friendly, non-toxic, harmless and odorless, and good liquidity, convenient to construction.

1. Excellent temperature resistant and salt resistant properties.

2. Strong capability of carrying crumbs, restraining the dispersion of the clay, reducing the speed of pulp yield by clay, stabilizing the well wall and effectively increasing the drilling rate.

3. Easily disperse in water based drilling fluid. CMC & PAC can be used in fresh water to saline water drilling fluids.

4. Less residue. Can prevent fluid flow into pores and cracks.

5. As fracturing agent, CMC & PAC can provide good sand suspension effect, apparently reduce fluid loss and thin filtration cake. Have strong inhibition effect of shale water.

6. Good suspending capability, containing more solid phases, greatly increasing the stability of granule, best for configuring the high density drilling fluids, and adjusting the rheology of drilling fluid, forming the compact high quality mud cake in the drilling fluids. It has the good function of reducing the fluids loss and free water.

4. Good compatibility with other polymer, strong suspending power, cleaning drilling crumbs fast and efficiently, making the drilling fluids stay into low solid phase and low dispersion of clay, and it is also the good filtration reducer. Adjusting the rheology of drilling fluids fast and efficiently, excellent suspending power, cleaning drilling crumbs promptly and efficiently, maintaining the low solid content, enhancing the speed of the drilling rate, stabilizing the well wall, and possessing the good effect in filtration reducer.

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Food Grade Carboxymethyl Cellulose

http://www.sdfrchem.com/products/food-grade-cmc.htmlDescription of Food Grade CMC

Sodium carboxymethyl cellulose (CMC/cellulose gum) is kind of cellulose ether, can easily soluble in cold and hot water, with maximum yield, most widely and conveniently used among all cellulose products. The main raw material of CMC is refined cotton and wood pulp. It is mostly used in the food industry with a common dosage of 0.2%-0.5%. Compared with other similar hydrocolloids, food-grade CMC is featured by strong acid resistance, high salt-resistance and good transparency, with very few free fibers, fast dissolving and good fluidity after dissolving.

The main function of carboxymethyl cellulose is a thickener, stabilizer, tenacity strengthening agent, water retention agent, dispersing agent, binder, suspension, film-forming agent and so on in food and beverage processing, such as ice cream, juice, fruit jam, dairy products, beer, lactic acid drinks, yogurt, syrups, bakery products, wine, sauces, seasoning, meat products, etc.

Food grade CMC can control the size of crystal in frozen food, prevent stratification between oil and water. In an acid system, it has good suspension stability in acid-resistant food, can effectively improve solution stability and impedance capability of protein. Sodium carboxymethyl cellulose can improve taste and mouthfeel, reduce the syneresis of food, raise quality and prolong shelf life.

We classified food grade CMC into two types, type 6 and type 9. Type 6 is a common CMC (degree of substitution 0.75-0.9), and type 9 (degree of substitution more than 0.9) is acid-resistant with much better stability. The purity of our food grade carboxymethyl cellulose is much higher more than 99.5%, meeting GB1886.232-2016, E 466 and FCC IV standard. This is very important to guarantee food safety. We can produce food grade CMC as required specifications from ultra-low to very high viscosity.

Used as a food additive, the main function of food-grade CMC is as thickener, stabilizer, tenacity water retention agent, emulsifier, suspension, film-forming agent and so on. It can be applied in various food, like ice cream, juice, fruit jam, dairy products, beer, lactic acid drinks, yogurt, syrups, bakery products, wine, sauces, seasoning, meat products, etc.

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Detergent Grade Carboxymethyl Cellulose

Preventing re-deposition of dirt effect

Adding sodium carboxymethyl cellulose in detergent has the function of preventing the re-deposition of dirt. The working principle is that negatively charged dirt granule and charged sodium carboxymethyl cellulose molecular absorbing on fabrics has mutual electrostatic repulsion.

Thickening effect

Sodium carboxymethyl cellulose can effectively thicken washing slurry or soap lye, stabilize the structure of compositions. With dosage of 0.5%-2.0% can get satisfactory performance.

Deterngent Grade CMC Parameters

Model

XYF-1

XYG-1

XYG-2

2%  Aqueous solution viscosity(mPa.s)

5-40 (1% aqueous solution)

900-1200

600-900

1%  Aqueous solution Brookfield iscosity (mPa.s)

200-500

100-300

Degree of substitution (D.S)

0.5-0.7

≥0.80

≥0.70

pH

8.0-11.5

6.5-8.5

6.5-9.0

Effective ingredient

≥55%

≥90%

≥80%

Loss on drying

≤10.0%

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SODIUM CARBOXYMETHYL CELLULOSE

Sodium carboxymethyl cellulose (Na-CMC or cellulose gum) is the most widely used and most frequently used type of anionic cellulose ether. It is a white fibrous or granulated powder. Odorless, tasteless, non-toxic, hygroscopic, easily soluble in both hot and cold water, obtained by chemical modification of natural fibers featured by unusual and extremely valuable physical and chemical properties. The main raw material to process CMC is refined cotton and wood pulp.

Sodium carboxymethyl cellulose has superior functionality in terms of adhesive, thickening, stabilizing, emulsifying, water-retaining, tenacity strengthening, suspension, film-forming, etc, is widely used in various industries, such as food and beverage processing, ceramic, pharmaceutical, toothpaste, oil drilling, paper making, textile, and dyeing, etc. In the food industry, CMC can be compounded with other food stabilizers and emulsifiers to complement each other, strengthen each other’s effect and reduce the production cost.

The main indicators for measuring the quality of sodium carboxymethyl cellulose are the viscosity, degree of substitution (D.S) and purity. We divide sodium carboxymethyl cellulose into two types, type 6 and type 9 based on D.S value. Type 6 is common CMC (D.S 0.75-0.9), and type 9 (D.S more than 0.9) is acid-resistant with much better stability. Sodium carboxymethyl cellulose can also be divided into industrial grade and purified grade according to purity. The purity of food-grade carboxymethyl cellulose is much higher more than 99.5%, meeting GB1886.232-2016, E 466 and FCC IV standard. It is very important to guarantee food safety. We can produce carboxymethyl cellulose as required specifications from ultra-low to very high viscosity.

Sodium carboxymethyl cellulose is a natural, hydrophilic material. There may be lumps formed after the material is dispersed into water. Compared with other similar hydrocolloids, Fortune Biotech CMC has the characteristics of strong acid resistance, high salt resistance, finely distributed molecular weight, good transparency, few free fibers, low gel, fast-dissolving speed and good fluidity after dissolving.

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