CMC Sodium
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Product Introduction
Product Details
I. Widespread Applications and Characteristics of CMC in Food
(I) Excellent Stability of Sodium Carboxymethyl Cellulose Thickener
In frozen foods such as popsicles and ice cream, the use of sodium carboxymethyl cellulose powder can control ice crystal formation, increase the overrun, maintain a uniform texture, resist melting, produce a smooth and delicate taste, and whiten the color. In dairy products, whether flavored milk, fruit milk, or yogurt, it can react with proteins within the isoelectric point range (pH 4.6) to form a complex structure, which is beneficial to the stability of the emulsion and improves the resistance of proteins.
(ii) Sodium carboxymethyl cellulose can be compounded with other stabilizers and emulsifiers.
In food and beverage products, manufacturers generally use a variety of stabilizers, such as xanthan gum, guar gum, carrageenan, and dextrin, and emulsifiers, such as glyceryl monostearate and sucrose fatty acid esters, in combination. This allows for complementary advantages and synergistic effects, reducing production costs.
(III) CMC exhibits pseudoplasticity.
The viscosity of CMC powder is reversible at different temperatures; as temperature increases, the solution viscosity decreases, and vice versa. CMC viscosity decreases in the presence of shear force, and further decreases with increasing shear force. These properties allow CMC additives to reduce equipment load and improve homogenization efficiency during stirring, homogenization, and pipeline transportation, which is unmatched by other stabilizers.
II. Process Requirements
Sodium carboxymethyl cellulose additive, as an effective stabilizer, can have its effectiveness compromised if used improperly, potentially leading to product spoilage. Therefore, for CMC (Chemical Methyl Cellulose), a fully and uniformly dispersed solution is crucial for improving its efficiency, reducing dosage, enhancing product quality, and increasing yield.
This requires food manufacturers to fully understand the characteristics of various raw materials and rationally adjust their production processes to ensure that thickener sodium carboxymethyl cellulose can function effectively. Particular attention should be paid to the following at each stage of the process:
(I) Ingredient Preparation
1. High-speed mechanical shear dispersion: Any equipment with mixing capabilities can be used to assist in the dispersion of thickener sodium carboxymethyl cellulose powder in water. High-speed shearing ensures that CMC is evenly immersed in the water, accelerating the dissolution of high-quality CMC. Some manufacturers currently use water-powder mixers or high-speed mixing tanks.
2. Dry sugar dispersion: Mix CMC and sugar in a 1:5 ratio. While continuously stirring, slowly sprinkle the mixture in to ensure complete dissolution of the CMC.
3. Dissolving in saturated sugar water, such as maltose, can accelerate the dissolution of CMC.
(II) Acid Addition
For some acidic beverages, such as yogurt, acid-resistant products must be selected. Proper operation can improve product quality and prevent sedimentation and stratification.
1. The acid addition temperature should be strictly controlled, generally below 20℃.
2. The acid concentration should be controlled between 8-20%, the lower the better.
3. Acid is added via spraying, along the tangent of the container, generally for 1-3 minutes.
(III) Homogenization
1. Emulsification Purpose.
Homogenization: For oil-containing liquids, CMC additives should be compounded with emulsifiers, such as monoglycerides. Homogenization pressure: 18-25 MPa, temperature: 60-70℃.
2. Dispersion Purpose.
Homogenization is necessary if the various ingredients in the initial batch are not completely homogenized and some small particles still exist. Homogenization pressure: 10 MPa, temperature: 60-70℃.
| Application | Type | Viscosity | Degree of Substitution | Purity | Moisture | |
| Food Grade | FH6 | 1% Soln 100-1000 | 0.7-0.9 | ≥99.5 | ≤8% | |
| FVH6 | 1% Soln 1000-10000 | 0.7-0.9 | ≥99.5 | ≤8% | ||
| FH9 | 1% Soln 300-500 | ≥0.90 | ≥99.5 | ≤8% | ||
| FVH9 | 1% Soln 1000-6000 | ≥0.90 | ≥99.5 | ≤8% | ||
| FL100 | 2% Soln 30-150 | ≥1.0 | ≥99.5 | ≤8% | ||
| Medical Grade | PM7 | 2% Soln 950-5400 | 0.65-0.98 | ≥99.5 | ≤8% | |
| PH7 | 2% Soln 6800-16200 | 0.65-0.98 | ≥99.5 | ≤8% | ||
| Toothpaste Grade | TH9 | 2% Soln 900-1200 | 0.92-1.0 | ≥99.5 | ≤7% | |
| TH10 | 2% Soln 900-1200 | 0.95-1.0 | ≥99.5 | ≤7% | ||
| TH12 | 2% Soln 900-1200 | ≥1.1 | ≥99.5 | ≤7% | ||
| 9H | 1% Soln 1200-4000 | 0.8-1.1 | ≥99.5 | ≤7% | ||
| Printing & Dyeing Grade | 10H | 1% Soln ≥3000 | ≥1.0 | ≥95.0 | ≤10% | |
| 13H | 1% Soln ≥2000 | ≥1.0 | ≥95.0 | ≤10% | ||
| 15H | 1% Soln ≥1800 | ≥1.50 | ≥95.0 | ≤10% | ||
| 18H | 1% Soln ≥1000 | ≥1.80 | ≥95.0 | ≤10% | ||
| Battery Grade | BVH | 1% Soln 1000-9000 | 0.89-0.94 | ≥99.5 | 5%-7% | |
| Ceramic Grade | C1300/1500/1800 | 1% Soln 1200-2000 | ≥0.90 | ≥98.0 | ≤10% | |
| C25 | 1% Soln 20-30 | ≥1.00 | ≥98.0 | ≤10% | ||
| CH10 | 1% Soln 100-1200 | ≥1.00 | ≥98.0 | ≤10% | ||
| TCH9 | 1% Soln 200-500 | ≥1.00 | ≥98.0 | ≤10% | ||
| Oil Drilling Grade | PAC-HV | 1% Soln ≥2500 | ≥0.95 | ≥98.0 | ≤10% | |
| PAC-LV | 2% Soln 100-150 | ≥1.0 | ≥98.0 | ≤10% | ||
| CMC-HV | 1% Soln 1500-1800 | ≥0.90 | ≥65.0 | ≤10% | ||
| CMC-LV | 2% Soln 90-150 | ≥0.90 | ≥65.0 | ≤10% | ||
| Papermaking Grade | FR | 2% Soln 10-70 | ≥0.90 | ≥99.0 | ≤10% | |
(IV) Sterilization
Sodium carboxymethyl cellulose additive, especially at temperatures above 50℃ for extended periods, can cause irreversible viscosity decreases in low-quality CMC. Generally, the viscosity of CMC from other manufacturers decreases significantly after 30 minutes at 80℃. Therefore, instantaneous sterilization or pasteurization can be used to shorten the high-temperature time for CMC.
(V) Other Precautions
1. Use clean, treated tap water whenever possible. Avoid using well water to prevent microbial contamination and ensure product quality.
2. Do not use metal containers for dissolving or storing CMC. Use stainless steel containers, wooden basins, or ceramic dishes to prevent the ingress of divalent metal ions.
3. After each use, seal the packaging bag tightly to prevent CMC from absorbing moisture and deteriorating.
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