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SS extracellular polysaccharides | Alkaloids producing bacteria polysaccharides | Weilan gum | Technical parameters and application guidelines
SS extracellular polysaccharides (alkaline producing bacteria polysaccharides) are a type of water-soluble heteropolysaccharides produced by the fermentation of soil bacteria alkaline producing bacteria. These polysaccharides are known for their extraordinary rheological properties and are highly valuable high-performance biopolymers. Among them, Weilan gum is the most famous and commercially successful representative of this type of polysaccharide. This product has ultra-high pseudoplasticity, excellent temperature and salt resistance, and outstanding suspension stability, playing an irreplaceable role in many industrial fields from petroleum extraction to food processing.
SS extracellular polysaccharides (alkali producing bacteria polysaccharides)/carrageenan
English name
SS-EPS (Alcaligenes Polysaccharide) / Welan Gum
Source
Fermentation products of alkali producing bacteria
Appearance
Light yellow to milky white flowable fine powder
Chemical composition
A repeating tetrasaccharide unit composed of glucose, glucuronic acid, and xylose.
CAS number
71010-52-1
Recommended dosage
0.1% - 0.5%
Daily Chemical Industry:
Cosmetics, toothpaste, shampoo
Product Advantage
1
Excellent temperature and salt resistance:
It can maintain excellent viscosity stability and structural integrity even in high temperature (>90 ° C) and high salt (including divalent cations) environments, and its performance far exceeds that of xanthan gum.
2
Extremely high pseudoplasticity and suspension force:
With extremely high static viscosity and significant shear thinning characteristics, it can effectively suspend and carry solid particles, preventing settlement.
3
Efficient thickening efficiency:
passed ISO22716 cosmetic grade and USP pharmaceutical grade standards
4
Wide pH stability:
much less irritation than other whitening ingredients
Usage method
Operation Guide
Hydration and dispersion methods (key steps):
Standard hydration method (applicable to most applications):
Step 1: Pre dispersion
Under high-speed shear stirring (recommended ≥ 800 rpm), slowly and evenly sieve the powder into room temperature water. This is the most crucial step in avoiding the formation of "fish eyes" (gum lumps).
Step 2: Heating activation
Heat the dispersed solution to 85-95 ° C and maintain high-speed stirring at this temperature for 20-30 minutes. Heating is a necessary condition for complete hydration and achieving maximum viscosity.
Step 3: Cooling and completion
Stop heating and continue stirring and cooling to the desired process temperature. After cooling, the viscosity will reach its peak.
FAQ
Q1: What is the relationship between SS extracellular polysaccharides (alkali producing bacteria) and carrageenan? What are the advantages compared to xanthan gum?
A1: Weilan gum is the most representative variety of SS extracellular polysaccharides (alkali producing bacteria). Compared with xanthan gum, its main advantages are: Temperature resistance: The viscosity retention rate at high temperatures is much higher than that of xanthan gum. Salt resistance: Especially resistant to divalent cations (such as Ca ² ⁺, Mg ² ⁺), and xanthan gum may precipitate in this environment. Suspension force: Due to its higher pseudoplasticity, it has a stronger ability to suspend solid particles.
Q2: How to solve the problem of unsolvable colloidal particles after dissolution?
A2: Prevention: Ensure the use of high shear equipment; Slowly add the powder to the vortex; Alternatively, the powder can be pre dispersed into a slurry using non-ionic solvents such as glycerol or propylene glycol, and then water can be added. Solution: For the formed colloidal particles, they can be processed by colloid mill or high-pressure homogenizer, which can effectively disperse most of the colloidal particles.
Q3: Has the application of this product in food been approved?
A3: Weilan gum has been approved as a food additive (thickener) in China, with INS number 440, and can be used in various foods. For other types of SS extracellular polysaccharides, their compliance depends on specific strains and regulations. When purchasing, please be sure to request compliance certification documents from the supplier for the target market (such as Chinese GB standards, EU, US FDA).
