gellan gum is the extra-cellular polysaccharide produced by the
gram-negative bacteria-pseudomonas elodea that is separated from water lily,
and is one of the microbia polysaccharides full of the development prospect in teh recen years.
specification of gellan gum
ITEM
STANDARD
RESULTS
Appearance
Off-white powder
Conforms
Purity (CO2 Yielding, %)
3.3 ~ 6.8
5.3
Nitrogen (%)
≤3
Conforms
Loss on Drying (105 °C, 2.5 hours, %)
≤15
4.2
Transmittance (%)
≥ 80
84.5
Gel Strength (g/ cm2)
>900
1025
Ashes (%)
<12
10.8
Isopropyl Alcohol (mg/ kg)
≤750
Negative
pH
6.0- 8.0
7.0
Lead (Pb)
≤2 mg/ kg
<2 mg/ kg
Mercury (Hg)
≤1 mg/ kg
<1 mg/ kg
Arsenic (As)
≤3 mg/ kg
<3 mg/ kg
Cadmium (Cd)
≤1 mg/ kg
<1 mg/ kg
Total Heavy Metals (as Pb)
≤20 mg/ kg
<20 mg/ kg
Total Plate Count (cfu/g)
≤ 10,000
Conforms
Moulds & Yeasts (cfu/g)
≤ 400
Negative
Salmonella spp./ 10g
Negative
Negative
E. coli/ 5g
Negative
Negative
Particle Size
Min 95% Pass 80 mesh
Conforms
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