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Specifications
2.Good quality and price
3.Provide free sample
4.high qiality and low cost
Purple Sweet Potato Color/natural food colouring :
Purple Sweet Potato Color, a pure natural and water soluble food color produced by our company, is extracted from purple root tuber of edible purple sweet potato (Impomoea batatas ) planted locally. The process is checking, washing, slicing, extracting, filtrating, purifying, concentrating, sterilizing(pur purple sweet potato color/natural food colouring ple sweet potato color liquid), spraying & drying(purple sweet potato color powder). The main ingredient is cyanidin acyl glucoside & peonidin acyl glucoside.
Appearance:
Purple sweet potato color powder is red to purple red, liquid is brown purple, both has the characteristic odor of sweet potato. It can be dissolved in water & alcohol, propylene glycol solution easily, but not in oil. The color of water solution changes when PH is different. When PH is between2-6, the color is red or purple red .The solution color becomes blue, and is unstable when PH is above 6. The color of solution can’t fade under light for a long time, and also has good resistance to high temperature in an acidic medium.
Quality Standard:
Items |
Enterprise Standard |
||
Powder |
Liquid |
||
Color Value E(1%,1cm,PH3.0,530±3nm) |
30~80 |
10~30 |
|
Loss on Drying |
% Less than |
10 |
—— |
Ash |
% Less than |
4 |
2 |
PH |
|
2~4 |
2~4 |
Lead(as Pb) |
mg/kg Less than |
5 |
3 |
Arsenic(as As) |
mg/kg Less than |
2 |
1 |
Total Plate Count |
cfu/g less than |
1,000 |
1,000 |
Pathogenic Bacteria |
|
Negative |
Negative |
Applications and Usage Instruction:
Purple sweet potato color can be widely used in wine, beverage, fruit sauce, candy, cake.
Usage Reference:
Beverages:0.01~0.1%,candy:0.05~0.2%,cake:0.01~0.1%.
Storage:
Sealed, avoid light, store in cool and dry place.
Shelf Life:
If the storage condition attains as mentioned above, Powder two years from production date, liquid is six months(unopened). Once opened, should seal up again and use within six months(powder)or one month(liquid).
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