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Acerbity third of alga of additive agent for food 2 mellow ester
From;    Author:Stand originally
Acerbity third of alga of additive agent for food of level of state of People's Republic of China GB 10616-89 of 2 mellow ester

Food Additive
Propylene Glycol Alginate
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1 theme content and suitable scope

This standard set alga acerbity third method of the technical requirement of 2 mellow ester, experiment, examine regulation and about packing, mark,
Keep in storage and each carriage requirement.
This standard is applied to with edible algal acid is basic raw material, the acerbity third of alga of additive agent for food that changes reaction to be made via ester 2 mellow ester.
This product basically is used make food, dressing, acidity beverage and wine kind thickener, emulsifying agent and bubble stabilizing agent.
Structural formula: (C9H14O7)n

2 cite standard

Titrate of GB 601 chemical reagents is analysed (the capacity is analysed) the preparation that uses standard solution
Impurity of GB 602 chemical reagents determines the preparation that uses standard solution
What GB 603 chemical reagents uses the preparation of preparation and goods in experiment method
Of the lead in GB 8449 additive agent for food determine method
Of the arsenic in GB 8450 additive agent for food determine method

3 technologies ask

3.1 exteriors:  of consult  horsefly dregses of rice  Xie 
2 mellow ester should accord with 3.2 alga acerbity third requirement issueing a list.
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Project ┃ index
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Ester is changed degree, % ≥ ┃ 75
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Not dissolve sex ash content, % ≤ ┃ 1.5
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Dry weightlessness, % ≤ ┃ 20
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Arsenic (As) , 0.000 2 of % ≤ ┃
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Heavy metal (with Pb plan) , % ≤ ┃ 0.002
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Lead (Pb) , % ≤ ┃ 0.001
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4 experiments method

The reagent that this standard place uses and water are in not special when making clear, the analysis that all uses active state level or specialized standard is simple
The water of reagent and distilled water or corresponding purity.
4.1 differentiate
4.1.1 reagent and solutionA. Second acerbity lead: 100g/L solution;B. Oxyhydrogen changes sodium: 100g/L solution;C. Vitriolic: 50g/L solution.
The preparation of 4.1.2 experiments solution
Say to take 1g sample, add 100mL water agitate to dissolve, make mushy glue fluid regards an experiment as solution.
4.1.3 differentiate a methodA. Take 5mL experiment solution (4.1.2) , add 5mL second acerbity lead to try juice (4.1.1a) , should instantly caky into mushy. B. Take 10mL experiment solution (4.1.2) , add 1 ML oxyhydrogen to change sodium solution (4.1.1b) , heat in water bath 5 ~ 6min, cold
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