US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 29988-2013: Food additive -- Potassium alginate (alginate, potassium)
Status: Valid
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| GB 29988-2013 | 209 |
Add to Cart
|
3 days
|
Food additive -- Potassium alginate (alginate, potassium)
| Valid |
Basic data
Standard ID: GB 29988-2013 (GB29988-2013)
Description (Translated English): Food additive -- Potassium alginate (alginate, potassium)
Sector / Industry: National Standard
Classification of Chinese Standard: C53
Classification of International Standard: 67.020
Word Count Estimation: 9,971
Regulation (derived from): China Food & Drug Administration [2013] No. 234, November, 1, 2013
Issuing agency(ies): National Health and Family Planning Commission of the People's Republic of China
Summary: This standard applies to food additives: potassium alginate (alginate, potassium).
GB 29988-2013: Food additive -- Potassium alginate (alginate, potassium)
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Food additive-Potassium alginate (alginate, potassium)
National Standards of People's Republic of China
Issued on. 2013-11-29
2014-06-01 implementation
National Food Safety Standard
Food additive potassium alginate (alginate, potassium)
National Food Safety Standard
Food additive potassium alginate (alginate, potassium)
1 Scope
This standard applies to the kelp (Laminaria), kelp (Macrocystis), Ascophyllum nodosum (Ascophyllum) brown algae and other plants were extracted
Processed food additive made from seaweed potassium (potassium alginate).
Formula 2
(C6H7O6K) n
3 Technical requirements
3.1 Sensory requirements
Sensory requirements shall comply with the requirements of Table 1.
Table 1 Sensory requirements
Project requires test methods
Color white to yellow white porcelain dish placed on a sample taken in natural light, observed
Color and Status fibrous or granular powder
3.2 Physical and Chemical Indicators
Physical and chemical indicators should be consistent with the provisions of Table 2.
Table 2. Physical and chemical indicators
Item Index Test Method
Viscosity (20 ℃) / mPa · s compliance claimed in Appendix A A.3
Loss on drying, w /% ≤ 15.0 GB 5009.3 direct drying
Potassium alginate content (K2O terms, on a dry basis), w /% 15.0 ~ 22.0 GB/T 17767.3
pH (10g/L solution) 6.0-8.0 Appendix A A.4
Water-insoluble, w /% ≤ 0.6 A.5 in Appendix A
Ash (dry basis), w /% 24 ~ 32 A.6 in Appendix A
Lead (Pb)/(mg/kg) ≤ 4 GB 5009.12
Total arsenic (As)/(mg/kg) ≤ 2 GB/T 5009.11
Loss on drying of dry sample items a sample taken after the determination; samples were prepared using a solution of nitric acid - perchloric acid consumption of cooking.
Appendix A
Testing method
A.1 General Provisions
Unless otherwise specified in this standard, the use of analytical reagent purity should be more than the standard titration solution, standard solution for measuring impurities,
Preparations and products, should be GB/T 601, GB/T 602, GB/T 603 requirements preparation, test water should be consistent with GB/T 6682-2008 in three
Water provisions. Solution was used in the tests did not indicate what is formulated with solvent, it refers to an aqueous solution.
A.2 Identification Test
A.2.1 Reagents and materials
A.2.1.1 calcium chloride solution. 25 g/L.
A.2.1.2 sulfuric acid solution. 1 mol/L.
A.2.1.3 1,3- dihydroxy-Naphthyl alcohol solution (10 g/L). Weigh about 1 g 1,3- dihydroxynaphthalene was dissolved in 100 mL absolute ethanol, mixing (now
Existing service).
A.2.1.4 hydrochloric acid.
A.2.1.5 isopropyl ether.
A.2.2 Preparation of sample solution
Weigh approximately 1 g sample was dissolved in 100 mL of water use.
A.2.3 Identification
A.2.3.1 soluble test
Sample in water was slowly dissolved to form a glue-like liquid, not soluble in ethanol and 30% ethanol solution, not soluble in chloroform and ether,
And pH < 3 acid solution.
A.2.3.2 calcium chloride precipitation test
Amount of 5 mL sample solution, add 1 mL of calcium chloride solution, should immediately generate a large volume of gelatinous precipitates.
A.2.3.3 sulphate precipitation test
Measure 10 mL sample solution, add 1 mL of sulfuric acid solution should result in heavy gelatinous precipitate.
A.2.3.4 Identification of alginate
Amount of 5 mL sample solution, 1 mL of freshly prepared 1,3-dihydroxy-Naphthyl alcoholic solution of hydrochloric acid and 5 mL shake. Boiled for 5 min, let cool,
Transferred to a 60 mL separatory funnel, washed with 5 mL of water container, lotion into a separating funnel. Add 15 mL of isopropyl ether, shaking extraction,
The ether layer was taken, and a blank control, isopropyl ether layer comparative sample tube and the control tube, should significantly deep purple.
A.3 Determination of viscosity
A.3.1 Principle
When viscometer rotor in potassium alginate solution by viscous resistance, so that the torque generated gossamer connection pointer, and viscous resistance
Force to contend with, the final balance, to reading.
A.3.2 Instruments and Equipment
Viscometer.
A.3.3 measuring step
A.3.3.1 preparation of a 1% solution of the sample 500 mL ~ 600 mL. Weigh 5.0 g ~ 6.0 g sample is added in advance the amount of good water, and need to press test
Sample size to calculate the amount of water required, when the sample is dissolved, should open an electric mixer, under stirring slowly added to the sample, stirring, until
It showed a uniform solution, bubble Tuojin place to spare.
A.3.3.2 first solution is adjusted to a temperature of 20 ℃ ± 0.5 ℃, then viscometer rules were measured after start viscometer switch, rotary
Turn about 0.5 min, until the reading is stable, it can read.
A.3.4 Calculation Results
A.3.4.1 viscosity (digital viscometer) direct readings.
A.3.4.2 viscosity (Analog viscometer) according to formula (A.1) Calculated.
sA (A.1)
Where.
A-- viscosity in units of mPa s (mPa · s);
s - viscometer pointer readings in milli-Pascal seconds (mPa · s);
- the determination of the appropriate selection of the rotor and the speed factor.
The results parallel arithmetic mean of the measurement results shall prevail. Two independent determination results obtained under the repeatability condition of absolute difference
Shall not exceed 3.0% of the arithmetic mean.
A.4 pH measurement
Preparation of sample solution 10g/L, according to GB/T 9724 Determination.
A.5 Determination of insoluble matter
A.5.1 Principle
Potassium alginate solution by vacuum filtration sand core crucible, the residue is washed and dried to constant weight to represent the mass fraction.
A.5.2 Instruments and Equipment
A.5.2.1 vacuum pump.
A.5.2.2 sand core crucible. filter plate pore size 16 μm ~ 40 μm.
A.5.3 measuring step
Weigh a sample of about 0.5 g, weighing accuracy of 0.000 2 g, in 500 mL beaker, add water to 200 mL, covered with a watch glass, heated to boiling, Paul
Support micro-boiling 1 h (note agitation when heated). Serve hot with dried to constant weight (mass difference of no more than twice around 0.000 2 g to constant weight, cooling operation
Should be strictly maintained for Unified cooling time) of the sand core crucible vacuum filtration, and washed thoroughly with hot water beaker and the sand core crucible, and then the sand
Core crucible in the 105 ℃ ± 2 ℃ oven drying to constant weight (mass difference of no more than twice around 0.000 3 g to constant weight).
A.5.4 Calculation Results
Water insoluble mass fraction w1 according to formula (A.2) Calculated.
mm
w 100
twenty one
1
.. (A.2)
Where.
m1-- sand core crucible with water insoluble mass in grams (g);
m2 - the quality of the sand core crucible in grams (g);
m3-- sample mass, in grams (g).
The results parallel arithmetic mean of the measurement results shall prevail. Two independent determination results obtained under the repeatability condition of absolute difference
Shall not exceed 15% of the arithmetic mean.
A.6 Determination of ash
A.6.1 Principle
After completion of potassium alginate burning the remaining inorganic material is ash at 600 ℃ ± 25 ℃.
A.6.2 Instruments and Equipment
A.6.2.1 high-temperature furnace.
A.6.2.2 furnace.
A.6.2.3 dryer (with a desiccant).
A.6.2.4 balance. a sense of the amount of 0.1 mg.
A.6.2.5 porcelain crucible.
A.6.3 Determination
A.6.3.1 crucible constant weight
Take a clean porcelain crucible placed in a furnace, burning 30 min at a temperature of 600 ℃ ± 25 ℃, cooled to about 200 ℃, remove and let
Into the dryer to cool to room temperature, accurately weighed, and repeatedly burned to constant weight.
A.6.3.2 burning
In the constant weight of the crucible weighed sample measured after drying loss of about 2 g, weighing accuracy of 0.000 2 g, charring on a hot plate carefully to smoking
After implantation furnaces, burning 4 h at 600 ℃ ± 25 ℃. After cooling to below 200 ℃, take out and put it into the dryer to cool 30 min,
Such as residue on ignition charcoal tablets, to sample a few drops of 30% hydrogen peroxide (H2O2) in the pre-weighing solution (just wet as well, it is not appropriate
Plus), after a small fire in the furnace was evaporated to dryness, again to no carbon particles burning ash that is complete, accurate weighing. Repeat twice before and after burning to the difference in the quality
Not more than 0.002 g to constant weight.
A.6.4 Calculation Results
Ash mass fraction w2 according to formula (A.3) Calculated.
mm
mm
w 100
2
(A.3)
Where.
m4-- empty crucible mass in grams (g);
Quality m5-- before ashing crucible with the sample, in grams (g);
Quality m6-- after ashing crucible with the sample, in grams (g).
The results parallel arithmetic mean of the measurement results shall prevail. Two independent determination results obtained under the repeatability condition of absolute difference
Shall not exceed 2.0% of the arithmetic mean.
......
Tips & Frequently Asked Questions:
Question 1: How long will the true-PDF of GB 29988-2013_English be delivered?
Answer: Upon your order, we will start to translate GB 29988-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.
Question 2: Can I share the purchased PDF of GB 29988-2013_English with my colleagues?
Answer: Yes. The purchased PDF of GB 29988-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.
Question 3: Does the price include tax/VAT?
Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs):
List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?
Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
