GB 28401-2012 PDF English
US$70.00 · In stock · Download in 9 secondsGB 28401-2012: National food safety standards of food additives -- Phospholipid Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Obsolete
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 28401-2012 | English | 70 |
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National food safety standards of food additives -- Phospholipid
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GB 28401-2012: National food safety standards of food additives -- Phospholipid---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB28401-2012
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
National Food Safety Standard
Food Additives - Phospholipids
Issued on. MAY 17, 2014
Implemented on. JULY 17, 2012
Issued by. National Health and Family Planning Commission of the
People’s Republic of China
Table of Contents
1 Scope... 3
2 Technical requirements... 3
Appendix A... 4
National Food Safety Standard
Food Additives - Phospholipids
1 Scope
This Standard is applicable to food additives – phospholipids of which the main raw
materials are vegetable oilseed materials such as soybean, sunflower seed or their
processed by-products, and which are processed by process such as dehydration,
impurity removal, de-coloration or degreasing.
2 Technical requirements
2.1 Sensory requirements. It shall conform to Table 1.
2.2 Physiochemical indices. It shall conform to Table 2.
Appendix A
Test Methods
A.1 General
Unless otherwise specified, reagent and water in this Standard refer to analytic reagent
and Grade-3 water as specified in GB/T 6682-2008.Unless otherwise specified, standard
titration and reagent solutions used for determination of impurities shall be prepared in
accordance with GB/T601, GB/T 602 and GB/T 603.The solution used in test which is not
indicated with preparation method refers to aqueous solution.
A.2 Identification test
A.2.1 Put 2ml of ethanol solution (0.5%) in test tube; add 1 to 2 drops of cadmium chloride.
White precipitate is generated.
A.3 Test of insoluble substance — n-hexane
A.3.1 Reagent and substance
n-hexane.
A.3.2 Instruments
A.3.2.1 Suction filter. 500 ml.
A.3.2.2 Sand core glass crucible. G3.
A.3.3 Operation steps
A.3.3.1 Put a clean crucible in a 101°C ~ 105°C drying oven to bake to constant weight.
A.3.3.2 Take 10.0g of mixed samples (accuracy. 0.0001g); put it in beaker. Add 100ml of
n-hexane; stir the solution with glass rod to fully dissolve. Extract and filter through
constant-weight crucible.
A.3.4 Calculation
The content of insoluble substance - n-hexane w1 (the value is expressed by
percentage, %) is calculated according to Formula (A.1).
A.4 Test of acid value
A.4.1 Reagent and substance
A.4.1.1 Petroleum ether
A.4.1.2 Standard sodium hydroxide solution. c(NaOH) = 0.1 mol/L.
A.4.2 Operation steps
Weigh about 2g of mixed samples (accurate to 0.001 g); put it in a 250 mL conical flask.
Add 50ml of petroleum ether. Shake lightly to fully dissolve. Add 50ml of neutral ethanol;
shake well. Add 4 drops of phenolphthalein indicator solution; use sodium hydroxide
standard titration solution to rapidly titrate; shake while titrating. When it is closing to the
end, the speed of titration shall be slowed down to 1 to 2 drops per time, until the solution
appears in pink and maintains for 5s without fading off as the end.
A.5 Test of peroxide value
A.5.1 Reagent and substance
A.5.1.1 The mixed solution of acetic acid and chloroform. volume ratio is 3.2.Mix 3
portions of glacial acetic acid and 2 portions of chloroform together.
A.5.2 Instruments
The common laboratory instruments shall apply. All the used instruments shall not contain
reductive or oxidizing substances. The surface of ground glass shall not be coated with
oil.
A.5.3 Operation steps
Take 5g of mixed samples (accurate to 0.001g); put it in a 250 mL iodine flask. Add 30ml
of mixed solution of glacial acetic acid and chloroform. Shake it to fully dissolve. Add 0.5ml
of saturated potassium iodide solution; put cover on it.
Peroxide value w3, the value is expressed by milligram equivalent of active oxygen per
kilogram meq/kg, is calculated according to Formula (A.3).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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