GB 1886.310-2020 English PDF (GB1886.310-2020)

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GB 1886.310-2020: National food safety standard - Food additive - Rosa laevigata michx brown
GB 1886.310-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
National food safety standard - Food additive - Rosa
laevigata Michx brown
ISSUED ON: SEPTEMBER 11, 2020
IMPLEMENTED ON: MARCH 11, 2021
Issued by: National Health Commission of the People's Republic of China;
State Administration for Market Regulation.
Table of Contents
1 Scope ... 3 
2 Technical requirements ... 3 
Annex A Inspection methods ... 4 
National food safety standard - Food additive - Rosa
laevigata Michx brown
1 Scope
This Standard is applicable to the food additive Rosa laevigata Michx brown
that uses Rosa laevigata Michx fruit as raw material and is obtained through
water or ethanol solution extraction, refining, concentration and drying.
2 Technical requirements
2.1 Sensory requirements
Sensory requirements shall meet the requirements of Table 1.
Table 1 -- Sensory requirements
2.2 Physical and chemical indicators
Physical and chemical indicators shall meet the requirements of Table 2.
Table 2 -- Physical and chemical indicators
Annex A
Inspection methods
A.1 General
The reagents and water used in this Standard refer to analytically-pure reagents
and grade 3 water specified in GB/T 6682 when other requirements are not
indicated. The standard solutions used in the test, standard solutions for
impurity determination, preparations and products are prepared in accordance
with GB/T 601, GB/T 602, and GB/T 603 when other requirements are not
specified. The solution used in the test refers to aqueous solution when it is not
specified which solvent is used for preparation.
A.2 Identification test
A.2.1 Reagents and materials
A.2.1.1 Ferric chloride solution: 1%. Accurately weigh 1.00g of ferric chloride
(FeCl3). Use water to dissolve and set volume to 100mL.
A.2.1.2 Sodium chloride aqueous solution: 10%. Accurately weigh 1.00g of
sodium chloride (NaCl). Use water to dissolve and set volume to 100mL.
A.2.1.3 Gelatin solution: 0.5%. Accurately weigh 0.50g of gelatin. Use water to
dissolve and set volume to 100mL. And mix with 10% sodium chloride aqueous
solution (A. 2.1.2) in equal volume.
A.2.2 Ferric chloride reaction
Weigh 0.2g of sample. Use water to dissolve. Transfer to a 100mL volumetric
flask. Set volume. Take 1mL of the above solution in a test tube. Add 3 drops of
ferric chloride solution (A.2.1.1). Mix well. A reddish-brown precipitate appears
after placing still for 5min.
A.2.3 Gelatin reaction
Weigh 1.0g of sample. Use water to dissolve. Transfer to a 100mL volumetric
flask. Set volume. Take 1mL of the above solution. Add 4 drops of gelatin
solution (A.2.1.3). Brown-black precipitation appears after placing still for 15min.
A.3 Determination of pH (1% solution)
Weigh 1.0g of sample. Use water to dissolve. Transfer to a 100mL volumetric
flask. Set volume. Use a pH meter to measure the solution’s pH.