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GB 1886.176-2016Food additive -- Lactulose liquid (English PDF)

食品安全国家标准食品添加剂异构化乳糖液

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Issued by

National Health and Family Planning Commission of PRC

Level / Type

National · Mandatory

Issue date

August 31, 2016

Implementation date

January 1, 2017

Scope

GB 1886.176-2016 is the English-translated version of 食品安全国家标准食品添加剂异构化乳糖液.

GB 1886.176-2016 - This standard applies to food additive isomerized lactose liquids, which are prepared from lactose as raw material by isomerization, with or without alkali under heating conditions, OR the solid products prepared by drying afterwards.

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Document preview — GB 1886.176-2016

National Standard of the People's Republic of China

Issued by: National Health and Family Planning Commission of PRC

Foreword...3
1 Scope...4

Foreword

This standard replaces GB 8816-1988 "Food additive - Lactulose liquid".

Compared with GB 8816-1988, the main changes in this standard are as follows:

- MODIFY the sensory requirements;

- MODIFY the index requirements for isomerized lactose content, fructose content,

galactose content, lactose content, arsenic (As);

- DELETE the index requirements for specific gravity, refractive index, coliform

bacteria;

- ADD the index requirements and testing methods for epilactose content, pH,

ignition residue, Escherichia coli;

- ADD the identification test methods;

- MODIFY the testing methods for isomerized lactose content, fructose content,

galactose content, lactose content;

- UPDATE the normative references of some inspection methods to the latest

published versions.

National food safety standard - Food additives - Propionic

acid

1 Scope

This standard applies to food additive isomerized lactose liquids, which are prepared

from lactose as raw material by isomerization, with or without alkali under heating

conditions, OR the solid products prepared by drying afterwards.

2 Structural formula, molecular formula, relative molecular

mass of the main components

2.1 Structural formula

2.2 Molecular formula

C12H22O11

2.3 Relative molecular mass

342.30 (according to 2011 international relative atomic mass)

3 Technical requirements

3.1 Sensory requirements

Sensory requirements shall comply with Table 1.

Appendix A

Testing method

A.1 General provisions

Unless other requirements are specified, the reagents and water used in this standard

refer to analytically pure reagents and grade three water specified in GB/T 6682. Unless

other requirements are specified, the standard solutions, standard solutions for impurity

determination, preparations and products used in the test shall be prepared in

accordance with the provisions of GB/T 601, GB/T 602, GB/T 603. The solutions used

in the test refer to aqueous solutions, unless the solvent used to prepare them is specified.

A.2 Identification test

In the determination test of isomerized lactose content, the retention time of the main

peak in the chromatogram of the specimen solution shall be consistent with the retention

time of the main peak in the chromatogram of the standard solution (see Figure B.1).

A.3 Determination of the content of isomerized lactose, fructose, galactose,

epilactose, lactose

A.3.1 Reagents and materials

A.3.1.1 Water: Grade 1 water in compliance with GB/T 6682.

A.3.1.2 Acetonitrile: Chromatographically pure.

A.3.1.3 Isomerized lactose standard, fructose standard, galactose standard, epilactose

standard, lactose standard: Purity >= 99.0%.

A.3.1.4 Phosphate buffer: Weigh 1.15 g of anhydrous sodium dihydrogen phosphate;

dissolve it in water; make the volume reach to 1000 mL.

A.3.2 Instruments and equipment

A.3.2.1 High performance liquid chromatograph, which is equipped with a differential

refractive index detector, constant column temperature, vacuum degassing system.

A.3.2.2 Chromatographic column: Amino column (Phi4.6 mm × 15 cm, packing particle

size 3 µm) with fully porous silica gel as filler or other equivalent chromatographic

column.

A.3.3 Reference chromatographic conditions

A.3.3.1 Mobile phase: Acetonitrile: phosphate buffer = 82:18.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 4 pages — is available in the English PDF.

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