GB 28348-2012Food additives -- Methyl cinnamate (English PDF)

1 Scope

This standard applies to cinnamic acid or cinnamon oil as raw materials prepared by the food additives methyl cinnamate.

2 Chemical name, molecular formula, structural formula and relative molecular mass

3 Technical requirements

3.1 sensory requirements. should be consistent with the provisions of Table 1.

Table 1 sensory requirements

The project requires a test method Color white to yellowish State block crystal Place the sample on a clean white paper Visual observation Aroma fruity, pasta GB/T 14454.2

3.2 Physical and chemical indicators. should be consistent with the provisions of Table 2.

Table 2 Physical and chemical indicators

Item Index Test Method Methyl cinnamate content, w /% >= 98.0 Appendix A Acid value (in KOH)/(mg/g) <= 2.0 GB/T 14455.5 Appendix A Determination of methyl cinnamate content A.1 Instruments and equipment A.1.1 chromatograph. according to GB/T 11538-2006 in Chapter 5 of the provisions.

A.1.2 Column. Capillary column.

A.1.3 Detector. Hydrogen flame ionization detector.

A.2 Determination method Area normalization method. according to GB/T 11538-2006 10.4 determination of content.

Sample preparation. Weigh this product 1g dissolved in 5mL anhydrous ethanol, slightly hot, shake back standby.

A.3 repeatability and result representation According to GB/T 11538-2006 11.4 provisions, should meet the requirements.

Food Additives Cinnamate Typical Gas Chromatography (Area Normalization) See Appendix B.

Appendix B

Food Additives Cinnamate Typical Gas Chromatography (Area normalization method) B.1 Food additive Methyl cinnamate Typical gas chromatogram Food additives methyl cinnamate Typical gas chromatograms are shown in Figure B.1.

Description.

1 --- solvent;

2 --- methyl cinnamate.

Figure B.1 Typical additive for food additives methyl cinnamate

B.2 Operating conditions B.2.1 Column. capillary column, length 30m, diameter 0.53mm.

B.2.2 Stationary phase. Dimethylpolysiloxane.

B.2.3 Film thickness. 1.5 µm.

B.2.4 Chromatographic furnace temperature. linear program temperature from 150 °C ~ 180 °C, the rate of 3 °C/min, and then from 180 °C ~ 250 °C, the rate 10 °C/min, and finally at 250 °C constant temperature 10min.

B.2.5 Inlet temperature. 250 ° C.

B.2.6 Detector temperature. 260 ° C.

B.2.7 Detector. Hydrogen flame ionization detector.

B.2.8 Carrier gas. nitrogen.

B.2.9 Carrier gas flow rate. 1.5 mL/min.

B.2.10 Injection volume. 0.2 µL.

B.2.11 Split ratio. 1/40.