GB 28366-2012Food additive -- 2-ethyl-4-hydroxy-5-methyl-3 (2H)-furanone (English PDF)

1 Scope

This standard is applicable to 2-ethyl-4-hydroxy-5-methyl-3-methyl-2-propene, a food additive made from diethyl oxalate and ethyl chloroacetate (2H) -furanone.

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 yellow State liquid Place the sample in a colorimetric tube with a visual method Observed Aroma sweet fruity, caramel flavor, Scottish milky - like aroma 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 2-ethyl-4-hydroxy-5-methyl-3 (2H) -furanone Content, w /% >= 96.0 Appendix A Refractive index (20 ° C) 1.508 ~ 1.514 GB/T 14454.4 Relative density (25 °C/25 °C) 1.133 ~ 1.143 GB/T 11540 Appendix A Determination of 2 - ethyl - 4 - hydroxy - 5 - methyl - 3 (2H) - furanone 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.

A.3 repeatability and result representation According to GB/T 11538-2006 11.4 implementation of the provisions.

Food additives 2-ethyl-4-hydroxy-5-methyl-3 (2H) -furanone Typical gas chromatograms (area normalization) See Appendix B.

Appendix B

Food Additive 2-Ethyl-4-hydroxy-5-methyl-3 (2H) -furanone Typical Gas Chromatography (Area normalization method) B.1 Food Additive 2-Ethyl-4-hydroxy-5-methyl-3 (2H) -furanone Typical Gas Chromatography Food additives 2-ethyl-4-hydroxy-5-methyl-3 (2H) -furanone Typical gas chromatograms are shown in Figure B.1.

Figure B.1 Food Additive 2-Ethyl-4-hydroxy-5-methyl-3 (2H) -furanone Typical Gas Chromatography

B.2 Operating conditions B.2.1 Column. capillary column, length 30m, inner diameter 0.32mm.

B.2.2 Stationary phase. modified polyethylene glycol.

B.2.3 Film thickness. 1.0 µm.

B.2.4 chromatographic furnace temperature. 80 °C constant temperature 1min, and then linear program temperature from 80 °C ~ 220 °C, the rate of 10 °C/min, 220 °C constant Temperature 20min.

B.2.5 Inlet temperature. 240 ° C.

B.2.6 Detector temperature. 240 ° C.

B.2.7 Detector. Hydrogen flame ionization detector.

B.2.8 Carrier gas. nitrogen.

B.2.9 Carrier gas flow rate. 20 mL/min.

B.2.10 Injection volume. about 3 µL.

B.2.11 Split ratio. 1/243.