GB 1886.199-2016Food additive -- Natural menthol (English PDF)

2.1 Chemical Name

l-1- methyl-4-isopropyl-cyclohexanol -3 Formula 2.2 C10H20O

2.3 Formula

2.4 Relative molecular mass

156.27 (according to 2007 international relative atomic mass)

3.1 Sensory requirements

Sensory requirements shall comply with the requirements of Table 1.

Table 1 Sensory requirements

Project requires test methods Color colorless State transparent prismatic or needle-like crystals the sample is placed on a clean white paper, were visually observed Pleasant aroma of mint-like aroma GB/T 14454.2

3.2 Physical and Chemical Indicators

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

Table 2. Physical and chemical indicators

Item Index Test Method Solubility (25 °C) 1g sample soluble in 5mL90% (volume fraction) ethanol GB/T 14455.3 Menthol, w /% >= 99.0 Appendix A Melting range/°C 41.0 ~ 44.0 GB/T 14457.3 After evaporation residue content /% <= 0.05 GB/T 14454.6 Specific rotation (25 °C) -50 ° ~ -49 ° GB/T 14454.5 Appendix A Determination of Menthol A.1 instruments and equipment A.1.1 chromatograph. According to GB/T 11538-2006 provisions in Chapter 5.

A.1.2 Column. capillary column.

A.1.3 Detector. Hydrogen flame ionization detector.

A.2 Determination

Area normalization method. According to GB/T 11538-2006 10.4 Determination.

Sample Preparation. Weigh 2g sample was dissolved in 1mL of anhydrous ethanol, shake spare.

A.3 repeatability and results are shown According to GB/T 11538-2006 provisions in 11.4, shall comply with the requirements.

Food Additives Menthol gas chromatograph and operating conditions, see Appendix B.

Appendix B

Food additives natural menthol gas chromatograph and operating conditions (Area normalization method) B.1 food additives natural menthol gas chromatogram Food additives natural menthol GC is shown in Figure B.1.

Explanation.

1 --- Ethanol (solvent);

2 --- menthol.

Figure B.1 food additives natural menthol gas chromatogram

B.2 operating conditions B.2.1 Column. capillary column length 30m, an inner diameter of 0.25mm.

B.2.2 stationary phase. Polyethylene glycol 20000.

B.2.3 film thickness. 0.25µm.

B.2.4 chromatography oven temperature. linear temperature program from 100 °C to 150 °C, the rate of 2.5 °C/min, and then heated at 150 °C 10min.

B.2.5 inlet temperature. 230 °C.

B.2.6 detector temperature. 250 °C.

B.2.7 Detector. Hydrogen flame ionization detector.

B.2.8 carrier gas. nitrogen.

Before B.2.9 column pressure. 103kPa B.2.10 Injection volume. 0.1µL.

B.2.11 Split ratio. 100.1.