GB 29979-2013Food additive -- Linalool oxide standards: food additives food additives specified standards oxidized linalool (English PDF)

2.1 Chemical Name

2-methyl-5- (1-hydroxy-1-methylethyl) -2-vinyl tetrahydrofuran Formula 2.2 C10H18O2

2.3 Formula

O OH

(Furan-type)

2.4 Relative molecular mass

170.25 (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 to pale yellow color of the sample is placed over the inner tube, were visually observed Liquid state Intense sweet aroma - woody aroma with floral bottom rhyme 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 Linalool oxide content (sum of cis and trans isomers), w /% >= 95.0 Appendix A Acid value (in dollars KOH)/(mg/g) <= 3.0 GB/T 14455.5 Refractive index (20 °C) 1.451 ~ 1.456 GB/T 14454.4 the relative density (25 °C/25 °C) 0.938 ~ 0.948 GB/T 11540 Appendix A Determination of linalool oxide content 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.

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

Food Additives linalool oxide gas chromatograph (area normalization method) See Appendix B.

Appendix B

Food additives linalool oxide gas chromatogram (Area normalization method) B.1 food additives linalool oxide gas chromatogram

Figure B.1.

1-- cis-linalool oxide;

2-- trans-linalool oxide.

Figure B.1 food additives linalool oxide gas chromatogram

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

B.2.2 stationary phase. 100% dimethyl polysiloxane.

B.2.3 film thickness. 0.25 µm.

B.2.4 chromatography oven temperature. 110 °C constant temperature.

B.2.5 inlet temperature. 210 °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 pre-column pressure. 60 kPa.

B.2.10 Injection volume. 0.1 µL.

B.2.11 split ratio. 100︰1.