GB 1886.136-2015National Food Safety Standard -- Food Additives -- Butyric acid benzyl ester (English PDF)

2.1 Chemical Name

Butyrate or butyrate ester Formula 2.2 C11H14O2

2.3 Formula

2.4 Relative molecular mass

178.23 (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 Liquid state the sample was placed in a cuvette, were visually observed Aroma has a strong fruity - floral, plum-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) 1mL sample soluble in 2mL80% (volume fraction) ethanol GB/T 14455.3 Butyric acid benzyl ester content, w /% >= 98.0 Appendix A Acid value (in dollars KOH)/(mg/g) <= 1.0 GB/T 14455.5 Refractive index (20 °C) 1.4900 ~ 1.5000 GB/T 14454.4 the relative density (25 °C/25 °C) 1.005 ~ 1.012 GB/T 11540 Appendix A Determination of butyric acid benzyl ester 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 Performed according to GB/T 11538-2006 11.4 provisions.

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

Appendix B

Food additive gas chromatogram butyrate (Area normalization method) B.1 food additive gas chromatogram butyric acid benzyl ester Food additives, butyric acid benzyl ester gas chromatography is shown in Figure B.1.

Figure B.1 food additives butyrate gas chromatogram

B.2 operating conditions B.2.1 Column. capillary column length 30m, an inner diameter of 0.53mm.

B.2.2 stationary phase. 100% dimethyl polysiloxane.

B.2.3 film thickness. 1.5µm.

B.2.4 chromatography oven temperature. linear temperature program from 130 °C ~ 180 °C, the rate of 3 °C/min; then linear temperature program from 180 °C ~ 250 °C, rate of 10 °C/min; and finally at 250 °C with 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. 1.5mL/min.

B.2.10 Injection volume. 0.2µL.

B.2.11 split ratio. 40.1.