3-methylthiopropyl alcohol, also known as pineapple alcohol, has a strong onion taste, dilution will appear soy sauce smell, mainly used for sauce seasoning, belongs to the edible spices allowed to use by the state. 3-methylthiopropyl alcohol was identified as the characteristic flavor substance of sesame-flavor liquor, and the appropriate detection method of 3-methylthiopropyl alcohol was very important to improve the quality of sesame-flavor liquor.
According to the national standard requirements of GB/T 20824-2007 sesame flavor liquor, the content of 3-methanethiol should be detected. In this experiment, the instrument we used was GC7900 gas chromatograph with flame photometric detector. All the gas path of the instrument is fully EPC control, all operations can be operated on the computer, simple operation, multi-point correction, correlation coefficient of 0.999 or more, in line with the national standard requirements.
1. Detection components:
3-methylthiol propyl alcohol
2.instrument configuration:
Gas chromatograph: Flame photometric detector
Chromatographic column: HT-930 30m*0.32mm*0.5μm
Standard liquid: 3-methylthiyl propyl alcohol standard liquid
Carrier gas cylinder gas: nitrogen, hydrogen, air
3. Experimental conditions
Detector: 220℃
Injector: 200℃
Column temperature: 100℃ (2min) 10℃/min to 180℃ (10min)
