1、 Instrument features
The application of gas chromatography in the analysis of Baijiu mainly includes the following aspects:
1. Monitoring the Hygienic Indexes of Baijiu
Methanol and fusel oil in Baijiu have two important indicators for liquor hygiene monitoring. Gas chromatography can directly analyze the content of methanol and fusel oil in the finished product. The method is simple and rapid, with good precision, and the relative deviation is less than 5%. At the same time, higher alcohols such as n-propanol, isobutanol, n-butanol, isoamyl alcohol, and n-amyl alcohol in Baijiu can be determined separately.
2. Determination of three indicators for the basic liquor of the distillery
The quality of the base liquor will determine whether the finished liquor can meet the quality standards. The analysis and acceptance of base liquor, as well as the determination of major trace components, are important factors in guiding microcomputer blending, ensuring stable product quality, unifying quality standards, and achieving economic benefits for factories. Gas chromatography is an important analytical tool.
3. Carry out research on the relationship between the analysis of aroma components and flavor of Baijiu
The ingredients of Baijiu are very complex, and the relationship between some important ingredients in liquor and the typical flavor of liquor has not yet been recognized. It is necessary for the technical personnel of the distillery to use the important analytical tools of gas chromatograph and cooperate with other instruments to carry out the analysis of a variety of complex trace components other than alcohol and alcohol, so as to provide a broader and accurate scientific basis for ensuring famous, special and excellent Baijiu products.
4. For health and epidemic prevention stations at all levels and product quality inspection institutes of technical supervision bureaus at all levels, gas chromatographs can be used to strengthen market management and crack down on fake and inferior Baijiu products.
Instrument model: GC9800 (FID) chromatographic column: capillary column for Baijiu
Serial number, retention time, name, concentration, peak area
──────────────────────────────
1 2.281 Acetaldehyde 0 7080
2 2.580 methanol 0 6954
3 3.268 Ethanol 0 7334465
4 3.408 Ethyl acetate 0 23064
5 3.898 n-propanol 0 19321
6 4.139 Acetal 0 10065
7 4.347 sec butanol 0 6032
8 5.159 isobutanol 0 8420
9 6.181 n-butanol 0 7433
10 6.447 Ethyl Butyrate 0 8717
11 7.190 n-butyl acetate 0 16794
12 8.004 Isopentanol 0 9295
13 10.918 Ethyl lactate 0 8179
14 12.276 Ethyl hexanoate 0 48034
──────────────────────────────
Total 0 7513853