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Analysis of Cholesterol Content in Milk Tea Beverages by Gas Chromatography
Product Introduction: We are honored to recommend the gas chromatography hydrogen flame ionization detector method for the determination of cholestero
Product details
brand ZKP/Zhongkepu

Tengzhou Zhongkepu is a professional manufacturer of gas chromatographs and portable chromatography equipment. The equipment produced complies with national standards and is favored and recognized by users in the market. The following are the detailsAnalysis of Cholesterol Content in Milk Tea Beverages by Gas ChromatographyDetailed analysis of price, usage method, instrument structure, and service system:

Product introduction: With the continuous improvement of living standards, the content of cholesterol in dietary composition has attracted more and more attention from people. Cholesterol deposition in the biliary tract can form gallstones, and cholesterol deposition in blood vessels is one of the important causes of arteriosclerosis. Milk tea is a very popular beverage nowadays, and various milk tea drinks can be seen everywhere in the market. The detection of cholesterol in milk tea has become important. Regarding the determination of cholesterol, traditional methods include: iron perchlorate colorimetric method, ortho benzaldehyde colorimetric method, phosphorus sulfur iron colorimetric method, ammonium iron sulfate colorimetric method, etc. However, these methods all have problems such as complicated operation, large errors, and poor reproducibility. There are currently many articles on the detection of cholesterol using gas and liquid chromatography methods, but there are few reports on the detection of cholesterol in liquid samples, and the extraction of cholesterol in these methods generally requires acid or alkaline hydrolysis, which is time-consuming. This method utilizes the characteristics of liquid samples and adopts a direct extraction method, greatly reducing the sample analysis time and minimizing the use of organic reagents. After verification, this method is economical, simple, and a fast and efficient method for detecting cholesterol content in liquid foods.

Analysis principle: Establish an application gas chromatograph-Rapid detection method for cholesterol content in milk tea beverages using hydrogen flame ionization detector. method:Add a certain amount of anhydrous sodium sulfate to the sample,Petroleum ether as extraction solution,After ultrasonic extraction,high speed centrifugation,Using capillary chromatography column and hydrogen flame ionization detector of gas chromatograph(FID)Separate and detect the supernatant using this method,Cholesterol and impurities can be well separated

Gas chromatography analysis spectrum

Instrument configuration and reagents

product name

configuration

quantity

Gas chromatograph host

GC-2020Equipped with (hydrogen flame detector+capillary injection port)

1tower

data processing

Chromatography workstation

1cover

chromatographic column

DB - 17010.32mm*30m*0.25umcapillary column

1only

External air source

Nitrogen hydrogen air cylinder or generator

1cover

Sample processing

centrifuge;Nitrogen blowing instrument;Glass instruments such as stoppered test tubes and volumetric flasks

1 set each

computer

Brand computer XP system

1tower

reagent

petroleum etherAnhydrous sodium sulfateCholesterol solid purity99%

GC-2020 gas chromatographPerformance characteristics

1. Adopting320 x 240dot matrix5.7An inch large screen LCD Chinese display, real-time display of various temperatures and operating conditions, clear and intuitive content, truly realizing human-machine dialogue;
2Power on self-test, wide range self diagnostic function, can accurately determine the fault location and alarm;
3Six independent temperature controls (vaporization chamber and capillary vaporization chamber can be independently controlled), Five level program heating function;
4Overtemperature Protection function: If any circuit exceeds the set temperature, the instrument will automatically power off and sound an alarm;
5The vertical heating device of * makes sample vaporization more reliable, reduces the heat radiation generated in the vaporization chamber to the minimum, and ensures minimal temperature deviation inside the column box;
6Intelligent fuzzy control rear door opening system, automatically tracks temperature and dynamically adjusts The angle of the air door can achieve precise temperature control even near room temperature;
7Configure filling column head injection, glass lining injection, with diaphragm cleaning Functional capillary diversion/Non split injection device and capable of installing gas injectors;
8High precision dual stable gas path, capable of installing four types of detectors simultaneously;
9
Optional electronic flow pressure display system with built-in workstation device.

Temperature control indicators
1.Temperature control range: room temperature 5400 increment0.1
2.Temperature control accuracy: superior to±0.01

Program heating: Five step interval constant temperature time0999minincrement0.1minTemperature increment0.1
Heating rate:200The biggest one below40/min 200Up to the biggest20/min

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