Method for detecting garlicin by mercury nitrate precipitation method

A technology of mercury nitrate and allicin, which is applied in the chemical industry, can solve the problems of complicated steps and low accuracy, and achieve the effect of simple operation and less time-consuming

Inactive Publication Date: 2016-04-20
张瑞节
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The detection of allicin is involved in the extraction or production process. Most of the existing detection methods are complicated in steps. Generally, the content of allicin is not obtained directly, and the accuracy is not high.

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  • Method for detecting garlicin by mercury nitrate precipitation method
  • Method for detecting garlicin by mercury nitrate precipitation method
  • Method for detecting garlicin by mercury nitrate precipitation method

Examples

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Embodiment 1

[0024] A method for detecting allicin by mercury nitrate precipitation method, the steps are as follows:

[0025] (1) get garlic extract W after removing impurities such as protein through excessive trichloroacetic acid, centrifuge and get supernatant;

[0026] (2) supernatant is reacted with excess mercuric nitrate standard solution to generate a milky white precipitate, and the consumption of mercuric nitrate standard solution is recorded as V1;

[0027] (3) With ferric ammonium sulfate as indicator, titrate the remaining mercuric nitrate solution with potassium thiocyanide standard solution, calculate and obtain the allicin content by the following formula:

[0028]

[0029] In the formula: M1—the molar concentration of mercury nitrate standard solution, mol / L

[0030] V1—the number of milliliters of mercury nitrate standard solution, mL

[0031] M2—molar concentration of potassium thiocyanate standard solution, mol / L

[0032] V2—the number of milliliters of potassium...

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Abstract

The invention relates to a method for detecting garlicin by a mercury nitrate precipitation method. the method of the invention comprises the following steps: (1) removing impurities such as protein from a garlic extracting solution by the use of trichloroacetic acid, centrifuging and fetching a supernatant; (2) carrying out a reaction between the supernatant and excessive mercury nitrate to generate a milk white precipitate; and (3) using ammonium ferric sulfate as an indicator, carrying out titration on the rest mercury nitrate solution by the use of a KSCN solution, and calculating content of garlicin by the formula (I). The detection method of garlicin can be adopted to directly detect content of garlicin, is simple to operate, and is less time-consuming.

Description

technical field [0001] The invention relates to a method for detecting allicin by a mercury nitrate precipitation method, which belongs to the technical field of chemical industry. Background technique [0002] The origin of garlic is in West Asia and Central Asia. It has a history of more than 2,000 years since Zhang Qian of the Han Dynasty went to the Western Regions and brought it back to Guoan to settle down. Garlic is the underground bulb of the Allium plant in the Liliaceae family. According to monitoring, every 100 grams of garlic contains 69.8g of water, 4.4g of crude protein, 0.2g of fat, 23.6g of carbohydrates, 0.7g of crude fiber, 1.3g of ash, and 5mg of calcium. , iron 0.4mg, thiamine 0.24mg, riboflavin 0.03mg, niacin 0.9mg and ascorbic acid 3mg. Garlic contains 17 kinds of amino acids, 8 of which are necessary for the human body. In addition, garlic also contains propylene sulfide, allicin and trace elements such as selenium, germanium, zinc, etc., so garlic ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
Inventor 张瑞节
Owner 张瑞节
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