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Simultaneous measuring method of various feeding condiments

A method of determination and technology of flavoring agents, applied in the field of chemical analysis, can solve problems such as low detection efficiency, unsuitability for large-scale sample detection, inability to detect multiple flavoring agents at the same time, and achieve good repeatability

Inactive Publication Date: 2014-03-12
ARMY MEDICAL UNIV
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Problems solved by technology

However, most of the existing high-performance liquid chromatography methods have the following problems: for different flavoring agents, different liquid chromatographic conditions need to be used for detection separately, and multiple flavoring agents cannot be detected at the same time, the detection efficiency is low, and it is not suitable for large-scale samples detection

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  • Simultaneous measuring method of various feeding condiments
  • Simultaneous measuring method of various feeding condiments
  • Simultaneous measuring method of various feeding condiments

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Embodiment Construction

[0023] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] 1. Preparation of mixed standard solution

[0025] Accurately weigh the standard substances of flavoring agent I+G, acesulfame potassium, sodium saccharin, vanillin, maltol, ethyl maltol and NHDC, respectively dissolve and dilute with water to make a single standard stock with a concentration of 20.00mg / mL Accurately pipette 2.50mL of each of the above seven single standard stock solutions into a 25mL volumetric flask, dilute with water to make a mixed standard working solution with a concentration of 2.00mg / mL; then dilute the mixed standard working solution with water to make a concentration of It is a series of mixed standard solutions of 1.00, 0.50, 0.20, 0.10, 0.04 mg / mL.

[0026] 2. Preparation of sample solution

[0027] Accurately weigh the flavoring agent sample, add water and ultrasonically extract for 10 minutes, centrif...

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Abstract

The invention discloses a simultaneous measuring method of various feeding condiments. An efficient liquid-phase chromatography is adopted, octadecylsilane chemically bonded silica is used as a filling agent, column temperature is 30 DEG C, flow velocity is 1.0 mL / minute, and A (acetonitrile) and B (trifluoroacetic acid liquor with mass fraction of 0.1%, and pH of the trifluoroacetic acid liquor is regulated to 4.0 by triethylamine) are used as mobile phases to carry out gradient elution and 229nm-282nm variable-wavelength detection, so that content of 7 feeding condiments (I+G, acesulfame potassium, saccharin sodium, vanillin, maltol, ethyl maltol and NHDC (Dihydrochlcone) can be simultaneously measured, and therefore, the simultaneous measuring method is accurate and sensitive in detection, good in repeatability, economic and efficient, time-saving and labor-saving.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis, and relates to a content determination method of a flavoring agent for feed. Background technique [0002] Scientific research has shown that feed intake determines the growth rate of animals to a large extent. Animals that gain weight in the early stage maintain a growth advantage until their weight reaches the market and can reach the market weight earlier. Therefore, the industry needs to do more to ensure that animals consume as much feed as possible. This also means that improving the palatability of feed is one of the important tasks that cannot be ignored in the future animal husbandry industry. At present, in order to prevent animals from being infected by foreign diseases, more additives such as vitamins and various drugs are added to the feed, and the addition of additives also causes the feed to have a bitter taste. In addition, the various raw materials used in the feed in...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/02
Inventor 李兰兰赵华文杨旭赵先英贺建向星
Owner ARMY MEDICAL UNIV
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