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Method used for detecting dextrin content of health food via mid-infrared spectrum technology

A technology of technical detection and health food, applied in the direction of color/spectral characteristic measurement, etc., can solve the problem of no determination of dextrin addition, etc., and achieve the effect of easy popularization and application, and simple measurement and operation

Inactive Publication Date: 2015-07-22
天津优标技术检测服务有限公司
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Problems solved by technology

However, at present, there is no report that the combination of molecular spectroscopy and computer technology can quickly determine the addition of dextrin in health food

Method used

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  • Method used for detecting dextrin content of health food via mid-infrared spectrum technology
  • Method used for detecting dextrin content of health food via mid-infrared spectrum technology
  • Method used for detecting dextrin content of health food via mid-infrared spectrum technology

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Embodiment 1

[0022] A method for detecting dextrin content in health food by mid-infrared spectroscopy, comprising the following steps:

[0023] (1) Tabletting and scanning of potassium bromide blank tablets: Accurately weigh 200 mg of dried potassium bromide fine powder; Put it in a compression mold with a diameter of 13mm, spread it evenly, pressurize to 0.8Gpa, and keep it for 1min. Scan in the scanning room of the Lie leaf infrared spectrometer to obtain a standard blank spectrum;

[0024] (2) Tablet pressing and scanning of dextrin standard samples: precisely weigh 3 mg of dextrin that has been crushed through an 80-mesh sieve, and precisely weigh 200 mg of dried potassium bromide fine powder, and place them in an agate mortar to fully grind and mix until fine powder, move the fine powder into a die with a diameter of 13mm, spread it evenly, pressurize to 0.8Gpa, and keep it for 1min to make a dextrin standard sample sheet, which is uniform and has no obvious particles by visual insp...

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Abstract

The invention discloses a method used for detecting dextrin content of health food via mid-infrared spectrum technology. The method comprises following steps: (1) tabletting and scanning of potassium bromide blank tablets are carried out so as to obtain a standard bland spectrogram; (2) tabletting and scanning of a dextrin standard sample are carried out so as to obtain a dextrin standard sample spectrogram; (3) tabletting and scanning of dextrin standard samples with different concentration are carried out so as to obtain spectrograms of dextrin standard samples of different concentration; (4) tabletting and scanning of samples to be detected are carried out so as to obtain a spectrogram of the samples to be detected; and (5) the spectrogram of the samples to be detected and the spectrograms of the dextrin standard samples of different concentration are subjected to similarity comparison using Fourier infrared spectrometer compare software so as to determine dextrin mass content of the samples to be detected. No strict requirement on state of the samples to be detected is made; the method can be applied on samples in gaseous state, liquid state, and solid state; the method is simple and rapid; only simple processing, such as physical smashing and tabletting, of the samples is needed; the samples can be subjected to direct testing without tedious separation process; universal equipment is used; and measuring operation is simple.

Description

technical field [0001] The invention relates to a method for detecting dextrin content in health food by mid-infrared spectrum technology. Background technique [0002] Due to the loose control of the addition of excipients in health food, extensive processing technology, and backward inspection methods, etc., the excipients in the product will exceed the standard or even all dextrin. Therefore urgently need a kind of method of rapid detection dextrin content in health food. [0003] The fundamental basis of mid-infrared spectroscopy technology is that mid-infrared spectroscopy has fingerprints. Their microscopic fingerprinting has long been a consensus. The molecular spectrum of a pure compound reflects the vibration frequency spectrum of various groups present in the molecule with fingerprint characteristics. It has become one of the methods for identification (different) of simple compounds or western medicines. For the mixture system of health food, the peak position...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 李星芝王俊全李凡
Owner 天津优标技术检测服务有限公司
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