CN101153843A - A rapid analysis method for ginseng components - Google Patents

Abstract

The invention relates to a method for rapid analysis of ginseng components, which uses 12 optimized near-infrared wavelengths to carry out spectrum testing on ginseng powder samples. On the module (2), the collimated irradiation module (2) turns the light beam into parallel light, and the parallel light shines on the optical filter disc (3), and is transmitted to the sample cell (5) through the filter light sheet, and the light beam irradiates the sample cell ( 5) Afterwards, diffuse emission occurs, and the diffuse emission light spectrum containing the sample composition information is received by the photoelectric sensor (6) and converted into an electrical signal, the electrical signal is amplified by the amplifier (7), and modeled by the data conversion storage and calculation module (8) Processing, the test result is output by the result display and printout module (9). The invention has the advantages of simple operation, low cost, short measurement time, hundreds of times higher efficiency, and satisfies the need of real-time control in the production and processing of ginseng.

Description

A rapid analysis method for ginseng components

technical field

The invention belongs to the field of spectrum technology, and relates to a method for rapidly analyzing ginseng components by using specific near-infrared spectrum.

Background technique

The components that affect the quality and efficacy of ginseng are mainly ginseng total saponins, ginseng total sugar and water content. Conventional methods to measure these components need to use spectrophotometer, colorimetry and weight loss method respectively. It takes at least one day to obtain the contents of the three components. The process is complex, expensive and takes a long time to meet the real-time control requirements of ginseng production and processing. need. Ginseng products are widely used in Chinese herbal medicines and Chinese patent medicines with remarkable effects. The rapid and accurate analysis and measurement of ginseng quality and drug efficacy will inevitably promote the rapid development of industries such as medicine and health care, beauty and skin care. At present, there is no report on the rapid analysis of ginseng components using near-infrared spectroscopy.

Contents of the invention

In order to solve the problems existing in the measurement of ginseng components (ginseng total saponins, ginseng total sugars and moisture) in the background technology, the present invention provides a rapid analysis method for ginseng components with simple operation, low measurement cost and short measurement time.

The present invention adopts 12 preferred near-infrared spectrum wavelengths respectively: 2323nm, 2310nm, 2282nm, 2180nm, 2140nm, 2100nm, 2050nm, 1940nm, 1873nm, 1796nm, 1724nm, 1680nm, and the device of the invention can control the ginseng powder with known component content The samples are subjected to spectral tests, and a stable test model is established by using the multiple regression method. For ginseng samples with unknown components, the content of the three active components of ginseng can be measured in only 2 minutes. Improve efficiency hundreds of times.

The device used in the present invention is: near-infrared light source, collimated light irradiation module, 12 discrete wavelength filter discs, stepping motor, sample pool, photoelectric sensor, amplifier, data conversion storage and calculation module, result display and printout module .

The characteristics of its static structure and mutual relationship are: the light source is in front of the collimated light irradiation module; the collimated irradiation module is between the light source and the discrete wavelength filter, and the light source is transformed into parallel light and projected onto the filter plate; The disk is driven by a stepping motor, and the sample cell is placed behind the filter disk; the photoelectric sensor is placed on the side of the sample cell at a 45° angle to collect diffuse reflection light; the photoelectric sensor is connected to the amplifier, and the output of the amplifier is connected to the data receiving and computing module; data conversion The storage and calculation module is connected with the result display and printout module.

The specific method steps of the present invention: the near-infrared light source emits near-infrared light and irradiates the collimated light module, the collimated light module turns the light beam into parallel light, and the parallel light shines on the filter plate and transmits it to the sample pool through the filter plate After the light beam irradiates the sample cell, diffuse emission occurs. The diffuse emission spectrum containing the sample composition information is received by the photoelectric sensor and converted into an electrical signal. The electrical signal is amplified by the amplifier and processed by the data conversion storage and calculation module. Result display and printout module output.

The invention solves the shortcomings of complex process, high cost and long time in the analysis of ginseng components, and has the characteristics of simple operation, low measurement cost and short measurement time. Using this method to analyze ginseng total saponins, ginseng total sugars, water and other components only takes 2 minutes to obtain the test results, which improves the test efficiency by more than hundreds of times and has extremely high use value.

Description of drawings

Fig. 1 is a schematic block diagram of the present invention, a schematic diagram of an embodiment and an abstract accompanying drawing;

The composition in Fig. 1 is: near-infrared light source 1, collimated light irradiation module 2, 12 discrete wavelength filter discs 3, stepper motor 4, sample cell 5, photoelectric sensor 6, amplifier 7, data conversion storage and calculation module 8, Result display and printout module 9 .

Specific real-time example

Embodiment of the present invention: when working, the near-infrared light source 1 emits near-infrared continuous light, and the light irradiates the collimated light irradiation module 2 and becomes a parallel beam, and the parallel beam irradiates on the 12 discrete wavelength filter discs 3, and the discrete wavelength filter discs are in the Driven by the stepper motor 4, 12 spectrums, such as 2323nm, 2310nm, 2282nm, 2180nm, 2140nm, 2100nm, 2050nm, 1940nm, 1873nm, 1796nm, 1724nm, 1680nm, etc. are respectively time-sharingly output, and each spectrum is time-sharingly irradiated vertically to the container containing ginseng. On the sample cell 5, the diffuse reflection light reflected by the sample cell 5 is converted into an electrical signal by the photoelectric sensor 6. The surface of the photoelectric sensor 6 forms an angle of 45° with the surface of the sample cell 5. The electrical signal is amplified by the amplifier 7, and the data is converted, stored and calculated. After being processed by the module 8, the test result is output to the experimenter by the result display and printout module 9.

Implementation of near-infrared light source 1 can choose halogen tungsten lamp, collimated light irradiation module 2 can choose beam expander made of optical glass, 12 discrete wavelength filter disk 3 directly made by the manufacturer, stepping motor 4 can choose BYG42101 motor, samples Pool 5 is made of optical glass K9, photoelectric sensor 6 is PdS lead sulfide detector, amplifier 7 is OP37, data conversion storage and calculation module 8 is C8051F60, result display and printout module 9 is LCD and laser printer.

Claims (3)

1. A rapid analysis method for ginseng components, characterized in that 12 near-infrared wavelengths are used to carry out spectral testing on ginseng powder samples, and a stable test model is established using multiple regression methods to perform rapid analysis of ginseng components; The specific method steps are: the near-infrared light source (1) emits near-infrared light and irradiates the collimated irradiation light module (2), the collimated irradiation module (2) turns the light beam into parallel light, and the parallel light shines on the filter disc ( 3), the discrete wavelength filter disk is driven by the stepping motor (4) to output 12 spectra in time-sharing respectively, and each spectrum is irradiated vertically on the sample cell (5) containing ginseng in time-sharing, and the light beam irradiates the sample cell (5) ) after the diffuse emission, the diffuse emission light spectrum containing the sample composition information is received by the photoelectric sensor (6) and converted into an electrical signal, the electrical signal is amplified by the amplifier (7), and modeled and processed by the data conversion storage and calculation module (8) , the test result is output by the result display and printout module (9). 2. according to a kind of rapid analysis method of ginseng composition described in claim 1, it is characterized in that described preferred 12 near-infrared wavelengths are respectively 2323nm, 2310nm, 2282nm, 2180nm, 2140nm, 2100nm, 2050nm, 1940nm, 1873nm, 1796nm, 1724nm, 1680nm. 3. according to a kind of ginseng component rapid analysis method described in claim 1, it is characterized in that the ginseng component that this method measures is total ginseng saponin, total ginseng sugar and moisture.

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