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Method for predicting ferulic acid content of barbary wolfberry fruit based on hyperspectral imaging technology

A technology of hyperspectral imaging and technology prediction, which is applied in the field of quality identification of Chinese medicinal materials, can solve problems such as large empirical identification errors, complex and time-consuming chemical inspection operation methods, and strong subjectivity, so as to improve accuracy and scientificity, and benefit The effect of market circulation monitoring and cost reduction

Active Publication Date: 2019-03-01
北京中研百草检测认证有限公司
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Problems solved by technology

The empirical identification error is relatively large, the subjectivity is strong, and the operation method of chemical inspection is complicated, time-consuming and laborious

Method used

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  • Method for predicting ferulic acid content of barbary wolfberry fruit based on hyperspectral imaging technology
  • Method for predicting ferulic acid content of barbary wolfberry fruit based on hyperspectral imaging technology
  • Method for predicting ferulic acid content of barbary wolfberry fruit based on hyperspectral imaging technology

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Embodiment 1

[0048] This embodiment provides a method for establishing a model based on hyperspectral imaging technology to predict the content of ferulic acid in Fructus Lycium barbarum and a method for determining the content of ferulic acid in Fructus Lycium barbarum, including the following steps:

[0049] 1) Take 6 samples, take 75 capsules for each sample and divide them into 5 groups randomly, place them on the mobile platform, try not to exceed the range of the lens. When arranging goji berries, highlight the characteristics of each particle, arrange each group in a row, and place the whiteboard for black and white correction 5cm behind the sample. Wait for the instrument to connect and self-test. Set the scanning parameters of the hyperspectral imager, the lens distance is 30cm, and the platform moving speed is 1.5mm / s. Set the integration time of the 400-1000nm lens to 4350μs and the frame time to 22000. The integration time of the 1000-2400nm lens to 4000μs and the frame time t...

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Abstract

The invention discloses a method for predicting ferulic acid content of barbary wolfberry fruit based on a hyperspectral imaging technology. The method comprises the following steps: 1) performing spectrum scanning on a sample with a high-spectrum imaging system, and collecting high-spectrum data of 400 to 1000 nm and 1000 to 2400 nm; 2) performing RAD (Radiometric calibration)on the original high-spectrum data in sequence, converting the high-spectrum data into relative reflection rate data by adopting a flat field processing method, processing the relative reflection rate data with a multiplicative scatter correction method, and performing principal component analysis dimensionality reduction; performing principal component analysis on effective wave bands to obtain main spectrum information; 3) modeling the main spectrum information and ferulic acid content with principal component regression to obtain a prediction model of the ferulic acid content of barbary wolfberry fruit; 4) processing the sample to be tested according to the steps 1) and 2), inputting the obtained main spectrum information into the prediction model, and calculating the ferulic acid content of the sample tobe tested.

Description

technical field [0001] The invention belongs to the field of quality identification of traditional Chinese medicinal materials, and in particular relates to a method for predicting ferulic acid content in wolfberry fruit based on hyperspectral imaging technology. Background technique [0002] Lycium barbarum resources are widely distributed in my country and there are many varieties. According to the description of "Flora of China", there are 7 species and 3 varieties of Lycium barbarum in my country. They are native to northern my country, such as northern Hebei, Inner Mongolia, northern Shanxi, northern Shaanxi, Gansu, Ningxia, and Qinghai. , Xinjiang has wild, because the fruit is used as medicine and gradually practice cultivation, now mostly based on cultivation. After many researches, Ningxia has been positioned as the authentic production area of ​​medicinal wolfberry. However, due to the rich variety, many production areas, and the influence of many environmental fac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 张小波郭亮
Owner 北京中研百草检测认证有限公司
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