Near-infrared online quality detection method for rehmannia

A quality inspection method and near-infrared technology, applied in neural learning methods, measurement devices, preparation of test samples, etc., can solve the problems of complex inspection procedures and inability to evaluate quality.

Inactive Publication Date: 2021-09-10
NANJING HAIYUAN CHINESE HERBAL PIECES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are shortcomings such as complex testing procedures and inability to conduct overall quality evaluation

Method used

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  • Near-infrared online quality detection method for rehmannia
  • Near-infrared online quality detection method for rehmannia
  • Near-infrared online quality detection method for rehmannia

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Experimental program
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Embodiment 1

[0029] 1. Experimental materials

[0030] 1.1 Test medicinal materials

[0031] There are 100 batches of Rehmannia glutinosa, all from Nanjing Haiyuan Traditional Chinese Medicine Co., Ltd., as shown in Table 1.

[0032] Table 1 Sources of 100 batches of Rehmannia glutinosa

[0033] Origin Hebei Henan Shandong Shanxi Shaanxi quantity 36 5 17 33 9

[0034] 1.1 Experimental instruments and reagents

[0035] Bruker-Tensor37 Fourier transform mid- and near-infrared spectrometer, including OPUS5.0 software, Pbs detector (Bruker, Germany); Waters e2695 high performance liquid chromatograph (Waters, USA) Waters2998 UV detector; 1 / 10,000 balance BSA2245-CW (Beijing Sartorius Scientific Instrument Co., Ltd.); AG-285 1 / 100,000th Balance (Swiss METTLER TOLEDO Company); KY-500E Ultrasonic Cleaner (Kunshan Ultrasonic Instrument Co., Ltd.); HH-6 Digital constant temperature water bath (Changzhou Guohua Electric Co., Ltd.); Milli-Q ultrapure water meter ...

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Abstract

The invention discloses a near-infrared online quality detection method for rehmannia. The method comprises the steps of (1) conducting sample preparation, specifically, taking rehmannia decoction piece samples from different producing areas and different batches; (2) simultaneously collecting and recording a near infrared spectrogram of the rehmannia sample and a near infrared spectrogram of the ground rehmannia; (3) preprocessing the spectral data, specifically, respectively adopting an original spectrum, first-order derivation, second-order derivation, multivariate scatter correction, vector normalization, convolution smoothing filtering, multivariate scatter correction + vector normalization, convolution smoothing filtering + multivariate scatter correction, convolution smoothing filtering + vector normalization, preprocessing the near infrared spectrum data of the rehmannia sample before and after grinding; and (4) carrying out model screening by adopting a convolutional neural network, PLSR and segmented PLSR, and establishing a rehmanniae quantitative correction model. The established model is accurate and reliable, the operation is rapid and simple, and the content of catalpol and moisture in the rehmannia decoction pieces can be directly measured in a lossless manner.

Description

technical field [0001] The invention belongs to the technical field of medicinal material detection, and in particular relates to a near-infrared quality detection method of Rehmannia glutinosa based on partial least squares regression method (PLSR). Background technique [0002] Rehmannia glutinosa is a plant of the Scrophulariaceae family Rehmannia glutinosa The fresh or dried tuberous root of Libosch. is one of the four major herbal medicines in my country. Rehmannia glutinosa has a long history of medicinal use in my country. It was first recorded in the "Shen Nong's Materia Medica" and listed as a top grade, with the functions of clearing heat and nourishing blood, nourishing yin and promoting body fluid. Rehmannia glutinosa has a long history and significant nourishing effect, which makes its historical evolution quite rich. Rehmannia glutinosa has been used in clinical applications such as fresh rehmannia, raw rehmannia, rehmannia glutinosa, raw rehmannia charcoal, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359G01N1/28G06N3/04G06N3/08
CPCG01N21/359G01N1/28G06N3/04G06N3/08
Inventor 蔡宝昌刘晓王天舒金俊杰秦昆明李伟东杨超
Owner NANJING HAIYUAN CHINESE HERBAL PIECES CO LTD
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