Method for rapidly predicting adulterated dendrobium huoshanense of dendrobium Henan

A fast technology of Dendrobium Huoshanense, applied in the field of identification of Chinese herbal medicines, to achieve the effect of reducing manual sampling errors and rapid determination

Pending Publication Date: 2021-07-27
WEST ANHUI UNIV
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Problems solved by technology

Common wavelength screening methods are mainly used in the quantitative analysis of near-infrared spectroscopy, but there are few reports on the quantitative analysis of adulteration by mid-infrared spectroscopy combined with wa

Method used

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  • Method for rapidly predicting adulterated dendrobium huoshanense of dendrobium Henan
  • Method for rapidly predicting adulterated dendrobium huoshanense of dendrobium Henan
  • Method for rapidly predicting adulterated dendrobium huoshanense of dendrobium Henan

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Experimental program
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Effect test

Embodiment 1

[0037] A method for rapidly predicting Henan Dendrobium adulterated Huoshanense Dendrobium, comprising the following steps:

[0038] (1) Sample preparation of adulterated Dendrobium huoshanense

[0039] Preparation of samples of adulterated Dendrobium Huoshanense: Pick the collected fresh stems of Dendrobium Huoshanense and Dendrobium Henan, wash them with pure water to remove surface impurities, then cut the stems of Dendrobium Huoshanense and Dendrobium Henan into small pieces, and freeze-dry them at low temperature Freeze-drying in the machine, crushing with a pulverizer, and passing through a 60-mesh sieve to obtain a 60-mesh Dendrobium stem powder and a Dendrobium stem powder from Henan. 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85% , 90%, 95%, and 100% were mixed to obtain 21 groups of adulterated samples, each group of adulterated samples was set with 10 parallel samples, a total of 210 adulterated samples, and the quality of each a...

Embodiment 2

[0051] Preparation of samples of adulterated Dendrobium Huoshanense: Pick the collected fresh stems of Dendrobium Huoshanense and Dendrobium Henan, wash them with pure water to remove surface impurities, then cut the stems of Dendrobium Huoshanense and Dendrobium Henan into small pieces, and freeze-dry them at low temperature Freeze-drying in the machine, crushing with a pulverizer and passing through an 80-mesh sieve to obtain the stem powder of Dendrobium huoshanense and the stem powder of Dendrobium henanensis with a particle size of 80 mesh, the stem powder of dendrobium henanesus and the stem powder of dendrobium huoshanense are respectively 0% according to the mass ratio, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85% , 90%, 95%, and 100% were mixed to obtain 21 groups of adulterated samples, each group of adulterated samples was set with 10 parallel samples, a total of 210 adulterated samples, and the quality of each adulterated sample...

Embodiment 3

[0063] A method for rapidly predicting Henan Dendrobium adulterated Huoshanense Dendrobium, comprising the following steps:

[0064] (1) Sample preparation of adulterated Dendrobium huoshanense

[0065] Pick the collected fresh stems of Dendrobium Huoshanense and Dendrobium Henan, wash them with pure water to remove surface impurities, then cut the stems of Dendrobium Huoshanense and Dendrobium Henan into small sections, freeze-dry them in a low-temperature freeze dryer, and use crushed After the machine is pulverized, it passes through a 100-mesh sieve to obtain a particle size of 100 mesh Dendrobium Huoshanense stem powder and Henan Dendrobium stem powder. The Henan Dendrobium stem powder and Huoshanense Dendrobium stem powder are respectively 0%, 5%, 10%, 15% according to the mass ratio. %, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100% ratio mixed to obtain 21 groups of adulterated samples, 10 parallel samples were set for each group ...

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Abstract

The invention discloses a method for rapidly predicting adulterated dendrobium huoshanense of dendrobium Henan. The method comprises the following steps: (1) preparing an adulterated dendrobium huoshanense powder sample; (2) collecting an infrared spectrum; (3) performing spectrum pretreatment; (4) screening spectral characteristic wavelengths; and (5) performing adulteration amount prediction. According to the invention, by adopting a method for collecting the same sample for multiple times and preprocessing the spectrum, the manual sampling error and the influence of the scanning times, the resolution, the temperature and the optical path on the mid-infrared spectrogram can be effectively reduced; characteristic wavelength variable screening is carried out through three different wavelength selection methods of a moving window partial least square method, a Monte Carlo uninformative variable elimination method and an interval random frog method, and useless variables and interference information in an intermediate infrared spectrogram can be effectively compressed. Meanwhile, a spectrum pretreatment method and a wavelength screening method which are most suitable for the prediction model are obtained, an accurate and reliable adulteration prediction model is established, and the adulteration amount in an adulterated dendrobium huoshanense sample is rapidly measured.

Description

technical field [0001] The invention relates to the technical field of identification of traditional Chinese medicinal materials, and more specifically relates to a method for quickly predicting the adulteration of Henan Dendrobium Dendrobium Huoshanense Dendrobium. Background technique [0002] Huoshan Dendrobium (Dendrobium huoshanense Tang et Cheng) is a perennial herb of the Orchidaceae Dendrobium genus. It is mainly produced in Huoshan, Yuexi, Qianshan and other places in Anhui. It contains polysaccharides, alkaloids and rich trace elements. It has many functions such as promoting body fluid and benefiting stomach, anti-tumor, anti-cataract, etc. It is one of the important authentic medicinal materials in Anhui. Due to the low germination rate and slow growth of Dendrobium Huoshanense in its natural state, coupled with long-term over-harvesting, its wild resources are on the verge of extinction. At present, most of the Dendrobium Huoshanense sold in the market is the w...

Claims

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Application Information

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IPC IPC(8): G01N21/3563G06F17/18
CPCG01N21/3563G06F17/18G01N2021/3572G01N2021/3595G01N2201/129
Inventor 陈乃东郝经文秦朝凤李强朱安玲刘孝全徐惠敏杨维瀚
Owner WEST ANHUI UNIV
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