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Method for distinguishing Xinjiang walnut production place based on infrared spectroscopy technology

An infrared spectroscopy and walnut technology, which is applied in the direction of material analysis, analysis material, and measuring device by optical means, can solve the problems of illegal addition, doping and adulteration, and achieve the effect of avoiding use.

Inactive Publication Date: 2018-09-07
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

Walnuts have become the agricultural product resource with the most Xinjiang characteristics. However, with the development of trade and the intensification of market competition, fraudulent phenomena such as illegal addition, adulteration, and impersonation have appeared in the market.

Method used

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  • Method for distinguishing Xinjiang walnut production place based on infrared spectroscopy technology
  • Method for distinguishing Xinjiang walnut production place based on infrared spectroscopy technology
  • Method for distinguishing Xinjiang walnut production place based on infrared spectroscopy technology

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Embodiment Construction

[0023] A method for distinguishing Xinjiang walnut production areas by infrared spectroscopy technology, the specific implementation is as follows:

[0024] 1 Materials and methods

[0025] Walnut samples were collected from Hotan, Kashgar and Aksu in Xinjiang during September to October 2014. The main varieties include “Wen 185”, “Zha 343”, “Xinfeng” and “Xinxin 2” (Table 1). A total of 37 varieties were sampled in the three regions, and 15 walnuts were taken from each variety and ground to a finer powder. Because walnut kernels contain a lot of oil, they are finally in the form of walnut mud or powder (powdered walnut powder can pass through a 100-mesh sieve) ), a total of 555 experimental samples.

[0026] Table 1 Walnut sampling area and sample information

[0027]

[0028] 2 Near-infrared spectroscopy data acquisition

[0029] Weigh 5g of each walnut sample and make it into a circular cake with a diameter of 42mm and a thickness of about 4.5mm. Fourier transform nea...

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Abstract

The invention relates to a prediction method for distinguishing different production places of Xinjiang walnuts based on an infrared spectroscopy technology, and belongs to a non-destructive technology for rapid detection and monitoring of food quality and safety. According to the present invention, the spectral information of walnuts from different production places of Xinjiang within wave numberranges of 12000-4000 cm<-1> and 4000-400 cm<-1> is extracted through a near-infrared spectrum analyzer and a mid-infrared spectrum analyzer to construct a Xinjiang walnut production place distinguishing model.

Description

1. Technical field [0001] The invention relates to a method for distinguishing Xinjiang walnut production areas based on infrared spectroscopy, and belongs to the technical field of rapid detection, monitoring and control of food quality and safety. 2. Background technology [0002] As the most widely distributed nut food in the world, walnuts are called "four major dried fruits" together with almonds, cashew nuts and hazelnuts. Xinjiang is one of the origins of Chinese walnuts, and it is also the main origin of Chinese walnuts. By 2013, the walnut planting area in Xinjiang had exceeded 300,000 hectares, with an annual output of more than 300,000 tons. Xinjiang walnuts are mainly grown in southern Xinjiang, especially Hotan, Kashgar and Aksu. There are mainly varieties such as "Wen 185", "Zha 343", "Xinfeng" and "Xinxin 2". Walnut has become the most characteristic agricultural product resource in Xinjiang. However, with the development of trade and the intensification of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359
CPCG01N21/359G01N2021/3595
Inventor 潘磊庆顾欣哲屠康
Owner NANJING AGRICULTURAL UNIVERSITY
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