A method for measuring glucose level model conversion with different near-infrared instruments

Abstract

The invention discloses a method for carrying out model conversion on the basis of glucose degrees measured by different near-infrared instruments. The near-infrared data of two instruments is subjected to mathematical treatment, and model conversion between the two instruments is carried out through model update. The method specifically comprises the following steps: 1) obtaining spectroscopic data under two types of near-infrared instruments; 2) carrying out mathematical conversion among spectroscopic data; 3) carrying out common-wavelength screening on the data of the two instruments; 4) calculating a converted spectral set sP'; 5) constructing the converted model. On the basis of two different near-infrared instruments, grape near-infrared spectral information of different wavebands is obtained, meanwhile, the soluble solid contents of the grape are measured, the grape index of the grape is predicted through the obtained spectral data, data conversion between two different-principle infrared instruments is finished, so that the model achieves a universal effect, and an information basis is provided for the management and the on-line detection of a grape orchard.

Description

technical field [0001] The invention relates to a method for converting models of glucose levels measured by different near-infrared instruments, and belongs to the nondestructive technical field of rapid detection and monitoring of agricultural product quality and safety. Background technique [0002] Grape has been cultivated in my country for more than 2,000 years and is one of the important fruit tree species in my country. Soluble solids content (SSC), which is commonly referred to as sugar content, is one of the main indicators of grape internal quality and has a very important impact on the taste of grapes. When brewing wine, since different brewing techniques are used for grapes with different sugar content, the sugar content of grapes should also be strictly controlled. Grapes have the most glucose, followed by fructose, and almost no sucrose. In addition to water, grape berries have the highest sugar content, generally 15%-20%. In berry fruits such as grapes, th...

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Problems solved by technology

[0003] The post-harvest treatment and quality identification of grapes have always been an important topic in the research of agricultural product processing. The sugar content of grapes is also an important indicator of grape quality assessment. However, the traditional detection method of grape sugar content requires crushing grape berries and taking grape juice Determination of sugar content is not only time-consuming and labor-intensive, but also causes damage to the grapes, and due to the long sampling and analysis time, it is inevitable that the sample will deteriorate and lead to large human errors.

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