Method for quickly detecting nutritional quality of root/stem crops on basis of near-infrared spectrum

A technology of near-infrared spectroscopy and crop nutrition, applied in the field of detection of nutritional quality components of underground root/stem crops, can solve problems such as environmental errors, consumption of chemical reagents, human errors, etc., and achieve no waste pollution cost, high-efficiency analysis method , the effect of high detection accuracy

Inactive Publication Date: 2013-01-16
JIANGSU XUZHOU SWEET POTATO RES CENT +1
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Problems solved by technology

The analysis of nutritional components by conventional chemical testing instruments in the laboratory requires multiple steps such as extraction or reaction of chemical reagents, and detection. It is easy to cause environmental errors and human errors, affect the reliability and comparability of analysis results, consum...

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  • Method for quickly detecting nutritional quality of root/stem crops on basis of near-infrared spectrum

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Embodiment Construction

[0017] Such as figure 1 The flow chart route shown in the test.

[0018] Screening of samples: Screen out representative calibration sample sets and test sample sets with large component content gradients that conform to modeling from resource banks across the country. In this implementation, 120 materials with basic information such as different sources, different flesh colors, different dry rates, and different biological characteristics were selected from resource banks across the country for each crop as a calibration sample set and 50 to-be-predicted sample sets;

[0019] Sample pretreatment: select robust and well-proportioned materials, wash, peel, slice, freeze-dry at -50°C for 72 hours, grind, pass through 60 mesh, seal and store for later use;

[0020] Determination of sample chemical value: refer to international general or national standard methods to accurately analyze the nutritional quality components such as starch, protein, soluble sugar, reducing sugar, gluc...

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Abstract

The invention discloses a method for quickly detecting nutritional quality of root/stem crops on the basis of near-infrared spectrum, and belongs to the field of nutritional quality detection. The method includes steps of 1), screening a representative test sample bank with high gradient of component content and according with modeling; 2), acquiring near-infrared spectrum data of test samples by a near-infrared spectrometer; 3), precisely analyzing component content of nutritional quality of the test samples in the test sample bank by referring to international or national standard methods; 4), processing the near-infrared spectrum data; 5), selecting a chemical metering process for building a mathematical model and establishing a model by a program QUANT-2 in OPUS quantitative analysis software; 6), evaluating the model by means of correction and internal cross validation; and 7), collecting the near-infrared spectrum data of to-be-tested samples, preprocessing the spectrum data, and then predicting the nutritional quality of the samples by the aid of the established model. The method has the advantages of high analysis speed, no pollution, no sample preprocessing, high detection precision, good repeatability, and capability of analyzing various nutritional quality components of underground root/stem crops simultaneously.

Description

technical field [0001] The invention relates to a method for quickly detecting the nutritional quality of underground root / stem crops based on near-infrared spectroscopy, and belongs to the technical field of detection of nutritional quality components of underground root / stem crops. It can quickly and pollution-free detect the nutritional quality components in underground root / stem crops such as sweet potato, cassava, potato, yam, and taro. Background technique [0002] Sweet potato, cassava, potato, yam, taro, etc., as typical underground root / stem starch crops, are important food, feed and industrial raw materials in my country and even in the world. Every year, a large number of samples of such underground root / stem starch crops in my country need quality analysis and identification in terms of breeding, cultivation, resource selection and preservation, and processing and utilization. The analysis of nutritional components by conventional chemical testing instruments in...

Claims

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Application Information

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IPC IPC(8): G01N21/25
Inventor 唐忠厚丁艳锋李洪民马代夫李强魏猛
Owner JIANGSU XUZHOU SWEET POTATO RES CENT
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