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Nondestructive testing method and system of fatty acid content of rice

A non-destructive testing, fatty acid technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of high data dimension, redundant data, time-consuming modeling, etc., to ensure diversity and representativeness, good prediction accuracy, The effect of shortening the detection time

Active Publication Date: 2015-11-04
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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Problems solved by technology

[0005] The spectral curve in the hyperspectral image has extremely high spectral resolution, and the data dimension is high. If the full spectral band is used as the input variable to establish the prediction model of rice fatty acid content, the model will have more redundancy due to the collinearity of the input variables. data, which consumes a lot of modeling time

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  • Nondestructive testing method and system of fatty acid content of rice

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Embodiment Construction

[0042] Select non-mildew, non-germinated indica rice with a thousand-grain weight of 23.32g and place it in 200 sample dishes for individual numbering. Each sample dish contains 100g of net load, and 50 sample dishes are in accordance with grain storage requirements (temperature 10°C, humidity 15%) into the constant temperature and humidity box A for storage; then, the remaining 150 sample dishes are placed in the constant temperature and humidity box B according to the suitable conditions for the growth of rice mold (temperature 30 ° C, humidity 90%) to cultivate, the above mold According to the relationship between physical and chemical properties and time changes in the rice storage process, the preparation process of modified rice was divided into 3 cycles, each time cycle was about 10 days, and the results of different mildew stages (initial, middle, and late stages) were obtained. 50 servings of rice each.

[0043] At room temperature, the Hypersis agricultural product h...

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Abstract

The invention discloses a nondestructive testing method and system of fatty acid content of rice. The method comprises the steps that indica rice which is free of mildew, ungerminated and with the thousand kernel weight of 23.32 g is placed in a constant temperature and humidity incubator to conduct mould culture, and rice samples at different mildew periods are prepared; the reflectivities of the rice samples correspond to light waves with the wavelength of 392 nm, 404 nm, 430 nm, 442 nm, 619 nm, 636 nm, 870 nm, 885 nm and 899 nm are collected respectively; the reflectivities are put in a rice fatty acid content prediction model. According to the nondestructive testing method and system of the fatty acid content of the rice, the SPXY-SPA-MLR model which is built based on the characteristic spectrum waveband reflectivities can rapidly conduct nondestructive testing on the fatty acid content of the rice, the testing time is greatly shortened, and the testing cost is reduced.

Description

technical field [0001] The invention relates to the field of rice quality detection, in particular to a method and system for non-destructive detection of fatty acid content in rice. Background technique [0002] Rice is one of the main grain crops in my country, and most of its main production areas and reserve areas are concentrated in the south of the Yangtze River. The climate in this region has the characteristics of high humidity all year round, short winters, long and hot summers, which provide suitable growth conditions for mold reproduction. Rice is rich in starch, protein, carbohydrates and other components, which are easily polluted by mold, causing mildew and deterioration, and producing substances that are poisonous to the human body. The research results show that the process of rice mildew is essentially a biochemical reaction in which microorganisms use rice as a nutrient matrix to digest, absorb and utilize material metabolism and energy metabolism. Accumu...

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Application Information

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IPC IPC(8): G01N21/25
Inventor 文韬郭鑫马强赵兵张仟仟刘付
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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