Capsaicin tracking and identification method for grain with excess heavy metals and application of capsaicin

A technology of capsaicin and heavy metals, which is applied in the direction of analyzing by causing chemical reaction of materials, and analyzing materials by observing the influence on chemical indicators, can solve the problems of heavy metals exceeding the standard monitoring and management, and improve the operability. and tracking accuracy, enhanced feeding effect, simple method effect

Inactive Publication Date: 2015-05-27
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of difficult monitoring and management of excessive heavy metals in grains, and aims to provide a method for tracking and identifying grains with excessive heavy metals by using a small amount of edible capsaicin loaded in grains with excessive heavy metals. Need to adopt complex detection equipment, low cost, ecological and environmental protection, and can fully realize the effective tracking and identification of grains with heavy metals exceeding the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put the rice with heavy metal exceeding the standard in a closed container, and reduce the pressure to 70KPa by a vacuum pump; add 10g capsaicin per ton of rice as a standard, dissolve capsaicin in absolute ethanol (99.5%) solution, and make the capsaicin concentration 3g / L absolute ethanol solution; the configured absolute ethanol solution of capsaicin is sprayed into the airtight container by a pressurized spray needle, and after keeping for 8 minutes; the pressure in the airtight container is instantly raised within 3 minutes by a pressure pump As high as 0.2MPa, after 5 minutes of constant pressure, release the pressure, and the heavy metal-exceeding rice loaded with capsaicin is obtained; 500g of the heavy-metal-exceeding rice loaded with capsaicin is dissolved in 500mL of ethanol, stirred, and filtered out after 30min. Rice, the filtrate is concentrated to nearly dry, and then the prepared 20mg / mLFeCl 3 Add 5mL of the solution to the concentrate, stir evenly with...

Embodiment 2

[0024] Wheat with heavy metal exceeding the standard is placed in a closed container, and the pressure is reduced to 85KPa by a vacuum pump; with 12g of capsaicin added per ton of wheat as a standard, capsaicin is dissolved in absolute ethanol (99.5%) solution, and the concentration of capsaicin is 4g. / L dehydrated ethanol solution; the dehydrated ethanol solution of capsaicin configured is sprayed into the airtight container by a pressurized spray needle, and after keeping for 10 minutes; the pressure in the airtight container is instantly raised within 5 minutes by a pressure pump 0.3MPa, after 7 minutes of constant pressure, release the pressure, and the heavy metal-exceeding wheat loaded with capsaicin is obtained; add 500mL of ethanol to dissolve 500g of the heavy-metal-exceeding wheat loaded with capsaicin, stir, and after 30min, filter and take out the wheat , the filtrate was concentrated to nearly dryness, and then the configured 20mg / mLFeCl 3 Add 5mL of the solution...

Embodiment 3

[0026] Place the sorghum with heavy metals exceeding the standard in an airtight container, and reduce the pressure to 65KPa by a vacuum pump; add 8g capsaicin per ton of sorghum as a standard, dissolve capsaicin in absolute ethanol (99.5%) solution, and make the capsaicin concentration 2.5 g / L dehydrated ethanol solution; the configured dehydrated ethanol solution of capsaicin is sprayed into the airtight container through a pressurized spray needle and kept for 7 minutes; the pressure in the airtight container is instantly raised within 3 minutes by a pressure pump 0.25MPa, after 5 minutes of constant pressure, release the pressure, and the heavy metal-exceeding sorghum loaded with capsaicin is obtained; 500g of the heavy-metal-exceeding sorghum loaded with capsaicin is dissolved in 500mL of ethanol, stirred, and after 30min, filter out the sorghum , the filtrate was concentrated to nearly dryness, and then the configured 20mg / mLFeCl 3 Add 5mL of the solution to the concentr...

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PUM

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Abstract

The invention discloses a capsaicin tracking and identification method for grain with excess heavy metals and application of capsaicin. The method comprises the following steps: loading capsaicin in grain with excess heavy metals; and then carrying out qualitative detection on capsaicin so as to track and identify the grain with excess heavy metals. According to the invention, capsaicin is employed as a marker for the grain with excess heavy metals for the first time and is loaded in the grain with excess heavy metals by using a special process, thereby effectively realizing tracking and identification of the grain with excess heavy metals; the method has the advantages of easiness, no need for complex detection equipment, low cost and realization of eco-environment protection, effectively overcomes the problem of difficult monitoring and management of grain with excess heavy metals at present and improves operability and accuracy of tracking.

Description

technical field [0001] The invention relates to a method for tracking and identifying capsaicin in grains with excessive heavy metals and the application of capsaicin, belonging to the field of food safety. Background technique [0002] There are 36,000 hectares of arable land in my country with heavy metals exceeding the standard, which causes "rice pollution as high as 12 million tons every year. At present, the excessive heavy metals in rice in China has become the primary problem of rice safety, especially the excessive cadmium in rice in 2013 has become an urgent need for the country to deal with it. At present, due to the water quality pollution of rivers, rivers and lakes, the rice irrigation water system is polluted by heavy metals; in addition, some cities along the rivers have relatively developed non-ferrous metal mining and smelting industries, resulting in an increase in heavy metal pollution in the entire water system; The excessive use of agricultural supplies s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 罗凤莲罗海峰欧阳建勋
Owner HUNAN AGRICULTURAL UNIV
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