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Method for quickly detecting quality of black rice

A kind of black rice, fast technology, applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making the material undergo chemical reaction, etc. problem, to achieve the effect of fast identification speed, simple operation method and low dosage

Inactive Publication Date: 2014-04-16
张欢彦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no specific measurement standards for the above four methods, and it is impossible to make an effective judgment on black rice. In addition, the observation ability of human eyes is very different, and there are many uncertain factors in the specific identification, so it is necessary to improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: the method for fast detection black rice quality:

[0026] 1. Mix concentrated hydrochloric acid and water to obtain detection reagent A, seal it for later use, and make the pH value of detection reagent A 2;

[0027] 2. Randomly take a dozen grains of black rice samples from the grain bag and place them in a small container;

[0028] 3. Add 3ml of the prepared detection reagent A into the small container and submerge the black rice sample;

[0029] 4. Observe the color change of detection reagent A to make a judgment:

[0030] 1) The detection reagent has the color of red wine, and the black rice sample is high-quality black rice;

[0031] 2) The detection reagent is black, and the black rice sample is dyed black rice;

[0032] 3) The detection reagent is light red, and the black rice sample is inferior black rice;

[0033] 4) The detection reagent does not change color, and the black rice sample is inferior black rice;

[0034] If the black rice s...

Embodiment 2

[0035] Embodiment two: the method for fast detection black rice quality:

[0036] 1. Mix oxalic acid and water to obtain detection reagent A, seal it for later use, and make the pH value of detection reagent A 5;

[0037] 2. Randomly take a dozen grains of black rice samples from the grain bag and place them in a small container;

[0038] 3. Add 2ml of the prepared detection reagent A into the small container and submerge the black rice sample;

[0039] 4. Observe the color change of detection reagent A to make a judgment:

[0040] 1) The detection reagent has the color of red wine, and the black rice sample is high-quality black rice;

[0041] 2) The detection reagent is black, and the black rice sample is dyed black rice;

[0042] 3) The detection reagent is light red, and the black rice sample is inferior black rice;

[0043] 4) The detection reagent does not change color, and the black rice sample is inferior black rice;

[0044] If the black rice sample is black rice...

Embodiment 3

[0045] Embodiment three: the method for fast detection black rice quality:

[0046] 1. Mix sodium hydroxide and water to obtain detection reagent A and seal it for later use, and make the pH value of detection reagent B 12;

[0047] 2. Randomly take a dozen grains of black rice samples from the grain bag and place them in a small container;

[0048] 3. Add the prepared 4ml detection reagent A into the small container and submerge the black rice sample;

[0049] 1) The detection reagent is blue, and the black rice sample is high-quality black rice;

[0050] 2) The detection reagent is black, and the black rice is dyed for the black rice sample;

[0051] 3) The detection reagent is light blue, and the black rice sample is inferior black rice;

[0052] 4) The detection reagent does not change color, and the black rice sample is inferior black rice.

[0053] If the black rice sample is black rice with mixed quality and bad quality, put the black rice samples one by one, add a ...

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Abstract

The invention provides a method for quickly detecting the quality of black rice. The method comprises the following steps: firstly, sealing an acid solution (used as a detection reagent A) with Ph value of 2-5 for later use, or sealing an alkaline solution (used as a detection reagent B) with Ph value of 9-12 for later use; then, placing black rice samples into a small vessel; adding the prepared detection reagent A or detection reagent B into the small vessel to submerge the black rice; and finally, observing the color changing condition of the detection reagent and distinguishing. The method utilizes the characteristics that anthocyanin contained in the black rice becomes red when meeting the acid solution and the anthocyanin becomes blue when meeting the alkaline solution; according to the method, the acid solution and the alkaline solution are used to identify the quality of the black rice; the operation method is simple, the dosage of the detection reagent is less, the identifying speed is high, the result can be obtained within one minute and is accurate, and the method is really simple, quick and accurate.

Description

technical field [0001] The invention relates to the technical field of black rice detection, in particular to a method for quickly detecting the quality of black rice. Background technique [0002] Black rice is an indispensable food in people's life and has high nutritional value. However, the commercially available black rice is good or bad, and it is difficult for people to distinguish it with eyes. In actual life, the following methods are usually used to identify the quality of black rice: one is to look at the gloss, the normal black rice has a glossy epidermis, and the inferior black rice has no luster; It is flaky, and if it is powdery, it is inferior black rice; the third is to look at the rice heart, the rice heart of normal black rice is white, while the rice heart of ordinary rice is transparent and has no color. Although the appearance of high-quality black rice is relatively uniform, the color of the dye will penetrate into the heart of the rice; the fourth is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 张欢彦
Owner 张欢彦
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