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Method for detecting content of acid orange added in chilli powder

A detection method, acid orange technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problems of inability to accurately determine the detected substances, inability to achieve rapid detection, and insufficient wide application range, etc., to achieve Low system maintenance cost, good application prospects, and the effect of automatic detection

Inactive Publication Date: 2016-04-13
ZHEJIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Atomic fluorescence spectrometry has the characteristics of high sensitivity, strong selectivity, small sample amount and simple method; but its disadvantage is that the scope of application is not wide enough
[0008] The above methods all need to add various chemical reagents to separate the analyte from the sample for detection, but the operation steps in the analysis process are relatively complicated and there are many influencing factors, so it is impossible to accurately determine that the detected substance must come from the original sample
Moreover, a large amount of reagents are required for pretreatment when using the above method for detection, the process is cumbersome, and rapid detection cannot be achieved

Method used

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  • Method for detecting content of acid orange added in chilli powder
  • Method for detecting content of acid orange added in chilli powder
  • Method for detecting content of acid orange added in chilli powder

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Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0039] 1. Establishment of linear regression model:

[0040] (1) Mix chili powder and acid orange evenly according to a certain ratio, and prepare test samples with gradient distribution of acid orange content.

[0041] Weigh 0mg, 1mg, 2mg, 4mg, 8mg of acid orange respectively, then add 10g of paprika, mix well to obtain 0mg / g (mass of acid orange / mass of paprika), 0.1mg / g, 0.2mg / g, 0.4 mg / g, 0.8 mg / g mixed powder, prepared into 5 test objects whose acid orange content is distributed in a gradient. 20 samples were taken for each content level, and a total of 100 test samples were obtained from 5 test objects.

[0042] Each test sample was mixed with potassium bromide crystals (KBr) at a mass ratio of 1:49, thoroughly ground, and pressed into tablets.

[0043] (2) The compression of each test sample is 400 ~ 4000cm -1 Infrared scanning is c...

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Abstract

The invention discloses a method for detecting content of acid orange added in chilli powder. The method comprises the following steps: (1) chilli powder with different contents of acid orange are used as test samples, and infrared absorption spectrum of each test sample in a set wave range is obtained; (2) according to the infrared absorption spectrum of the test sample, transmissivity of characteristic absorption peak of acid orange is extracted, and absorbance of each characteristic absorption peak is obtained; (3) a linear regression model between the acid orange content and each absorbance is established; (4) absorbance of a sample to be measured at the characteristic absorption peak of acid orange is obtained, and according to the linear regression model, the content of acid orange in the sample to be measured is obtained by calculation. The method has the advantages of simplicity, rapid and high accuracy.

Description

technical field [0001] The invention relates to the detection of the content of acid orange, in particular to a method for detecting the added content of acid orange in chili powder. Background technique [0002] Acid Orange II, also known as Acid Golden II, Golden Orange II or Acid Brilliant Orange GR, commonly known as Golden Powder, is a synthetic azo dye, mainly used for dyeing textiles, leather products, plastics and wood products, and is highly carcinogenic. sex. my country clearly stipulates that Acid Orange II is a non-edible substance, and it is prohibited to add it to food. However, due to its bright color, good level dyeing property, and low price, it is often used by unscrupulous merchants in the production and processing of peppers and their products, which brings great hidden dangers to people's food safety. Therefore, it is necessary to establish a A method for rapid detection of acid orange II in pepper and its products. [0003] At present, there are high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563
CPCG01N21/3563
Inventor 李晓丽张裕莹何勇
Owner ZHEJIANG UNIV
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