Portable device for measuring total concentration of cottonseed phenol

A portable device, the technology of gossypol, applied in the direction of measuring device, transmittance measurement, color/spectral characteristic measurement, etc., can solve the problems of high cost, time-consuming, cumbersome measurement methods, etc.

Inactive Publication Date: 2007-02-07
印度科学工业研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Most system measurement methods are cumbersome, ...

Method used

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  • Portable device for measuring total concentration of cottonseed phenol
  • Portable device for measuring total concentration of cottonseed phenol
  • Portable device for measuring total concentration of cottonseed phenol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 20 mg of pure gossypol compound was dissolved in 2 ml of glacial acetic acid and then diluted to 100 ml with a mixture of n-hexane and isopropanol. This solution corresponds to 200 ppm gossypol. In the gossypol solution, a mixture of 3-aminopropanol, dimethylformamide and ferric nitrate (Anal Chemistry1984, 56, 30-32, Ref.5) diluted to 25ml was used as a complexing agent for color development, corresponding to At 5, 10, 20, 30, 40, 60, 70ppm. The results were measured as 5±0.2, 10±0.3, 20±0.5, 30±0.5, 40±1.0, 60±0.8, 70±1.0, respectively.

Embodiment 2

[0055] In another test, 0.5 g of cottonseed cake was placed in a flask, and 10 ml of complexing agent as described in Example 1 was added. Dilute to 50ml with a mixture of n-hexane and isopropanol. Color was developed from 2ml, 5ml and 10ml aliquots and the results were measured in the reaction system as 4ppm, 9.8ppm, 19.8ppm, respectively. These results were compared to standard chromatograph measurements of absorbance of 4.3, 9.8 and 20.0 ppm.

Embodiment 3

[0057] In another experiment, 0.5 mg of cottonseed powder was soaked in 10 ml of complexing agent, and gossypol was extracted. The content of gossypol after color development was determined to be 20 ppm, representing 1% of the total content of gossypol. advantage

[0058] Main advantage of the present invention:

[0059] The system is low cost and portable;

[0060] The sample holder is specially designed to accommodate glass test tubes with a diameter of 17mm;

[0061] The concentration of gossypol is directly displayed in ppm after color development;

[0062] No standard solution is required to create a calibration curve.

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Abstract

The measurement of gossypol in cotton seed products using conventional methods namely spectrophotometric, NMR methods, chemiluminsecent method, gas-liquid chromatography polarography, thin layer chromatography and paper chromatography are tedious, time-consuming, high cost and needs calibrated systems. In the present invention, a low cost and portable system is devised and the concentration of total gossypol is directly displayed on LCD in mgl-1 or ppm from the test solution and no standard solution is required to make calibration curve for measuring the absorbance.

Description

technical field [0001] The present invention relates to a device for detecting gossypol in cottonseed deoiled cake, cottonseed and gossypol-containing compounds developed by a green complex containing iron [Fe(III)]. Background technique [0002] Cottonseed products are widely used in human and animal food in the form of oil and food. However, the use of cottonseed products in humans and their nutritional supply is limited by the presence of a polyphenolic compound, gossypol. The toxicity of gossypol also limits its application in more fields. [0003] Gossypol is a biologically active terpenoid found in sparse glands in various parts of the cotton plant, including the cottonseed kernel. Most gossypol is found naturally in glands or chemically bound to protein components in cottonseed. The pigment is a toxic compound in the free state and can accumulate in human tissues. [0004] Cottonseed is processed into oil and food for animal or human consumption. The toxicity of ...

Claims

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Application Information

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IPC IPC(8): G01N21/27G01N21/31G01N21/59G01N21/03
CPCG01N21/31G01N21/03
Inventor 马登·拉尔·辛格拉米瓦·辛格巴桑特·库马·马哈帕特拉
Owner 印度科学工业研究所
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