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A method for simultaneously detecting the content of fatty acids and active substances in fatty acyl neutral amino acid surfactants

A fatty acyl neutral and surfactant technology, applied in the field of analysis and detection, can solve the problems of high boiling point, high difficulty and large relative molecular mass, and achieve the effect of improving UV response sensitivity, high accuracy and simple operation.

Active Publication Date: 2018-01-02
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are great limitations in the determination of fatty acid components with high boiling point, large relative molecular mass and non-volatile
There is no authoritative method for the detection of active substances in amino acid surfactants. It is mainly estimated by nuclear magnetic method or nitrogen determination method, which is relatively rough.
Simultaneous determination of the respective contents of fatty acids and active substances in amino acid surfactants inevitably has problems such as difficulty, time-consuming, and poor accuracy.

Method used

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  • A method for simultaneously detecting the content of fatty acids and active substances in fatty acyl neutral amino acid surfactants
  • A method for simultaneously detecting the content of fatty acids and active substances in fatty acyl neutral amino acid surfactants
  • A method for simultaneously detecting the content of fatty acids and active substances in fatty acyl neutral amino acid surfactants

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Embodiment 1

[0040] This embodiment is used for illustrating a kind of method of simultaneously detecting fatty acid and active matter content in sodium cocoyl sarcosinate of the present invention, comprises the steps:

[0041] (1) Reagent preparation:

[0042] Fatty acid standard solution 1: prepare acetone solutions containing 500 mg / L caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid and stearic acid;

[0043] Fatty acid standard solution 2: prepare acetone solutions containing 200mg / L caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid and stearic acid respectively;

[0044] Fatty acid standard solution 3: Prepare acetone solutions containing 100mg / L caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid and stearic acid respectively;

[0045] Fatty acid standard solution 4: prepare acetone solutions containing 50mg / L caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid and stearic acid respectively;

[0046] Fatty...

Embodiment 2

[0091] This embodiment is used to illustrate a method for simultaneously detecting the content of fatty acids and active substances in sodium cocoyl glycinate of the present invention. The detection steps are consistent with those in Example 1 and will not be repeated.

[0092] Measure the repeatability data of fatty acid content in the same batch of sodium cocoyl glycinate as follows:

[0093]

[0094] Measure the repeatability data of active matter content in the same batch of sodium cocoyl glycinate as follows:

[0095]

[0096] Measure the fatty acid content spiked recovery data in the same batch of cocoyl glycinate sodium as follows:

[0097]

[0098] Measure active substance content standard addition recovery data in the same batch of cocoyl glycinate sodium as follows:

[0099]

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Abstract

The invention discloses a method of simultaneously detecting contents of fatty acid and an active matter in a fatty acyl neutral amino acid surfactant. The method comprises the following steps of acidizing the surfactant by using inorganic acid firstly; then, extracting an organic matter by using a C18SPE column, and eluting the organic matter from the column by using an organic solvent; then derivatizing the eluted organic matter; and finally, carrying out HPLC analysis. The method is shorter in time consumption, simpler to operate and high in accuracy, can be used to simultaneously detect the contents of the fatty acid and the active matter in a sample, and is suitable for detecting the contents of the fatty acid and the active matter in all fatty acyl neutral amino acid surfactant products.

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular to a method for simultaneously detecting the contents of fatty acids and active substances in fatty acyl neutral amino acid surfactants. Background technique [0002] The most widely used amino acid surfactants on the market are mainly anionic. It is very mild and has excellent foaming ability, and is widely used in personal care products such as shampoos, body washes, and facial cleansers. Suitable for sensitive skin, the skin feels soft and comfortable after use. [0003] At present, the industry adopts the Schotten-Baunmann condensation method to produce amino acid surfactants. Although the conversion rate of this method is extremely high, there is still a certain amount of fatty acid in the product unavoidably. The content of fatty acids and active substances directly determines the overall performance of the product in the formula, so it is very important to mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/74G01N30/06
CPCG01N30/06G01N30/74
Inventor 李泽勇汤仲标刘康陈磊户献雷
Owner GUANGZHOU TINCI MATERIALS TECH
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