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Method for identifying Larrea extract in cosmetic raw materials

A technology for cosmetics and extracts, which is applied in the field of analysis and detection, can solve the problems of simultaneous detection and analysis of nordihydroguaiaretic acid and genkwain, and the inability to confirm whether the test substance is contained, etc., so as to achieve simple sample pretreatment, Wide application range and high detection efficiency

Inactive Publication Date: 2017-12-08
PERFECT CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the defects that the methods in the prior art cannot simultaneously detect and analyze nordihydroguaiaretic acid and genkwain and thus cannot confirm whether the test substance contains Laria extract, Thereby providing a method for identifying Laria extract in cosmetic raw materials

Method used

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  • Method for identifying Larrea extract in cosmetic raw materials
  • Method for identifying Larrea extract in cosmetic raw materials
  • Method for identifying Larrea extract in cosmetic raw materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1. Material preparation

[0058] 1.1 Nordihydroguaiaretic acid standard sample;

[0059] 1.2 Daphnein standard;

[0060] 1.3 Chromatographic acetonitrile, high-purity nitrogen;

[0061] 1.4 Phosphoric acid, analytically pure;

[0062] 1.5 high performance liquid chromatography (with DAD detector)

[0063] 2. Analysis steps

[0064] 2.1 Pre-processing

[0065] Accurately weigh 1 g of the sample (containing Laria extract) into a 5 mL volumetric flask, add an appropriate amount of water to dissolve, dilute with 50% ethanol to volume. Filtered through a 0.45um filter membrane for determination by high performance liquid chromatography.

[0066] 2.2 Standard curve preparation

[0067] 1) Nordihydroguaiaretic acid standard curve configuration

[0068] Accurately weigh 50 mg of nordihydroguaiaretic acid standard substance in a 20 mL volumetric product, dilute to the mark with 50% ethanol (V / V), and prepare a standard stock solution.

[0069] Take 1mL of nordihydroguai...

Embodiment 2

[0088] 1. Material preparation

[0089] 1.1 Emollient raw material samples (including Laria extract);

[0090] 1.2 Chromatographic acetonitrile, phosphoric acid, nordihydroguaiaretic acid and genkwain standard substances;

[0091] 1.3 High performance liquid chromatography with DAD detector.

[0092] 2. Analysis steps

[0093] 2.1 Pre-processing

[0094] Accurately weigh 1.0219g of the sample into a 5mL volumetric flask, add an appropriate amount of water to dissolve, dilute with 50% ethanol to the mark. Filtered through a 0.45um filter membrane for determination by high performance liquid chromatography.

[0095] 2.2 Standard curve preparation

[0096] The 55.4mg standard substance taken by weighing is placed in a 20mL volumetric flask, and the volume is adjusted to the mark with 50% ethanol (V / V), and the standard stock solution is configured; take 1mL of nordihydroguaiaretic acid standard stock solution to a capacity of 20mL In the bottle, dilute with 50% ethanol (V / V...

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Abstract

The invention discloses a method for identifying a Larrea extract in cosmetic raw materials and a method for simultaneously and quantitatively detecting nordihydroguaiaretic acid and genkwanin and belongs to the technical field of analysis and detection. The provided method for identifying the Larrea extract in the cosmetic raw materials is characterized in that detection is performed through high performance liquid chromatography, and the detection wavelength is 210 nm. The method for identifying the Larrea extract in the cosmetic raw materials is very simple in pretreatment, high in detection efficiency and wide in application range and is not affected by raw material forms (solid state or liquid state).

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular to a method for identifying Laria extract in cosmetic raw materials. Background technique [0002] Laria extract is a cosmetic raw material, which is made from the leaves of Larreadivaricata, L. mexicana and L. tridentata of Tribulus terrestris. Prepared by extraction. The former is mainly produced in Argentina in South America, and the latter two are mainly produced in the deserts at the junction of the United States and Mexico in western North America. my country mainly imports the raw material of this extract as an antibacterial agent, anti-inflammatory agent, antioxidant and weight loss agent in cosmetic formulations. There is currently no identification and detection method for Laria extract in the national standard and industry, so it is urgent to develop a Simple and accurate identification and detection method of Laria extract to monitor the quality of this r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02
Inventor 邓美霞袁利文李晓敏彭玉睿周树佳王琨
Owner PERFECT CHINA
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