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Method for authenticity identification of Maca powder and determination of Maca content

A technology of maca powder and pseudo-maca powder, which is applied in the directions of measuring devices, instruments, scientific instruments, etc., to achieve the effect of simple sample pretreatment

Inactive Publication Date: 2019-04-12
INST OF QUALITY STANDARD & DETECTION TECH YUNNAN ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of effective means to detect the original maca content in adulterated maca powder. The adulteration of maca powder in the market is mainly the use of cheap mango

Method used

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  • Method for authenticity identification of Maca powder and determination of Maca content
  • Method for authenticity identification of Maca powder and determination of Maca content
  • Method for authenticity identification of Maca powder and determination of Maca content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Making samples of adulterated maca. Mix the dry pure yellow maca powder and turmeric powder in different proportions to make 16 kinds of maca powder samples, wherein the contents of maca powder are 95%, 90%, 85%, 80%, and 75% by mass respectively , 70%, 65%, 60%, 55%, 50%, 40%, 30%, 20%, 10%, 3 mixed samples for each mass percentage, 1 mixed blind sample, a total of 43 mixed samples .

[0029] 2) Make test samples. The sample to be tested was placed in a 50mL volumetric flask, distilled water was adjusted to the scale line, and the free amino acid was extracted with a 500W ultrasonic instrument for 10min, and 10mL of the extract was placed in a centrifuge tube, centrifuged at 12000rpm in a high-speed centrifuge for 5min, and passed through a 0.45μm filter membrane.

[0030] 3) An amino acid analyzer was used to measure the free amino acid spectral data of pure maca, mixed maca and manjing, and an ion exchange chromatography-ninhydrin post-column derivatization meth...

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Abstract

The invention relates to a method for utilizing free amino acid spectroscopic data for identifying the authenticity of a maca product and determining the content of raw maca in the maca product. The method comprises the main steps of 1, manufacturing a mixed maca product; 2, manufacturing a detection sample; 3, adopting an amino acid analyzer for determining free amino acid spectroscopic data in pure maca, fake maca and mixed maca; 4, analyzing and processing the free amino acid data. According to the method, preprocessing is easy and convenient, maca authenticity identification and product maca content determination can be achieved rapidly, and the method is convenient to implement and practical. The prediction error of the method is smaller than 10%, and the detection requirement for the maca product can be better met. At present, no determination method for the content of maca in the maca product exists in China, and the method can be used for quality control in the industrial field of maca and products thereof.

Description

technical field [0001] This technology belongs to the method of identifying the authenticity of maca powder and determining the content of maca. It is mainly based on the free amino acid data to establish a model for distinguishing authenticity and a model for determining the content of maca in maca products. It is used to predict the content of maca and ensure The quality of maca products. Background technique [0002] Maca (Lepidium meyenii Walp.) is a cruciferous plant native to the Peruvian Andes in South America. reputation. Maca hypocotyl light yellow, purple, black and so on. Studies have shown that Maca has good health effects, such as improving fertility, improving sexual function, inhibiting prostate enlargement, anti-fatigue, anti-depression, improving osteoporosis, and improving memory. In 2011, the Ministry of Health of my country approved Maca powder as New resource food. [0003] Maca mainly grows in alpine regions, where the temperature difference between ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
CPCG01N30/02
Inventor 刘兴勇黎其万邵金良林涛汪禄祥
Owner INST OF QUALITY STANDARD & DETECTION TECH YUNNAN ACAD OF AGRI SCI
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