A kind of detection method of sorbic acid (potassium) quality

A technology of potassium sorbate and detection method, applied in transmittance measurement and other directions, can solve different problems such as discoloration in 8 months or even shorter time, so as to reduce the risk of return and improve the product qualification rate, The effect of improving economic efficiency

Active Publication Date: 2015-12-23
JINNENG SCI & TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Because sorbic acid (potassium) has many production procedures and process control points in the production process, the inherent quality of the product is inevitably different, and some will change color in 8 months or even a shorter time. In the prior art There is no effective method that can judge the shelf life of products in the early stage, and how to identify those products with poor inherent quality requires a new detection method, a detection method that can verify the shelf life of sorbic acid (potassium) appears to be quite important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0038] The detection method of sorbic acid is as follows: put the sorbic acid sample to be tested in an oven, and dry it at a constant temperature of 105±5°C for 3-5 hours, the light transmittance before drying and the light transmittance after drying The light transmission change of the difference between them is the thermal stability of sorbic acid. The smaller the thermal stability difference, the better the internal quality of the product, the more stable the product, and the longer the shelf life. On the contrary, the shorter the shelf life.

[0039] The specific relationship between the thermal stability of sorbic acid and the shelf life is:

[0040] The thermal stability difference is less than 1, and the shelf life is 17-20 months;

[0041] The thermal stability difference is 1-2, and the shelf life is 16-18 months;

[0042] The thermal stability difference is 2-3, and the shelf life is 15-17 months;

[0043] The heat stability difference is 3-4, and the shelf life i...

Embodiment 2

[0050] The detection method of potassium sorbate is as follows: put the potassium sorbate sample to be tested in an oven, and dry it at a constant temperature of 105±5°C for 18-30 hours, the light transmittance before drying and the transmittance after drying The light transmittance change of the difference between the light rates is the thermal stability of sorbic acid. The smaller the thermal stability difference, the better the internal quality of the product, the more stable the product, and the longer the shelf life. On the contrary, the shorter the shelf life.

[0051] The specific relationship between the thermal stability of potassium sorbate and the shelf life is:

[0052] The thermal stability difference is less than 2, and the shelf life is 16-18 months;

[0053] The thermal stability difference is 2-3, and the shelf life is 15-17 months;

[0054] The heat stability difference is 3-4, and the shelf life is 14-16 months;

[0055] The thermal stability difference is...

Embodiment 3

[0062] Sorbic acid sample, batch number SA201112070;

[0063] The first step: Use a balance to accurately weigh 2.0000g of the batch of material samples, use 0.5mol / l sodium hydroxide solution to dissolve it into a 50ml quantitative bottle, and set the volume to 50ml, after all of it is dissolved, use a 721 series spectrophotometer Meter detects the light transmittance of the solution, and the light transmittance of the solution is 98.3 after testing;

[0064] Step 2: Take three samples and spread them on qualitative filter paper, about 20g each, put the three samples in a constant temperature drying oven to raise the temperature to 105°C, and dry at this temperature for 3 hours. After the time is up, the samples are taken out and allowed to cool to room temperature.

[0065] Step 3: After the dry-dried sample is cooled to room temperature, mix the three samples evenly, and repeat the first step to detect that the average light transmittance of the dry-dried sample is 96.2. ...

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PUM

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Abstract

The invention discloses a method for detecting the quality of sorbic acid (potassium). The sorbic acid (potassium) to be tested is dried, and the difference between the light transmittance before drying and the light transmittance after drying is The thermal stability of sorbic acid, the smaller the thermal stability difference, the better the quality of sorbic acid (potassium) to be tested, the more stable the product, and the longer the shelf life.

Description

technical field [0001] The invention relates to the technical field of an auxiliary method for detecting the quality of sorbic acid (potassium), in particular to a method for detecting the quality of sorbic acid (potassium), which mainly detects the thermal stability of sorbic acid (potassium). The intrinsic quality of sorbic acid (potassium) is good or bad. Background technique [0002] Sorbic acid (potassium) is an unsaturated fatty acid, which is prone to oxidative discoloration in the air or long-term storage, resulting in poor antiseptic effect. [0003] At present, more than 70% of the sorbic acid (potassium) produced in my country is sold to countries such as Europe and the United States, and the service life is longer, often 1 year or longer, but the time for sorbic acid (potassium) to oxidize and change color is 8 months- 12 months. Because sorbic acid (potassium) has many production procedures and process control points in the production process, the inherent qual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/59
Inventor 谷文彬任长春朱孝春张红霞
Owner JINNENG SCI & TECH
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