CN101799425A - Portable test method of acid value of lipid - Google Patents
Portable test method of acid value of lipid Download PDFInfo
- Publication number
- CN101799425A CN101799425A CN200910014125A CN200910014125A CN101799425A CN 101799425 A CN101799425 A CN 101799425A CN 200910014125 A CN200910014125 A CN 200910014125A CN 200910014125 A CN200910014125 A CN 200910014125A CN 101799425 A CN101799425 A CN 101799425A
- Authority
- CN
- China
- Prior art keywords
- hydroxide solution
- acid value
- potassium hydroxide
- test method
- sodium hydroxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002253 acid Substances 0.000 title claims abstract description 18
- 150000002632 lipids Chemical class 0.000 title claims abstract description 11
- 238000010998 test method Methods 0.000 title claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 36
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 239000004519 grease Substances 0.000 claims description 11
- 239000000284 extract Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 2
- 229940079593 drug Drugs 0.000 abstract 5
- 238000009533 lab test Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 241001465754 Metazoa Species 0.000 description 2
- 239000002696 acid base indicator Substances 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention relates to a portable test method of acid value of lipid. The method comprises the following steps: adding ether, ethanol and trace amount of phenolphthalein in a small drug bottle, adding potassium hydroxide solution or sodium hydroxide solution in a slightly bigger drug bottle, extracting a certain amount of oil sample to be tested with a syringe and injecting the oil sample into the small drug bottle, then extracting potassium hydroxide solution or sodium hydroxide solution in the big drug bottle with another syringe and slowly injecting the solutions into the small drug bottle, and when the mixed liquid turns to be pink, the injection rate of potassium hydroxide solution or sodium hydroxide solution is the acid value. The portable test method of acid value of lipid of the invention can be carried around, used for on-site test, and the test effect is roughly the same as the test effect of laboratory test. Moreover, the invention has the advantages of easy operation and high efficiency.
Description
One, technical field:
The present invention relates to a kind of grease detection method, specifically relate to a kind of portable test method of acid value of lipids.
Two, background technology:
In the processing of animal and vegetable oil, sales process, often test to the quality of oil product.Test the acid value value of grease, weigh an important indicator of oil quality exactly.
The check of in the past grease is to carry out in the laboratory mostly, and checkout procedure is away from the scene, and operation link is many, sense cycle is long, samples, sample presentation is cumbersome.
Though can check at the scene with special test paper, this method sensing range is little, and error is too big, can't satisfy the detection requirement.
Three, summary of the invention:
In order to solve the problems referred to above that exist when grease detects, the invention provides a kind of portable test method of acid value of lipids, it utilizes the check utensil of easy easy band, can obtain fast accurate testing result.
Technical scheme of the present invention is as follows:
A kind of portable test method of acid value of lipids, he adds ether and ethanol and micro-phenolphthalein in a phial, in a big slightly medicine bottle, add potassium hydroxide or sodium hydroxide solution, extract quantitative detected oil sample with syringe and inject phial, potassium hydroxide or the sodium hydroxide solution that extracts in the big medicine bottle with another syringe slowly injects phial again, when mixed liquor color pinkiness, can obtain the acid value value according to the injection rate IR of NaOH or potassium hydroxide solution.
The portable test method of acid value of lipids of the present invention is compared with conventional detection has following advantage: it can be carried, the on-the-spot detection, it is basic identical to detect effect and laboratory, and operation easily, the efficient height can be widely used in oil-fat plant, grease purchasing department.
Four, embodiment:
Add 5-10 milliliter ether and ethanol and micro-phenolphthalein in advance with phial, the mixed liquor ratio is 1: 1, seal stand-by, add potassium hydroxide (82%) or sodium hydroxide solution ratio by the quantity that detects grease and decide with bigger a little medicine bottle, for example detect 0.3 gram grease and restrain in the water of 820 milliliters of potassium hydroxide addings with 3 and put into phial.
Inspection method: to check that 0.3 gram oil sample is an example, get detected oil sample 0.3 gram, inject above-mentioned ether and ethanol phenolphthalein mixed liquor, shake up with accurate syringe.Get potassium hydroxide or sodium hydroxide solution with another accurate syringe then, insert in the mixed liquor phial that grease and ether, phenolphthalein, ethanol are housed and slowly inject inward, marginal not just rocks, and allows it fully react.
Observe its change color, when being the micro mist redness, the mixed liquor color stops to inject NaOH or potassium hydroxide solution, check the potassium hydroxide or the sodium hydroxide solution that have injected how many milliliters altogether, its quantity promptly is acid value value (the data based formula rate of acid value calculates and obtains).
Above-mentioned ether, the effect of alcohol mixeding liquid are the dissolving greases, and wherein phenolphthalein is as the acid base indicator in the reaction.
The scope that adopts detection method provided by the invention can detect acid value is more than the 0.1-100, and error little, be easy to carry on-the-spot operation easily, the efficient height of detecting.Can be widely used in feed factory, vegetable and animals oils processing factory and sell occasion, also can be used for quality testing department the scene of grease is detected.
Claims (3)
1. the portable test method of an acid value of lipids, it is characterized in that, in a phial, add ether and ethanol and micro-phenolphthalein, in a big slightly medicine bottle, add potassium hydroxide or sodium hydroxide solution, extract quantitative detected oil sample with syringe and inject phial, potassium hydroxide or the sodium hydroxide solution that extracts in the big medicine bottle with another syringe slowly injects phial again, and when mixed liquor color pinkiness, the injection rate IR of NaOH or potassium hydroxide solution promptly is the acid value value.
2. the portable test method of a kind of acid value of lipids according to claim 1 is characterized in that, the ratio of described ether and ethanol and micro-phenolphthalein mixed liquor is 1: 1.
3. the portable test method of a kind of acid value of lipids according to claim 1, it is characterized in that, the quantity of described potassium hydroxide or sodium hydroxide solution is decided by the quantity that detects grease, as checks 0.3 gram grease, in the water with 820 milliliters of 3 gram potassium hydroxide addings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910014125A CN101799425A (en) | 2009-02-06 | 2009-02-06 | Portable test method of acid value of lipid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910014125A CN101799425A (en) | 2009-02-06 | 2009-02-06 | Portable test method of acid value of lipid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101799425A true CN101799425A (en) | 2010-08-11 |
Family
ID=42595191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910014125A Pending CN101799425A (en) | 2009-02-06 | 2009-02-06 | Portable test method of acid value of lipid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101799425A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487435A (en) * | 2013-10-15 | 2014-01-01 | 无锡艾科瑞思产品设计与研究有限公司 | Method for detecting acid value and rapidly confirming grade of edible oil |
| CN104048960A (en) * | 2014-06-16 | 2014-09-17 | 北京桑普生物化学技术有限公司 | Rapid detection method for oxidation degree of grease and testing box |
| CN104374774A (en) * | 2012-07-10 | 2015-02-25 | 北京智云达科技有限公司 | Reagent for detecting illegal cooking oil |
-
2009
- 2009-02-06 CN CN200910014125A patent/CN101799425A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374774A (en) * | 2012-07-10 | 2015-02-25 | 北京智云达科技有限公司 | Reagent for detecting illegal cooking oil |
| CN103487435A (en) * | 2013-10-15 | 2014-01-01 | 无锡艾科瑞思产品设计与研究有限公司 | Method for detecting acid value and rapidly confirming grade of edible oil |
| CN104048960A (en) * | 2014-06-16 | 2014-09-17 | 北京桑普生物化学技术有限公司 | Rapid detection method for oxidation degree of grease and testing box |
| CN104048960B (en) * | 2014-06-16 | 2017-04-12 | 北京桑普生物化学技术有限公司 | Rapid detection method for oxidation degree of grease and testing box |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100811 |