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Method used for extracting grease from oil plant rapidly for acid value detection

A technology for extracting oils and oils, which is applied in the preparation of test samples and chemical analysis by titration, etc. It can solve the problems of long-term high-temperature reflux, long time from oil extraction to acid value detection, and high acid value detection of oils, etc. Problems can be quickly extracted, the solution time is not easy to control, and the accuracy is high

Inactive Publication Date: 2018-02-09
GUANGDONG BAOHUA AGRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The conventional Soxhlet extraction method needs to extract all the oil in the oil, and the acid value test can only be carried out after the oil content of the sample is tested. High temperature reflux and other shortcomings, resulting in the final oil acid value detection value higher than the actual value

Method used

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  • Method used for extracting grease from oil plant rapidly for acid value detection
  • Method used for extracting grease from oil plant rapidly for acid value detection
  • Method used for extracting grease from oil plant rapidly for acid value detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Step 1) Add 100g of rice bran to a volumetric flask, and add 60-150mL petroleum ether to shake. After shaking 3-5 times, let it stand and soak for 3min to obtain an extract;

[0070] In order to further optimize the above technical scheme, add 60mL petroleum ether to 100g rice bran to stabilize the shaking, after shaking 3-5 times, stand and soak for 3min to obtain the extract;

[0071] In order to further optimize the above technical scheme, 100g rice bran was added to 80mL petroleum ether to stabilize the shaking, after shaking 3-5 times, standing and soaking for 3 minutes to obtain the extract;

[0072] In order to further optimize the above technical scheme, 100g rice bran is added to 100mL petroleum ether to stabilize the shaking, after shaking 3-5 times, stand and soak for 3 minutes to obtain the extract;

[0073] In order to further optimize the above technical scheme, add 120mL petroleum ether to 100g rice bran to stabilize the shaking, after shaking 3-5 times, stand and...

Embodiment 2

[0091] Step 1) After crushing 50 g of camellia seeds, add them to a volumetric flask, and add 60-150 mL of petroleum ether to shake. After shaking for 3-5 times, stand and soak for 3 minutes to obtain an extract;

[0092] In order to further optimize the above technical scheme, 50g of camellia seeds were added 60mL petroleum ether to stabilize the shaking, after shaking 3-5 times, stand and soak for 3min to obtain the extract;

[0093] In order to further optimize the above technical scheme, 50g of camellia seeds added 80mL petroleum ether to shake, after shaking 3-5 times, let stand and soak for 3min to obtain the extract;

[0094] In order to further optimize the above technical scheme, 50 g of camellia seeds were added with 100 mL of petroleum ether to stabilize the shaking, and after shaking 3-5 times, the mixture was allowed to stand and soak for 3 minutes to obtain the extract;

[0095] In order to further optimize the above technical scheme, add 120mL petroleum ether to 50g of c...

Embodiment 3

[0113] Step 1) After crushing 20 g of sunflower seeds, add them to a volumetric flask, and add 15-30 mL of petroleum ether to shake. After shaking for 3-5 times, let stand and soak for 3 minutes to obtain an extract;

[0114] In order to further optimize the above technical scheme, add 15mL petroleum ether to 20g sunflower seeds to stabilize the shaking, after shaking 3-5 times, stand and soak for 3min to obtain the extract;

[0115] In order to further optimize the above technical scheme, 20g sunflower seeds are added with 20mL petroleum ether to stabilize the shaking, after shaking 3-5 times, stand and soak for 3min to obtain the extract;

[0116] In order to further optimize the above technical scheme, 20g sunflower seeds were added with 30mL petroleum ether to stabilize the shaking, after shaking 3-5 times, standing and soaking for 3min to obtain the extract;

[0117] Step 2) Filter the supernatant of the extract obtained in Step 1), and use heating or nitrogen blowing to completel...

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Abstract

The invention discloses a method used for extracting grease from oil plant rapidly for acid value detection. The method comprises following steps: 1, an appropriate amount of an oil material is introduced into a volumetric flask, and a solvent is added for immersion so as to obtain an extracted solution; 2, the extracted solution is filtered so as to obtain a supernatant, and solvent evaporation is carried out so as to obtain grease; 3, (1.5+-1)g of the grease is weighed, a diethyl ether isopropanol mixed solution is added into the grease so as to obtain a sample to be detected; 4, an indicator is added into the sample, a titration reagent is added into the sample dropwise until the sample becomes slightly red, and the using volume of the titration reagent is recorded; and 5, oil materialacid value and free fatty acid content are calculated. According to the method, the oil material is immersed in the solvent so as to realize rapid extraction of grease for acid value detection based on like dissolves like principles, long term of backflow high temperature states of the oil material in extraction process is avoided, influences of time and temperature on oil material acid value arereduced, and the rapid accurate oil material acid value detection method is provided.

Description

Technical field [0001] The invention relates to the technical field of oil acid value detection, and more specifically to a method for quickly extracting fat from oil for acid value detection. Background technique [0002] The use of Soxhlet extraction method to prepare oil and use it for acid value detection is a commonly used method for oil acid value detection. Soxhlet extraction requires the sample to be tested to be wrapped in a degreased filter paper bag and placed in the extraction tube; then the solvent is added to the extraction bottle and the extraction bottle is heated; then the solvent vaporizes and enters the condensation through the connecting tube The vaporized solvent is condensed into a liquid and drips into the extraction tube to extract the oil and fat substances in the sample; the solvent level in the extraction tube reaches a certain height, and the solvent with the crude fat flows into the extraction bottle through the siphon; finally flows into the extracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/40G01N31/16
Inventor 刘文剑时保兴易娟娟
Owner GUANGDONG BAOHUA AGRI TECH CO LTD
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