Supercharge Your Innovation With Domain-Expert AI Agents!

Method for preparing conjugated linoleic acid based on tobacco seed oil

A technology of conjugated linoleic acid and tobacco seed oil, which is applied in the preparation of carboxylate salts, chemical instruments and methods, and the preparation of organic compounds. It can solve problems such as corrosion of production equipment, failure to recycle, and environmental pollution, and avoid corrosion. , high conversion rate of conjugated linoleic acid, simple operation

Active Publication Date: 2021-09-21
TOBACCO RES INST CHIN AGRI SCI ACAD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These alkalis are highly corrosive and will corrode production equipment during industrial production; at the same time, these alkalis cannot be recycled during the application process, which has brought huge pollution to the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing conjugated linoleic acid based on tobacco seed oil
  • Method for preparing conjugated linoleic acid based on tobacco seed oil
  • Method for preparing conjugated linoleic acid based on tobacco seed oil

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] In the present invention, the KF / Al 2 o 3 The loading amount of KF in the solid base catalyst is preferably 30-55 wt%, more preferably 35-50 wt%, even more preferably 45 wt%. The present invention is to described KF / Al 2 o 3 The source of the solid base catalyst has no special requirements, and the conventional commercially available KF / Al in this field is used 2 o 3 Solid base catalyst or self-preparation can be used. When self-prepared, the KF / Al 2 o 3 The preparation method of solid base catalyst preferably comprises the following steps:

[0036] (a) Al 2 o 3 Carry out activated roasting to obtain activated Al 2 o 3 ;

[0037] (b) KF solution and the activated Al 2 o 3 Mixing, followed by heating and stirring, static aging, drying and roasting to obtain KF / Al 2 o 3 solid base catalyst.

[0038] The present invention will Al2 o 3 Carry out activated roasting to obtain activated Al 2 o 3 . In the present invention, the activation roasting is prefer...

Embodiment 1

[0048] Weigh 6g of A1 2 o 3 , placed in a muffle furnace, roasted at 400°C; weighed 6.48g of KF·2H 2 O, add deionized water to prepare a solution with a concentration of 12%, fully dissolve and add activated A1 after roasting 2 o 3 For the carrier, the temperature of the mixed solution was raised to 60°C, fully stirred, after immersion for 4 hours, left to age for 20 hours, and then dried in a vacuum oven at 80°C for 12 hours. The dried solids were removed, placed in a muffle furnace, and activated at 400°C for 3 hours to obtain KF / Al with a loading capacity of 40wt%. 2 o 3 solid base catalyst.

Embodiment 2

[0050] (1) Take 5mL of tobacco seed oil, add 5mL of phosphate buffer solution with a pH value of 7.5, preheat in a constant temperature shaking box at 40°C and 100r / min for 10min; After the hydrolysis reaction was carried out for 10 h, 10 mL of ethanol with a volume fraction of 95% was added to terminate the reaction. The reaction solution was centrifuged at 1000r / min for 5 minutes, and the upper layer was taken to obtain crude linoleic acid. After calculation, the hydrolysis rate of tobacco seed oil is 81.23%.

[0051] The calculation of hydrolysis rate is shown in formula 1:

[0052] Hydrolysis rate (%) = (AV X -AV 0 ) / (SV-AV)×100 Formula 1;

[0053] In formula 1: AV X is the acid value of the sample after hydrolysis;

[0054] AV 0 is the blank control acid value;

[0055] AV and SV are the acid value and saponification value of the raw oil, respectively.

[0056] The acid value is determined according to "GB / T 5530-2005 Determination of Acid Value and Acidity of An...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for preparing conjugated linoleic acid based on tobacco seed oil, and belongs to the technical field of conjugated linoleic acid preparation. The tobacco seed oil is used as the raw material for producing the conjugated linoleic acid, the yield of the tobacco seed oil per mu is high, and the cost of the conjugated linoleic acid can be greatly reduced by using the tobacco seed oil as the raw material. The method comprises the following steps: hydrolyzing tobacco seed oil by an enzyme hydrolysis method to obtain crude linoleic acid, and then catalyzing the crude linoleic acid to be converted into conjugated linoleic acid by using KF / Al2O3 solid alkali as a catalyst for an alkali isomerization reaction, so that the use of inorganic alkali and sodium alkoxide can be avoided, and the corrosion to equipment is avoided; meanwhile, the KF / Al2O3 solid alkali can be recycled, so that the influence on the environment is reduced. The preparation method is easy to operate and has relatively high conjugated linoleic acid conversion rate.

Description

technical field [0001] The invention relates to the technical field of preparation of conjugated linoleic acid, in particular to a method for preparing conjugated linoleic acid based on tobacco seed oil. Background technique [0002] Conjugated linoleic acid is a general term for a series of octadecadienoic acids containing conjugated double bonds and having various positional and geometric isomers. Studies have shown that conjugated linoleic acid has physiological effects such as anti-cancer, lipid-lowering, anti-atherosclerosis, regulating energy metabolism, enhancing body immunity, and promoting growth and development. It is widely used in medicine, food, cosmetics and other fields, while c9t11 -CLA and t10c12-CLA are the two most biologically active isomers of conjugated linoleic acid isomers. [0003] Alkali-catalyzed isomerization is currently the most economical and most commonly used method for the large-scale production of conjugated linoleic acid. Rice germ oil, s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C12P7/64C07C51/353C07C57/12
CPCC12P7/6427C07C51/353C07C57/12Y02P20/584
Inventor 张建会侯小东肖勇杜咏梅杨兴有江鸿
Owner TOBACCO RES INST CHIN AGRI SCI ACAD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com