Method for simultaneous extraction of pomace oil and polyphenols from olive processing waste

A technology of olive oil and waste residue, which is applied in the petroleum industry, waste fuel, fat oil/fat production, etc. It can solve the problems of long extraction time, low purity, and high production cost, and achieve shortened extraction time, shortened extraction time, and improved extraction efficiency Effect

Inactive Publication Date: 2011-11-30
NORTHWEST NORMAL UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Water extraction has the advantages of low cost, safety, and suitability for industrialized production. However, due to the high polarity of water, it is easy to extract proteins, sugars, inorganic salts and other water-soluble components, so that the extract is easily corrupted during storage. deterioration, and is not conducive to the subsequent separation, so now the water extraction method is rarely used alone; the organic solvent extraction method has the advantages of high extraction efficiency and easy industrial production, and is currently the most widely used method at home and abroad. The extraction time is longer and the energy consumption is higher; compared with other extraction methods, microwave-ultrasonic assisted extraction technology has high selectivity, fast and efficient, high yield, high extract purity, stable quality, low energy consumption, It has the characteristics of less solvent consumption, safety and no pollution, and meets the requirements of green chemistry and environmental protection
[0005] Domestic patents related to the development of olive processing waste mainly include: Patent (201010134203.1) using tetrafluoroethane solution to extract pomace oil from olive waste residue. The extraction method of this patent is relatively complicated and the production cost is high, so it is not suitable for enterprises. Large-scale application; patent (200610098344.6) discloses a preparation method of olive leaf extract rich in high-purity oleuropein, and it has developed a technology for extracting total polyphenols from olive leaves, which is about polyphenols in olive leaves However, there is no relevant research on the extraction of polyphenols in olive residue; the patent (CN1333203A) uses Chinese olive green fruit and olive leaves to prepare olive polyphenols, which is prepared by water extraction, ethanol precipitation and ethyl acetate extraction. Olive polyphenols, this patent is still not related to the comprehensive development of olive processing waste residue; patent (20041002323.3) utilizes olive leaves to extract olive polyphenols, this patent adopts water rinsing, carbon dioxide disinfection, alcohol extraction, concentration and drying, and the obtained olives are more Low phenol content and not high purity
In summary, the patented technology of simultaneously extracting pomace oil and polyphenols from olive processing waste residues has not been reported in China

Method used

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  • Method for simultaneous extraction of pomace oil and polyphenols from olive processing waste

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Experimental program
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Effect test

Embodiment 1

[0037] Take fresh olive processing waste residue, dry at 60°C for 12h; weigh 20g of olive pomace passed through a 1mm aperture sieve, use 2:1 n-hexane-ethanol mixed extraction solvent, according to the ratio of material to liquid 1:5 (g:ml) , stirred and soaked at 20°C for 60 minutes; the soaked feed liquid was pretreated for 30 min under the conditions of a microwave power of 100W connected to a condensing device and a stirring speed of 100rpm; after that, water was added to the pretreated feed liquid until the ratio of ethanol to water was 2 : 8, the mixed material liquid is connected to the power 100W of the condensing device, and the ultrasonic extractor of the control temperature 20-30 ℃ is ultrasonic 60min; Afterwards, the material liquid is filtered and washed with the same polar solvent, and the filter residue is recovered through vacuum concentration. Solvent and secondary waste residue were used as fuel, and the filtrate was centrifuged at 2000rpm for 15min to separat...

Embodiment 2

[0040] Take fresh olive processing waste residue, dry at 70 ° C for 10 h; weigh 20 g of olive pomace that has passed through a 5 mm aperture sieve, and use a 1: 1 cyclohexane-ethanol mixed extraction solvent, according to the ratio of material to liquid 1: 10 (g: ml ), stirred and soaked at 30°C for 50 minutes; the soaked feed liquid was pretreated for 20 min under the conditions of a microwave power of 200W connected to a condensing device and a stirring speed of 150rpm; after that, water was added to the pretreated feed liquid until the ratio of ethanol to water was 3:7, the mixed material liquid is ultrasonicated for 50 minutes in an ultrasonic extractor connected to a condensing device with a power of 150W and a controlled temperature of 30-40°C; after that, the material liquid is filtered, washed with the same polar solvent, and the filter residue is recovered by vacuum concentration Organic solvents and secondary waste residue were used as fuel, and the filtrate was centr...

Embodiment 3

[0043]Take fresh olive processing waste residue, dry at 80°C for 8 hours; weigh 10g of olive pomace that has passed through a 2mm aperture sieve, and use a 1:1 petroleum ether-ethanol mixed extraction solvent, according to the ratio of material to liquid 1:20 (g:ml) , stirred and soaked at 40°C for 40 minutes; the soaked feed liquid was pretreated for 10 min under the conditions of a microwave power of 300W connected to a condensing device and a stirring speed of 200rpm; after that, water was added to the pretreated feed liquid until the ratio of ethanol to water was 4 : 6, the mixed material liquid is connected to the power 200W of the condensing device, and the supersonic wave 40min is controlled in the ultrasonic extractor of temperature 40-50 ℃; After that, the material liquid is filtered and washed with the same polar solvent, and the filter residue is vacuum concentrated to reclaim the organic Solvent and secondary waste residue were used as fuel, and the filtrate was cen...

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Abstract

The invention discloses a method for synchronously extracting pomace oil and polyphenol from olive processing waste residue. The method comprises the following steps of: soaking dried waste residue in a mixed solvent, pretreating feed liquid by using a microwave extractor, adding water to separate phases, assisting in extraction by using an ultrasonic extractor, filtering or centrifuging to ensure that filtrate is demixed, concentrating an upper-layer liquid phase under reduced pressure to obtain crudely extracted pomace oil, and concentrating a lower-layer liquid phase under reduced pressureto obtain pomace polyphenol. The method has the remarkable characteristics of short consumed time, low energy consumption, high extraction efficiency and the like.

Description

technical field [0001] The invention relates to a method for extracting pomace oil and polyphenols, in particular to a method for simultaneously extracting pomace oil and polyphenols from olive processing waste residue, which belongs to biological separation technology. Background technique [0002] When adopting the cold pressing method to produce olive oil, a large amount of olive processing waste residue will be produced. The waste residue contains a large amount of active ingredients such as pomace oil and polyphenols. Direct disposal or low utilization has caused great waste of resources and environmental pollution. [0003] At present, the extraction methods of oil mainly include: pressing method, solvent extraction method, reflux method, ultrasonic-assisted extraction method, microwave-assisted extraction method and supercritical CO 2 extraction, etc. The pressed cake has high residual oil content, low oil yield, high power consumption, and easy loss of parts, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B1/00C07G99/00C10L5/44
CPCY02E50/30Y02E50/10
Inventor 孔维宝张继李阳王雁白万明许晓卉葸玉琴马君义梁俊玉杨晓龙
Owner NORTHWEST NORMAL UNIVERSITY
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