WO1998038268A1

WO1998038268A1 - Process for extracting an oil mixture and oil mixture obtained by said process

Info

Publication number: WO1998038268A1
Application number: PCT/IT1998/000044
Authority: WO
Inventors: Mario Menconi; Paolo Bioli
Original assignee: Umbria Vigor S.R.L.
Priority date: 1997-02-27
Filing date: 1998-02-27
Publication date: 1998-09-03
Also published as: IT1298659B1; ITPG970003A1; AU6115198A

Abstract

The invention relates to a process for extracting an oil mixture, comprising the steps of: a) mixing pre-arranged amounts of extra-virgin olive oil and grain germ; b) grinding of the obtained mixture obtained according to step a) by machinery having all the parts in contact with the mixture made up of a material that chemically does not interact with the same mixture, said grinding being executed with a rotation speed that does not allow the creation of high peripheral speed maintaining the mixture temperature below about 30-35 °C, preferably 32 °C; c) kneading of the mixture ground according to step b) within a machine for kneading having such geometrical shape and rotation speed not to allow to the mixture to exceed a temperature of about 30-35 °C, preferably 32 °C, and providing all the parts realised by a material that chemically does not interact with mixture; d) mechanical extraction of the final product by a pressure action of the obtained mixture; e) decantation of the product extracted from step d) with separation of the liquid product from solid residuals; f) mixing of the liquid product obtained according to step e) with nitrogen, hypo-soluble selenium and eventually, in order to correct the proportions, with extra-virgin olive oil. The invention further relates to the product obtained by the above process.

Description

PROCESS FOR EXTRACTING AN OIL MIXTURE AND OIL MIXTURE OBTAINED BY SAID PROCESS

The present invention relates to a process for extracting an oil mixture.

The invention also relates to an oil mixture extracted by the above mentioned process.

Modern man is living a distortion of the biological time, since his physiology, his metabolic and digestive system are the result of an evolutive process of more than 50,000 years, so that the typical dietetic scheme of the hunter - gatherer man does not fit to the alimentary schema prevailing after the industrial revolution.

Particularly, during last 250 years a change of the alimentary regime occurred, connected to life costume and environmental conditions completely new. All the above brings to a very high relation between outer elements and evolutive adaptability, so that a many evolutive changing occurred, some of them surely positive (premature development, increase of the height) and other greatly negative (cardiovascular diseases, high frequency of cancer, ecc). In this situation, it seems to be necessary to develop and increase trend lines aimed to equilibrate the above mentioned distortions, in order to exercise a limitation of the problems to obtain a real wellness.

To this end, medicine and biology have rationally demonstrated what was often proposed by empirical terms from an ancient cultural heterogeneous tradition, i.e. the correlation existing between diet and health condition.

In fact, nowadays it is very evident the modification of the classic and historical frame of nutrition often disrespectful of the nutritive values and to preserve health. For great groups of population diet is monotone with a scarce content of vitamins and minerals, and present customs have determined a remarkable reduction of amylaceous substances and vegetal fibres with a contemporaneous increase of consumption of refined sugars.

In this context, the needing born to integrate the diet with elements able to make up for the above deficiencies.

Main object of the present invention is that of providing an innovative process allowing the extraction of an oil mixture, mainly containing extra virgin olive oil and grain germ oil, making it possible to maintain unmodified the characteristics of these two products, and particularly the content of α-topherol (vitamin E) contained in grain germ.

At present, for the extraction of vitamin e from grain germ oil, process employing solvents are used. These compounds must be obviously eliminated once terminated the extraction, since they cannot be maintained in the alimentary product. To this end separation processes must be used involving the increase of the temperature, said step determining a deterioration of the α-topherol properties, thus loosing the main features of the product. The solution suggested according to the present invention as already said allows to obviate to the above inconvenients, being it possible to cold extracting the product, thus without modifying the vitamin E properties.

The product obtained according to the present invention allows to reinforce the defence and protection capabilities of the organism cells with respect to the damages induced by endogenic agents (oxygen free radicals) and exogenic (aliments, smoke, polluting substances).

Furthermore, the product according to the invention allows to maintain the integrity of the genetic information by a remarkable increase of the reparative capability and minimisation of the damages induced to the soma.

A further advantage of the product according to the invention is that of promoting the enzymatic efficiency of the cellular cytoplasm, so that a gene changing is determined during the time, with more noticeable protective properties for proteins.

Further, the product according to the invention allows to obtain an increase of the germinative activity, mainly due to the high content of α-topherol (Vitamin E), since all the fecondative activities are developed, from spermatogenesis to the muscular tonifying of the genital apparatus tissues, to the menstrual cycle regulation. The increase of the fecondative activities postpone the decline of cellular capabilities and of the consequent physiological deficiencies due to the accumulation of the genetic transcription mistaken from DNA to defective RNA-enzymes, with the consequent decline. It is therefore the specific object of the present invention a process for extracting an oil mixture, comprising the steps of: a) mixing pre - arranged amounts of extra-virgin olive oil and grain germ; b) grinding of the obtained mixture obtained according to step a) by a machinery having all the parts in contact with the mixture made up of a material that chemically does not interact with the same mixture, said grinding being executed with a rotation speed that does not allow the creation of high peripheral speed maintaining the mixture temperature below about 30 - 35°, preferably 32°C; c) kneading of the mixture ground according to step b) within a machine for kneading having such geometrical shape and rotation speed not to allow to the mixture to exceed a temperature of about 30 - 35°C, preferably 32°C, and providing all the parts realised by a material that chemically does not interact with mixture; d) mechanical extraction of the final product by a pressure action of the obtained mixture; e) decantation of the product extracted from step d) with separation of the liquid product from solid residuals; f) mixing of the liquid product obtained according to step e) with nitrogen, hypo-soluble selenium and eventually, in order to correct the proportions, with extra-virgin olive oil.

Preferably, according to the invention, said step a) is preceded by a step a1 ) concerning the de-germination of grain.

Still according to the invention, during said step a) papaya and/or pine-seeds and/or hazelnuts seed oil can be added in percentage comprised in the range variable between 0.5 and 2% in weight of mixture.

Furthermore, according to the invention, during said step b) papaya and/or pine-seeds and/or hazelnuts seeds can be added in percentage comprised in the range variable between 1 and 5% of mixture.

Always according to the invention, said grinding step b) is carried out at a temperature lower than 32°C.

Still according to the invention, components of the apparatuses used during said steps b) and c) contacting the mixture are comprised of stainless steel and/or titanium and/or nylon and/or glass.

Always according to the invention, said kneading step c) lasts between 4 and 40 minutes.

Furthermore, according to the invention, said mechanical extraction step d) is carried out employing compression stacks each one comprising a stainless steel or titanium disk pack, synthetic fibre draining diaphragm.

Preferably, according to the invention, the thickness of the mixture in each pack is greater than 5 mm, and lower than 40 mm, diaphragms and titanium or stainless steel discs have an outer diameter between 250 mm and 850 mm, and a specific pressure on the mixture between 300 kg/cm² and 1200 kg/cm².

Furthermore, according to the invention, said decantation step can last between 3 and 96 hours, and is carried out repaired form light, heat sources and with product extracted during step d) protected from oxidation.

Always according to the invention, during step f) at most about 50 p.p.m. of hypo-soluble selenium.

The invention also relates a oil mixture obtained by the described process, said oil mixture being comprised of:

- extra-virgin olive oil 55 - 97%

- grain germ oil 3 - 45% Preferably, according to the invention, said mixture provides:

- extra-virgin olive oil 65 - 75% - grain germ oil 25 - 35%.

Still according to the invention, said oil mixture can provide up to at most about 50 p.p.m. of hypo-soluble selenium.

Furthermore, according to the invention, said oil mixture provides between 2 and 8% (preferably 5%) in weight of the papaya and/or hazelnuts and/or pine-seeds seed oil.

The present invention will be now described, for illustrative but not limitative purposes, according to its preferred embodiments, with particular reference to the figures of the enclosed drawings, wherein: figure 1 shows a scheme of a plant for the process according to the invention; and figure 2 shows a particular of the apparatus or the extraction step of the process according to the invention.

Making at first reference to figure 1 , by the numeric reference 1 the extra-virgin olive oil tank is indicated, while by numeric reference 2 the grain germ container is indicated.

Within containers 3, the de-germination step before the extra- virgin olive oil with the grain germ within the impregnation plant 4 occurs. Mixed mixture is then transferred within hopper 5, from which it is transferred to the grinding machinery 6. Said machinery 6 has all the parts coming into contact with mixture comprised of stainless steel or titanium, in such a way not to provoke the alteration of the active principles of Vitamin E contained into grain germ.

The grinding step is carried out by a rotating element with a rotation speed not inducing high peripheral speed, to avoid thermal energy development which otherwise would increase mixture temperature at a value higher than 32°C. After the grinding step, mixture is transferred into kneader 7, the latter also being realised with all the parts contacting the mixture comprised of stainless steel or titanium, to avoid alteration of active principles of Vitamin E.

The most delicate step of the extraction process occurs within kneader 7, since within this part occur the solvent function exerted by the olive oil on the cellular membranes of the fat part of the grain germ.

Kneader 7 has such geometrical configuration and rotation speed of rotating parts so that during the residence time of mixture (4 - 40 minutes) a temperature higher than 32°C does not occur. Exiting from kneader 7, mixture is placed within packs 8

(illustrated in greater detail in figure 2), which are then stacked forming pile 9, to be then transferred within the pressing machinery 10.

Each pack 8 is comprised of two disks 11 , respectively upper and lower, between which draining diaphragm 12 and mixture thicknesses 13 are provided.

Said discs 11 are made up of stainless steel or titanium and draining diaphragms are made up of high mechanical resistance synthetic fibre, inert with respect to the extracted product.

Disks 11 and diaphragm 12 have an outer diameter between 250 and 850 mm; disks 11 have a thickness between 5 and 25 mm, while mixture 13 has a thickness between 5 mm and 40 mm.

Mechanical stresses induced on the discs of machinery 10 bring to a specific pressure on the mixture between 300 kg/cm² and 1200 kg/cm². Pressing step lasts between 15 and 180 minutes and product temperature never passes 32°C. When the pressing step is finished, the liquid phase obtained is subjected to filtration in first filter or decanter 14, and then by pump 15, in second filter 16.

Subsequently, it is subjected to a mixing step with nitrogen, hypo-soluble selenium within the apparatus 17, and in case it is necessary to correct the proportions, also with extra-virgin olive oil. Finally, the final product is sent to the packaging 18. The decantation step is carried out within a stainless steel or titanium decanter 14, within which the product remains for a period of 3 - 96 hours, repaired from light, heat sources, and protected from oxidation. By the process according to the present invention it is thus obtained an aliment functional thanks to its formulation and symbiosis of particular qualities and good gusto. Furthermore, the by-product of the industrial working is comprised of substances having a high proteic content of essential ammino acids that along with 2 - 3% of residual oils with a high concentration of Vitamin E constitute a valuable product for fodder industry for zootechnical use, thus being a useful intermediate product for the production of valuable animal proteins.

The plant and the manufacturing process (use only of mechanical mixing and extraction action) have no negative impact with the environment, do not need great energy amount, do not employ chemical products and noxious substances.

Under the commercial point of view, the product can be included within the best Mediterranean cooking traditions, so that its use does not affect deeply the consumer customs.

As already said, the alimentary product is obtained from mixing of extra-virgin olive oil, grain germ oil and eventually papaya and/or pine- seeds and/or hazelnuts seed oil and hypo-soluble selenium, which are a cold mechanically extracted without the help of solvents. Therefore, the product obtained has optimum nutritional features.

It can be preferably used raw, thus developing a large spectrum biological action, thanks to the presence of the high content of α-topherol Vitamin E (Biologically active at 100% with a triple proportion with respect to β-α-topherol, respectively active at 33% - 6%), promoting the action using the other vitamin complexes contained, specifically enhancing and prolonging the action of Vitamin A, thus allowing a anti- arteriolar sclerotic function and a function of inhibition of thrombosis.

In view of the substances present in the obtained product with the process according to the invention develops a noticeable anti- oxidative action (inhibition of free radicals of oxygen) that synergically with selenium inhibit the reaction chain damaging DNA, thus contributing to an anti-ageing action. Further, an increase of production of enzymes

(glutathione peroxidase) having noticeable properties fundamental for longevity. Protective action of this element on the organism is evident at the level of the myocardial function, of the synthesis of colatorium

(inhibition of hepatic necrosis) and as co-factor for tumoral anti-promotion.

The product obtained, suitably preserved and packaged within inert atmosphere (without oxygen and preserved from solar light rays), has high immunologic and protective properties (many month from the manufacturing) for a long time for all the cells, included those of the cerebral system, following to a daily, even minimum ehxibition to the organism.

The present invention has been described for illustrative but not limitative purposes, according to its preferred embodiments, but it is to be understood that modifications and/or changes can be introduced by those skilled in the art without departing from the relevant scope as defined in the enclosed claims.

Claims

CLAIMS . Process for extracting an oil mixture, characterised in that it comprises the steps of: a) mixing pre - arranged amounts of extra-virgin olive oil and grain germ; b) grinding of the obtained mixture obtained according to step a) by a machinery having all the parts in contact with the mixture made up of a material that chemically does not interact with the same mixture, said grinding being executed with a rotation speed that does not allow the creation of high peripheral speed maintaining the mixture temperature below about 30 - 35┬░, preferably 32┬░C; c) kneading of the mixture ground according to step b) within a machine for kneading having such geometrical shape and rotation speed not to allow to the mixture to exceed a temperature of about 30 - 35┬░C, preferably 32┬░C, and providing all the parts realised by a material that chemically does not interact with mixture; d) mechanical extraction of the final product by a pressure action of the obtained mixture; e) decantation of the product extracted from step d) with separation of the liquid product from solid residuals; and f) mixing of the liquid product obtained according to step e) with nitrogen, hypo-soluble selenium and eventually, in order to correct the proportions, with extra-virgin olive oil.

2. Process according to claim 1 , characterised in that said step a) is preceded by a step a1 ) concerning the de-germination of grain.

3. Process according to claim 1 or 2, characterised in that during said step a) extra-virgin olive oil (3 - 45% in weight of mixture, preferably 5-20%) and grain germ (55 - 97% in weight of mixture, preferably 80-95%).

4. Process according to one of the preceding claims, characterised in that during said step a) papaya and/or pine-seeds and/or hazelnuts seed oil can be added in percentage comprised in the range variable between 0.5 and 2% in weight of mixture.

5. Process according to one of the preceding claims, characterised in that during said step b) papaya and/or pine-seeds and/or hazelnuts seeds can be added in percentage comprised in the range variable between 1 and 5% of mixture.

6. Process according to one of the preceding claims, characterised in that said grinding step b) is carried out at a temperature lower than 32┬░C.

7. Process according to one of the preceding claims, characterised in that components of the apparatuses used during said steps b) and c) contacting the mixture are comprised of stainless steel and/or titanium and/or nylon and/or glass.

8. Process according to one of the preceding claims, characterised in that said kneading step c) lasts between 4 and 40 minutes.

9. Process according to one of the preceding claims, characterised in that said mechanical extraction step d) is carried out employing compression stacks each one comprising a stainless steel or titanium disk pack, synthetic fibre draining diaphragm.

10. Process according to one of the preceding claims, characterised in that the thickness of the mixture in each pack is greater than 5 mm, and lower than 40 mm, diaphragms and titanium or stainless steel discs have an outer diameter between 250 mm and 850 mm, and a specific pressure on the mixture between 300 kg/cm² and 1200 kg/cm².

11. Process according to one of the preceding claims, characterised in that said decantation step e) lasts between 3 and 96 hours, and is carried out repaired form light, heat sources and with product extracted during step d) protected from oxidation.

12. Process according to one of the preceding claims, characterised in that during step f) at most about 50 p.p.m. of hypo- soluble selenium.

13. Oil mixture obtained by the process according to each one of the preceding claims, characterised in that said oil mixture is comprised of: - extra-virgin olive oil 55 - 97%

- grain germ oil 3 - 45%

14. Oil mixture according to claim 13, characterised in that it provides:

- extra-virgin olive oil 65 - 75% - grain germ oil 25 - 35%.

15. Oil mixture according to claim 13 or 14, characterised in that said oil mixture provides up to at most about 50 p.p.m. of hypo- soluble selenium.

16. Oil mixture according to one of claims from 13 to 15, characterised in that said oil mixture provides between 2 and 8%

(preferably 5%) in weight of the papaya and/or hazelnuts and/or pine- seeds seed oil.

17. Process for extracting an oil mixture according to each one of claim 1 - 12, substantially as illustrated and described.

18. Oil mixture according to each one of claims 13 - 16, substantially as illustrated and described.