SE463315B

SE463315B - PROCEDURE FOR EXTRACTION OF OIL FROM FISHING

Info

Publication number: SE463315B
Application number: SE8900206A
Authority: SE
Inventors: Felix Eriksson
Original assignee: Felix Eriksson
Priority date: 1989-01-20
Filing date: 1989-01-20
Publication date: 1990-11-05
Also published as: WO1990008179A1; AU4954390A; SE8900206L; EP0454755A1; SE8900206D0; FI913499A0

Description

15 20 25 30 35 463 E? Un 2 2-4 dygn. Efter denna djupfrysningsperiod tas materia- let ut och förvaras i en omgivning med en temperatur inom området mellan +5°C och 20°C i och för tinande, varefter detsamma uppvärms till över +30°C och före- trädesvis till en temperatur inom omrâdet mellan +40°C och +50°C samt hålles vid denna temperatur under en tid av minst l timme. Denna uppvärmning kan företrädes- vis drivas med en sådan hastighet att temperaturen ökar med ca 5-30°C/timme. Under denna uppvärmning förvaras fiskrenset lämpligen i en första, vätskegenom- släppande behållare, t ex en nätkasse med finmaskigt nät eller ett kärl med silduk, som i sin tur lokaliseras i eller över en andra, icke-vätskegenomsläppande behål- lare. Under dylik uppvärmning kommer, såsom utförda försök visat, en §§§EÅQ9ÉPÉ}lêRd$_YäÉ§k§ri form av olja att successivt extraheras ur det uppvärmda materia- let och får droppa ur den första, vätskegenomsläppande behållaren ned i den andra, vätskeuppsamlande behållaren. 15 20 25 30 35 463 E? Un 2 2-4 days. After this freezing period, the material is taken out and stored in an environment with a temperature in the range between + 5 ° C and 20 ° C for thawing, after which it is heated to over + 30 ° C and preferably to a temperature within the range between + 40 ° C and + 50 ° C and maintained at this temperature for a period of at least 1 hour. This heating can preferably be operated at such a speed that the temperature increases by about 5-30 ° C / hour. During this heating, the fish cleaner is suitably stored in a first, liquid-permeable container, for example a net bag with a fine-mesh net or a vessel with a screen cloth, which in turn is located in or over a second, non-liquid-permeable container. During such heating, as experiments have shown, a §§§EÅQ9ÉPÉ} læRd $ _YäÉ§k§ri form of oil will be gradually extracted from the heated material and allowed to drip from the first, liquid-permeable container into the second, liquid-collecting the container.

Vid de försök som utförts har kunnat konstateras att andelen olja eller oljeformig vätska som erhålls genom processen kan uppgå ända till 70 - 80% räknat på fisk- rensets vikt i_fast form. Den genom processen erhållna oljan är lättflytande vid rumstemperatur (har ungefär samma viskositet som symaskinsolja) och stabil vid förvaring i rumstemperatur på så sätt att dess egen- skaper ej förändras. Därest utgångsmaterialet, dvs fiskrenset, befrias från blodinnehàllande beståndsdelar, såsom hjärta och lever, blir den erhållna oljan klar och ljust gulfärgad, varvid med ökande mängd blodhaltiga beståndsdelar i renset dock erhålls oljor med till- tagande rödfärgning.In the experiments that have been carried out, it has been established that the proportion of oil or oily liquid obtained through the process can amount to as much as 70 - 80% calculated on the weight of the fish cleaner in solid form. The oil obtained by the process is easily liquid at room temperature (has approximately the same viscosity as sewing machine oil) and stable when stored at room temperature in such a way that its properties do not change. To the extent that the starting material, ie the fish cleanser, is freed from blood-containing constituents, such as heart and liver, the resulting oil becomes clear and light yellow, whereby with increasing amounts of blood-containing constituents in the purifier, oils with increasing red color are obtained.

Den erhållna oljan innehåller många värdefulla beståndsdelar, såsom omättade fettsyror, varför den- samma kan användas inom en rad tekniska områden, t ex såsom råmaterial för tillverkning av livs- och läkemedel, kosmetika, smörjmedel, bränslen, etc.The oil obtained contains many valuable constituents, such as unsaturated fatty acids, so that it can be used in a number of technical fields, for example as raw materials for the manufacture of food and pharmaceuticals, cosmetics, lubricants, fuels, etc.

Claims

10 15 20 25 30 J ﬂ Cm 04 g \ Un PATENTKRAV

A process for extracting oil from a fish cleaner, comprising the step of heating the cleaner to a temperature above + 30 ° C while storing the same in a liquid-permeable container from which oil extracted by heating is separated by dripping out of the container. with the remainder of the purge remaining in the container, characterized in that the fish purifier in an initial step before heating to said temperature is deep-frozen, ie frozen to a temperature below -18 ° C, after which it is thawed out of the deep-frozen state.

Process according to Claim 1, characterized in that the deep-freezing is operated at a temperature in the range between -20 ° C and -30 ° C.

3. A method according to claim 1 or 2, characterized in that the fish cleaner is kept frozen for a period of at least one day.

4. A method according to any one of the preceding claims, characterized in that the material is kept heated to a temperature above + 30 ° C for a period of at least one hour.

Process according to any one of the preceding claims, characterized in that said heating is carried out to a temperature in the range between + 40 ° C and + 50 ° C.

6. A method according to claim 5, characterized in that the temperature is increased during said heating step at a rate of 5-30 ° C per hour.

7. A method according to any one of the preceding claims, characterized in that entrails from salmonids are used as fish cleaners.