COLLAGEN NANOPARTICLES FROM SCALY FISH SKIN

Abstract

Disclosed are collagen nanoparticles obtained from waste scaly skins from fish by using a micro fluid technique, a method for obtaining the collagen nanoparticles, and their field of use.

Claims

1. A method in which the a micro fluid technique is used for obtaining collagen nano particles from scaly fish skins, characterized in that; it comprises the following process steps: i. boiling the scaly fish skins in a solvent, ii. filtering liquid collagen extract obtained as a result of the boiling process, iii. obtaining collagen micro bubbles by means of sending the filtered liquid collagen extract and an inert gas simultaneously to micro channels within a micro fluid device, and iv. obtaining collagen nano particles by means of drying the collagen micro bubbles.

2. The method according to claim 1, wherein said scaly fish skins comprise waste scaly skins obtained from fish.

3. The method according to claim 1, wherein said solvent is distilled water, isotonic water, serum physiological, alkaline water, vinegar, tap water and/or acetic acid.

4. The method according to claim 3, wherein said solvent is distilled water.

5. The method according to claim 1, wherein said scaly fish skin is carp skin, salmon skin, grey mullet skin, sea bass skin, coral fish skin, sea bream skin, dentex skin and/or gilthead seabream skin.

6. The method according to claim 5, wherein said scaly fish skin is a carp skin.

7. The method according to claim 1, wherein said inert gas is nitrogen gas.

8. The method according to claim 1, wherein in the process step of (i) a 1:1 ratio of scaly fish skin by weight:volume and the solvent are boiled.

9. The method according to claim 1, wherein in the process step of (i) the boiling process is realized during 5-10 minutes at 100-135° C. temperature.

10. Collagen nanoparticles obtained from the scaly fish skins with the method according to claim 1.

11. The use of the nanoparticles according to claim 10 as an auxiliarry substance in human and veterinary medical products.

12. The use of the collagen nanoparticles according to claim 10 as a food supplement or feed supplement.

13. The use of the collagen nanoparticles according to claim 10 in dermatological or cosmetic products.

14. The use of the collagen nanoparticles according to claim 10 in textile products.

15. Plaster or dressing comprising collagen nanoparticles according to claim 10.

Description

FIGURES CLARIFYING THE INVENTION

[0016] FIG. 1 is the tension-strain curve of the dried form the extract obtained from the scaly fish skin and water.

[0017] FIG. 2 is the tension-strain curve of the dried form the extract obtained from the scaly fish skin and vinegar.

[0018] FIG. 3a, is the view of the haemostasis experiment results of the blood to which serum physiological is added as the control group.

[0019] FIG. 3b, is the view of the haemostasis experiment results of the blood to which undiluted fish skin fluid extract is added as the experimental group.

[0020] FIG. 4a, is the view of the haemostasis experiment results of the blood to which serum physiological is added as the control group.

[0021] FIG. 4b, is the view of the haemostasis experiment results of the blood to which fish skin fluid extract diluted in a ratio of 1/10is added as the experimental group.

[0022] FIG. 5 is the SEM image of collagen micro bubbles.

[0023] FIG. 6a is the SEM view of the collagen nanoparticles of the invention with 5000-magnification.

[0024] FIG. 6b is the SEM view of the collagen nanoparticles of the invention with 30000-magnification.

[0025] FIG. 6c is the SEM view of the collagen nanoparticles of the invention with 60000-magnification.

DETAILED DESCRIPTION OF THE INVENTION

[0026] In this detailed description, the inventive method is described only for clarifying the subject matter in a manner such that no limiting effect is created.

[0027] The invention, is related to the collagen nanoparticles obtained from the waste scaly skins from the fish by using micro fluid technique; to the method for production of said collagen nanoparticles and their field of use.

[0028] The method in which the micro fluid technique is used for obtaining collagen nano particles from the scaly fish skins mainly comprises the following process steps;

[0029] i. Boiling the scaly fish skins in a solvent,

[0030] ii. Filtering the liquid collagen extract obtained as a result of boiling process,

[0031] iii. Obtaining collagen micro bubbles by means of sending the filtered liquid collagen extract and an inert gas simultaneously to the micro channels within the micro fluid device,

[0032] iv. Obtaining collagen nano particles by means of drying the collagen micro bubbles.

[0033] In one embodiment of the invention; in the process step (i) preferably; scaly fish skin and the solvent in a ratio of 1:1 by weight: volume are boiled at a temperature of 100-135° C. for 5-10 minutes.

[0034] In an embodiment of the invention, the scaly fish skin is the waste scaly fish skin that is remained from the fish production. Thus a waste product is converetd into a product with high added value.

[0035] In one embodiment of the invention, as said scaly fish skin, an individual or combinations selected from the following group is used; carp skin, salmon skin, gray mullet skin, sea bass skin, coral fish skin, sea bream skin, dentex skin and/or gilthead seabream skin. In a preferred embodiment of the invention, the scaly skins obtained from the carp fish are used.

[0036] In one embodiment of the invention said solvent is selected from the following group individually or in combinations; distilled water, isotonic water, serum physiological, alkaline water, vinegar, tap water and/or acetic acid. In a preferred embodiment of the invention, distilled water is used as the solvent.

[0037] Collagen nanoparticles are obtained for the first time using the micro fluid technique for the first time by means of the developed invention. According to an embodiment of the invention, the inert gas which is preferred in the micro fluid device is the nitrogen gas.

[0038] Different inert gases can be used in the alternative applications. Moreover, the obtained collagen nanoparticles are obtained in cubic form in a shape controlled manner and this type of collagen structure is developed for the first time.

[0039] In the studies made by the owners of the invention, a study of an example of the invention is submitted herein below in detail.

[0040] For the example study, 100 grams of scaly fish skin was taken from the carp fish and was boiled in 100 ml distilled water at 100° C. temperature for approximately 10 minutes. The liquid extract that contains obtained fish collagen was filtered through a mesh filter and the solid materials were removed. In one channel of a micro fluid device having two channels with T shape, the filtered liquid extract is input and in the other channel the inert nitrogen gas is input. The micro bubbles formed as a result of the operation of the device were dropped onto a glass surface and thus dried at 21° C. temperature for 3 days. As a result of drying the micro bubbles; collagen nanoparticle with cubic form were obtained. The obtained collagen nanoparticles were detected by means of the scanning electron microscope (SEM).

[0041] In the abovementioned study; the proteins contained in the filtered liquid collagen extract were analysed and the results are given herein in the Table 1 below.

TABLE-US-00001 TABLE 1 Proteins that are contained in the liquid extract Normalized Raw Spectral abundance abundance counts Number of Unique Safety Condition 1 Condition 1 Condition 1 Participation peptides peptides point Mass Description MC_170219 MC_170219 MC_170219 O34194 1 1 6.1485 44257.8 60 kDa chaperonin 32403.76 32403.76 1 (Protein Cpn60) (groEL protein) P02452; P02453; 1 1 6.1502 139910.1 Collagen alpha 1(I) 77903.39 77903.39 1 P02457; Q9XSJ7 chain precursor. P02563; P02564; P12883; P13533; P13539; P13540; P79293; Q02566 P11087 1 1 4.8174 224307.1 Myosin heavy 1100.048 1100.048 1 chain_cardiac muscle alpha isoform ( P17756 2 2 5.5321 138970 Collagen alpha 1(I) 17558.9 17558.9 1 chain precursor P31431 1 1 8.5997 58850.15 GAG polyprotein 25068.39 25068.39 2 [Contains: Core protein P16; Core P96471 1 1 5.0724 21641.6 Syndecan-4 precursor 3979.466 3979.466 1 (Amphiglycan) (SYND4) (Ryudoc Q57766 1 1 11.9468 49910.21 Streptokinase precursor 522727.3 522727.3 4 11.8248 32786.84 Formylmethanofuran-- 148898.1 148898.1 2 tetrahydromethanopterin formyl indicates data missing or illegible when filed

[0042] In the abovementioned study; the cytotoxicity tests of the filtered liquid collagen extract were performed and the results are given herein in the Table 2 below.

[0043] They are the measurements taken at 450/630 according to the WST1 viability test. Three 100 ul was taken from each well and the transferred ones into 96-well plate were measured. 3 plastic controls (cells which grow completely in their own conditions and there is nothing on them), 3 controls with whatman (cells which grow in the conditions wherein the whatman paper is placed on the cells) and 5 cells which grow in the conditions where extract impregnated whatman paper is placed on the cells. The experiment is made with L929 cells.

TABLE-US-00002 TABLE 2 Cytotoxicity Test Results Std average Average deviation Plastic Control 1 Plastic cells 1 3.523 3.670 3.636 3.610 100 100 0.679 Plastic Control 2 Plastic cells 2 3.571 3.694 3.705 3.657 101 Plastic Control 3 Plastic cells 3 3.553 3.703 3681 3.646 101 Watman Control 1 PBS Cells with watman 1 3.544 3.653 3.662 3.620 100 100 0.328 Watman Control 2 Empty Cells with watman 2 3.519 3.638 3.631 3.596 99 Watman Control 3 Empty Cells with watman 3 3.549 3.634 3.636 3.606 100 Experiment 1 Cells added extract 1 3.602 3.674 3.666 3.647 101 101 0.775 Experiment 2 Cells added extract 2 3.695 3.700 3.717 3.704 102 Experiment 3 Cells added extract 3 3.697 3.696 3.625 3.673 101 Experiment 4 Cells added extract 4 3.682 3.691 3.716 3.696 102 Experiment 5 Cells added extract 5 3.650 3.631 3.644 3.642 101

[0044] In said study; the filtered liquid collagen extract was analysed by the ASTM E2149 Antibacterial Test Method. The results are given in the following table. It is stated in A: liquid collagen extract obtained from the scaly fish skin and water; B: liquid collagen extract obtained from the scaly fish skin + vinegar.

TABLE-US-00003 TABLE 3 Antibacterial efficacy values against Staphylococcus aureus (ATCC 6538).sup.a according to ASTM 2149 Test Method 30 minutes 2 hours 5 hours Item Reduction in bacteria number Sample (%) log (%) Log (%) log 1 A 3.00 0.01 −6.50 −0.03 −19.50 −0.09 2 B −100.00 −4.66 −100.00 −4.66 −100.00 −4.66 .sup.aThe bacteria concentration transferred to each sample with 1 gram weight is calculated as 4.54 × 10.sup.4 (log 4.66) cfu*/ml. *cfu: Colony forming unit. Note: (+) shows the % bacteria values representing the increase in the number of bacteria, (−) shows the % bacteria value representing the decrease in the number of bacteria. (−) 100 value indicates all bacteria on the surface.

TABLE-US-00004 TABLE 4 Antibacterial efficacy values against Escherichia coli (ATCC 35218).sup.b according to ASTM 2149 Test Method 30 minutes 2 hours 5 hours Item Reduction in bacteria number Sample (%) log (%) Log (%) log 1 A 12.50 0.05 43.75 0.16 127.08 0.36 2 B 2.08 0.01 21.88 0.09 31.25 0.12 .sup.bThe bacteria concentration transferred to each sample with 1 gram weight is calculated as 2.08 × 10.sup.4 (log 4.34) cfu*/ml. *cfu: Colony forming unit. Note: (+) shows the % bacteria values representing the increase in the number of bacteria, (−) shows the % bacteria value representing the decrease in the number of bacteria. (−) 100 value indicates all bacteria on the surface.

[0045] In said study; the filtered liquid collagen extract was dropped onto a glass surface in a thin film and thus dried at 21° C. temperature for 3 days. The steam permeability of the dried collagen extract film was analysed and the results are given herein Table 5 in the following.

TABLE-US-00005 TABLE 5 The Steam Permeability of the Dried Conditions of the Extracts Obtained from the Scaly Fish Skin 21.6° 42% 30° 34% 40° 27% MOISTURE MOISTURE MOISTURE Empty 79.31537 406.6933 496.0771 Parafilm 0.514756 0.782228 1.695479 Fish Skin + Water 24.66541 29.00761 50.66489 Fish Skin + Vinegar 18.12371 24.64018 48.57048

[0046] In the abovementioned study; the mechanical tests were performed by recording the tension and strain values of the samples prepared in 4 cmx 1 cm width/length dimensions from the dried collagen extract film obtained by drying the filtered liquid collagen extract under a pulling force having 5 %/min increase rate. In Figure the tension-strain curve of the dried form the extract obtained from the scaly fish skin and water is shown. In FIG. 2 the tension-strain curve of the dried form the extract obtained from the scaly fish skin and vinegar is shown.

[0047] In said study; the haemostasis experiment is made to the filtered liquid collagen extract. The experiment results of the blood to which undiluted fish skin fluid extract is added as the experimental group and the blood to which serum physiological is added as the control group are given in FIG. 3a and FIG. 3b. The experiment results of the blood to which undiluted fish skin fluid extract is added in a ratio of 1/10as the experimental group and the blood to which serum physiological is added as the control group are given in FIG. 4a and FIG. 4b.

[0048] In said study; the collagen nanoparticles obtained by the micro fluid technique were detected by means of the scanning electron microscope (SEM). In FIG. 5 the SEM image of collagen micro bubbles obtained from the micro fluid device is given. In FIG. 6, SEM image of the collagen nanoparticles in cubic form obtained by means of drying the collagen micro bubbles is given (FIG. 6-a 5000 magnification, FIG. 6b 30000 magnification, FIG. 6-c 60000 magnification).

[0049] In the invention it is provided that the collagen obtained from the fish skins can be absorbed 1.5 times more by the human body and can be mixed with the blood faster than the collagen obtained from other sources. This condition leads to an advantage in terms of medical uses. Moreover, the fish skin facilitates the production step and reduces the cost. Since it is a biological material, the side effects caused by chemical substances do not occur. The invention covers the use of said nanoparticles obtained from the scaly fish skin as an auxiliary substance in human and veterinary medical products. An example of this type of use of an appropriate plaster or dersssing containing said collagen nanoparticles for use in skin wounds and bleedings. Also said collagen nanoparticles can be used as an anti-bleeding, healing accelerator, antimicrobial or cell regenerating agent. The invention also covers the use of the nanoparticles obtained from said scaly fish skin as a food supplemet or feed supplement. The examples for this type of uses are the beverages containing collagen nanoparticles or capsullescontaining collagen nanoparticles. The invention also covers the use of the nanoparticles obtained from said scaly fish skin in dermathological and cosmetic products. The cosmetic forms such as base, gel, cream, serum or injections for the emulsions and cosmetic creams containing the inventive collagen nanoparticles are examples to this type of use. The invention also covers the use of the nanoparticles obtained from said scaly fish skin in the textile products. During the production of fabrics that contact with the skin, the required textile products can be obtained by using the encapsulated method as an anti-bleeding, healing accelerator, antimicrobial or cell regenerating agent.