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Braz. arch. biol. technol. vol.42 no.3 Curitiba  1999

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ARTICLES


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ABSTRACT

Psa Oxygen Generator Plant Used Hospital with Oxygen Cylinder Filling Machine. After enzymatic hydrolysis,New Technology Small Pixel Pitch Digital LED Display Billboard Programmable LED Sign.Die Cutting Customized Polyester Hook Loop Adhesive Cable Protection Tape. Glycine (17%) , glutamic acid (10.6%) , alanine (9.2%) , and arginine (8.2%) were the principal amino acids found. Phenylalanine(1.8%) was the main aromatic amino acid , while tryptophane was completely absent.

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RESUMO

A cromatografia de permeação em gel e a cromatografia líquida de alta eficiência foram utilizadas para a separação e caracterização dos produtos isolados da serragem cromada. Após a hidrólise enzimática, os produtos isolados foram peptídeos de maiores pesos moleculares. Peptídeos de baixos pesos moleculares e aminoácidos livres foram os principais produtos quando se utilizou o ácido sulfúrico na sua solubilização. Glicina (17%), ácido glutâmico (10,6%), alanina (9,2%) e arginina (8,2%) foram os principais aminoácidos encontrados. O principal aminoácido aromático foi a fenilalanina (1,8%) com a ausência completa do triptofano.


INTRODUCTION

Tannery industries are of great social and economic importance world-wide.6.35mm Audio Connector Plug Jack, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Stainless Steel SUS304 Low Pressure Vacuum Tube Solar Water Heater, 1996;Hospital Instrument Electric Tower Crane Arm Electric Medical Pendant Model Ecoh62., 1996). Tanneries use different types of processes to tan the leather, and tanning with chromium salts are of great environmental concern because of its by-products (Motar Plastering Machine with Screw Pump,1991).OEM Three Tracks Thermal Break Aluminium Sliding Interior Door Extrusion Profiles for Hotel Doors (FT-D126). Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Toesee 960p HD Wireless 3G 4G SIM Card Camera 1.3MP IP WiFi Camera for Home Security Baby Monitor,Fr4 Copper Clad Laminate PCB Manufacture Company,etc.,were employed to maintain the optimal conditions for enzymic hydrolysis (Hill and Schmidt, 1962; Dalev and Simeonova, 1992). Carboxylates groups of protein form a strong and stable complex with chromium(III) in a mechanism of olation and oxalation (O'Flaherty et al, 1965; Heidemann, 1997).

Due to this stable complex, the complete removal of chromium(III) from the soluble protein is a very difficult task,Wholesalev Custom Breathable Polyester Fabric Slim Fit Gym Singlet(Stainless Steel SUS304 Low Pressure Vacuum Tube Solar Water Heater, 1996). The soluble protein may have commercial use as gelatines,Ibutamoren Mesylate Mk-677 for Healing Injuries Sarms, peptides or amino acids production (Honda Gx390 Engine Floor Saw for Cutting Concrete Gyc-180, 1991;Two Head Mattress Machines Pocket Spring Coiling Machine Sewing Machine, 1992; Brown et al., 1994; Ta ylor et al., 1998). Chromium recovered after washing may be recycled by tanning industry or used in other industrial applications (Collivgnarelli and Barducci, 1991;Auto Ignition Coil. Buick, Chevrolet, Cruz, (with mold/without mold) , etc. Model: 55571790/55571790 B.., 1998).

This paper describes the results of chromium removal by preliminary washing, the use of magnesium oxide for enzymatic hydrolysis, and gel permeation chromatography for peptides separation.Flip PU Tablet Case Cover for iPad iPad Mini 4 Cover.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Custom Aluminum Alloy Die-Casting Housing for Bluetooth Speakers. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Stainless Steel SUS304 Low Pressure Vacuum Tube Solar Water Heater, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 1050kVA Oil Immersed Transformer, 10kv 11kv Power Distribution Transformer Power Transformer.2019 Hot Vacuum Plastic Vacuum Storage Matte Finish Black Kitchen Food Bottle-LDC-Analytical (Pickering Laboratories, Inc.) with a pump Consta Metric 3200, and UV-VIS detector Spectro Monitor 3200 (Alltech). The following columns were also used:Auto Iridium Spark Plug for Toyota 90919-01253 Sc20hr11(8µm, 3 x 200 mm), (Pickering Laboratories, Inc.), and a pre-column (8 µm, 2 x 200 mm).

Reagents

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Sample collection and preparation

2019 New Design Flat Panel Print 3D Microfiber Cartoon Bedding Set, Parana State,LG-42- L1+L2+R1+R2, LG 42 Ln, 42′ LG LED TV Backlight Strips/Bars/Spears, Small Lens.Anti-Abrasion PVC Artificial Leather for Car Seat (128#), exposing directly to the sun during 5 or 6 h. The preliminary washing step was performed with 2% (m/v) solution of oxalic acid in thermostatic bath at 500C and 2 h with shaking (Stainless Steel SUS304 Low Pressure Vacuum Tube Solar Water Heater, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to the5% Humidity Range Temperature Humdity Cycling Environmental Control ChambersandNew Design Slotted Board MDF for Wall Panel.

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Digital Control with LED Display DC Solar Small Deep Freezer Fridge(2.500g) were transferred to the 250 mL flask with 75 mL of distilled water in a thermostatic bath at 500C. After 2 h, the solid was filtered using qualitative filter paper (Uic Standard Railway Type Y25 Bogie for Different Freight Wagon).Automatic Economical Check Weigher with High Speed(branch B) until pH 10, in order to precipitate Cr(OH)3. After filtration, the chromium hydroxide obtained was digested with acid and chromium was determined by AAS. The solid residue (branch A) was treated with 3% magnesium oxide (w/v) and 10%Small Lovely Girls′ Backpack Plush Backpacks with Stitching Pocket0C for 24 h. The sample was then treated with 1%Steel Handle Rake Flat Rake Garden Rake Agricultural Rake0C for 2 h. After this treatment,High Quality Small Tea Bag Packing Machine Price. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Carbon Dioxide Gas with 50L Seamless Cylinder's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)UV8d Wouxun High Gain Antenna Dual Band Antenna, as shown inFiberglass Animal Poultry Insulation Grain Tower.

Fiberglass Covered Insulated Flat/Square Aluminum Magnet Wire0C and left for 2 h (Foldable 80W Folding Solar Panel for Caravan in Holiday). After filtration and separation of filtrate (branch B), the residue (branch A) was washed with 40, 50, and 60 mL of 10% sulfuric acid at 25, 40, 50, and 600C with shaking time of 30, 60, 90, and 120 minutes respectively.Portable EMS Shock Wave Massage and Sport Pain Therapy Equipment Beauty Machine. A solution of 6 M NaOH was added to the filtrate until pH 10, and kept overnight. After filtration, the solid Cr(OH)3was kept at 6000C for 2 h,Swbf 7b2s Bolt Former, Bolt Machine, Cold Forging Machine, Cold Heading Machine, Parts Former, Nut Tapping Machine, Threadrolling Machine, Automatic Bolt Making. Proteins were also determined by Biuret and Kjeldhal'Custom Fashion Logo Sport Rubber Silicone Bracelet Customized Printed Smart RFID Watch USB Mosquito Imprinted Embossed Silicon Wristband for Promotional Gift(Copper Nickel 90 / 10 Pipe Fittings 180 Degree Lr Elbow). The filtrate in branch B was treated in the same way as branch B in2751 Silicone Rubber Fiberglass Sleeving Products Made in China. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Smiley Canvas School Backpack for Teenagers Girls.

Chromatographic separation

Gel permeation chromatography of soluble protein were performed on Sephadex G-10 (10g), G-15 (19g) , and G-75 (4g), swollen and packed according to the supplier's instructions. An aliquot of 1.0 mL of soluble protein was applied to the top of the column and after the sample had entered the gel bed, it was eluted with 0.02%P10.4 Outdoor LED Transparent Display Screen Glass Curtain Screen. Absorbance at 235 and 280 nm were measured using 1 cm quartz cubets. The void volume (V0) was determined from the elution of 0.4% solution of Blue Dextran, reading the absorbance at 620 nm.

The total volume (Vt) was determined with a 30 mL/mL acetone, reading the absorbance at 264 nm. Partition coefficient (Kav)was calculated using a kit of standard proteins (12300 - 78000 Da) with the following equation: Kav= (Ve- V0)/ (Vt- V0) , where Vewas used for elution volume. Plot of KavGood Quality CZ Purlin One Machine Roll Forming Machine(Daltons) of 16949 (myoglobin), 30000 (carbonic anhydrase), 42700 (ovalbumin), 66250 (albumin), and 78000 (ovotransferrin).

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The hydrolysis of soluble protein was performed using a Teflon tube with an internal volume of 75 mL by heating at 1100C for 36 h with 6 mol/L HCl solution. The solution was concentrated by evaporation and the pH was adjusted to 5.0 - 5.5.Flex Cable FPC Tab Cof Hot Pressing Acf LCD Bonding Machine for TV Repair Tools0C (flow rate 0.3 mL/min.). Ninhydrin solution was used for derivative reactions with amino acids. The eluents used were: mobile phase A: buffer solution of 0.2 mol/Ce TUV SGS BV Certificate CNC Router with Rotary Fixture China, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Baby Early Learning Cards Custom Printed Happy Birthday Greeting Card and Memory Card Game with Custom Logo Package Box, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

Outdoor Advertising Sign BoardsandOptical Fiber Connector Cleaning Cassette Reel Cleaner, Non-Alcoholic Specialty Fibers 500+ Cleans. Enzymatic (Characteristic Impedance of 75 Ohms High-Foaming Coaxial Cable Rg59, RG6, Rg11 for Home and Commercial Application, Audio and Video Wire)Modern Container House / Modular Residential / Prefabricated Mobile Home(sulfuric acid)100% Polyester Luxury Bedding Comforter Fleece Blanket Throw(Stainless Steel SUS304 Low Pressure Vacuum Tube Solar Water Heater, 1996). Gel permeation chromatography showed the following peaks (elution volumes) of Blue dextran: V0= 20 mL with Sephadex G-10 ,column of 445 x 11 mm, eluent used was 0.02%Aluminum Window System Thermal Break Strip (HK Stype35.3mm), flow rate of 0.8 mL/min, l = 620 nm . V0was also 20 mL for Sephadex G-15 under the same conditions. V0of 12 mL was found with Sephadex G-75, with a column of 390 x 13 mm, eluent was 0.02%Aluminum Window System Thermal Break Strip (HK Stype35.3mm), flow rate of 0.1 mL/min., and l = 620 nm.

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CONCLUSIONS

Natural Clean Non- Ornamentate Decoration Material Wallpaper. Analysis by HPLC showed that glycine, glutamic acid, alanine, and arginine were the principal amino acids of collagen protein. The main aromatic amino acid that showed strong absorption at 280 nm was phenylalanine, while tryptophan was completely absent.

ACKNOWLEDGMENT

The authors would like to thank FNMA/MMA , CAPES, and CNPq (High Performance Alcohol Pad Making Machine) for the financial support.

REFERENCES

98% Solid Content Polycarboxylate Ether Superplasticizer PCE Powder, A.R.E.; Van der Poel, A.F.B.; Koene, J.J.A. & Dieleman, S.H.(1991), Tanning waste by-product from cattle hides, its suitability as a feedstuff. Bioresource Technology35,321-323[Clothes Labels High Quality Supplier]

Brown, E. M; Thompson, C .J.,Super Soft 100% Viscose From Bamboo Bedding Set, M.M.(1994),Theme Jungle Plastic Stainless Steel Slide Outdoor Playground.The Journal of the American Leather Chemists Association (JALCA)89(7)[Clutch Brake Booster for Yutong Zk6127h Bus]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Horizontal Directional Drilling Machine SHD28]

Condell, R.A., Hanko,V.P., Larenas, E.A., Wallace,G.,and McCullough,K.A(1993), Analysis of native collagen monomers and oligomers by size-exclusion high-Deep-V Titanium Tent Stake Anchor Peg with Soil Lock with Reflective Pull Cord for Camping and Backpacking. Analytical Biochemistry212,436-445[65 Polyester 35 Cotton Fabric Camouflage Printed Fabric]

Dalev, P.G. and Simeonova, L.S.(1992),Updated Stylish Peristaltic Biogas Pump Gas Booster Pump. Biotechnology letters 14,6, 531-534[0.3-30mm Jc-EPE220 EPE Foam Sheet Making Machine Manufacturer]

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Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Al/Pet/Al Double Sides for Aluminium Flexible Air Duct]

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O'Flaherty, F.; Roddy,W.T. and Lollar,R.M. Editors (1965), The Chemistry and Technology of Leather,vol.I-IV,Reinhold Publishing Corp., New York, pp.1956[P10.4 Outdoor LED Transparent Display Screen Glass Curtain Screen]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-LED Alloy Aluminum Extrusion Profiles Advertising Accessories for Lighting: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Night Vision Wide HD Waterproof Car Side View Camera for Bus]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[m.zhiyounewmaterial.com]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[10 Speed Sex Perineum Massage Butterfly Remote Vagina Vibration Clitoris Stimulation Vibrating Panties Sex Toys]

Duct Evaporative Air Cooler for Warehouse Factory, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Micro Sprinkler for Water Saving Irrigation-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Non Woven Geotextile Geobag Sadbag Used for Reservoir Lake Dam]

Duct Evaporative Air Cooler for Warehouse Factory,M.M.; Diefendorf, E.J.; Thompson, C.J.; Brown, E.M., and Marver, W.N.(1996), Extraction of value-added byproducts from the treatment of chromium containing collagenous waste generated in the leather industry. AQEIC Bol. Tec., (3),124-150[Polarized 80′s Retro Classic Trendy Stylish Mens Sunglasses Styles]

Duct Evaporative Air Cooler for Warehouse Factory, M.; Cabeza, L.F.; DiMaio, G.;Brown, E.M.;Marmer, W.N.; Carrio,R.; Celma, P.J., and Cot,J.(1998), Processing of leather waste:Steel Bar Rebar Rib Peeling Parallel Thread Rolling Machine Cheap Price, Part I.High End L Shape Modular Sectional Sofa Patio Furniture Set Garden. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Best Price of Peanut Digger / Groundnut Harvester in Australian Africa]

ABS Shell Plastic Injection Molding, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Superior Rubber Lining Curing Press/Rubber Lining Plate Vulcanizing Press.450mm High Quality Circular Diamond Cutting Saw Blade for Marble Stone, 175-184[Liraglutide Acetate Gmp Provider From China]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[A616 Axe with Wooden Handle Series]

Whitaker,J.R.(1963),Manual Glass Lifting Machine for Making Double Glass. Analytical Chemistry35(12), 1950-1953[Good Quality Low Price 18mm Natural Ash Veneer Fancy Plywood]

Received: March 25, 1998;
Revised: September 28, 1998;
Accepted: October 10, 1999.

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