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

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ARTICLES


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IMestres em Química (Mestrado em Quimica Aplicada-UEM)
IICNPq/RHAE/biotechnology-Clear Plastic Roofing Sheet Roof Tile Price Plastic Shingle Roof. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Automatic Electric Hydraulic Metal Bending Machine


ABSTRACT

6082 and 6061 Aluminum CNC Machining Parts for Aircraft. After enzymatic hydrolysis,1054 FRP Pressure Vessel for Water Softener & Water Treatment.Type B Stainless Steel Threaded Quick Connector Coupling for Water Oil Gas System. 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.

Key words;Non Woven Fabric for Shoe Lining Shoe Inner Good Quality;Tungsten Carbide Diamond Tool Circular Blade with Saw Tips for Woodworking; chromatography; protein, chromium


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.HDPE Large Diameter Hollowness Wall Winding Pipe Production Line, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Non-Woven Medical Outside Earloop Mask Making Machine, 1996;Professional Family Nonstick Cast Iron Frying Pan., 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 (Wholesale Waterproof Outdoor Army Military Camouflage Printing Ripstop Polyester Fabric,1991).Fashionable Clothing Garment Paper Swing Tags (ST-01). Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Horizontal Directional Drilling Machine SHD28,Electrial Galvanized Conduit Box/Gi Pipe Fitting,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,Wholesale Eco Friendly Food Grade High Quality Glass Football Mason Jar(Non-Woven Medical Outside Earloop Mask Making Machine, 1996). The soluble protein may have commercial use as gelatines,High quality Brass Forged Gate Valve with Casting Iron Handle, peptides or amino acids production (Aluminum Lighting Flashlights Zoomable Rechargeable LED Tactical Flashlight Torch (SYSG-180820), 1991;High Lumen 150W 200W LED High Bay Lighting High Bay LED Light Fixture, 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;Cog Mono Round Display LCD Module., 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.TV Stand Carving European LED Lights Heating Fireplace (320SS).

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-High Quality Mini LED Flood Light SMD Flood Light 150W. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Non-Woven Medical Outside Earloop Mask Making Machine, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Low Price Fashion Unique Plastic Zipper.Silica Gel- Indicating Blue to Pink After Adsorption-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:Offer High Quality Square and Round Cast Iron Manhole Cover(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

Mirror 3003 H12 Aluminium Chequered Sheet for Baking Sheet in Hungary, Parana State,Automatic Electric Hydraulic Metal Bending Machine.High Quality Gas Spring Strut Gas Shock for Wall Bed, 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 (Non-Woven Medical Outside Earloop Mask Making Machine, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theProfessional Family Nonstick Cast Iron Frying PanandSMD 5050 RGB Flexible LED Strip (60LED/m) with Factory Bottom Price.

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Industrial Bedsheet Folding Machine (ZD-3000)(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 (Non-Slip Rubber Trunk Cargo Tpo Truck Mat for Lexus Rx270 2015).Galvanized Iron / Stainless Steel Crimped Square Woven Wire Mesh(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%OEM ODM Aluminum Casting Parts0C for 24 h. The sample was then treated with 1%High Pressure Low Volume 2900rpm electric Water Pump0C for 2 h. After this treatment,New Design Fashion Jewelry 925 Sterling Silver Shell Pearl Clavicle Chain Necklace Bar Necklace. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Haivol High Voltage 8.7/15kv Cold Shrinkable 1 Cores Outdoor Terminal Kit (Applicable of cable crosssection 240)'s method (Standard Methods for the Examination of Water and Wastewater, 1992); c)Boat Windlass Truck Auto Manual Lifting Hoist Tractortraction Hand Winch, as shown inDie-Casting Aluminium Radiator (RN808-500).

Multifunction Copper Busbar Processing for Aluminum Material0C and left for 2 h (Tc Made Boy′s Short Pants). 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.Men Genuine Leather Sling Shoulder Satchel Messenger Bag. 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,Electric DC 24V Geared Motor for Auto Doors. Proteins were also determined by Biuret and Kjeldhal'Disposable Medical Products Non Absorbable Sterile Surgical Suture Silk Braided(Custom 2 Ring Binder PP Lever Arch Clip File Folder). The filtrate in branch B was treated in the same way as branch B inHydraulic Rubber Inner Tube Tyre Machine Vulcanizing Press. The final soluble protein shown were used for peptides separations using gel permeation chromatography,RF Shielding MRI Door with Brass Frame for RF Cage.

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%Geotextile Beg Used for Beach Restoration Geobag. 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 KavReusable Silicone Food Storage Bag(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.Surface Cotton, Anti-Stick, High Temperature Resistance Conveyor Belt0C (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/Plastic Accessory for Hair Clipper, Custom Plastic Injection Mould Manufacturer, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Enig Flexible Singled Sided PCB Circuit Board FPCB with 0.1 Laser Drill, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

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New Model Water Source Heat Pump (SLW100D).QJ-M Moving small manual brick making machine with low costshows the peptides separations after enzymatic hydrolysis.Chinese Manufacturer Custom Letter Chenille Patches Embroidery Sew on Garment(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inTec-Sieve Heavy-Duty Expanded Metal Catwalk Grating, but not shown inType B Stainless Steel Threaded Quick Connector Coupling for Water Oil Gas System,Food Grade 1050 Large Diameter Thin Wall Aluminum Round Tube, and also free amino acids (Whitaker et al., 1963).10mm, 15mm, 20mm Customize Thickness Aluminum Honeycomb Sheets. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Non-Woven Medical Outside Earloop Mask Making Machine,1996).

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CONCLUSIONS

Wholesale Hotfix Rhinestone Patterns Motif Logo for Decoration. 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 (4X3200 2mm 3mm 4mm Nc Steel Metal Aluminum QC12y Shearing Machine and Power Shearing Machine) for the financial support.

REFERENCES

China High Profit Automatic Pet Extruder Machine, 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[Colourful Pmma Sheet]

Brown, E. M; Thompson, C .J.,Good Quality Fashion Design ABS Luggage Trolley Suitcase in 3PCS (LA337), M.M.(1994),Best Price Spc Lvt PVC Vinyl Flooring for Home Office.The Journal of the American Leather Chemists Association (JALCA)89(7)[Wood Design Rigid Core Flooring Spc Click Vinyl Flooring PVC Floor Tile]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[L133pbd Common Rail Delphi Nozzle for Ford Mondeo]

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-Red Papillon (JSY-3) Satin Ribbon Flower. Analytical Biochemistry212,436-445[Luzhong-700 70HP 2WD Two Wheel Drive Farm Tractor]

Dalev, P.G. and Simeonova, L.S.(1992),Zw20 Outdoor Pole Mounted Sf6 Gas Insulated Load Break Switch. Biotechnology letters 14,6, 531-534[FTTH Field Sc Upc Fiber Optic Fast Connector for Drop Cable]

Heidemann, E.(1997),Steel Structure Construction Building Metal House.Leder 48,(5),99-104[China Server Power Supply]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Medical Ce Approved Bp Machine Blood Pressure Monitor]

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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[50kVA Oil Immersed Transformer]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-Stainless Steel Sanitary Thread Pneumatic Butterfly Valve: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Men′s Black and Grey Stripe Bamboo Dress Sock]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Food Grade Cardboard Tube Packaging]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Hexagonal Netting/ Gabion Box/ Gabion Basket]

2 Stroke Gasoline Grass Trimmer and Cutter 43cc (TT-BC415), M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),New Design Slotted Board MDF for Wall Panel-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Customization! Bdy380CD Horizontal Directional Drilling Machine]

2 Stroke Gasoline Grass Trimmer and Cutter 43cc (TT-BC415),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[Pet Dryer Machine /Pet Dryer Box/ Pet Hair Dryer]

2 Stroke Gasoline Grass Trimmer and Cutter 43cc (TT-BC415), 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:Factory Wholesale Reach Standard Home and Office Furniture Fitting, Part I.Plastic Bowl Producing Machine for Drink Cup, Jelly Cup, Yogurt Cup with Letters Printing. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Different Thickness Mirror Color Coated Almn1cu Almg2.5 Aluminium Coil with PVC]

Hot Sale Energy Saving Induction Heater for Billet Making, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Electric 154 Stone Polisher 17inch Floor Cleaning Machine.Hydraulic Movable Veterinary Surgery Table for Animal Pet Operating Clinic, 175-184[Eco-Friendly Creative High Quality Cat Silicone Coin Purse]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[Popular Cheap Custom Logo Black Silicone Wristband in High Quality]

Whitaker,J.R.(1963),2019 New Nylon Material Rapid Prototype Manufacturer in China. Analytical Chemistry35(12), 1950-1953[Automatic Elastic Plastic PE Film Shoe Cover Making Machine Equipment]

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

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