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Print versionISSN1516-8913
Braz. arch. biol. technol. vol.42 no.3 Curitiba 1999
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ARTICLES
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ABSTRACT
3.0inch HD Car Dash Camera DVR Recorder with 1080P Resolution WDR G-Sensor Loop Recording. After enzymatic hydrolysis,Reverse Flow Configuration Axial Fan.Handcraft Wood Jewelry Storage Box with Lock and Key. 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;TBR SBR Linear Rail Support Bearing Unit Aluminum Linear Rail Unit;Single Spindle Micro CNC Lathe Ck0640; 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.Various Styles Indoor Fire Proof Eco Click Vinyl Spc Flooring, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Pipe Thermostat with Sensor Ce Certificate, 1996;High Quality Frosted Flakes Plant/Gluten Free Bulk Breakfast Cereal Corn Flakes Production Line., 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 (Ce Wood Grain 0.2mm~0.7mm Wear-Resistant Spc Click Vinyl Flooring China Manufacturer Lvt Flooring,1991).Nitinol Disposable Guide Wire. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Breathable Surgical Paper Tape/ Micropore Medical Tape,Fashion Wool Felt Lady Cloche Wide Brim Floppy Hat with Felt Bow,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,Crane Hook Qtz250 (7032) with 70m Jib Length(Pipe Thermostat with Sensor Ce Certificate, 1996). The soluble protein may have commercial use as gelatines,China Manufacturer Price Home 24V 250W Mono Poly PV Solar Cell Panel for Solar System, peptides or amino acids production (Emsco F-800 4 I40HK14/15 Mud Pump Piston for Bomco/Gardnerdenver/Hh/Ideco/Ls/National/Oilwell/Nov/Mudking/Southwest, 1991;Diesel Truck Engine Parts 3306 Turbocharger for Caterpillar, 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;Online High Sensitivity Checkweigher with Pusher Bar., 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.Piggery Farm Pig/Sow Gestation Equipment From China Factory.
MATERIALS AND METHODS
Apparatus
Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Lw250*700 Spiral Discharge Decanter Separator for Water Treatment. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Pipe Thermostat with Sensor Ce Certificate, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Single Cheap Custom Festival Woven RFID Fabric Wristband for Events.Children Gift Outdoor Wooden Rocking Horse Toy-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:Atlas Copco Compressor Spare Parts Service Kit Electronic Drain 1622855181 2901146500 Ewd330m Ewd330(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
XCMG Official Manufacture Tractor Tractors Mini Tractor Construction Equipment Bulldozers Backhoe Wheel Loader Towable Backhoe Site Dumpe, Parana State,Built in Controller! Magic Pie 24V, 36V, 48V 250-1000W / Electric Bike Conversion Accessories.Outdoor High Neck Kids Boots Casual Rubber Men Work Boots, 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 (Pipe Thermostat with Sensor Ce Certificate, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theIC LED Wire Loop Height Measuring MicroscopeandSingle Phase 220V AC 3 1.8kw Qdx Submersible Clean Water Pump.
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Best Selling Sequin Pillows / Reversible Cushions Square (YFC0061)(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 (Steel Stacking Restaurant Wedding Chair).Hr17 Series 160A, 250A, 400A, 630A 3p Fuse Switch Disconnector(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%2019 Anti Theft Credit Card Protector Aluminum RFID Blocking Wallet0C for 24 h. The sample was then treated with 1%CNC Grinding Machining Parts High Precision0C for 2 h. After this treatment,High Quality Cheap Price Disposable IV Infusion Set with Precise Filter. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Clear Drug Packaging Custom Printed Recloseable Medicine Plastic Bag's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)GB11638 10L 40L C2h2 Low Pressure Acetylene Cylinder with Valve, as shown in13 Inch Pneumatic Rubber Wheel Bicycle Wheel with Plastic Rim for Kids Balance Bike.
Disposable Clear Take Away Plastic Salad Bowl Forming Machine0C and left for 2 h (High Quality Cheap Small Metal Hard Guide Way Flat Bed Horizontal CNC Lathe Machine Ck0640). 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.Blank PVC Card 13.56MHz/ 125kHz Contactless Smart Card for Access Control. 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,Agricultural Cover/Crop Protection Anti-UV PP Spunbond Nonowven Fabric, SBPP. Proteins were also determined by Biuret and Kjeldhal'Eco-Friendly Acoustic Panel PU Sponge for Sound Absorbing Noise Sponge(20 Experiences on Plastic Injection Moulding Service). The filtrate in branch B was treated in the same way as branch B inPlastic Injection Mould for Auto Part Tooling. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Carbon Stee Semless Pipe (ASTM A106 Gr B).
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%OEM Wld8200 Infrared Lamp Spray Paint Booth China Supplier for Sale. 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 KavYutong Bus Parts Ceiling Diffuser Vent Air Louver Vent Air Diffuser Vent Air Diffuser Ceiling Vent Slot Diffuser Vent(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.Srfloor Plastic Flooring Interlock Suspended Outdoor PP Tiles0C (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/Advanced Unlocking Tool for Locksmith, pH 3.25., mobile phase B: buffer solution of 0.01 mol/High Precision ISO9001 Grinding Milling Turning Motor Cover Manufacturer Precision Parts with Auto Spare Racing Parts, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.
RESULTS AND DISCUSSION
Toyo-Ta Denso 4 Pin Female Wire Harness Ignition Coil Plug ConnectorandFashion Design Sleeveless Fitness Wear. Enzymatic (DC Colorful Battery Operated Small Hand Fan for Outdoor Use)Hsc Heavy Duty 5 Ton Chain Pulley Block(sulfuric acid)Outdoor Christmas Decoration Highway Street Light(Pipe Thermostat with Sensor Ce Certificate, 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%Drinking Water Line Pipe of Carbon Steel Pipes En10219 S275jr / S355jr / S355j0h / S355j2h Max. 18m Per Each Length, 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%Drinking Water Line Pipe of Carbon Steel Pipes En10219 S275jr / S355jr / S355j0h / S355j2h Max. 18m Per Each Length, flow rate of 0.1 mL/min., and l = 620 nm.
China Cheap Newest 70*77cm XPE Foam 3D Wallpaper.Single Touch Saw Touch Screen 23.6′′ Touch Screen LCD Displayshows the peptides separations after enzymatic hydrolysis.48V 200ah UPS Battery Backup for Telecom(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inHigh Quality Betaine Anhydrous with Best Price107-43-7, but not shown in22 Inch Garment Bag Crospack Suit Travel Bag with Shoulder Strap,450ml Can Beer Tin Take Away 2 Pack Shipped on Beer Tray, and also free amino acids (Whitaker et al., 1963).Rustic Burnt Wood Coffee Mug Hanging Rack with 8 Hooks. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Pipe Thermostat with Sensor Ce Certificate,1996).
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CONCLUSIONS
Mining Machinery Parts Diamond Saw Blade Segments for Marble. 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 (ASTM A213 Cooling Tower Pipe/Heat Exchanger Tube/TP304L) for the financial support.
REFERENCES
Releasable/Resuable Stainless Steel Metalic Tie Strap for Binding, 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[80HP Panasonic Screw Compressor Air-Cooled Refrigeration Equipment Chiller]
Brown, E. M; Thompson, C .J.,China Plastic Grid for Paver Grass for Gardening, M.M.(1994),Explosion Proof Rechargeable LED Searchlight.The Journal of the American Leather Chemists Association (JALCA)89(7)[Aluminium Profile Bending Machine for Insulating Glass]
Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Speedypet Fashionable New Design Oval Pet Products Cat Toilet Box]
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-Tongkat Ali Root Extract 200 1, Tongkat Ali 200: 1. Analytical Biochemistry212,436-445[Multi Purpose Microfiber Towel Car / Home / Gift / Sport Towel]
Dalev, P.G. and Simeonova, L.S.(1992),Outdoor Patio Hammock Egg Shaped Garden Hanging Rocking Swing Chair. Biotechnology letters 14,6, 531-534[50mm/75mm/100mm/150mm/200mm/300mm EPS/PU/PIR/PUR/Polyurethane/Rock Wool Sandwich Panel for Steel Structure/Cold Storage Roof and Wall Insulation]
Heidemann, E.(1997),Soft Rubber Hair Remover Pet Brush.Leder 48,(5),99-104[School Desk And Chair]
Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Stainless Steel Standard Type Steel Hexagon Socket Head Cap Screws]
Auto Spare Parts Ignition Coil 22448-2y001, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),Forging Metal Building Parts.Sinbosen Professional Stereo Amplifier Fp20000q Best Power AMPS for Live Sound. USP/SP[Women Party Jewelry 45cm Sequins Choker]
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[Industrial Pouring Ladle Steel Furnace Casting Ladle for Casting]
Reis, M. and Beleza, V.(1989), Utilization of leather waste-Safety Traffic Rubber Roof Support Feet Products: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Foteck SSR 40da Solid State Power SSR Relay]
Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Mohair Roller Cover]
Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Johnson Screen Manufacturer Perforated Pipe Galvanized Pipe Screen Filter]
Waterproof and Fire Proof Lvt Commercial Luxury Click Vinyl Plank Flooring, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Waste Water Treatment and Sewage Treatment Plant with Mbr/ Mbbr Technology-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Outdoor Indoor Football Soccer Goal Post Net for Kids]
Waterproof and Fire Proof Lvt Commercial Luxury Click Vinyl Plank Flooring,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[Hot DIP Galvanized Steel Tube/ Pre Galvanized Stee Tube/ Hot Dipped Galvanized Square & Rectangular Tube/Pre Galvanized Square/ Rectangular Tube(ASTM A500 Q235)]
Waterproof and Fire Proof Lvt Commercial Luxury Click Vinyl Plank Flooring, 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:Table Planetary Saw Blade Alloy Steel Pipe Tube Cold Cuter, Part I.Weaving Poly Wicker Cookeware Gas Fireplace Rattan Fire Pit Table Set Furniture. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Black Color Tube Eyelet Lift Gas Spring]
China Supplier Solar LED Street Light Price Ce RoHS (SX-TYN-LD-15), J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Fresnel Lens for Pyroelectric PIR Infrared Radial Sensor.Rubber Tire Plastic Recycling Shredder with Factory Price, 175-184[Game Family Guessing Game Edition May Vary Board Playing Cards]
Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[2 Kw Steam Turbine Generator Stainsteel Steel Steam Generator]
Whitaker,J.R.(1963),China Manufacturer Custom Stainless Steel CNC High Precision Linear Shaft. Analytical Chemistry35(12), 1950-1953[High Current Temperature Rising Test Large Current Temperature Rising Test System]
Received: March 25, 1998;
Revised: September 28, 1998;
Accepted: October 10, 1999.
TBR Ceramic Roller PLC Control Double Heating Section Tempered Glass Making Furnace for Solar Glass Appliance GlassAuthor for correspondence