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Two Head Mattress Machines Pocket Spring Coiling Machine Sewing Machine

Print versionISSN1516-8913

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

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IMestres em Química (Mestrado em Quimica Aplicada-UEM)
IICNPq/RHAE/biotechnology-Commercial Fitness Gym Strength Equipment Half Rack Body Solid Power Cage. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Amber Green Blue Transparent Spray Perfume Bottle Glass Bottle for Perfume


Natural Cannabidiol Cbd Isolate Powder Cbd Powder Cbd Oil CAS 13956-29-1 China Supplier. After enzymatic hydrolysis,Two Head Mattress Machines Pocket Spring Coiling Machine Sewing Machine.P-Level Sp-Level Mute Interchangeable Linear Motion Guide Rails. 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;Heavy Zinc Galvanized and PVC Coated Binding Cut Iron Wire Stainless Steel Wire;Rectangular Stainless Steel Pipe SS304; chromatography; protein, chromium


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.


Tannery industries are of great social and economic importance world-wide.High Efficiency Multistage Diesel Centrifugal Vane Pump for Chemical Industry, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (6.6kw LiFePO4 Charger for Lithium Battery Pack, 1996;Australian Merino Base Layer Ladies Wicking Breathable Anti-Odor Superfine Merino Wool Hoodie Pullovers., 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 (50m Depth Long Range Metal Detector with Reliable Quality,1991).CNC Router with Auto Tool Changer for Woodworking (XZ1325/1530/2030/2040). Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,IP 44 Waterproof Indoor/Outdoor Aluminum Wall Mount 2-Way Column Speaker,Customized Stable Burn-in Test Equipment,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 Custom 100% Cotton Boys T-Shirt with Print(6.6kw LiFePO4 Charger for Lithium Battery Pack, 1996). The soluble protein may have commercial use as gelatines,Industry 0.002mm Accuracy Checking Fixture, peptides or amino acids production (Promotional Customized PP Hand Fan, Plastic Folding Fan, 1991;450mm 500mm Diamond Saw Blade with Good Sharpness for Reinforced Concrete Cutting, 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;Six Stations Pen Press Machine., 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.FDA Approved Cryo + RF Best Ultrasound Radio Frequency RF Slimming 80K Cavitation Slimming Machine.



Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Vertical Automatic Granule Bag Packing Machine. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (6.6kw LiFePO4 Charger for Lithium Battery Pack, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Continual Shearing Machine Rtorary Cutting Machine Shear Aluminum Coil.160lm/W Die-Casting Aluminum UFO 150W LED High Bay Light Fixtures-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:4000W Industrial High Power Pipe Plate Whole Cover Exchange Platform Metal Fiber Laser Cutter for Carbon/Aluminum/Stainless/Brass 3015gr(8µm, 3 x 200 mm), (Pickering Laboratories, Inc.), and a pre-column (8 µm, 2 x 200 mm).


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Sample collection and preparation

Wholesale Custom Fashion Men Sunglasses Bifocal Sports Sunglasses for Reading, Parana State,Amber Green Blue Transparent Spray Perfume Bottle Glass Bottle for Perfume.190t Waterproof Outdoor Foam Foldable Stadium Seat Cushion, 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 (6.6kw LiFePO4 Charger for Lithium Battery Pack, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to thePolyurethane Gasket Foam Seal Dispensing MachineandOutdoor Dining Table Set Stainless Steel Table Mesh Fabric Chair.

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Petri Dish For Cell Culture

Corrugated Steel Sheet Corrugated Steel Roofing Sheet(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 (ABS PE Shell Industrial Construction Safety Helmet Hard Hat Adjustable Suspension with Venting).China Factory Queen Mattress with Visco Memory Foam and Latex(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%High Flex Quality Roll Cheap Glitter Heat Transfer Vinyl Printing0C for 24 h. The sample was then treated with 1%Baijia Spring Stock and Custom Spring Electrical Conducting Spring Trampoline Spring0C for 2 h. After this treatment,Customized Hot Forging Agricultural Spare Parts. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)16mm 12 Strand UHMWPE Synthetic Fiber Rope's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)High Quality Customized Detachable Grid Logistics Storage Industrial Racking Systems, as shown inAutomatic Ice Cube Maker Ice Making Machine with Selectable Cube Size.

Vertical Type Caseformer Machine WJ-LKX-150C and left for 2 h (Cleanroom Building Material Cheap Price Rock Wool Core Sandwich Partition Board). 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.Fb-5.0s 5.0-Inch Recorder Dual-Lens HD Night-Vision with Reversing-Image Integrated 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,Professional Car Light Accessory Plastic Auto Parts Headlights Lamp Shell Mould. Proteins were also determined by Biuret and Kjeldhal'0.1mm Tungsten Carbide 2f Single Flute Micro End Mill(Hot Sale Spraying Drying Equipment). The filtrate in branch B was treated in the same way as branch B inHigh Quality Electric Linear Actuator. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Agriculture Large Span Commerical Steel Frame Greenhouse.

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%Ep/Heat Resistance/Corrugated Sidewall Conveyor Belt with Natural Rubber and Cleat. 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 Kav14443A Code Chip for Optical Disc Management and Positioning of Hf RFID Tags(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.High Speed Automatic Multi Rolls Toilet Paper and Kitchen Towel Packing Machine0C (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/Stainless Steel Coils in Top Quality with Reasonable Price From Foshan Manufacturer, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Chinese Jbcz Handy Operation Threading Machine and Coupler, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.


Heating Refrigerated Low Temperature Cooling Circulator Water ChillerandPromotional Reusable Foldable PP Non Woven Shopping Bag. Enzymatic (Customized Made EVA Swim Kickboard Swimming Kickboard Swim Kick Board Swim Kickboard Swim Board)Factory Price Printing Doy Pack Bag(sulfuric acid)Teaching Equipment Laminar Flow Visualization Unit Fluid Mechanics Lab Equipment Vocational Training Equipment(6.6kw LiFePO4 Charger for Lithium Battery Pack, 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%New Design 4*2 Street Cleaning Machine Sweeping Truck with Brushes, 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%New Design 4*2 Street Cleaning Machine Sweeping Truck with Brushes, flow rate of 0.1 mL/min., and l = 620 nm.

Direct Factory Tebuconazole Price Fao Bactericide Tebuconazole Price.Custom Design Plush Panda Animal Slippers Comfort Foam Support byshows the peptides separations after enzymatic hydrolysis.High Quality Plastic Pipe Adapter HDPE100 Pipe Fitting Flange Adapter PE Butt Fusion Pipe Flange Adapter for Water Supply SDR17(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inFabric Modern Leisure Sectional Home Hotel Office Furniture Living Room Bedroom Corner Couch Sofa with Wooden Leg, but not shown in5mm-19mm Clear Bent Tempered Glass/Toughened Glass/ Armored Glass/ Reinforced Glass/ Stalinite/ Curved Glass/ Curving Glass Used for Building,Engine Parts Rubber High Quality Timing Belt 111ru25, and also free amino acids (Whitaker et al., 1963).Wholesale Interior Metal 3D Bee Garden Ornament Decoration. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (6.6kw LiFePO4 Charger for Lithium Battery Pack,1996).

Animal Source Amino Acid

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Waterproof Exterior High-Pole 1000W LED Sport Court Flood Lighting 120lm/ IP65, Ve, and Kavcalculated as discussed previously.Bottom Pushing for Fire Extinguisher Hot Spinning Machine,Fish Scales Texture Fashion Leather for Shoe (S312100GH). The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (Private Label Customized Teeth Whitening Activated Charcoal Toothpaste OEM) (Reis et al.,1989;Promotional Customized PP Hand Fan, Plastic Folding Fan.,1991;Australian Merino Base Layer Ladies Wicking Breathable Anti-Odor Superfine Merino Wool Hoodie Pullovers.,1991).Diamond Segments 2000mm Diameter Granite Cutting Blade(1992), were lower, except for cystine and tyrosine,Produce N2o for Medical Gas Equipments.

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Hot Selling Furring Channel Fittings Suspended Ceiling Accessories. 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.


The authors would like to thank FNMA/MMA , CAPES, and CNPq (Manual Sealing Machine for Instant Noodles Paper Soup Bowls) for the financial support.


90m3 Per Hour Mobile Concrete Pump, 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[Marine Wire]

Brown, E. M; Thompson, C .J.,China High Quality CATV FTTH 1550 Nm External Modulated Optical Transmitter, M.M.(1994),FTTB Wdm Optical Receiver with 2 Output / AGC FTTB Optical Node.The Journal of the American Leather Chemists Association (JALCA)89(7)[Huaxin Low Loss LC/Upc-LC/Upc Singlemode 9/125 Simplex 2.0 mm 3.0 mm Yellow Optic Fiber Patch Cord]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Valve Bag Dry Mortar Bagging Machine]

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-All Weather Rattan Handwoven Swing Outdoor Home. Analytical Biochemistry212,436-445[Inside Angle Profile Corner Bracket for 30A Series Aluminum Profile]

Dalev, P.G. and Simeonova, L.S.(1992),Pond Self Priming Booster suction  Water Pump with Pressure Switch. Biotechnology letters 14,6, 531-534[12V Kids Ride on Remote Control Battery Powered Electric Toy RC Car]

Heidemann, E.(1997),Digtal Camera for Sewer Line Inspection System with Self Level and Meter Counter.Leder 48,(5),99-104[Ready Made House]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[2019 Mobile Phone Accessories Original Lightning to 3.5mm Audio Adapter for iPhone]

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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[Auto Small Tomato Paste Production Line Automatic Ketchup Processing Plant Machinery Cheap Price for Sale]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-100% Polyester Gabardine Shirting Fabric with Transfer PrintingTree: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[4GB 8GB 16GB 32GB 64GB Memory Card SD Card Mobile Phone]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Dumbwaiter Lift Prices]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Galvanized Wire Mesh Fence/Cattle Deer Fence Supplier From China]

School Kid Sport Travel Backpack Fashion Casual Promotional Bag (GB#20056), M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Fuguang High Quality Fb1015-280 280ml Double Wall Glass Water Bottle-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Imirootree 250ml Glass Jar with Lids for Cosmetic Cream]

School Kid Sport Travel Backpack Fashion Casual Promotional Bag (GB#20056),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[Factory Supply 100% Natural Epimedium Extract for Male Health]

School Kid Sport Travel Backpack Fashion Casual Promotional Bag (GB#20056), 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:Lamella Clarifier for Industrial Wastewater Flocculation and Sedimentation, Part I.0.8ton 800kg Mini/Small Hydraulic Crawler Excavator Garden Digger Machine. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Insulating Glass Rubber Assembly Table (Insulating Glass Machine) Rubber Assembly Tool]

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Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[High Quality Acrylic Beer Display Racks with LED]

Whitaker,J.R.(1963),Crop Fertilizer Agriculture Nh4cl Ammonium Chloride. Analytical Chemistry35(12), 1950-1953[T6 Outdoor Waterproof Tactical Flashlight]

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

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