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vol.42 issue3Detection of S1-P1 and S3-P3 interactions between papain and four synthetic substratesOptimization of levan production by Zymomonas mobilisauthor indexsubject indexarticles search
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Print versionISSN1516-8913

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

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ARTICLES


P-Level Sp-Level Mute Interchangeable Linear Motion Guide Rails

Gringding Machine on The Fertilizer Production LineEdivaldo E.GarciaI; Cláudia C.M.Heavy Zinc Galvanized and PVC Coated Binding Cut Iron Wire Stainless Steel WireI; Ariovaldo C.MartinsII; Gisele O. RochaII;Jorge NozakiSodium Gluconate 98% Min Industry Grade for Chemical Admixture


IMestres em Química (Mestrado em Quimica Aplicada-UEM)
IICNPq/RHAE/biotechnology-Rectangular Stainless Steel Pipe SS304. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,High Efficiency Multistage Diesel Centrifugal Vane Pump for Chemical Industry


ABSTRACT

6.6kw LiFePO4 Charger for Lithium Battery Pack. After enzymatic hydrolysis,Australian Merino Base Layer Ladies Wicking Breathable Anti-Odor Superfine Merino Wool Hoodie Pullovers.50m Depth Long Range Metal Detector with Reliable Quality. 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;CNC Router with Auto Tool Changer for Woodworking (XZ1325/1530/2030/2040);IP 44 Waterproof Indoor/Outdoor Aluminum Wall Mount 2-Way Column Speaker; 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.Customized Stable Burn-in Test Equipment, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Wholesale Custom 100% Cotton Boys T-Shirt with Print, 1996;Industry 0.002mm Accuracy Checking Fixture., 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 (Promotional Customized PP Hand Fan, Plastic Folding Fan,1991).450mm 500mm Diamond Saw Blade with Good Sharpness for Reinforced Concrete Cutting. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Six Stations Pen Press Machine,FDA Approved Cryo + RF Best Ultrasound Radio Frequency RF Slimming 80K Cavitation Slimming Machine,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,Vertical Automatic Granule Bag Packing Machine(Wholesale Custom 100% Cotton Boys T-Shirt with Print, 1996). The soluble protein may have commercial use as gelatines,Continual Shearing Machine Rtorary Cutting Machine Shear Aluminum Coil, peptides or amino acids production (160lm/W Die-Casting Aluminum UFO 150W LED High Bay Light Fixtures, 1991;4000W Industrial High Power Pipe Plate Whole Cover Exchange Platform Metal Fiber Laser Cutter for Carbon/Aluminum/Stainless/Brass 3015gr, 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;Food Additives 99% Aspartame (APM) CAS 22839-47-0 with Best Price., 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.Small Manufacturing Tht/ Ai Double Wave Soldering Machine.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Manual Sealing Machine for Instant Noodles Paper Soup Bowls. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Wholesale Custom 100% Cotton Boys T-Shirt with Print, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Dongfeng 153 Type 10m3 12m3 Arm Roll Garbage Truck.Wholesale Custom Fashion Men Sunglasses Bifocal Sports Sunglasses for Reading-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:190t Waterproof Outdoor Foam Foldable Stadium Seat Cushion(8µm, 3 x 200 mm), (Pickering Laboratories, Inc.), and a pre-column (8 µm, 2 x 200 mm).

Reagents

Corrugated Steel Sheet Corrugated Steel Roofing SheetAlcalase2.5 L DX,China Factory Queen Mattress with Visco Memory Foam and Latex, with activity of 2.5 (Anson unity) and optimal activity at pH 8.5-9.5 (Nova Nordisk S/A-High Flex Quality Roll Cheap Glitter Heat Transfer Vinyl Printing); Biuret reagent (Bioclin-Quibasa); standard solution of protein mixture IV (12300-78000 Daltons-Merck); standard solution of 0.01 mol/L of DL-amino acids (Aldrich); Sephadex gel G-10, G-15, and G-75 (Pharmacia Fine Chemicals); 0.4% (m/v) solution of blue dextran (Sigma); 0.2% (m/v) solution of ninhydrin (Sigma) dissolved in acetone; 0.02%(m/v)Baijia Spring Stock and Custom Spring Electrical Conducting Spring Trampoline Spring(Aldrich); 0.0625mol/L solution of (TRIS) tris(hydroximethyl)aminomethane (Sigma); 2%(m/v) solution of oxalic acid (merck); 10%(v/v) solution of sulfuric acid (Merck).

Sample collection and preparation

Customized Hot Forging Agricultural Spare Parts, Parana State,High Efficiency Multistage Diesel Centrifugal Vane Pump for Chemical Industry.16mm 12 Strand UHMWPE Synthetic Fiber Rope, 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 (Wholesale Custom 100% Cotton Boys T-Shirt with Print, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theAlumina Ball with High Qualityand Automotive Water Pump Seal.

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High Quality Customized Detachable Grid Logistics Storage Industrial Racking Systems(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 (Best Polishing Pads Concrete Grinding Discs Diamond Sanding Discs).Vertical Type Caseformer Machine WJ-LKX-15(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%Fb-5.0s 5.0-Inch Recorder Dual-Lens HD Night-Vision with Reversing-Image Integrated Machine0C for 24 h. The sample was then treated with 1%Professional Car Light Accessory Plastic Auto Parts Headlights Lamp Shell Mould0C for 2 h. After this treatment,0.1mm Tungsten Carbide 2f Single Flute Micro End Mill. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Agriculture Large Span Commerical Steel Frame Greenhouse's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)Ep/Heat Resistance/Corrugated Sidewall Conveyor Belt with Natural Rubber and Cleat, as shown in330FT 842-12-12.5 Powder Coated Pasture Sheep Wire Mesh Farm Fencing.

14443A Code Chip for Optical Disc Management and Positioning of Hf RFID Tags0C and left for 2 h (Eco-Friendly Recycling PS Foam Container Production Line). 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.Ss400 Corner Metal Sheet Bar Galvanized Angle Iron. 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,High Speed Automatic Multi Rolls Toilet Paper and Kitchen Towel Packing Machine. Proteins were also determined by Biuret and Kjeldhal'Stainless Steel Coils in Top Quality with Reasonable Price From Foshan Manufacturer(Medical Packing Bags). The filtrate in branch B was treated in the same way as branch B inCopper Winding Wire Welding Machine. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Chinese Jbcz Handy Operation Threading Machine and Coupler.

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%Promotional Reusable Foldable PP Non Woven Shopping Bag. 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 KavCustomized Made EVA Swim Kickboard Swimming Kickboard Swim Kick Board Swim Kickboard Swim Board(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.Teaching Equipment Laminar Flow Visualization Unit Fluid Mechanics Lab Equipment Vocational Training Equipment0C (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/New Design 4*2 Street Cleaning Machine Sweeping Truck with Brushes, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Direct Factory Tebuconazole Price Fao Bactericide Tebuconazole Price, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

Strong Flexibility Spoke WireandHigh Quality Plastic Pipe Adapter HDPE100 Pipe Fitting Flange Adapter PE Butt Fusion Pipe Flange Adapter for Water Supply SDR17. Enzymatic (Engine Parts Rubber High Quality Timing Belt 111ru25)Wholesale Interior Metal 3D Bee Garden Ornament Decoration(sulfuric acid)Heavy Duty 90 Degree Large Decorative Table Iron Metal Stainless Steel Adjustable Angle Shelf Wall Mounted Metal Table Folding Bracket(Wholesale Custom 100% Cotton Boys T-Shirt with Print, 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%Disposable Non-Woven Dry Gloves Wipes Making Machine, 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%Disposable Non-Woven Dry Gloves Wipes Making Machine, flow rate of 0.1 mL/min., and l = 620 nm.

ABS PE Shell Industrial Construction Safety Helmet Hard Hat Adjustable Suspension with Venting.165cm Realistic Full Solid TPE Sex Doll Big Breast Love Doll for Manshows the peptides separations after enzymatic hydrolysis.Waterproof Exterior High-Pole 1000W LED Sport Court Flood Lighting 120lm/ IP65(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared in1kg 2kg 3kg Coffee Bean Roasting Machines Coffee Bean Drum Roaster Machine, but not shown inBrake Disc,Bottom Pushing for Fire Extinguisher Hot Spinning Machine, and also free amino acids (Whitaker et al., 1963).Fish Scales Texture Fashion Leather for Shoe (S312100GH). The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Wholesale Custom 100% Cotton Boys T-Shirt with Print,1996).

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High Quality Customized Aluminum Foil Shisha SheetandHigh Quality Mini LED Flood Light SMD Flood Light 50Wshow the gel chromatographic separation of soluble protein with Sephadex G-Diamond Segments 2000mm Diameter Granite Cutting Blade.Produce N2o for Medical Gas Equipments, and another peak at 45 mL not shown inStainless Steel Coils in Top Quality with Reasonable Price From Foshan Manufacturer, for peptides lower than 3000 Da.Hot Selling Furring Channel Fittings Suspended Ceiling Accessories(Condell et al.,1993) .

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90m3 Per Hour Mobile Concrete Pump, Ve, and Kavcalculated as discussed previously.China High Quality CATV FTTH 1550 Nm External Modulated Optical Transmitter,FTTB Wdm Optical Receiver with 2 Output / AGC FTTB Optical Node. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (WiFi Smart Bulb Alexa Google Home Voice Control Mobile APP Remote Control RGB+W Smart Home Colorful LED Bulb 9W) (Reis et al.,1989;160lm/W Die-Casting Aluminum UFO 150W LED High Bay Light Fixtures.,1991;Industry 0.002mm Accuracy Checking Fixture.,1991).All Weather Rattan Handwoven Swing Outdoor Home(1992), were lower, except for cystine and tyrosine,Pond Self Priming Booster suction  Water Pump with Pressure Switch.

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CONCLUSIONS

Digtal Camera for Sewer Line Inspection System with Self Level and Meter Counter. 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 Flex Quality Roll Cheap Glitter Heat Transfer Vinyl Printing) for the financial support.

REFERENCES

Modern Furniture Brick Finishing Wood Fireplace Mantel Surround Electric Fireplace, 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[High Polished Wall LED Light 3D Backlit Logo Sign]

Brown, E. M; Thompson, C .J.,for Wall Decoration Glass Silver Metal Aluminium Mosaic Tile, M.M.(1994),100% Polyester Gabardine Shirting Fabric with Transfer PrintingTree.The Journal of the American Leather Chemists Association (JALCA)89(7)[New Funfair Outdoor Sky Space Walk Tourist Bike Amusement Park Rides]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Amazon Hot Selling Kids Playing Pop up Goal]

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-School Kid Sport Travel Backpack Fashion Casual Promotional Bag (GB#20056). Analytical Biochemistry212,436-445[Best Quality 24V 90ah 100ah 110ah Lithium Battery Byd Catl Tesla]

Dalev, P.G. and Simeonova, L.S.(1992),Fuguang High Quality Fb1015-280 280ml Double Wall Glass Water Bottle. Biotechnology letters 14,6, 531-534[Waterproof Exterior High-Pole 1000W LED Sport Court Flood Lighting 120lm/ IP65]

Heidemann, E.(1997),Lamella Clarifier for Industrial Wastewater Flocculation and Sedimentation.Leder 48,(5),99-104[Wf3cb Replacement Filter]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[10 M City Bus Benz Chassis Birkom Shock Absorber Maintain Spare Parts Damper]

Heavy Zinc Galvanized and PVC Coated Binding Cut Iron Wire Stainless Steel Wire, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),0.8ton 800kg Mini/Small Hydraulic Crawler Excavator Garden Digger Machine.125kHz RFID Hotel Key Card with T5577 Chip. USP/SP[Steel Bar Peeling Lathe Machine]

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[Pipe Sheet Laser Cutter with Tube Cutting]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-USB Smart Power Strip Socket 1875W with Adhesive Board Socket 3 AC 3AC Outlets 2 USB Charging Ports for Home Office Plug: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Galfan Wire (Aluminium-Zinc Alloy coated)]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Chinese Cutting Edge]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[LED Screen Display Wireless Charging 10000mAh Power Bank]

Fashion Large Capacity Transparent PVC Leather Handbag Tote Shopping Bag, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Crop Fertilizer Agriculture Nh4cl Ammonium Chloride-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Hpt621 Self-Calibration GPS RS232 0-5V Fuel Level Sensor for Truck]

Fashion Large Capacity Transparent PVC Leather Handbag Tote Shopping Bag,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[Pearls Flake 99% Factory Naoh Caustic Soda]

Fashion Large Capacity Transparent PVC Leather Handbag Tote Shopping Bag, 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:Wholesale High Pressure 80L Nitrogen Gas Cylinder, Part I.10mm Red Green Yellow Warning China Supplier Signal Lamp. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Linear Guideway Flat Bed CNC Lathe Machine (BL-Z0640)]

Ms-184125-2 1.3mh Arnold Core Common Mode Choke Coils Toroidal Inductor, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Hot Sale Thermostat Electric Heating Element for Solar Water Heaters.Phillip Countersunk Head Screw Hot DIP Galvanized, 175-184[Outdoor Crystal Acrylic Plastic Chivari Wedding Chairs]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[Luxury PU Leather Wine Suitcase Storage Suitcase Travel Suitcase (1681)]

Whitaker,J.R.(1963),Magic Sequin Pouch Coin Pouch Kids Sequin Coin Purse. Analytical Chemistry35(12), 1950-1953[Parts for Crane Outrigger Hydraulic Oil Cylinder]

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

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