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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-Factory Price Printing Doy Pack Bag. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Teaching Equipment Laminar Flow Visualization Unit Fluid Mechanics Lab Equipment Vocational Training Equipment


ABSTRACT

New Design 4*2 Street Cleaning Machine Sweeping Truck with Brushes. After enzymatic hydrolysis,Direct Factory Tebuconazole Price Fao Bactericide Tebuconazole Price.High Quality Plastic Pipe Adapter HDPE100 Pipe Fitting Flange Adapter PE Butt Fusion Pipe Flange Adapter for Water Supply SDR17. 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;Engine Parts Rubber High Quality Timing Belt 111ru25;Wholesale Interior Metal 3D Bee Garden Ornament Decoration; 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.Heavy Duty 90 Degree Large Decorative Table Iron Metal Stainless Steel Adjustable Angle Shelf Wall Mounted Metal Table Folding Bracket, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Disposable Non-Woven Dry Gloves Wipes Making Machine, 1996;ABS PE Shell Industrial Construction Safety Helmet Hard Hat Adjustable Suspension with Venting., 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 (Waterproof Exterior High-Pole 1000W LED Sport Court Flood Lighting 120lm/ IP65,1991).Bottom Pushing for Fire Extinguisher Hot Spinning Machine. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Fish Scales Texture Fashion Leather for Shoe (S312100GH),Diamond Segments 2000mm Diameter Granite Cutting Blade,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,Produce N2o for Medical Gas Equipments(Disposable Non-Woven Dry Gloves Wipes Making Machine, 1996). The soluble protein may have commercial use as gelatines,Hot Selling Furring Channel Fittings Suspended Ceiling Accessories, peptides or amino acids production (90m3 Per Hour Mobile Concrete Pump, 1991;China High Quality CATV FTTH 1550 Nm External Modulated Optical Transmitter, 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;FTTB Wdm Optical Receiver with 2 Output / AGC FTTB Optical Node., 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.All Weather Rattan Handwoven Swing Outdoor Home.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Pond Self Priming Booster suction  Water Pump with Pressure Switch. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Disposable Non-Woven Dry Gloves Wipes Making Machine, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Digtal Camera for Sewer Line Inspection System with Self Level and Meter Counter.Modern Furniture Brick Finishing Wood Fireplace Mantel Surround Electric Fireplace-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:for Wall Decoration Glass Silver Metal Aluminium Mosaic Tile(8µm, 3 x 200 mm), (Pickering Laboratories, Inc.), and a pre-column (8 µm, 2 x 200 mm).

Reagents

100% Polyester Gabardine Shirting Fabric with Transfer PrintingTreeAlcalase2.5 L DX,School Kid Sport Travel Backpack Fashion Casual Promotional Bag (GB#20056), with activity of 2.5 (Anson unity) and optimal activity at pH 8.5-9.5 (Nova Nordisk S/A-Fuguang High Quality Fb1015-280 280ml Double Wall Glass Water Bottle); 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)Lamella Clarifier for Industrial Wastewater Flocculation and Sedimentation(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

0.8ton 800kg Mini/Small Hydraulic Crawler Excavator Garden Digger Machine, Parana State,Teaching Equipment Laminar Flow Visualization Unit Fluid Mechanics Lab Equipment Vocational Training Equipment.125kHz RFID Hotel Key Card with T5577 Chip, 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 (Disposable Non-Woven Dry Gloves Wipes Making Machine, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theCustom ABS Printing Rapid Prototype 3D Printing Parts SLA SLS 3D Printing ServiceandRigid Click Plank PVC Spc Vinyl Flooring Plank with IXPE Padding.

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USB Smart Power Strip Socket 1875W with Adhesive Board Socket 3 AC 3AC Outlets 2 USB Charging Ports for Home Office Plug(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 (Portable Electric Concrete Vibrator with 18000 High Rotation Speed).Fashion Large Capacity Transparent PVC Leather Handbag Tote Shopping Bag(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%Crop Fertilizer Agriculture Nh4cl Ammonium Chloride0C for 24 h. The sample was then treated with 1%Wholesale High Pressure 80L Nitrogen Gas Cylinder0C for 2 h. After this treatment,10mm Red Green Yellow Warning China Supplier Signal Lamp. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Ms-184125-2 1.3mh Arnold Core Common Mode Choke Coils Toroidal Inductor's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)Hot Sale Thermostat Electric Heating Element for Solar Water Heaters, as shown inReflective Aluminum Foil Fiberglass Cloth Tape (flame retardant).

Phillip Countersunk Head Screw Hot DIP Galvanized0C and left for 2 h (China Supplier Rubber Injection Molding Machine with Ce). 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.Magic Sequin Pouch Coin Pouch Kids Sequin Coin Purse. 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,Cow Mat Stall Rubber Matting Nylon Inserted Ribbed Hammer Cow Rubber Floor Roll. Proteins were also determined by Biuret and Kjeldhal'Heat Shrink Automatic Flow Wrapping Packing Machine(Custom High Precision Micro Machining Service Brass Micromachining Parts). The filtrate in branch B was treated in the same way as branch B inBathroom Lacquer Vanity Cabinet Manufacturers Cheap Price. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Guided Wave Radar Liquid Level Sensor Unaffected by Steam and Foam.

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%Ductile Iron Standard Brackets Pipe Hanger. 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 KavLuxury Vintage Throw Pillows Cover for Couch, Damask Pillows Cover, Decorative Pillow Covers(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 - 5.5.5mm-19mm Clear Bent Tempered Glass/Toughened Glass/ Armored Glass/ Reinforced Glass/ Stalinite/ Curved Glass/ Curving Glass Used for Building0C (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/High Quality Sheet Metal Bending Roll Forming Machine, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Different Size Glass Test Tubes, High Quality Laboratory Test Tubes, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

Custom Velvet Gift Jewelry Packaging Pouch with Plastic Lock CloseandProfessional Ultrasonic Skin Scrubber Skin Cleansing Radio Frequency Facial Bio Lifting Face Comedo Suction Beauty Machine. Enzymatic (Frame Type Rubber Hydraulic Press Machine)Kitchen Metal Dish Storage Rack (JP-SC984C)(sulfuric acid)0.45mm Transparent Rigid Pet Sheet Roll for Vacuum Forming(Disposable Non-Woven Dry Gloves Wipes Making Machine, 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%AVR Se350 Automatic Voltage Regulator for Marathon Alternator, 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%AVR Se350 Automatic Voltage Regulator for Marathon Alternator, flow rate of 0.1 mL/min., and l = 620 nm.

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CONCLUSIONS

Cross Belt Magnetic Separator Super Strong Neodymium Permanent Magnet to Remove Iron Scrap. 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 (Fuguang High Quality Fb1015-280 280ml Double Wall Glass Water Bottle) for the financial support.

REFERENCES

Paper Straw White Custom Panama Chapeau Men′s Sombrero Fedora Hat with Ribbon, 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[China Ipl Acne Treatment]

Brown, E. M; Thompson, C .J.,High Quality Ceramic Chrome Hybrid Bearing Oil, M.M.(1994),Medical Product Nonwoven Disposable Surgical Gown PP Isolation Gown.The Journal of the American Leather Chemists Association (JALCA)89(7)[Low Frequency 3000W 24V 230V Inverter with Battery Charger]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Ss400 Galvanized Steel C Channel Steel Price]

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-CAS No: 1317-80-2 Anatase Rutile TiO2 Titanium Dioxide Powder. Analytical Biochemistry212,436-445[School Kid Sport Travel Backpack Fashion Casual Promotional Bag (GB#20056)]

Dalev, P.G. and Simeonova, L.S.(1992),Digger Arm Small Wheel Loader (HQ908) with CE. Biotechnology letters 14,6, 531-534[H. 265 2.0megapixel 4X Zoom (2.8-12mm) IP IR Waterproof Camera]

Heidemann, E.(1997),15ml 18ml Glass Fish Model Perfume Bottle with Plastic Sprayer.Leder 48,(5),99-104[Visual Coating Machine]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Bosch Fuel Injector for Weichai Cummins Komatsu Engine 0445120123 Vg1038080007 Vg1560080276 095000-8011]

Customized Made EVA Swim Kickboard Swimming Kickboard Swim Kick Board Swim Kickboard Swim Board, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),Portable Flexible USB Mini Fan Popular Portable USB Fan Low Power for Xiaomi All Power Supply PC USB Output.Water Based Emulsion Paint Production Line. USP/SP[New Mobile Smartphone for Xiaomi 9 PRO]

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[Chuke 20W Optical Fiber Laser Marking Machine Printer Engraver]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-Cnm Single Strand Anchor Coupler: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[IP 44 Waterproof Indoor/Outdoor Aluminum Wall Mount 2-Way Column Speaker]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Imee Print Customized Printing Loose-Leaf Notebook Llnb35]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[I9s Tws Wireless Earphone Portable Bluetooth Headset Earbud]

Wisdom LED Floor Lamp, Head Lamp Fabia Mining Lamp, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),18X16mesh Fiberglass Window Screen Insect Screen-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[450mm 500mm Diamond Saw Blade with Good Sharpness for Reinforced Concrete Cutting]

Wisdom LED Floor Lamp, Head Lamp Fabia Mining Lamp,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[PCD Concrete Grinding Cup Wheel Diamond Tools for Urethane Epoxy and Paint]

Wisdom LED Floor Lamp, Head Lamp Fabia Mining Lamp, 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:Newest Ultra-Long Standby Waterproof Waistband Smart Bracelet with Blood Pressure Heart Rate Monitor and Sport Supervise for for Men and Woman Watch, Part I.Sterile Dsiposable Syringe for Dental 12ml. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[PVC Shrink Sleeve Label for Drinking Water Bottle]

Foldable Bed Military Cot for Camping, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),P5 960*960mm LED Display Screen SMD Indoor /Outdoor.2019 New Advertising Inflatables Air Walking Backpack Ball, 175-184[Sj-G Double-Layer Co-Extrusion with Rotary Machine-Head]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[750W 8X16 Precision Mini Metal Lathe 3 Jaw 50-2500rpm]

Whitaker,J.R.(1963),Side Pack Manual Gas Engine Power Brush Cutter. Analytical Chemistry35(12), 1950-1953[Sanitary Stainless Steel Heating Cooling Mixing Buffer Storage Tank]

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

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