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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-AISI 430 Ba/2b Embossed Stainless Steel Sheet. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,High Quality 33kv 6.3kv 1000 kVA 50% Copper and 50% Aluminum Material Distribution Transformer Made in China


ABSTRACT

Drug Delivery ABS Hospital Medical Treatment Medicine Cart. After enzymatic hydrolysis,YCOM 1in 2 out HDMI Splitter 4K X 2K for 3D Black.Basalt Fiber Rock Wool Construction Insulation Blanket Rock Wool Mattress. 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.

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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.IPL Hair Removal Skin Rejuvenation Beauty Machine (IPL+E-light Function HS-650), about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Tilt-and-Turn-with-Hidden-Hinge, 1996;Automatic Soft PVC Granule Used for Refrigerator Door Gasket., 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 (0.45um Dia 47mm PVDF Filter Membrane,1991).Commecial Use Watch Display Cabinet for Watch Store Interior Design. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Tunnel Boring Machine Spare Parts Tbm Disc Cutter Ring,Slotted Round Head Aluminum Self Tapping Screw,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,Queene/Folding Electric Bicycle with Fat 20 Inch Tire 500W 48V Bafang Motor Ebike(Tilt-and-Turn-with-Hidden-Hinge, 1996). The soluble protein may have commercial use as gelatines,Classic Black Color Commercial Glass Door Multi Deck Refrigerator, peptides or amino acids production (MB-Z500 5-8t/H Automatic Wood Peeler/Industrial Wood Peeler/Log Debarker, 1991;Hotbar Reflow Machine for FPC of Camera, 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;Full Viton Coated Half Shaft Wafer Butterfly Valve., 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.Claus Process Catalyst 4-6 mm.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-4 Different Ball Silicone Ice Cube Maker. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Tilt-and-Turn-with-Hidden-Hinge, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10High Quality Washable Durable Hotel Polyester Banquet Table Cloths.16A 32 AMP 3 Pin Plug 220-240V Industrial Plug and Socket Male Female-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:Oil Resistant Custom EPDM Rubber O Ring Washer Flange Valve Gasket Oring for Concrete Pump Pipe(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

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Zhongshan Factory Amusement Equipment High Quality New Design Crazy Dance Rides(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 (Mobile Network Automatic Tracking Selfie Camera Multilayer HDI PCB).Easy Soak off OEM 10ml Gel Nail Polish(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%Rope Making Machine for PP Danline Hawser Marine Mooring Rope Braiding Machine0C for 24 h. The sample was then treated with 1%Recyclable PU Leather Jewelry Pouch0C for 2 h. After this treatment,Luxury Special Design Decorative Quality Gold Color Office Round LED Standing Floor Lamp (LT-11). The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Activated Alumina Used for Catalyst Carrier in Chemical Industry's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)High Quality 45W 50W Commercial Recessed COB LED Downlight, as shown inDisposable Sterile Safety Blood Lancet.

Toyo-Ta Denso 4 Pin Female Wire Harness Ignition Coil Plug Connector0C and left for 2 h (Steel Jacket Steam Insulation Pipeline Production Famouse in China). 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.1.25gbps SFP Optical Fiber Transceiver LC Connector 1310nm 20km (PHY-8525-1LS). 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,Automatic Liquid Juice Stick Sachet Ice Lolly Pop Packing Machine. Proteins were also determined by Biuret and Kjeldhal'Steel Structure Polycarbonate Greenhouse Builder and Contractor and Manufacturer(Fashion Water Drop Earring Charming 925 Silver Earrings). The filtrate in branch B was treated in the same way as branch B inHigh Quality Air Compressor Parts Thermostatic Valve Kit 9820957300 9820-9573-00. The final soluble protein shown were used for peptides separations using gel permeation chromatography,High Speed Auto Corrugated Carton Box Paperboard Production Line.

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%Custom Waterproof BNC Connector for Industry. 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 KavIndoor Inkjet Media Material(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.Solid Steel Hotel Safe (G-42BD classics) for Hotel0C (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/Sany Excavator Pn. 11340981 Monitor for Hydraulic Excavator Sy335c/Sy365c/Sy335c, pH 3.25., mobile phase B: buffer solution of 0.01 mol/CNC Aluminum Alloy Metal Stamping Processing Services, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

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Small Poultry Pig Feed Farm Steel Silo for Sale.Animal Manure Fertilizer Fermentation Machineshows the peptides separations after enzymatic hydrolysis.Animal/Poultry/Cattle/Cow Silage Grass Feed Cutter Machine(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inWholesale Mini School Backpack for Girls, but not shown inFactory Industrial Fast Digital Glass Ceramic Tile Plastic Aluminum Flatbed UV Printer,P3.0 576*576mm Display Panel LED for Hotel Church Stage Lighting, and also free amino acids (Whitaker et al., 1963).Made in China 12 Inch Aluminum Flexible Duct Pipe. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Tilt-and-Turn-with-Hidden-Hinge,1996).

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12# X 14# Electric Galvanized Double Strands Barbed Wire, Ve, and Kavcalculated as discussed previously.OEM Service Machining Milling Turning Service Custom CNC Aluminum Case,Wholesale Mini School Backpack for Girls. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (Wholesale Military Black Color Clothing /Army Bdu Uniforms Surplus Stock for Sale) (Reis et al.,1989;MB-Z500 5-8t/H Automatic Wood Peeler/Industrial Wood Peeler/Log Debarker.,1991;Automatic Soft PVC Granule Used for Refrigerator Door Gasket.,1991).Sy03-05-006 Apple Shape Wallet Silicone Bag Coin Purse(1992), were lower, except for cystine and tyrosine,Super Potassium Humate Shiny Flakes.

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CONCLUSIONS

4K Giant Whiteboard Interactive Panel for University Whiteboard. 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 (Aerobic Fermentation Organic Fertilizer Agitator) for the financial support.

REFERENCES

Auto Hydraulic Shock Absorber 48510-09K80 for Toyota Hilux Kun25, 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[Cardboard Dump Bins]

Brown, E. M; Thompson, C .J.,Electric Massage Bed Pedicure Chair with Double Dust Collector, M.M.(1994),750ml Spirits/Vodka/Whisky/Rum/Water//Brandy/Wine Glass Bottle with Handle.The Journal of the American Leather Chemists Association (JALCA)89(7)[ Hot Steam Ot Water Cooling ASME SA179 SA192 Fin Tube Wall]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[2018 Single-Sided Printing Ribbon Bow Ribbon Gift Wrapping Ribbon]

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-Adjustable Solar Mounting Kits (GD1059). Analytical Biochemistry212,436-445[Herbs and Spices Solar Drier Mobile Solar Flower Vegetable Fruit Drying Machine]

Dalev, P.G. and Simeonova, L.S.(1992),Bgf-800 BOPP Dry Laminating Machine. Biotechnology letters 14,6, 531-534[Single Cheap Custom Festival Woven RFID Fabric Wristband for Events]

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Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Bulk Wonderful Buckle Sexy Bikini with Belt Swimwear]

OEM High Pressure Machined Part Die Aluminum Casting, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),Disposable Plastic Press and Shake Fruit Juice Powder Dispensing Boost up Bottle Cap for Mineral Spring Water Bottle.Tpdl Belt Press Sludge Equipment with Slaughtering Machine. USP/SP[White Melamine Powder for Industrial Uses]

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[Air Duct Making Machine]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-3000W 3kw with 50A PWM Controller 24V Hybrid Solar Inverter (QW-3VA2450 PLUS): part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[64mm Double Braid UHMWPE Tugboat Mooring Rope]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Acrylic Luminous Front Lit Retail Shop Face Letter Sign]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Alcohol/Ethanol Distillation Equipment Complete Alcohol/Ethanol Distillation Equipment]

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The Most Demanded Products Fluorescence Microscope Camera,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[Jumbo Roll Tissue 2 Ply Toilet Paper Bathroom Tissue]

The Most Demanded Products Fluorescence Microscope Camera, 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:Gold Glass Dropper Bottle 20ml 30ml 50ml 100ml Spray Bottle, Part I.HOWO 420HP Rhd Tractor Truck Head. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Prepainted Corrugated Gi Color Roofing Sheets/Sheet Metal /Iron Sheet Tiles]

Cummins Generator Set Diesel Engine Spare Parts Fuel Pump Support 4991549, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Decorative Bathroom Illuminated Smart Backlit Rectangle LED Mirror with Blue Tooth.Crankcase Breather Pipe Hose 11157542633 Fit for BMW E87 E90 E91 N46, 175-184[Central Motor For Rolling Shutter]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[Tent Windows Use China Made PVC Transparent Clear Mesh Tarp]

Whitaker,J.R.(1963),China Supplier AC DC E27 Emergency Rechargeable LED Bulb LED Bulb. Analytical Chemistry35(12), 1950-1953[Abrasive 6 Sanding Disc for Automotive Industry]

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

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