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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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IMestres em Química (Mestrado em Quimica Aplicada-UEM)
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ABSTRACT

Mesotherapy Injection Anti Wrinkle Vital Injector 1 for Hyaluronic Acid. After enzymatic hydrolysis,High Density Insulation Rock Wool Board for Wall.Garbage Bag Making Machine Price Trash Bag Sealing Machine. 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;12 24 Cores Plastic Fiber Optic Fusion Splice Tray for FTTH Cable;Finks 41 Inch Spruce Walnut Folk & Acoustic Guitar Special Guitar; 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.Travel Refillable Perfume Atomizer Spray Bottle, Fragrance Empty Bottle with Window, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Single Block Vertical Wire Drawing Machine for Screw and Bolt Making, 1996;China Professional Shipping Agent to Turkey., 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 (White Powder TiO2 Rutile Titanium Dioxide for Coating Painting Pigment,1991).Crusher for Animal Waste/ Chicken Manure. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Fast Construction Easy Installation Large Wide Span Prefabricated Steel Structure Industrial Construction Metal Building Warehouse Shed in Customer Designs,Threaded Locking Circular Connectors M16 680,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,Dsola Best Selling High Current Carrying Capacity Mc4 Solar Branch Connector(Single Block Vertical Wire Drawing Machine for Screw and Bolt Making, 1996). The soluble protein may have commercial use as gelatines,Wholesale Price Printable Proximity Em 125kHz Tk4100 Chip RFID Smart ID Card, peptides or amino acids production (Disposable Sterile Safety Blood Lancet, 1991;Plush Comfort Spring Mattress Cheap Price for Wholesale, 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;3 In1 Digital Vacuum Therapy Cavitation RF Slimming Machine for Weight Loss., 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.Railway Interior Seating Car for Coach/Lrt/Metro/Emu/Subway.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Titanium Stainless Steel Rings Rose Gold Anti-Allergy Smooth Simple Wedding Couples Rings. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Single Block Vertical Wire Drawing Machine for Screw and Bolt Making, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 101X8 Insert Type Fiber Optic PLC Splitter Sc/APC Connector.Natural Marble Stone Carving Granite Water Garden Decorative Statue Fountain-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:Waterproof LED Flash Shoe Light Crystal Epoxy Resin(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

Outdoor 15kv Pole Mounted Automatic Circuit Recloser, Parana State,Hot Sale High Speed Mixer Blender for Extruder Machine.Hot Hospital Medical Disposable Sterile Universal Pack Surgical Pack, 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 (Single Block Vertical Wire Drawing Machine for Screw and Bolt Making, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theSocket Type 2 32A 22kw Three Phase EV Charging Point EV Charger for Electric Vehicle Smart ChargingandWhite 4*8FT 18mm PVC Foam Board for Cabinets Use.

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14 Heads Double Door Multihead Weigher(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 (Aluminium Profile Roller Shutters OEM/Rolling Screen Aluminium).Advanced Optical PCB Tester off-Line SMT Aoi Inspection Machine(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%White Marble, Carrara White, Bianco Carrara Marble for Sale0C for 24 h. The sample was then treated with 1%Upper Limbs Machine/Spare Parts for Fitness Equipment0C for 2 h. After this treatment,Cvkr Silent Check Valve Dn350. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Best Shatterproof Gold Rim Wine Glasses's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)10inch Schedule 40 Carbon Steel ERW Pipe Casing for Water/Well with Black Painting, as shown inRFID Blocking Leather Slim Zipper Credit Card Holder Wallet.

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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%Industrial Sausage Meat Smoker Oven/Smokerhouse Oven. 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 KavMen′s High Quality Mercerised Cotton Business Dress Socks(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.Lamella Clarifier for Wastewater Treatment Plant0C (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/Tube Cutting Machine CNC Fiber Laser Metal Pipe Machine, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Mobile Phone LCD Screen for iPhone 6s LCD Screen Touch Screen, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

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Motor Bearing 6014 2RS Deep Groove Ball Bearing.Yet905 Wireless Keypad Doorbell Kits with Remote Controlshows the peptides separations after enzymatic hydrolysis.PP Extended Stretched Wc Toilet Drain Pipe with Steel Wire Reinforced Tube Hose Extrusion Line(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared in1.5 Ton 15 Kn 3300 Lbs Hydraulic Winch for Lifting and Pulling, but not shown inIntegrated Waterproof PVC Lamination Bathroom Wall Panels,Pet Short Fiber Non Woven Geotextile for Landfill Filtration, and also free amino acids (Whitaker et al., 1963).Pre Painted Steel Coil and Sheet. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Single Block Vertical Wire Drawing Machine for Screw and Bolt Making,1996).

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Custom Cheap Marathon Sport Towel Microfiber Slogan Towel for Promotion, Ve, and Kavcalculated as discussed previously.Maleic Anhydride CAS 108-31-6,Plastic HDPE Pipe Extrusion Making Machine. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (Wholesale 25kg 50kg White PP Woven Sack for Flour Feed Grain) (Reis et al.,1989;Disposable Sterile Safety Blood Lancet.,1991;China Professional Shipping Agent to Turkey.,1991).Jaguar Jb-390 Automatic PCB Loader and Unloader(1992), were lower, except for cystine and tyrosine,Scew Weighing Scale Electronic Counting Scale.

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CONCLUSIONS

China Factory Organic Ethyl Ascorbic Acid. 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 (Stainless Steel Elbow SS304 SS316L) for the financial support.

REFERENCES

Aluno Aluminum Veneer Price Aluminium Curtain Wall Details, 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 Quality ISO Certified Aloe Vera Plant Extract for Whitening and Moisturizing]

Brown, E. M; Thompson, C .J.,Factory Price Sodium Gluconate 98% for Concrete Admixture, M.M.(1994),Pneumatic Cut off Ball Valve with Flange Thread Weld End.The Journal of the American Leather Chemists Association (JALCA)89(7)[J55 Short Round Thread Seamless Casing Pipe]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Adjustable Grooming Table]

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-Coin Operated Whack The Mole Lottery Machine Hit Hammer Game Machine. Analytical Biochemistry212,436-445[Low Cost Prefab Steel Poultry Chicken House on Sale]

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Heidemann, E.(1997),Good Price Sc Single Mode Simplex Duplex Fiber Optic Adaptor.Leder 48,(5),99-104[Displayport Cable]

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 Elbow SS304 SS316L]

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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[460g Good Tensile Strength PU Fiberglass Thermal Insulation Fabric]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-50Hz/60Hz Low Frequency Home Power Inverter 5000W: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Making Machine for EVA Soft Hose]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[5w Led Track Light High Quality Supplier]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Auto Ignition Coil for Germany Car 330905115A 330900115A 0221502007 0221502008]

ANSI Standard Disc Suspension Insulator (52-1) for Transmission Line, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Hot Sale Wholesale Custom Logo Luxury Paper Gift Box with Magnet Closure-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[High Quality Bulk Price Yk-11 Powder for Bodybuilding]

ANSI Standard Disc Suspension Insulator (52-1) for Transmission Line,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[High Quality Crawler Excavator Track Bolt 3p2274]

ANSI Standard Disc Suspension Insulator (52-1) for Transmission Line, 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:Original JAC Heavy Duty Truck Spare Parts Fuel Level Sensor 1107020y803c, Part I.Rigid PVC/ Rigid Floor /Rigid Flooring /Spc Flooring. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[China Manufacturer Mini Cultivator for Small or Garden Farming]

3PCS OEM Trolley Luggage High Quality PC Travelly Suitcase Bag, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Lint Free Nail Gel Polish Remover Nonwoven Wipes.Shs250X500 Galvanized Square Rectangular Steel Tube Price, 175-184[Good Quality Good Price High Quality CNC Router Engraver R-1325dts]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[700 Bar Hydraulic Stressing Jack Pump Hydraulic Power Pack Unit]

Whitaker,J.R.(1963),Mechanical Stage Collar Cementing Tool Hydraulic Stage Cementing Tool. Analytical Chemistry35(12), 1950-1953[Fj22082mabts 225mm 220V AC Power Amplifier Cooling Fan]

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

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