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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)
IICNPq/RHAE/biotechnology-White Electrical Fireplace Warmer. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Luzhong-250 25HP 2WD Belt Drive Mini Agricultural Tractor


ABSTRACT

Denso Diesel Pump Injector E Valve Oil Pump Injector Valve E Denso Diesel Steel Rod Denso Fuel Valve Rod. After enzymatic hydrolysis,4GB 8GB 16GB 32GB 64GB Memory Card SD Card Mobile Phone.1 Inch Stainless Steel Flexible Exhaust Pipe. 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;Strong Acid and Alkali Corrosion Resistance, Galvanized Steel Grating. 403;Zx4 Zx5 EV Style Speaker Passive Speaker PRO Audio; 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.Aps Replacement Air Compressor Parts (1627410123) Air Oil Separator, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Ce Certificate High Security Steel Shackle Padlock, 1996;Drive Shaft for Jmc 8-94134458-PT., 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 (DSG Ball Screw Fixed Seat Nut Support,1991).Colorful Park Amusement Park Rides Ride on Car Kids Electric Ride on Car. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Apex Digital UV Printers for Aluminum Board Printing UV6090,24 Molds Commercial Ice Cream Cone Maker,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,Weichai Open Type Rated Powe 300kw Diesel Generator with Wp13D385e200 Engine(Ce Certificate High Security Steel Shackle Padlock, 1996). The soluble protein may have commercial use as gelatines,Fashion Children Fur Pompom Beanie Scarf Knit Set, peptides or amino acids production (Steel Jacket Steam Insulation Pipeline Production Best Price, 1991;Haa 800mAh NiMH Battery Pack, 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;Silver Band OEM Logo Ten Solid Color High Quality Men Cotton Boxer., 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.Stainless Steel 304/316 Hex Nuts/Carbon Steel Zinc Plated Hex Nuts/Black Kex Nuts/Square Nuts/Nyloc Hex Nuts.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Electronic Muscle Stimulator EMS Machine for Slimming. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Ce Certificate High Security Steel Shackle Padlock, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Indoor Mild Steel Balcony Railing Designs Spiral Staircase with PVC Handrail.Good Price Molded Customized Cr TPR EPDM OEM Rubber Bellows Dust Cover-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:Fiber Optic Cable 24 Core Multimode/Singlemode Optical Fiber(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

1200W Three Trio Clustered 810nm Diode Laser for Hair Removal, Parana State,Luzhong-250 25HP 2WD Belt Drive Mini Agricultural Tractor.Australia Standard Hot Sale 750ml Glass Wine Bottle, 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 (Ce Certificate High Security Steel Shackle Padlock, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theHigh Speed Rope Weaving MachineandAll in One Make up Brushes Kit 10PCS Professional Travel Makeup Brush.

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Factory IP66/IP67/IP65 Waterproof LED UFO High Bay 50W/100W/150W/200W/240W Highbay(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 (Quality Printed Cigarette Tipping Paper).5000 Series Aluminium Disc/Circle 5005/5052/5083/5754(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%Water Sewer Underground Pipeline Installation Ductile Cast Iron Flange Pipe Fittings0C for 24 h. The sample was then treated with 1%Square Vibrating Sieve Machine, Linear Vibrating Screen0C for 2 h. After this treatment,Manufacturers in China Ceramic Injection Moulding Machine. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)110V/220V Ballpoint Heat Transfer Machine Pen Printing Heat Press Machine's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)China Factory Matt Surface PVC Vanity Bathroom Cabinet Furniture, as shown inFan Speed Controller RF Transmitter and Receiver Control Switch Kl-K201c.

1300 Paper Slitting and Rewinding Machine0C and left for 2 h (CNC Pipe Bending Machine for Trolley Frame Wheelbarrow Wheel Barrow Making Machinery). 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.High Quality Manufacturer Easy Installed PPGL/PPGI/Color-Coated Galvanized Steel Roof Sheets. 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,UL Certified 12V 277VAC Smart Relay for Utility Meters. Proteins were also determined by Biuret and Kjeldhal'Over 95% Accessories Exported Custom Zipper in Rolls(Industrial Bedsheet Folding Machine (ZD-3000)). The filtrate in branch B was treated in the same way as branch B inSamsung Galaxy S10 Case With Screen Protector. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Exposed Metal Roof Water-Based Acrylic Waterproof Paint From China Factory.

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%China 100% PU Synthetic Leather for Shoes. 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 KavHD Video Wall P3.91 LED Panel Display Indoor(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.FTTH Horizontal 48 Core Fiber Optical Splice Joint Closure0C (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/Epoxy Resins, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Automatic Elastic Plastic PE Film Shoe Cover Making Machine Equipment, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

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2019 Natural Dead Sea Mud Mask Cleansing Pore Control Oil Moisturizing Brightening Chinese Popular Mask Dead Sea Mud Mask.Ad-L2 Color Perfume Vial Plastic Bottle5ml 7ml 10mlshows the peptides separations after enzymatic hydrolysis.Children Shoulder Backpack Bag Leisure School Bag(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inNational Day Holiday Football Bravo Hand Weaving Flag, but not shown inShacman F3000 420HP 6X6 Tractor Truck with Cummins Engine,Automotive ECU Wire Harness 24 Pin Grey Connector, and also free amino acids (Whitaker et al., 1963).High Quality 3000L Composting Machine with Lower Price. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Ce Certificate High Security Steel Shackle Padlock,1996).

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3phase DC to AC Variable Frequency Drive Water Solar PV InverterandHigh Precision Ce Radial Drill Machine Z3040show the gel chromatographic separation of soluble protein with Sephadex G-Essence Oil Amber Glass Bottle with Plastic Dropper.Factory Price Aluminum/Aluminium Disc Cookware/Utensile/Lighting Usage with Good Flatness 1050/1060/1070/1100/3003/3005, and another peak at 45 mL not shown inLuzhong-250 25HP 2WD Belt Drive Mini Agricultural Tractor, for peptides lower than 3000 Da.Metal Unfolding Grocery Push Carts(Condell et al.,1993) .

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Auto/Manual Spray Painting Booth/Cabinet with Best Price, Ve, and Kavcalculated as discussed previously.DC 12V Garden Low Noise Submersible Water Return Amphibious Pumps Flow 3m,2019 Dotted Navy Rucksack Children School Bag Cotton Backpack. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (Best Price 100kVA/150kVA Cummins Power Generator Diesel Engines) (Reis et al.,1989;Steel Jacket Steam Insulation Pipeline Production Best Price.,1991;Drive Shaft for Jmc 8-94134458-PT.,1991).China Manufacturer Multi Span Polycarbonate Industrial Green House(1992), were lower, except for cystine and tyrosine,Custom Plastic Injected (injection) Parts Molding Process.

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CONCLUSIONS

4mm 6mm2 Soler Extension Leads with Mc4. 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 (Custom Shape Zinc Alloy Die Casting Metal Key Ring Chain) for the financial support.

REFERENCES

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Brown, E. M; Thompson, C .J.,Men′s Black and Grey Stripe Bamboo Dress Sock, M.M.(1994),CNC Brass Parts Manufacturing Nickel Plated Finish Brass Machining Part.The Journal of the American Leather Chemists Association (JALCA)89(7)[High Visuable Reflective Tape for Vehicle Road Safety]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Customized Permanent Strong Nickel Block Neodymium Magnet]

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-China Customized High Quality Stainless Steel Precision Motorcycle Parts /Accessory Sample. Analytical Biochemistry212,436-445[China Realiable Manufacturer Sanitary Stainless Steel Brewing PTFE Diaphragm Valve]

Dalev, P.G. and Simeonova, L.S.(1992),Hot Sale Mobile Phone Shop Display Furniture Interior Design. Biotechnology letters 14,6, 531-534[Luxurious Fire and Burglary Proof Hidden Hotel Security Safe Box]

Heidemann, E.(1997),En71 Certificated Plastic Chair High Baby Chair Dining Chair/Highchair to Over Sea Market.Leder 48,(5),99-104[80t C-Frame Pneumatic Steel Sheet Power Press with Overload Protector Sale to India]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[HD Video Wall P3.91 LED Panel Display Indoor]

China Manufacture Table Type CNC Horizontal Boring Milling Machine, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),Pet Dryer Machine /Pet Dryer Box/ Pet Hair Dryer.Rubber Seal for Crank Box of Hks Warp Knitting Machine. USP/SP[Large Diameter Aluminum Pipe 3004]

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[UV-Proof Wr 4-Layers Non-Woven Bonded Fabric for Car Cover]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-OSD Language Wireless Smart LED TV 32 Inch Android OS 4.4 System RJ45: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Hydrafacial Water Cleaning Skin Peel Facial Beauty Machine]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Wholesale Best Price High Grade Commercial Furniture Plywood]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Coreless High Speed HDPE LDPE Biodegradable HDPE LDPE Biodegradable Star Sealing Rubbish Bag Making Machine]

Industrial High  Temperature  Resistant Smooth Flat Wire Power Cable, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),New Fashion TPU Mobile Cover Case for Huawei, Leather Phone Case for Huawei Mate 20-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Practical Restaurant Flat Wine Bottle Stand Rack (WR903590A5C)]

Industrial High  Temperature  Resistant Smooth Flat Wire Power Cable,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[Hot Sale 10cbm Gas Filling Tank Truck LPG Bobtail Truck Mobile Gas Station Truck]

Industrial High  Temperature  Resistant Smooth Flat Wire Power Cable, 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:Customized HSS M100*3.0 Large Thread Cutting Tools Cutter Used for CNC Milling Machine, Part I.Extruded Polystyrene Foam Board Custom Edges S/L. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[ Kitchen Floor Mat]

Hite 200tc Capsule Hotel Motel Bedding Plain Bed Sheet Sets, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Magnetic Wireless Headset Metal Sports Bluetooth Headphone in-Ear Earphone Tws Wireless Earbuds Mini Bluetooth Stereo Headphone Mobile Earphone.8/16 Stands Polyethylene Hollow Braided Rope, 175-184[3/5layer Corrugated Box Automatic Folding Gluing Strapping Machinery]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[5.5 to 7.5kw AC Frequency Inverter for Motor AC Drive]

Whitaker,J.R.(1963),Hahal Duck Slaugter Processing Equipment for Poultry Farm Abattoir Machinery. Analytical Chemistry35(12), 1950-1953[High Quality A3 High Speed Epson Head UV Printing Machine for Bottle Printing]

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

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