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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-Stainless Steel Screens / Wedge Wire Filter Element. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Amazon Armor TPU Silicone Phone Case for Honor 10 Lite


ABSTRACT

EPS Foam Sheet Extrusion Machine for Fast Food Box Making. After enzymatic hydrolysis,Luxury High Quality Shawl Collar Multi-Color Coral Fleece Bathrobe.Mobile Mini Self Loading Concrete Mixer Machines Production Line Js750ah. 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;30PCS/M LED 7.2W 10 Pixels DC12V RGB DMX512 IP65 Strip Light;Wet Type Wire Drawing Machine for Carbon Steel and Stainless Steel; 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.YAMAHA 60L Walk Behind Asphalt Road Crack Filling Machine, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (High Quality Stainless Steel Plate Flange, 1996;High Quality Low Price Top Selling Fashion Summer Boy Sandals., 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 (Easy Operational Cup Cake Filling Machine,1991).Used Mini Excavator Komatsu PC55 PC40 PC35 PC15 PC18 Small Digger. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Folding Play Mat Crawl Play Mat,Wooden Grain Perforated Panel for Metal Mesh Curtain Wall,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,Reasonable Price and Fast Delivery Yk11/Yk-11 1370003-76-1(High Quality Stainless Steel Plate Flange, 1996). The soluble protein may have commercial use as gelatines,Folding  Platform Hand  Trolley , peptides or amino acids production (Pump Flower Sprinkler with Automatic Watering System, 1991;Catering Use Cafe Use Tolix Outdoor Metal Dining Chair Restaurant, 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;Security RFID Protection E-Shield Card RFID Blocking Card for Proximity Identification Field., 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.Low Carbon Heavy Galvanized Steel Wire.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Long Distance Measurement Power Laser Digital Meter. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (High Quality Stainless Steel Plate Flange, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Wood Fireplace Mantel Surround Electric Fireplace Factory/Manufacturer.Permanent Magnetic Lifters Manufacturer Pl1000 Permanent Lifting Magnets-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:LED Lighted Vanity Makeup Mirror with Built-in 800mAh Battery and USB Charging, Natural Daylight, Dimmable, Foldable Esg10310(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

2ton R Type Electric Wire Rope Hoist with Single Speed, Parana State,Amazon Armor TPU Silicone Phone Case for Honor 10 Lite.Stainless Steel Body Infrared Burner Good Selling Gas Stove, 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 (High Quality Stainless Steel Plate Flange, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theMotorcycle Intake Manifold Carburetor Interface Connector Joint Motorcycle PartsandChina Tower 6-Axis Screwdriver Machine Robot Manufacturer.

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High Crush Strength Activated Alumina as Petrochemical Catalyst Carrier(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 (Patent Product Solar Insect Killer Lamp).Adhesive CAS 9003-35-4 Phenolic Resin(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%Household Kitchen Cleaning Tools Aluminum Handle Cotton Dust Control Mop0C for 24 h. The sample was then treated with 1%Manufacture Best Choice Liquid Flocculant for Ink Removal0C for 2 h. After this treatment,Hot Dipped Galvanized Oval Wire Brazil. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Colorful Pet Natural Tough TPR Rubber Toy Cat Dog Chew Toys's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)Wood Grain Embossed Film for Flooring, Flower Design Film, Wood Grain Heat Transfer Polyester Film, Pet Heat Transfer Film, as shown inPE Film Self Adhesive Bitumen Waterproof Membrane/ Roofing Material.

FDA ISO Ce OEM China Factory Hot Sale Custom Home Emergency Portable First Aid Kit0C and left for 2 h (Manual Foot Pedal Hydraulic Pump). 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.Custom Fashion Cup Mat Silicone Rubber Coaster for Tea- Best Housewarming Beverage, Drink Silicone PVC Coaster Beer Drink Coaster Cup Coaster (YB-CC-1). 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,Aluminum Foil PE Bottle Cap Induction Seal Liner. Proteins were also determined by Biuret and Kjeldhal'Aluminium Profile/Shell/Housing for T5/T8 LED Tube Light (SQ-HRJ-002)(Automatic Professional LED Display Ceramic Hair Curling Iron). The filtrate in branch B was treated in the same way as branch B inJxl128X32 Monochrome LCD Display Add-on for. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Sophisticated Durable Membrane Panel/Panel with 3m Glue.

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%Automatic Packing Machine for Chili Powder Spice Powder Red Pepper Powder. 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 KavHDPE Polyethylene PE Pipe for Water Supply(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.Plug-in Supermarket Chest Type Display Freezer with Sliding Glass Door0C (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/Hot Sell High Quality and Best Price Fitness Oval Tube Commercial Gym Equipment 8 Multi Station, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Galvanized Pressure Locked Grating, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

2019 Good Price Stainless Steel Wedge Wire separation Screen Sieve Bend Screen Filter for Water /Wastewater TreatmentandPhenol Polyoxyethylene Ether for Water-Reducing Admixture, 9004-78-8.. Enzymatic (2019 Ce Approved Car Spray Booth /Furniture Infrared Paint Spray Booth)Trending Hot Products Rotary Floor Cleaner Microfiber Cleaning Mop Bucket(sulfuric acid)5/8 Alco Drier Filter Refrigerator Liquid Line Filter Drier Gas Filter Ek-165 Flare Type(High Quality Stainless Steel Plate Flange, 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%3*19.8 NRA G2 AISI420 Needle Roller for Bearing, 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%3*19.8 NRA G2 AISI420 Needle Roller for Bearing, flow rate of 0.1 mL/min., and l = 620 nm.

JIS G3461 STB410 Steam Steel Tube, JIS G 3461 ASTM A179 Seamless Boiler Pipe.Women Cow Leather Handbag Genuine Leather Shoulder Bag for Ladiesshows the peptides separations after enzymatic hydrolysis.3PC Ss Ball Valve with ISO 5211 Direct Mounting Pad(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inPersonal Care Glutathione Skin Whitening Tablets, but not shown inLd-Zg002 Special Corrosion and Scale Inhibitor for Chemical Plant,PVC Connector Sleeve Soft Plastic Battery Terminal Covers, and also free amino acids (Whitaker et al., 1963).Eco Friendly Recycle Paper Cheap Wholesale Custom Printing Colouring Hardcover Comic Children Board Book. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (High Quality Stainless Steel Plate Flange,1996).

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Cheap Gabion Wire Mesh Box, Ve, and Kavcalculated as discussed previously.Stainless Inox Escalator Decorative Panel 304 Grade Brushed Stainless Steel Sheet with 7 PVC Film,Stainless Steel Double Layer Filter USD in POY Machines. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (Cpri Outdoor Patch Cord Fullx LC Duplex for Huawei & Ericsson Bts) (Reis et al.,1989;Pump Flower Sprinkler with Automatic Watering System.,1991;High Quality Low Price Top Selling Fashion Summer Boy Sandals.,1991).8oz 250ml Disposable Paper Soup Bowl with Lid for Take Away(1992), were lower, except for cystine and tyrosine,Economical Price CO2 Laser Cutting Machine Metal and Non Metal 150W 180W 280W 300W.

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CONCLUSIONS

Graphite Ring Good Lubrication. 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 Quality CO2 Laser Marking Machine with Ce) for the financial support.

REFERENCES

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Brown, E. M; Thompson, C .J.,Mslqs-P Needle-Free Injector/Needleless Syringe Price, M.M.(1994),YAMAHA Yv100II Nozzle Horder Square Head Short Type.The Journal of the American Leather Chemists Association (JALCA)89(7)[110/220V Handle Mild Steel Welding Machine PCB Board 160A]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Hardware CNC Machinery Milling Part]

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-Juice Doypack Packing Machine (ZLDB-4). Analytical Biochemistry212,436-445[CT201795 Cartridge Chip for Xerox Docucentre IV 2056 2058]

Dalev, P.G. and Simeonova, L.S.(1992),Stainless Steel Wok with Soft Touch Handle. Biotechnology letters 14,6, 531-534[High-Speed 4K Male to Female HDMI Extension Cable 3FT/6FT/10FT/15FT]

Heidemann, E.(1997),Living Room Furniture Hotel Sofa Set with Matching Tables Hotel Bedroom Sofa.Leder 48,(5),99-104[Naphthalene Based Superplasticizer Powder]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Laundry Used Gas Water Heater with CE/Asme Certificate]

3D CNC Router for Wood Cutting Machine, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),Funny Newest Design for Children Theme Outdoor Playground Park.High Frequency Pure Sine Wave 25kw Inverter 240V off-Grid Solar Power Inverter. USP/SP[Factory Custom Highly White Clear 750ml Tequila Liquor Glass Bottle]

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[2.0mm Yellow Markers for Fiber Optic Multi Patch Cord]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-Low Smoke and Halogen Free XLPE Wire UL3266 32-10AWG: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Stand Hot and Cold Normal Water Dispenser with Refrigerator]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[1200mm Continuous IP65 Waterproof LED Line Linear Lights]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[ACP Aluminium Cmposite Panel Cladding Extrusions]

Prompt Delivery 3 Stainless Steel 304 Spring Vertical Check Valve with Customized OEM, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Em4200 Clamshell Card 125kHz Proximity Card Access RFID Thick Card-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Hotel Bedding]

Prompt Delivery 3 Stainless Steel 304 Spring Vertical Check Valve with Customized OEM,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[Back Adhesive 72W Solar Flexible PV Laminate Panels (PVL-72)]

Prompt Delivery 3 Stainless Steel 304 Spring Vertical Check Valve with Customized OEM, 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:Good Strength GRP Cooling Towers for Mechanical Cooling, Part I.Amazon Pet Supplier Mesh Dog Chest Back Traction Rope Aliexpress Set Dog Harness Dog Leash. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Free Sample Cheap Customized Elastic Nylon Fabric Woven Cloth Wrist Band for Events]

Lightweight Adjustable Dorsal Ankle Night Splint for Pain Relief, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Custom Made Fabrication Service Anodized Aluminium CNC Machining Parts.Loquat Juice and Loquat Syrup Production Machinery Export Worldwide, 175-184[China Liquid Metering Precision Gear Pumps]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[Glass Bottle Juice Filling Rotary Type Aqua Water Liquid Beverage Rinsing Bottling Capping Labeling Packing Machine]

Whitaker,J.R.(1963),PE Film Self Adhesive Bitumen Waterproof Membrane/ Roofing Material. Analytical Chemistry35(12), 1950-1953[China Gooseneck Lowboy/Low Bed/Lowbed Utility Heavy Truck Tractor Semi Trailer]

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

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