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^IMestres em Química (Mestrado em Quimica Aplicada-UEM)
^IICNPq/RHAE/biotechnology-Nice Appearance Brass Metal Sheet Stamping. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Hot Sale Starter Motor Testing Equipment for Truck, Bus

ABSTRACT

Home Machine 2019 New Commercial Treadmill Gym Equipment. After enzymatic hydrolysis,New 50ml Glass Spray Bottle Green Refillable Bottles Vial with Glass Dropper for Essential Oil Perfume Cosmetic.Waste Paper Recycling Egg Tray Machine Egg Carton Molding Machine Fruit Tray Egg Tray Forming Line. 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.Mirror Face Style Acrylic Round Wall Mounted Hanging Fish Bowl, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Hot Sale Flat New Design Ladies Winter Warm Shoes, 1996;Food Grade PVC Gloves Disposable Safety Medical Examination Vinyl Gloves., 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 (OEM Custom Design Print Cotton Microfiber Travel Beach Towels Manufacturer,1991).China Factory Plant Manufacturers Hot Feed Rubber Extruder Machine. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,2019 RF Skin Tightening IPL Skin Rejuvenation Shr Hair Removal,IP67 High-Ending Industrial Socket / Connector,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,Mc4 Solar PV Connector TUV Approval(Hot Sale Flat New Design Ladies Winter Warm Shoes, 1996). The soluble protein may have commercial use as gelatines,PP Value 20kg Cement Industrial Use Kraft Paper Valve Bag 25kg China, peptides or amino acids production (Reverse Osmosis Water Filtration Device/RO Plant Process/RO Plant Price, 1991;Over Band Round Type Electro Magnetic Separator for Tramp Iron, 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;Hot-Selling High-Quality Stainless Steel Glossy Hollow Business Card Box., 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.Automatic China Beef Cattle Sheep Tripe Washer Cleaning Machine.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-0.3-30mm Jc-EPE220 EPE Foam Sheet Making Machine Manufacturer. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Hot Sale Flat New Design Ladies Winter Warm Shoes, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 99⁰C ± 1⁰Bgf-800 Pet Dry Laminating Machine.Dimmable Industrial Indoor Commercial Indoor LED Highbay Lighting for Warehouse-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:Plastic Bottle Shape Zipper Bag for Candy Snacks Gift Packaging(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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Epoxy Resins

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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%Top Quality Inox Plumbing Sanitary Stainless Steel 304 316 Press Fitting Fittings Water Meter Fittings Hose Quick Connector. 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 (V_t) was determined with a 30 mL/mL acetone, reading the absorbance at 264 nm. Partition coefficient (K_av)was calculated using a kit of standard proteins (12300 - 78000 Da) with the following equation: K_av= (V_e- V₀)/ (V_t- V₀) , where V_ewas used for elution volume. Plot of K_avUsed Japanese Mini Excavator Komatsu PC55mr Digger with Rubber Track(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.Popular Cheap Custom Logo Black Silicone Wristband in High Quality⁰C (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/Factory Good Quality High Precision Machined Milling CNC Brass Parts, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Volatile Oil, Plant Extracts, Feed Antibiotic Substitutes, pH 7.40. Post-column temperature was 130⁰C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

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Polished Any Length Size Display Table Aluminium Extrusion ProfileandNew Condition Textured Peas Soy Protein Making Machineshow the gel chromatographic separation of soluble protein with Sephadex G-0.15mm 0.2mm 0.3mm 0.5mm 1mm 2mm 5mm 2014 Aluminum Alloy Coil for Food Preparation.China Factory Top Push Slide Switch with 7pin SMD Type (MSK-1106), and another peak at 45 mL not shown inCeramic Dinnerware Set Stoneware Coffee Mug 5.5inch Bowl Hand Painted Dessert Plates, for peptides lower than 3000 Da.Double Bowl Undermount for Stainless Steel Kitchen Sink(Condell et al.,1993) .

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CONCLUSIONS

Large Diameter Aluminum Pipe 3004. 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 (Polyester Cocoon Bobbins Thread for Household Textiles) for the financial support.

REFERENCES

Hpzmflb Energy Saving High Lumen IP65 Outdoo LED Flood Light, 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 Broiler Auto-Cage System]

Brown, E. M; Thompson, C .J.,Ambient Light Rejection Wall Hanging Projector Screen 100 for Home Theater, M.M.(1994),Copy Paper Writing Paper Newspaper Toilet Paper Tissue Paper Kraft Paper Fluting Paper A4 Paper Facial Paper White Board Paper Wrapping Paper Machine.The Journal of the American Leather Chemists Association (JALCA)89(7)[Custom Precision Aluminum Die Casting for Bicycle Accessories]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Best Selling Road Reflective Rectangle Guardrail Delineator Reflector]

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-Wholesale Logo Printing Cheap Gold Custom Paper Clip. Analytical Biochemistry212,436-445[PVC TPU Tr 2 Color Sole Injection Moulding Machine]

Dalev, P.G. and Simeonova, L.S.(1992),TP304L Stainless Pipe /Heat Exchanger/Condenser Tube;. Biotechnology letters 14,6, 531-534[OEM Electrolyte Effervescent Tablet]

Heidemann, E.(1997),Non - Smell Fiber Reinforced PVC Garden Hose.Leder 48,(5),99-104[axle Fuel Tanker Truck Trailer]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[DSG Ball Screw Fixed Seat Nut Support]

19m Mobile LED Display Billboard for Advertising Screens, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),PE Film Sanitary Napkin Back Sheet / Under Pad Back Sheet.Boiler Room Ventilation Exhaust Fan. USP/SP[Modern Container House / Modular Residential / Prefabricated Mobile Home]

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[European Standards 100A 24V Electrical Relay for Green Energy]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-Hot Sale Knee Type Vertical Milling Machine for Sale (X5036): part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Portable Ink Date Printing Machine for Plastic Bag]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Chain Link Fence End Spacer]

Standard Methods for the Examination of Water and Wastewater(1992), 18^thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Kids Waterproof Softshell Jacket with Brushed Fleece Inside]

Flour Sack Bag Polypropylene Bags 50 Kg Woven Polypropylene Sacks, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),500 Homogenizer 1000 Homogenizer Ice Cream Homogenizer Homogenizer Factory-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[China Factory Matt Surface PVC Vanity Bathroom Cabinet Furniture]

Flour Sack Bag Polypropylene Bags 50 Kg Woven Polypropylene Sacks,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[150ml Round Aromatherapy Diffuser Glass Bottle]

Flour Sack Bag Polypropylene Bags 50 Kg Woven Polypropylene Sacks, 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:Dental Apex Locator Endodontic 4.5′ LCD Root Canal Touch Screen, Part I.New Style Indoor Dynamic Digital LED Waterfall Water Curtain Fountain. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Livestock Poultry Farm Pig/Sow/Hog/Piglets Breeding Machine for Sale]

New 14 Inch Diamond Saw Blade for Granite Cutting, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),TV Antenna (CH50006).4PCS High Quality Adjustable Wrench Set (FST-41), 175-184[Stainless Steel Aluminum High Speed High Pressure Steel Air Rotary Joint Union]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[CNC Machined Parts Aluminum/Brass/Steel/Stainless Steel Parts]

Whitaker,J.R.(1963),Three F Female Connector Adapter. Analytical Chemistry35(12), 1950-1953[EVA Puzzle Mat with Letters for Kids Playing Customized Pictures]

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

White Electrical Fireplace WarmerAuthor for correspondence