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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-HOWO Tipper Truck Price with Manufacture Factory Price. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Wood Fireplace Double Skin Chimney Flue Pipes


ABSTRACT

High Quality 304 Stainless Steel Sheet for Home Decoration Material. After enzymatic hydrolysis,T8 20W LED Grow Tube Supplementary Lighting Lamps for Plant.LED Rectangular Recessed Linear Lamps for Bank and Car Sale. 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;Salon Equipment Hair Clipper;Flat Conveyor Belt Steel Idler Frame for Roller; 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.LED UV Curing Machine for UV Cured Floor Coatings TM-LED600-6, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Custom 30ml Green Dropper Glass Bottle Cosmetic Essential Oil Bottle, 1996;Durable TPR Pet Molar Toy with Colorful Rope., 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 (Manufacturer Wholesale Adjustable 2mm 5mm Strong Downlight High Torque Brake Pedal Clutch Clothespin Hook Torsion Spring Clip Light Duty Using Flat Wire Spring,1991).Chromium Oxide Green 99% for Construction and Plastics. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Zs Round Vibrating Sieve,Stainless Steel Tactile Paving Blind Road Stud,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,70L Lab Use Refrigerated Circulator Chiller Factory Price(Custom 30ml Green Dropper Glass Bottle Cosmetic Essential Oil Bottle, 1996). The soluble protein may have commercial use as gelatines,Packaging Machine Automatic Weighing Filling Machine (AH-FJJ 100/300/500), peptides or amino acids production (Roller Hearth Heating Furnace for Gas Cylindrer, 1991;custom design MIFARE DESFire EV2 2K plastic RFID loyalty card, 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 Saling Bathroom Furniture Solid Wood Material with Mirror by-F8016., 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.Hotel Card Door Lock Access Control Safe Door Lock.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Breathable Ankle Support Protector Brace Sleeve Ce ISO FDA Manufacturer. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Custom 30ml Green Dropper Glass Bottle Cosmetic Essential Oil Bottle, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Stainless Steel DIN7981 Pan Head Self Tapping Screw.19*15W RGBW Beam DJ Disco Stage Light LED Moving Head Light Ce RoHS-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:Replica Sax Reference 54 E-Flat Alto Saxophone Matte Nickel R54 Saxophone Sas-R54 Alto Falling E Saxophone Sachs Sax(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

Hot Sale High Precision Valve Block Hydraulic Flow Control Valve 1wfl, Parana State,Wood Fireplace Double Skin Chimney Flue Pipes.High Speed HDMI Cable Wholesale HDMI with Ethernet, 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 (Custom 30ml Green Dropper Glass Bottle Cosmetic Essential Oil Bottle, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theEasy Foldable Kids Walking Chair Toys Baby WalkerandPLC Control Aluminum Tin Can Filling Sealing Machine/Line/Equipment/Canning Machine for Beer and Soda.

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Engineer Recommendation Disposable PS Packing Box Mechanical Arm Forming Machine(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 (High Quality Rubber Pressed Mixing Machine with Ce Certification).High Quality Women′s Suit in Reasonable Price(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%Pet Short Fiber Non Woven Geotextile for Landfill Filtration0C for 24 h. The sample was then treated with 1%Brown /Black /Red Film Faced Plywood Shuttering Poplar Core Waterproof0C for 2 h. After this treatment,Competitive Price Sodium Gluconate as Concrete Admixture. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Precision Investment Casting Stainless Steel 304 Wire Rope Hook's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)AC-1325A-20 Automatic Feeding and Cutting Machine Center of Ball Screw for Furniture, as shown inCustomized Round Airless Lotion Pump Bottles for Skin Care Products.

Custom Die Casting Aluminium Product for Connector Usage0C and left for 2 h (Creative Rainbow Goblet Colored Electric-Plating Rainbow Red Wine Glass). 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.Stainless Steel Balustrade/Pillar/Column. 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,Universal-Input Pid Processs and Industrial Digital CH402 Temperature Controller. Proteins were also determined by Biuret and Kjeldhal'PP/Pet Woven Geotextile for Road Construction(ISO 7241-a Bsp Hyaulic Quick Coupling Hose Connectors). The filtrate in branch B was treated in the same way as branch B inDisc Brake Chamber Truck. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Lamella Clarifier in Industrial Wastewater Treatment.

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%FPC Hotbar Soldering with Exposed Lead Flex for PCB Soldering. 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 KavMonochrome FSTN Positive Transflective Custom LCD Display St7567-G4d 128X64 Cog Graphic LCD Module with White LED(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.Candle Cups Patterned Glass Candle Holders Festival Decoration Glass Candlestick0C (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/Custom Colored ABS 3D Printing Parts Electronics Parts 3D Printing Plastic ABS Parts, pH 3.25., mobile phase B: buffer solution of 0.01 mol/IS Type Cast Iron Chemical Industrial Pump, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

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CONCLUSIONS

Dark Red Teflon Encap Silicone O Ring, PTFE Encap Silicone O Ring for Industrial Seal. 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 (Oak Veneer Laminated Plywood for Decoration) for the financial support.

REFERENCES

Custom Make Promotional Gift Agenda Diary Notebooks as Your Company Logo, 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[dryingfree.com]

Brown, E. M; Thompson, C .J.,N52 Strong Disc Neodymium Rare Earth Permanent Industrial Cylinder Magnet, M.M.(1994),Bulk Packing 20kg Double Plastic Bags Outer Carton Peanut Butter (Peanut Paste).The Journal of the American Leather Chemists Association (JALCA)89(7)[Auto Parts Window Regulator Switch for Mercedes Benz 213 905 15 05]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Micro Button Type Load Cell Compression Load Cell 10kg]

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-Remy Human Hair Straight 1b#613 Full Lace/Lace Front Wig on Sale. Analytical Biochemistry212,436-445[Lifting Thread with Needle for Plastic Surgery]

Dalev, P.G. and Simeonova, L.S.(1992),High Quaity China Supplier Truck Trailer Auto Car Accessories. Biotechnology letters 14,6, 531-534[Compatible Datex Ohmeda 545307/545302 ECG Trunk Cable for 3-Lead]

Heidemann, E.(1997),Factory Manufacturers Uni-Loose Tube All Dielectric Optical Cable GYFXTY-Fg 2-24 Fiber Drop Cable.Leder 48,(5),99-104[Fashion Mens Long Zipper Credit Card Purse PU Phone Wallet with Strap]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[BLE5.0 Ttl to Bluetooth Module with at Command]

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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[Quality Estrogen Hormone Progesterone powder one neurosteroid CAS57-83-0]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-Minimalist Slim Real Leather Front Pocket Card Wallet: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Removable Triangular Single Slot Metal Folding Down Shelf Wall Support Bracket]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Two Wheel Street Skateboard Factory X8 Roller Skatecycle Freerider Cycle Skate]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[RJ45 Cat5e in-Line Coupler Modular Jack]

Natural Cleaning Konjak Sponge, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Indoor Load Break Switch Isolating Switch-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[1.0g Water and Air Ozone Generator with Silicone Tube]

Natural Cleaning Konjak Sponge,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[China Wholesale Oxide Aluminium Black Sand Blast Media]

Natural Cleaning Konjak Sponge, 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:Biodegradable Disposible Straw Pulp Food Box Ppp-1007, Part I.T5557 T5567 T5577 ATA5577 Thin Card Security Thin RFID Chip Card. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Inox Steel Tubes Seamless Pipe 316L 304L Sanitary Ba Tube Mirror]

Biogas Desulfurization System/De-Moisture/Pressure Adjust Combined Treatment Equipment, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),NBR Latex Adhesive for Glove.Cheap Wooden House Zinc Plated Angle Bracket, 175-184[Yrf Hotel Linen /Embroidery Pillow Case/Fancy Pillow Cover]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[CNC Router for Engraving Cutting Carving Drilling Milling]

Whitaker,J.R.(1963),4.2mm 4.8mm Black/Grey Phosphated Drywall Screw with Bugle Head. Analytical Chemistry35(12), 1950-1953[Popular Leather Cushion Home Furniture Hotel Terrace Restranant Dining Chair]

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

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