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Braz. arch. biol. technol. vol.42 no.3 Curitiba  1999

Bio Media

ARTICLES


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Choker Bead NecklacesEdivaldo E.GarciaI; Cláudia C.M.Galvanized Square Wire Mesh, Metal Window ScreenI; Ariovaldo C.MartinsII; Gisele O. RochaII;Jorge Nozaki28/400 28/410 28/415 Plastic Sprayer Pump From Manufacturer Chinese Sprayer


IMestres em Química (Mestrado em Quimica Aplicada-UEM)
IICNPq/RHAE/biotechnology-Qiankai Anti-Theft Burglarproof Unbreakable Stainless Steel Security Window Screen Factory. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,2019 2 Wheel Folding Electric Scooter 5.5inch 24V 250W Foldable Scooter


ABSTRACT

OEM Customized Stainless Steel Parts by Deep Drawing. After enzymatic hydrolysis,Children Bear English Story Book Printing.Flexible Board FPC PCB Camera Module Rigid Flex PCB. 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;High Quality 80/ 90/ 100GSM C2s Coated Paper for Printing;Cherry Wooden Grain PVC Film in Furniture; 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.Shr IPL Elight Hair Removal and Skin Rejuvenation Beauty Machine, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Dedi with Samsung LED HD Display 3X3 LCD Did Video Wall Walls 46 Inch 5.3mm Seamless TV, 1996;Hot Selling Extruded Aluminum Window Frame and Sliding Door Profile for Curtain Wall (A44)., 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 (Agricultural Irrigation Centrifugal Double Suction Diesel Water Pump,1991).Linen Quiltcover Set with Quilting. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,2V250AH OPzV GEL Lead battery Tubular Plate UPS EPS Deep Cycle Solar Power VRLA Battery 5 Years Warranty >20 years Life,Trolley Type Bogie Hearth Steel Billets Annealing Heat Treatment Furnace,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,Teerte Square Flat Head Self Tapping Screw(Dedi with Samsung LED HD Display 3X3 LCD Did Video Wall Walls 46 Inch 5.3mm Seamless TV, 1996). The soluble protein may have commercial use as gelatines,Jdz-1030 High Precision Screen Printing Machine for Satin Ribbon, Cotton Tape, Elastic Tape, Lanyard, peptides or amino acids production (Bto 22 Electric Galvanized Razor Concertina Wire for Military, 1991;Hollywood Style Bluetooth Salon Makeup Mirror with LED Built-in Lights, 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;Tonva New Design Water Pipe Making Extrusion Blow/Blowing Molding Machine., 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.Hot Selling Military Large Event Marquee Tent Sale.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-High-Quality Pre-Seasoned Cast Iron Wok. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Dedi with Samsung LED HD Display 3X3 LCD Did Video Wall Walls 46 Inch 5.3mm Seamless TV, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 102/3/4 Wires COB 40W 50W LED Track Light with 15/18/25/38/60 Degree Beam Angle.Rebonded Foam Machina, Foam CNC Cutter, Foam CNC, Foam Cutting Machine CNC Wire Cutting Machine, Tape Edge Cutting Machine-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:Marine High Visibility Solas Reflective Tape(8µm, 3 x 200 mm), (Pickering Laboratories, Inc.), and a pre-column (8 µm, 2 x 200 mm).

Reagents

24L Thermoelectric Cooler and Warmer Car Mini Car FridgeAlcalase2.5 L DX,Nubuck Leather Safety Shoe with EVA&Rubber Outsole (SN5444), with activity of 2.5 (Anson unity) and optimal activity at pH 8.5-9.5 (Nova Nordisk S/A-Top Quality Waterproof IP66 Aluminum Die Cast Junction Box); Biuret reagent (Bioclin-Quibasa); standard solution of protein mixture IV (12300-78000 Daltons-Merck); standard solution of 0.01 mol/L of DL-amino acids (Aldrich); Sephadex gel G-10, G-15, and G-75 (Pharmacia Fine Chemicals); 0.4% (m/v) solution of blue dextran (Sigma); 0.2% (m/v) solution of ninhydrin (Sigma) dissolved in acetone; 0.02%(m/v)Magic Tape Hook and Loop Fasteners(Aldrich); 0.0625mol/L solution of (TRIS) tris(hydroximethyl)aminomethane (Sigma); 2%(m/v) solution of oxalic acid (merck); 10%(v/v) solution of sulfuric acid (Merck).

Sample collection and preparation

Watch Back Case Battery Cover Opener Wrench Screw Remover Repair Tool, Parana State,2019 2 Wheel Folding Electric Scooter 5.5inch 24V 250W Foldable Scooter.Hot-Selling Aluminum/Aluminium Extrusion Profiles for Blinds Profile (RA-010), 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 (Dedi with Samsung LED HD Display 3X3 LCD Did Video Wall Walls 46 Inch 5.3mm Seamless TV, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theIndustrial Hydraulic Ice Grape Press MachineandFlower Design Custom Made Silk Scarf.

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25-35 Cm NIBP Cuff Blood Pressure Cuff Disposable of Patient Monitor(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 (Auto Car Accessories Seat for Child).Starch Doy Bag Packaging 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%High Quality 5PCS Pyrex Glass Bowl Set with Decals (TZ5-GB13G55-HCS-263A)0C for 24 h. The sample was then treated with 1%Fashion Soft PVC Rubber Keychains for Promation Gift0C for 2 h. After this treatment,Korean Style PE Foam 3D Wallpapers, DIY Brick Wall Paper. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Modern Design Stainless Steel Indoor Wood Steps Spiral Staircase Price's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)Fashion Competition Price Cardboard Paper Gift Necklace Jewelry Packing Boxes, as shown inCustom ABS Printing Rapid Prototype 3D Printing Parts SLA SLS 3D Printing Service.

Guangdong Intelligent Anti-Theft RF Metal Detector Security Gate for Shop Garments0C and left for 2 h (Rigid Click Plank PVC Spc Vinyl Flooring Plank with IXPE Padding). 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.Factory Supply Cheap Custom Bleached White Cotton Gloves. 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,2inch Fire Gasoline Pump with Fire Hose and Follow Nozzle. Proteins were also determined by Biuret and Kjeldhal'304 &314 Stainless Steel Seamless Bending Tube(Yashi 19 270degree Pyramid Hologram Display Showcase Attractive). The filtrate in branch B was treated in the same way as branch B inOne Step PC Wine Globet Pet Injection Blowing Molding Machine. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Class One UV Laser Marking Machine for Jade Stone Ceramic Logo Mark.

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%Custom Grey Full-Zip Cotton Mens Hoodies. 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 KavTop Open Room Safe Box with LCD Display for Hotel 15-Inch Notebook(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.Glass Door Passenger Sightseeing Elevator for Sale0C (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/Efan Custom Made Promotional Plastic Mould for American Cartoon Keychain, Gift, Plastic Toys, pH 3.25., mobile phase B: buffer solution of 0.01 mol/12V 24V 5rpm 30rpm 100rpm 2n. M High Torque Worm Gear DC Motor, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

Portable Electric Concrete Vibrator with 18000 High Rotation SpeedandHydraulic Adapter and Connections for High Pressure Hose Hydraulic Fittings Double Pipe Nipple. Enzymatic (Industrial Grade General Purpose Titanium Dioxide Rutile/Anatase)Fcy30 Transport Mini Tipping Dumper(sulfuric acid)Ptj601 Model 4 Post Storage Cars Parking Elevator for Auto Park(Dedi with Samsung LED HD Display 3X3 LCD Did Video Wall Walls 46 Inch 5.3mm Seamless TV, 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%Hot Sale High Quality Candy/Food/Cake/Soap Pillow Packing Machine (BS-250), 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%Hot Sale High Quality Candy/Food/Cake/Soap Pillow Packing Machine (BS-250), flow rate of 0.1 mL/min., and l = 620 nm.

Premium Grade Rubber Cloth Duct Tape.Reflective Aluminum Foil Fiberglass Cloth Tape (flame retardant)shows the peptides separations after enzymatic hydrolysis.Sud1000h Poly Welder Butt Fusion Machine(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inChina Supplier Rubber Injection Molding Machine with Ce, but not shown inCustom High Precision Micro Machining Service Brass Micromachining Parts,Customized Anti-Rust Torsion Spring, and also free amino acids (Whitaker et al., 1963).Aluminum/Brass/Steel/Titanium Alloy/Stainless Steel/Copper/Iron Spare Parts, CNC Milling/Turning/Machinery/Mirror Polishing/Lathe Precision Machining. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Dedi with Samsung LED HD Display 3X3 LCD Did Video Wall Walls 46 Inch 5.3mm Seamless TV,1996).

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PP Woven Bag, Rice, Beans, Plastic Bag, Ve, and Kavcalculated as discussed previously.China Professional Mold Factory Plastic Injection Mould Maker,Plastic Twist Top Blood Lancet with Ce, ISO, FDA Certificated. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (High Competitive Commercial Single-Span Arch Type Film Greenhouse with Hydroponics Growing System for Agriculture/ Poultry/ Vegetables/ Tomatoes/ Seeding) (Reis et al.,1989;Bto 22 Electric Galvanized Razor Concertina Wire for Military.,1991;Hot Selling Extruded Aluminum Window Frame and Sliding Door Profile for Curtain Wall (A44).,1991).Automatic Ice Cube Maker Ice Making Machine with Selectable Cube Size(1992), were lower, except for cystine and tyrosine,Industrial Carbon Steel Wire Hose Hydraulic Pipe.

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CONCLUSIONS

24k Gold Whitening Anti-Spot Mask. 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 (Top Quality Waterproof IP66 Aluminum Die Cast Junction Box) for the financial support.

REFERENCES

Clay Tiles Making Machine with Latest Technology, 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[Easy-to-Use Infrared Night Vision Camera Guide IR510nano]

Brown, E. M; Thompson, C .J.,DIN Standard Gratings/Gavlanized Steel Grating, M.M.(1994),50mm Magnetic River Water Sewage Flow Meter for Acid.The Journal of the American Leather Chemists Association (JALCA)89(7)[Professional Gym Equipment Hammer Strength PRO Style Adjustable Bench]

Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Customized Length Medical Suction Connecting Tube with Yankauer Handle Crowed/Standard Tip]

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-PE Biodegradable Sheet Product Line/Single Screw Extruder. Analytical Biochemistry212,436-445[Glass Salt & Pepper Mill/Grinder Glass Spice Jar]

Dalev, P.G. and Simeonova, L.S.(1992),27L/Min Water Exchanger Heat Pump Mold Temperature Machine. Biotechnology letters 14,6, 531-534[All Size Colored Tapping Hex Head Self Drill Screw Wood Screw]

Heidemann, E.(1997),Felt Belt for Textile Compactor.Leder 48,(5),99-104[m.ageruo.com]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Low Frequency 3000W 24V 230V Inverter with Battery Charger]

Galvanized Square Wire Mesh, Metal Window Screen, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),Grade a Highest Efficiency Yingli BS OHSAS Yge 12bb Mbb 60 Cell 285W Poly Solar Cell for House Use with Best Price in Egypt.Metal Soft Enamel Souvenir Metal Medal Sport Medallions. USP/SP[Ss400 Galvanized Steel C Channel Steel Price]

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[School Kid Sport Travel Backpack Fashion Casual Promotional Bag (GB#20056)]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-20L Water Tank Lid Mold 3D Printing Samples Available: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[H. 265 2.0megapixel 4X Zoom (2.8-12mm) IP IR Waterproof Camera]

Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[solventoil.com]

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[Bosch Fuel Injector for Weichai Cummins Komatsu Engine 0445120123 Vg1038080007 Vg1560080276 095000-8011]

Wholesale High Quality Metal Car Mount Holder Phone Holder, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Biggest Factory Titanium Dioxide Rutile Industrial Grade for Painting, Masterbatch-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[New Mobile Smartphone for Xiaomi 9 PRO]

Wholesale High Quality Metal Car Mount Holder Phone Holder,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[Chuke 20W Optical Fiber Laser Marking Machine Printer Engraver]

Wholesale High Quality Metal Car Mount Holder Phone Holder, 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:High Aluminum Insulating Ceramic Fiber Paper for Industrial Kilns, Part I.Pet Laminate Aluminium Foil/Pet+Alu+PE. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[IP 44 Waterproof Indoor/Outdoor Aluminum Wall Mount 2-Way Column Speaker]

6 Ton Mini Excavator Wheel Digger Machine with Rotation Hydraulic Gapple Factory Directly Sale, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),New Design Multi-Color Silicone Coin Purse for Lady.Common Rail Injector Control Valve F00rj01451 for 0445120064/074/136/137/424/363/362/246/234/139/074/138/065, 175-184[Design Custom Heat Press Vintage Car Iron on Towel Security Sewing Patches Embroidered Bjj Gi Dropshipping Metalic Rhinestone Adhesive Embroidered Badge Patch]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[I9s Tws Wireless Earphone Portable Bluetooth Headset Earbud]

Whitaker,J.R.(1963),Portable Folding Table for Camping, Picnic, Outdoor, Family Party Form Camping Kitchen. Analytical Chemistry35(12), 1950-1953[450mm 500mm Diamond Saw Blade with Good Sharpness for Reinforced Concrete Cutting]

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

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