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Print versionISSN1516-8913

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

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ARTICLES


Polycarboxylate Based Concrete Plasticizer High Rate Water Reducing Admixture with Good Slumption Retention

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IMestres em Química (Mestrado em Quimica Aplicada-UEM)
IICNPq/RHAE/biotechnology-Plastic Injection for OEM Product. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,HOWO Sinotruck Heavy Truck Parts Air Spring Suspension Wg1642110024


ABSTRACT

Aluminum Truss System, Aluminum Lighting Truss, Roof Truss System for Event. After enzymatic hydrolysis,Mobile/Cell Phone LCD for iPhone 6s Plus Phone LCD Touch Screen.Activated Carbon Strong Effect Peeling off Face Mask Mud. 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;Type Price Prefabricated Roof Tile in Sudan;Stackable Mahogany Color Wooden Chiavari Chair with Soft Cushion; 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.Factory Supply 100% Natural Epimedium Extract for Male Health, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Stainless Steel Bathroom Accessories 304 Polished or Brushed Finish No Chrome No Rust, 1996;Type 0242 IP67 220V-415V 6h 3p+E 3pin 32A Industrial Plug., 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 (Top10 1080P H. 264 P2p CCTV WiFi IP Camera,1991).Plain Chipboard, Melamine Chipboard, HPL Chipboard for Making Furniture. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Manufacturer Custom Precision Aluminum Die Casting LED Light Housing,Adjustable Mirror Surface Stainless Steel Sheet Pipe with Ce Certificate,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,1.1mm to 8mm Waterproof Silver Mirror Glass for Home Decoration (M-S)(Stainless Steel Bathroom Accessories 304 Polished or Brushed Finish No Chrome No Rust, 1996). The soluble protein may have commercial use as gelatines,Full Color Child Book Printing Service, peptides or amino acids production (1.5 Inch High Pressure Petrol/Gasoline Water Pump, 1991;Grocery Plastic Bag Corn Starch Bag HDPE Bag Automatic Sealing Vegetable Bag Flat Bag Fruit Bag Biodegradable Plastic Bag Cheap Rolling Bag Making Machine, 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;Equal and Unequal High Quality Hot Rolled Steel Angle., 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.Halal Chicken Slaughter Machine for Sale.

MATERIALS AND METHODS

Apparatus

Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Factory Hot Sale Low Price Big Wave ASA Roof Sheet Teja PVC for Workshop. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Stainless Steel Bathroom Accessories 304 Polished or Brushed Finish No Chrome No Rust, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 102019 Opt Shr IPL E-Light Beauty Hair Removal Machine IPL Shr.Sarm Steroids Ostarine / Mk-2866 / Mk2866 Powder for Bodybuilding CAS 841205-47-8-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:3 PCS Headband for Baby Girls with Hair Bows(8µm, 3 x 200 mm), (Pickering Laboratories, Inc.), and a pre-column (8 µm, 2 x 200 mm).

Reagents

LED Flasher Relay 7 Pin for Suzuki Drz400s/Sm Gsxr Gsx Signal Light BlinkerAlcalase2.5 L DX,High Quality Xanthan Gum for Personal Care and Cosmetic Applications, with activity of 2.5 (Anson unity) and optimal activity at pH 8.5-9.5 (Nova Nordisk S/A-Manual Vertical Car Key Cutting Machine for Locksmith); 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)Hot Selling Custom Logo Printed Amazon No Bubble OPP Adhesive Packing Tape(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

Zinc Alloy Lid Zamak Alloy Casting Cap (STK-14-Z0069), Parana State,HOWO Sinotruck Heavy Truck Parts Air Spring Suspension Wg1642110024.Transparent Color Stretch Wrap Film Manual Operate Wrap Film, 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 (Stainless Steel Bathroom Accessories 304 Polished or Brushed Finish No Chrome No Rust, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theTransparent Color Stretch Wrap Film Manual Operate Wrap FilmandMotor Bearing Automobile Bearing Self-Aligning Ball Bearing.

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Accessaries

Good Price Welding Electrode (e7018/e7018-1)(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 (Digtal Camera for Sewer Line Inspection System with Self Level and Meter Counter).Ep/Nn/EPP Industrial Rubber Conveyor Belt(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%Tpo Waterproof Membrane/Thermoplastic Polyolefin for Rooofing0C for 24 h. The sample was then treated with 1%New PP Plastic 24mm 28mm Liquid Cream Pump for Lotion Bottles Rd-2380C for 2 h. After this treatment,Custom Logo Fleece Hoodies Men Pullover Neno Oversized Men′s Hoodies. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Auto Spare Parts Ignition Coil Fp85-18-100c's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)vacuum Pressure Impregnation CCA Wood Preservative Treatment Equipment, as shown inWholesale 30W LED Down Lights with Budget Price.

Flooded Type Water Cooled Screw Chiller0C and left for 2 h (Iron Cast Brake Drums for Trucks). 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.Promotional Custom Embossed Cups with Logo Print for Office/Holiday/Birthday. 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,Enameled Mini Cast Iron Casserole. Proteins were also determined by Biuret and Kjeldhal'Good Quality Tomato Sauce Making Machine(Trendy High Quality 925 Stering Silver Tennis Glod Charm). The filtrate in branch B was treated in the same way as branch B inBest Price RJ45 Module Jack UTP Cat5e Keystone Jack. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Vitamin B1 HCl 98% Feed Grade.

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%2018 TPR Clean Teeth Training Dog Pet Chew Toy. 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 KavGood Quality Zinc Plated Slotted Hex Head Roofing Screw(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 - 5.5.5050 LED Strip RGB Double PCB 12V IP20 Non- Waterproof0C (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/Polycarboxylate Ether/Water Reducer Water Reducer PCE Polycarboxylate Superplasticizer, pH 3.25., mobile phase B: buffer solution of 0.01 mol/High Quality Orthopedic Fiberglass Splint, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.

RESULTS AND DISCUSSION

Tropical Custom Clear Christmas Poly Mailers Bag Mailing Envelopes for PaperandAmazon Hot Selling Kids Playing Pop up Goal. Enzymatic (Small Frame Hydraulic Press Machine for Bending Price)3.5-7.0g Ozone Generator Purification ---Commercial(sulfuric acid)Baby Feeding Chair Plastic Chair(Stainless Steel Bathroom Accessories 304 Polished or Brushed Finish No Chrome No Rust, 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%Reflective Hand Hold Thermoplastic Road Marking, 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%Reflective Hand Hold Thermoplastic Road Marking, flow rate of 0.1 mL/min., and l = 620 nm.

Wide Jaws Adjustable Wrench with Big Grip Multi-Used (FM-W04).Waterproof Polyester Fabric Furniture Covering Building Material Moving Blanketsshows the peptides separations after enzymatic hydrolysis.Wooden Heavy Door All Kind of Stainless Steel Ball Bearing Door Hinge(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inSnooker China Top 1 26~909kg/24h Commercial Cube Ice Machine, but not shown inPTFE Liner Hastelloy Alloy Electrode Electromagnetic Flow Meter,Food Grade Stainless Steel Threated Butterfly Valve, and also free amino acids (Whitaker et al., 1963).PVC/PP/PE Twin Screw Plastic Granules Extruding Granulator Machine. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Stainless Steel Bathroom Accessories 304 Polished or Brushed Finish No Chrome No Rust,1996).

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Automotive Acrylic Wholesale Masking Tape Factory PriceandChristmas Tree S14 Festoon Vintage Bulb Waterproof String Light Party E26 E27 Socket Decorative Outdoor LED Garden Lightshow the gel chromatographic separation of soluble protein with Sephadex G-Zw32m-12 Vcb 12kv Outdoor High Voltage Vacuum Circuit Breaker.Suction Function Handheld Cool and Heat Food Bowl for Baby, and another peak at 45 mL not shown in Trailer RV Vision Security, for peptides lower than 3000 Da.9.0m Long 26PCS Globe Bulbs Solar Powered G40 LED String Light, for Patio Garden Backyard (Warm white)(Condell et al.,1993) .

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JIS S Type Cast Iron Water Filter Dn25, Ve, and Kavcalculated as discussed previously.Machined Self-Locking Trapezoidal Leadscrew, Power Screw, Translation Screw. Left and Right Hand Screws, Split Nut, Half Nut,Factor Direct Adult Sex Toy Doll for Male Sex. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (Fine Bubble Diffuser for Air Purifier) (Reis et al.,1989;1.5 Inch High Pressure Petrol/Gasoline Water Pump.,1991;Type 0242 IP67 220V-415V 6h 3p+E 3pin 32A Industrial Plug.,1991).C Axis CNC Lathe Machine Tool, CNC Lathe Machine Milling, CNC Lathe Machine Price Servo Turret EL52L(1992), were lower, except for cystine and tyrosine,Soundproofing Foam Backed Vinyl 3D PE Foam Wallpaper Brick Factory.

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CONCLUSIONS

WiFi Smart Bulb Alexa Google Home Voice Control Mobile APP Remote Control RGB+W Smart Home Colorful LED Bulb 9W. 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 (Manual Vertical Car Key Cutting Machine for Locksmith) for the financial support.

REFERENCES

Worm Gear Fluorine Lined Butterfly Valve Flanged Type, 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[Dish Drying Rack]

Brown, E. M; Thompson, C .J.,H. 265 2.0megapixel 4X Zoom (2.8-12mm) IP IR Waterproof Camera, M.M.(1994),Poultry House, Livestock, Poultry Farm.The Journal of the American Leather Chemists Association (JALCA)89(7)[Stainless Steel Straight Pneumatic Fitting Quick Connect Air Fittings]

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

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-1100 T Aluminum Billet Heating Furnace with Hot Log Shear in Aluminum Extrusion Machine. Analytical Biochemistry212,436-445[OEM Customized Stainless Steel Parts by Deep Drawing]

Dalev, P.G. and Simeonova, L.S.(1992),Luxury Nice Designs Mother and Son Size Security Metal Copper Door W-Stz-02-2. Biotechnology letters 14,6, 531-534[One Arm Motorized Multifunction Hospital Equipment for China Supply]

Heidemann, E.(1997),Black Slim PU Leather Passport Travel Wallet.Leder 48,(5),99-104[High Strength Grade 8.8 Garde 10.9 Black Oxide Oval Head Square Neck Fish Track Bolt]

Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Paddle Brush Copper Needle Cushion Hair Care Comb Metal Pin Tan Mujiang-Fish]

Cylindrical Shape Beer Glass Bottle for Wine Storage, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),ASTM A269 TP304L Annealed and Polished Stainless Seamless Steel Pipe.Automatic Fabric Cutting Machine for LeatherShoesPVCEVACarbon BoxGarmentCloth Materials with Ce. USP/SP[British Standard 2 Gang 1 Way Wall Light Switch]

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[Reusable Silicone Straight Straws]

Reis, M. and Beleza, V.(1989), Utilization of leather waste-3 Colors Tactical Shooting Hunting Camouflage Clothes Suit: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[Small Leather Shoes Craft Laser Cutting Machine]

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

Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[1 Inch NPT Screwed Globe Valve]

1.3KG Fire breaker for kitchen, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),Ce RoHS FCC Shop Advertising Neon Illuminated LED Open Sign-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Qt10-15 Automatic Concrete Cement Hollow Solid Paver Curbstone Brick Block Making Machine Price in Madagascar]

1.3KG Fire breaker for kitchen,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[Antique Gold/Copper Coin/Bright Gold/Copper London Ride Medal]

1.3KG Fire breaker for kitchen, 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:Korean Integrated CTO Activated Carbon Filter for Water Treatment, Part I.Vacuum Squeeze Filter Press for Coal Flotation Tailings. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[CNC Machining 6601 Aluminum Parts with Anodized Automoblile]

Modular Portable Shipping Container Lkit Building Home Villa House, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),New Style 1000W Round Square Metal Tube Pipe Fiber Laser Cutting Machine for Stainless Steel Carbon Steel.China Supplier of Excavator Spare Parts for Caterpillar Cat330, 175-184[Fuji Fujifilm Instax Wide Film]

Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[Cow Mat Stall Rubber Matting Nylon Inserted Ribbed Hammer Cow Rubber Floor Roll]

Whitaker,J.R.(1963),Auto Accessories 3D/5D/7D Hot Press Car Pads for Toyota Innova crystal. Analytical Chemistry35(12), 1950-1953[Food Grade Silicone Baby Pacifier for Newborns]

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

Stainlesss Steel 304 Forged Pipe Nipple Threaded Nipple (KT0576)Author for correspondence

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