Effects of Citric Acid on the Viscoelasticity of Cornstarch Pastes MADOKA HIRASHIMA‚ RHEO TAKAHASHI‚ AND KATSUYOSHI NISHINARI* Department of Food and Human Health Sciences‚ Graduate School of Human Life Science‚ Osaka City University‚ Sumiyoshi‚ Osaka 558-8585‚ Japan The effects of citric acid on the rheological properties of cornstarch pastes were studied by steady shear and dynamic oscillatory viscoelasticity‚ intrinsic viscosity measurements and microscopic observation. The pH of cornstarch
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Omeprazole is an off white coloured crystalline powder which is freely soluble in ethanol‚ methanol and partially soluble in water. The active ingredient comes from a chemical class named benzimidazole and is broken down as: 5-methoxy-2-[[(4-methoxy-3‚ 5-dimethyl-2-pyridinyl) methyl] sulfinyl]-1H- benzimidazole‚ this compound inhibits gastric secretion. The empirical formula of Omeprazole is C17H19N3O3S‚ it has a molecular weight of 345.42 and has a structural formula displayed below: [pic](Rxlist.com‚
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SEMI – MICRO QUALITATIVE ANALYSIS OF SIMPLE INORGANIC SALT _______________________________________________________________ CATIONS: Pb2+ ‚Hg2+ ‚Cu2+ ‚Cd2+ ‚ Ag+ ‚ Fe2+ ‚ Fe3+ ‚ Al3+ ‚ Zn2+ ‚ Mn2+ ‚ Co2+ ‚ Sr2+ ‚ Ba2+ ‚ Mg2+ ‚ NH4+ ANIONS: CO32- ‚ S2- ‚ SO32- ‚ SO42- ‚ NO2- ‚ NO3- ‚ Cl- ‚ Br2- ‚ PO43- ‚ CH3COO- _______________________________________________________________ PRELIMINARY TESTS 1. Note the state (amorphous or crystalline) and colour of salt. 2. Test the solubility of the salt in
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A Basic Guide to Cosmetic & Toiletry Development John Woodruff john.woodruff@creative-developments.co.uk 1 A Basic Guide to Formulating Cosmetics & Toiletries What is a cosmetic? Understanding product briefs From concept to product formulation Sources of information EU cosmetic regulations The global marketplace Cost effective formulation Product stability & preservation Example formulation techniques john.woodruff@creative-developments.co.uk 2 A Basic Guide to Formulating
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Richard F. Daley and Sally J. Daley www.ochem4free.com Organic Chemistry Chapter 2 Introduction to Organic Nomenclature and Functional Groups 2.1 Drawing Organic Structures 73 2.2 Alkanes 77 2.3 Structural Isomerism 77 2.4 IUPAC Nomenclature 79 2.5 Naming Alkanes 80 2.6 Naming Cycloalkanes 87 2.7 Naming Complex Alkyl Groups 2.8 Functional Groups 97 2.9 Naming Alkenes and Alkynes 2.10 Naming Alkenes‚ Part II 108 2.11 Arenes 109 2.12 Organohalogens 113 2.13 Using Molecular
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Introduction The atmosphere is considered as a great cover that guards the earth’s surface from the full solar radiations during daytime and prevents excessive losses of heat during nighttime. The atmosphere provides a sustaining livable temperature on the planet by maintaining the heat balance of the earth. However‚ humans disregard the atmosphere through activities that contribute in polluting the surrounding. In order to prevent and minimize the air pollution‚ it is essential to understand the
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Chemistry Salt Analysis Cheatsheet Version 2.0 © 2008 Ankur Banerjee All Rights Reserved. Only important stuff for CBSE Class 12th Chemistry practical syllabus has been included‚ not everything. 2. WE + acidified K2Cr2O7 2 = sol 3 turns green 3. WE + acidified KMnO4 = pink colour of KMnO4 is discharged 4. Sulphide: Colourless gas with a smell of rotten eggs (H2S); turns lead acetate paper black 1. Sodium nitroprusside test: WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate
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The antibacterial activity of the green synthesized silver nanoparticles from aqueous extract of Gum of fresh Coconut was tested by the disc diffusion method against an antibiotic‚ ampicillin(1µg/µl) as a standard drug. The antibiotic resistant bacteria viz.‚ Staphylococcus aureus‚ Bacillus subtilus‚ Escherichia coli and Klebsiella pneumonia were used for the measurement of antibacterial activity‚ and the plates were incubated at 370C overnight to know the zone of inhibition. 2.2. Cell Culture and
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3090 3090▌ SHORT REVIEW Reaction of Diazo Compounds with Organoboron Compounds short review Huan Li‚ Yan Zhang‚ Jianbo Wang* Reaction of Diazo Compounds with Organoboron Compounds Abstract: The transition-metal-free reactions of diazo compounds with organoboron compounds are reviewed. This type of reaction provides an alternative approach for the formation of C–C‚ C–B‚ and C–Si bonds. Moreover‚ by using tosylhydrazones as diazo compound precursors and boronic acids/esters as the
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Materials and methods Chemical and immunochemicals Daidzin (DZ‚ ≥99%)‚ daidzein (≥97%)‚ and glycitein (≥95%) were purchased from Fujicco Co. (Kobe‚ Japan). Genistin (≥98%) and genistein (≥98%) were obtained from Wako Pure Chemicals Industries (Osaka‚ Japan)‚ while puerarin (≥98%) and glycitin (≥99%) were obtained from Tokyo Chemical Industry Co. (Tokyo‚ Japan) and LC Laboratories (MA‚ USA)‚ respectively. Ovalbumin (OVA‚ ≥98%) was purchased from Sigma-Aldrich (Steinheim‚ Germany). Horseradish peroxidase
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