Results 241 to 250 of about 9,070,916 (291)

Surface–Active Compounds from Microorganisms

Nature Biotechnology, 1992
Microbial surfactants are a structurally diverse group of compounds consisting of hydrophilic and hydrophobic domains and which partition preferentially at interfaces. Biosurfactants are of increasing interest commercially as substitutes for synthetic surfactants particularly for environmental applications. This article discusses recent progress in the
G, Georgiou, S C, Lin, M M, Sharma
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Surface activity of a non-micelle forming compound containing a surface-active impurity

International Journal of Pharmaceutics, 2007
The purpose of this study is to characterize the surface activity of a water-soluble compound and its ability to form aggregates/micelles.Aqueous solutions of the compound were prepared at various concentrations. Surface tension was determined using drop volume and Wilhelmy plate methods.
Ahmad, Al-Maaieh, Aktham, Aburub
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Effects of surface active compounds on thermal denaturation of DNA

Journal of the American Oil Chemists' Society, 1977
Abstract and SummaryThe interaction of surface active compounds (including N‐lauroyl amino acids) withself thymus DNA in aqueous solutions has been studied by measurements of the melting temperature of the DNA. The results suggest that the surface active nature of these additives is not the primary factor governing the interaction with DNA, but their ...
K, Tsuji, F, Tokiwa
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Effects of Surface-Active Compounds on the Demineralization of Dental Enamel

Caries Research, 2009
Slices of bovine enamel and intact human enamel were treated with (a) a two-step treatment consisting of phytate followed by hexadecyl amine, or (b) 2–O-stearoylglycerol-1,3-diphosphate (Glydip), or (c) phosphatidic acid. The effect of these agents on the rate of caries lesion formation and on the permeability of dental enamel was quantitatively ...
J M, Borggreven, F C, Driessens, T H, Hoeks, B, Zwanenburg   +3 more
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The Influence of Corticosteroids on Antibacterial Activity of Surface Active Compounds

Chemotherapy, 2009
In vitro, antimicrobial activity of dodecyl-di(β- hydroxyethyl)-benzene ammonium chloride (DOBAC) and dodecyl-triphenyl-phosphonium bromide (DTPB), two surface active compounds, was tested in the presence of corticosteroids in doses which have been shown to enhance metabolic activity of bacteria.
W, Raab, J, Windisch
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Effects of surface-active agents on the crystallinity of Carbowax compounds*

Journal of the American Pharmaceutical Association (Scientific ed.), 1949
“Carbowax” 4000, a water-soluble waxlike compound, is a useful ingredient in washable ointment bases. The texture, unctuousness, and smoothness of the “Carbowax” containing base depend upon the degree of fineness of the crystals of “Carbowax.” Several factors affect the size and form of crystals.
M V, NADKARNI, D B, MEYERS, L C, ZOPF
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Biological surface-active compounds from marine bacteria

Environmental Technology, 2015
Surface-active compounds (SACs) are widely used in different industries as well as in many daily consumption products. However, with the increasing concern for their environmental acceptability, attention has turned towards biological SACs which are biodegradable, less toxic and more environmentally friendly.
Nga Phuong, Dang, Bjarne, Landfald, Nils Peder, Willassen   +2 more
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Surface-Active Compounds from Microorganisms

1980
Publisher Summary This chapter discusses the metabolites produced by microorganisms, which demonstrate surface activity. It focuses on systems in which the metabolite has been characterized and shown to be surface active. The examples of biosurfactant modification, usually by substrate manipulation are also reviewed.
D.G. Cooper, J.E. Zajic
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ChemInform Abstract: SURFACE‐ACTIVE ORGANOTIN COMPOUNDS

Chemischer Informationsdienst, 1982
AbstractAuf den im Formelschema angegebenen Wegen werden oberflächenaktive, trialkoxysilylierte Organo‐Zinnverbindungen wie (III), (VII), (VIII), (XI) und (XIX) hergestellt.
H. SCHUMANN, B. PACHALY
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Comparing the surface activities of compounds using an elemental adsorbate

Journal of Physics D: Applied Physics, 1997
It has been proposed that the interaction of a substrate with a suitable elemental adsorbate can be used to monitor its surface chemical activity. If the extent of adsorbate - substrate interaction can be measured by a surface chemical probe such as x-ray photoelectron spectroscopy, one could compare the surface activities of a variety of solids by ...
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