zwitterionic


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zwit·ter·i·on·ic

(tsvit'ĕr-ī-on'ik),
Denoting a substance with the properties of a zwitterion; for example, at pH value of 6.11, alanine is zwitterionic.
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Substantial solubilization of mAChR has been achieved also using zwitterionic detergents such as CHAPS and CHAPSO [8, 22], but the yields of the active receptors remained usually below the yield obtained with effective non-ionic detergents [18].
Apart from N-(2-acetimido)-2-iminodiacetic acid complexing calcium and bis(2-hydroxyethyl)aminotris(hydroxymethyl)methane, which inhibits the indicator enzyme (like all amino-type buffers), equal reaction rates of pancreatic amylase were measured in zwitterionic buffers and collidine; however, the rates were 10% lower in phosphate (Table 2).
dependent transport of basic, zwitterionic, and bicyclic amino acids by a broad-scope system in mouse blastocysts.
Effect of bovine serum albumin and zwitterionic buffers on stored liquid boar semen.
Researchers at McGill University in Montreal, Montana State and Medtronic collaborated to test the effectiveness of pressurized irrigation with the citric acid zwitterionic surfactant irrigating solution.
of a second alcohol ethoxylate nonionic surfactant; one or more further surfactants selected from amphoteric or zwitterionic surfactants, but which expressly exclude cationic surfactants; an organic solvent constituent; alkanolamine; and acid constituent which comprises a ternary acid system comprising each of sulfamic acid, formic acid and oxalic acid in a respective weight ratio of sulfamic acid:formic acid:oxalic acid of 1-8:1-5:1-3; optionally one or more further constituents which are directed to improving one or more aesthetic or functional features of the composition; and water.
As a small zwitterionic molecule, it is able to increase the number of electrostatic bonds/interactions within the hair shaft, which leads to an increase of hair's tensile strength.
It is comprised of an anionic surfactant selected from the group consisting of sodium lauryl sulphate, sodium lauryl ether sulphate, ammonium lauryl sulphate and ammonium lauryl ether sulphate; an amphoteric or zwitterionic cosurfactant; water; and a hair substantive polymer.
Homogeneity of permanent waving and natural feel of the hair can be imparted by including the zwitterionic polyurethane-39 (for example Merquat 3330) in the reducing part of the perming composition.
Comments: Novethix L-10 polymer is a highly efficient hydrophobically modified alkali-swellable emulsion polymer (Hyper-HASE) designed for structuring most cleansing formulations containing anionic, nonionic and zwitterionic suffactants.
They can also be tuned to have hydrophobic, cationic, anionic, zwitterionic and hydrophilic nature depending on selection of the starting materials and the nanophase separation.
A highly efficient, hydrophobically-modified, alkali-swellable emulsion polymer designed for structuring most cleansing formulations containing anionic, nonionic and zwitterionic surfactants, Novethix L-10 polymer is also a cost effective improvement over many nonionic thickeners.