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SURFACE VISCOSITY AND GUSHING
Author(s) -
Gardner R. J.
Publication year - 1972
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1972.tb03467.x
Subject(s) - viscosity , surface (topology) , chemistry , solid surface , materials science , chemical physics , composite material , mathematics , geometry
Surface viscosity correlates qualitatively with gushing induced by a standard gushing test. Substances which provoke gushing cause a large increase in surface viscosity when they are added to beer. Conversely, the very high surface viscosities induced by gushing agents fall to normal or intermediate values when anti‐gushing agents are added. High surface viscosity does not ‘cause’ gushing, but appears to be a frequent concomitant of the existence of stable nuclei. These observations support a hypothetical mechanism which suggests that anti‐gushing agents should be extremely surface‐active but incapable of forming a solid‐condensed surface film.