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Levans. II. Light‐scattering and sedimentation data of Streptococcus salivarius levan in water
Author(s) -
Stivala S. S.,
Bahary W. S.,
Long L. W.,
Ehrlich J.,
Newbrun E.
Publication year - 1975
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.1975.360140616
Subject(s) - streptococcus salivarius , chemistry , sedimentation , radius of gyration , light scattering , particle (ecology) , scattering , analytical chemistry (journal) , crystallography , chromatography , streptococcus , polymer , physics , optics , bacteria , organic chemistry , geology , geomorphology , paleontology , oceanography , sediment
The molecular weights and radii of gyration of Streptococcus salivarius levan fractions were obtained from light‐scattering measurements in water. Sedimentation coefficients and partial specific volumes of the fractions were also obtained. Double logarithmic plots of [η] versus M̄ w and S 0 versus M̄ w yielded slopes having values of 0.17 and 0.62, respectively. The data and various calculated parameters show that levan from Streptococcus salivarius is highly branched and behaves hydrodynamically as a compact particle of spherical symmetry.