Stable silk protein fragment compositions
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United States of America Patent
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Dec 6, 2016
Grant Date -
Jan 28, 2016
app pub date -
Oct 7, 2015
filing date -
Sep 30, 2013
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Abstract
A composition is disclosed that includes pure silk fibroin-based protein fragments that are substantially devoid of sericin, wherein the composition has an average weight average molecular weight ranging from about 17 kDa to about 38 kDa, wherein the composition has a polydispersity of between about 1.5 and about 3.0, wherein the composition is substantially homogeneous, wherein the composition between 0 ppm to about 500 ppm of inorganic residuals, and wherein the composition includes between 0 ppm to about 500 ppm of organic residuals.
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