Summary: A small lag section has been noticed in the standard curves obtained in the estimation of threonine using Streptococcus faecalis R. An increase in the acetate and phosphate buffers in the basal medium has been found to be advantageous.
Barton-WrightE.C.1946; The microbiological assay of amino-acids. I. The assay of tryptophan, leucine, isoleucine, valine, cystine, methionine, lysine, phenylalanine, histidine, arginine and threonine. Analyst 71:267
RabinowitzJ.C.,
SnellE.E.1947; The vitamin B6 group. XI. An improved method for assay of vitamin B6 with Streptococcus faecalis.
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