TY JOUR TI Application of ion-exchange chromatography in assessing the biological value of sheep milk proteins KW ion-exchange chromatography KW post-column derivatization KW ninhydrin KW amino acid score KW sheep milk JO Russian Journal of Biological Physics and Chemisrty AU Volnin, A.A. AU Sheraliev, F.D. AU Shaposhnikov, M.N. AU Zaitsev, S.Y. AU Bagirov, V.A. PY 2017 IS 2 PB Federal State Educational Institution of Higher Education Sevastopol State University