01381naa a2200229 a 450000100080000000500110000800800410001902400510006010000210011124500960013226000090022852007470023765000110098465000110099565000090100665000130101565000140102865000140104265000180105665000100107477300670108421643712024-05-21       1973    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1017/S00220299000147952DOI1 aMORRISSEY, P. A.  aThe N-acetyl neuraminic-acid content of the milk of various species.h[electronic resource]  c1973  aAverage N-acetyl neuraminic-acid (NANA) content of milk from cow, sheep, goat, mare, donkey and sow (about 10 samples from each species) was 17·7, 10·1, 6·4, 6·1, 12·0 and 64·0mg/100 ml, of which 14·2, 8·4, 3·2, 3·1, 5·0 and 53·7mg/100 ml respectively was in the casein fraction. The NANA content of casein showed marked species variation ranging from an average of 2·18 % for the sow to 0·09 % for the goat. About 28 % of the casein NANA of mare's milk was liberated in the fraction soluble in 12 % TCA by the action of rennin at pH 6·6 compared with 75 and around 100 % for donkey's and sow's milk respectively; about half the total NANA in the casein of cow's, sheep's and goat's milk was released under the same conditions.  aCasein  aCattle  aCows  aEwe milk  aGoat milk  aMare milk  aMilk proteins  aSheep  tJournal of Dairy Researchgv. 40, n. 3, p. 221-225, Oct. 1973.