cytasen.

1895 W. Jago Bread-making 123 The enzyme, which thus dissolves the parenchymatous cell-walls of the endosperm, has received the name Cytase. Cytase is secreted by the embryo during germination.

1899 J. R. Green Soluble Ferm. vii. 88 The existence of cytase has not been known for many years, our acquaintance with it dating back only to 1886, when it was discovered by De Bary.

1901–5 Jrnl. Exper. Med. 6 282 Two principles are concerned in lysis... One..is the product of immunization... The other is normally present in the body juices... This latter principle, on account of the complemental nature of its action, they [sc. Ehrlich and Morgenroth] propose to call the ‘complement’... This body is called ‘alexin’ by Bordet, and probably agrees in part with the body of the same name described by Buchner. Metchnikoff calls it ‘cytase’.

1903 Med. Rec. 14 Feb. 249 [Bordet and Ehrlich] recognize the importance of an association of the amboceptor as a condition for the effective action of the complement (cytase).

1938 E. C. Miller Plant Physiol. (ed. 2) xi. 802 The cytases are destroyed at a temperature of 60°C. or above.

1956 New Biol. 21 12 The secretion of enzymes (cytases) attacking the cell walls of the endosperm.

1962 W. O. Howarth & L. G. G. Warne Lowson's Textbk. Bot. (ed. 13) ii. 32 When the seeds. e.g. of lupin and date, germinate, an enzyme, cytase, hydrolyses the hemicellulose, forming sugars.

1899 J. R. Green Soluble Ferm. xxi. 371 Bacillus mesentericus vulgatus has been shown to be possessed of diastasic, inverting, cytasic, and peptonising power.