tomatinen.
/ˈtɒmətiːn/, U.S. /ˈtɑməˌtin/ Biochemistry.
An alkaloid glycoside containing a steroidal and a tetrasaccharide component, present in the stems and leaves of the tomato plant and some other members of the family Solanaceae, and having cytotoxic activity, esp. against fungi.Chemical formula: C50H83NO21. The distinction made in quot. 1948 between tomatine and tomatin was not generally adopted.
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lycopersicin1945
tomatine1946
1946 Jrnl. Bacteriol. 52 601 Inasmuch as it has since been learned that the term ‘lycopersicin’ was once used..as a synonym for ‘lycopene’, the red pigment of the tomato, the designation of the antibiotic agent has been changed to ‘tomatin’ to avoid possible confusion.
1948 Arch. Biochem. 16 399 The crystalline compound has very low antibacterial activity..and is designated tomatine to distinguish it from the crude or partially purified tomatin.
1959 H. Martin Sci. Princ. Crop Protection (ed. 4) ii. 19 Although tomatine effectively inhibits the growth of F[usarium] lycopersici in pure culture.., no direct evidence has been obtained that it is responsible for wilt resistance.
2015 Sunday Mail (Queensland) (Nexis) 13 Sept. (Body & Soul section) 4 A species of wild tomato in Peru that can contain 166 times as much bitter tomatine as the varieties we find in our supermarkets.
This entry has been updated (OED Third Edition, January 2018; most recently modified version published online March 2022).
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n.1946