papainn.
/pəˈpeɪɪn/, /pəˈpʌɪɪn/, U.S. /ˈpæpˌeɪn/ Biochemistry.
A proteolytic enzyme present in the unripe fruit and latex of the papaya, Carica papaya, and used esp. as a meat tenderizer, in clarifying drinks, and as a food supplement to aid digestion; a preparation containing this enzyme.
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the world > matter > chemistry > organic chemistry > enzymes > [noun] > enzymes in fruits > enzymes from pawpaw
papayotin1879
papain1880
the world > health and disease > healing > medicines or physic > medicines for specific purpose > preparations treating or preventing specific ailments > [noun] > for indigestion > plant-derived
cardamom?c1425
sweet nasturtium1712
hydrastis1861
papain1880
1880 Chem. News 42 741/1 An account of..papaine, the active principle of the juice of Carica papaya. As regards its action upon albuminoid matter papaine approaches the pancreatic ferment.
1881 Jrnl. Chem. Soc. 40 59 Papain of another composition is also obtained by mixing the sap obtained from the fruit with water to form a pulp.
1885 Bull. Torrey Bot. Club 12 122 Owing to the interest that has recently sprung up in Europe regarding the chemical action of this fruit, a large demand has risen for the dried juice and the commercial papain.
1919 Bot. Gaz. 67 515 The addition of papaine to yeast juice destroyed the catalase and zymase.
1943 Sumner & Somers Chem. & Methods of Enzymes 158 The impure papain of commerce is a mixture of two distinct enzymes.
1963 Daily Tel. 14 June 17/6 British meat traders are concerned about the use of papain, an enzyme preparation, injected into animals before they are slaughtered, to produce artificially tenderised meat.
1972 Materials & Technol. V. xix. 700 Papain is a relatively small enzyme, with a molecular weight of 21 000 and an isoelectric point of 8·75.
2003 Courier Mail (Brisbane) (Nexis) 14 Oct. 4 Pineapple..contains an enzyme called bromelin which reacts in a similar way that the enzyme papain does in papaya.
This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).
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n.1880