| 释义 |
pectose Chem.|ˈpɛktəʊs|
[f. stem pect- of pectic + -ose.]
An insoluble substance related to cellulose and occurring with it in vegetable tissues, esp. in unripe fruits and fleshy roots; by the action of acids, etc. it is converted into pectin.
1857W. A. Miller Elem. Chem. III. 83 The cellular tissue of many fruits, and of turnips, carrots, parsnips, &c., contains a substance which he [Frémy] terms pectose, and which is quite insoluble in water, alcohol, and ether. 1866–77Watts Dict. Chem. IV. 363 Pectose..gives the hardness to unripe fruits. It is probably isomeric with cellulose, or differs from it only by the elements of water.
Hence pectosic |pɛkˈtɒsɪk| a., in pectosic acid, an acid formed immediately from pectin by the action of pectase or alkalis, and converted by further action of the same into pectic acid.
1866–77[see pectous]. |