The Analysis and Adulteration of Foods; Tea, Coffee, Cocoa, Sugar, &C

The Analysis and Adulteration of Foods; Tea, Coffee, Cocoa, Sugar, &C

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. Excerpt: ...and thin-sided cells. Those composing the bark or skin are somewhat angular, as seen at D. Chicory is free from starch. The size of the dotted tubes, the peculiar appearance of the FIG. 15.--MANGOLD WURZEL. (a) Pitted tubes magnified 65 diameters. (b) Cellular tissues 150, (c) Skin 50, joints, and the presence of the laticiferous vessels, afford a ready means of distinguishing chicory from the other root adulterants. Dandelion root has a structure somewhat similar to that of chicory, but the pitted tubes of the former are narrower and more regular, and the laticiferous vessels more abundant and better defined than the corresponding tissues of the latter. Mangold Wurzd.--The microscopic appearance of the tissues composing mangold wurzel is shown in Fig. 15. The pitted tubes represented at a are very abundant and large. Many of them have blunt oblique ends, and on trituration they break up into shorter tubes which terminate obtusely. The cells of the tissue shown at B are larger than those of chicory; they are very transparent and thin-sided, possessing little cohesion, the slightest trituration causing them to separate. The cells composing the outer skin are angular. FIG. 16.--TURNIP. Tissues of Turnip, magnified 150 diameters. The absence of laticiferous tissue and the size of the cells serve to distinguish mangold wurzel from chicory. Like the latter, however, mangold wurzel is free from starch. Turnips.--The turnip when roasted and ground presents the appearance shown in Fig. 16. It is composed of cellular, pitted, and woody tissues. The first two of these are very similar to the corresponding structures in mangold wurzel, except that the cells are more irregular in size, and have no tendency to separate, but hold together with considerable...show more

Product details

  • Paperback | 28 pages
  • 189 x 246 x 2mm | 68g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236518063
  • 9781236518064