Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . agments ofparenchymatous cells and occasional fragments of tracheae; veryfew lignified tissues of the seed-coat, showing the characteristic stonecells which are nearly isodiametric, or irregular, having either straightundulate and strongly lignified walls, marked by simple pores;globules of fixed oil and aleurone grains very few. The powder inwhich seeds are present contains numerous oil globules, and the out
Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . agments ofparenchymatous cells and occasional fragments of tracheae; veryfew lignified tissues of the seed-coat, showing the characteristic stonecells which are nearly isodiametric, or irregular, having either straightundulate and strongly lignified walls, marked by simple pores;globules of fixed oil and aleurone grains very few. The powder inwhich seeds are present contains numerous oil globules, and the outerepidermal cells have reticulated thickenings; the stone cells haveusually undulate walls, which are more or less porous and stronglylignified. Constituents.—The activity of Colocynth is due to at least twoprinciples, one of which is an amorphous alkaloid, and the other isrepresented by the ether and chloroform extracts of the resin. Colo- 656 SCIENTIFIC AND APPLIED PHARMACOGNOSY cynth contains, furthermore, a considerable proportion of cx-elaterm,but apparently none of the physiologically active /3-elaterin. It has,moreover, been shown that the products obtained from colocynth. 3 co o > a 02 S * § P d 03 °J b£ « .a ^ 3 . £ by previous investigators, which were designated colocynthin, colocynthitin, etc., do not represent pure substances, but are mix-tures of a very indefinite nature, and that the amount of glucosidicsubstance in the fruit is extremely small. The substance to which the PEPO 657 name citrullol was originally assigned has recently been shownto consist of a phytosterol glucoside. The seeds contain about 15per cent of a fixed oil.—Power, Jour. Chem. Soc, 1910, p. 99. Pepo.—Pumpkin Seed.—The ripe seeds of Cucurbita Pepo(Fam. Cucurbitacese), a procumbent herb, native of tropical America
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
