. Determination of the active principles of medicinal plants. Medicinal plants; Theses. the 162. It is possible to combine the use of ferric chloride (Lloyd), or of lead acetate with that of saw-dust or otner absorbent. The ferric chloride is to be added to fluid extract before it is mixed with the solvent. It may be necessary to add a little more ammonia than that contained in the prollins mixture:. There must be enough to decompose both alkaloidal salts and the iron or lead compound* 163. Absorbent cotton is used by P. B. haynale; in the following manner:- Pack somewhat firmly in the bottom
. Determination of the active principles of medicinal plants. Medicinal plants; Theses. the 162. It is possible to combine the use of ferric chloride (Lloyd), or of lead acetate with that of saw-dust or otner absorbent. The ferric chloride is to be added to fluid extract before it is mixed with the solvent. It may be necessary to add a little more ammonia than that contained in the prollins mixture:. There must be enough to decompose both alkaloidal salts and the iron or lead compound* 163. Absorbent cotton is used by P. B. haynale; in the following manner:- Pack somewhat firmly in the bottom of a four ounce round wide-mouthed- prescription vial, two grams of absorbent cotton. Into the center of this, place by means of a pipette, 10 (or a smaller quantity, if rich in alkaloid) of the fluid extract, When this is complete ly absorbed by the cotton, add a 100 of Prollins mixture modified (13) and shake occasionally during half an hour. Then take out an aliquot part, of tne ethereal fluid end treat as in (52) or (72). 164. Kebler, as a routine process, adds to x2 oi the fluid extract12 of water, adds 30 rams chloroform, 90 ^rams ether, shakes, aids ammonia in excels, shake fre- quently during'30 minutes , then takes 50 grams, equivalent^ to 5 c".c. of the fluid extract and extracts the alkaloids in the usual way. â 165. Routine of proce ug of J. (149 h) . Put into a separator, 10 of the fluid extract (25 of the tincture) which should contain about 50^ (by volume) of alcohol, aid 1 of a 33$ solution of sodium hydrate and 50 of etner and shake well five idnutes and let separate. Draw off the aqueous fluid into a two ounce vial, add to the contents of 3 of water, shake, let separate and draw off the water into the vial, shake out the contents of the vial twice with etner containing 10,, of alcohol (25 each time). The firs portion is shaken into a second vial with of water and
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmedicin, bookyear1901
