Ptomaïnes extracted from Urine in certain Infectious Diseases

1893 ◽  
Vol 19 ◽  
pp. 97-101
Author(s):  
A. B. Griffiths

The author has extracted ptomaïnes from the urine of patients suffering from certain infectious diseases by the following method :— (a) A considerable quantity of urine was made alkaline by the addition of a solution of sodium carbonate, and then agitated with half its volume of ether, (b) The ethereal solution (after standing) was filtered, and agitated with a solution of tartaric acid. The tartaric acid combines with any ptomaïnes present, forming soluble tartrates ; and the solution of tartrates forms the lower layer of the liquid mass, (c) The tartaric acid solution (after being separated from the ether) was also made alkaline by the addition of sodium carbonate, and was once more agitated with half its volume of ether. (d) The ethereal solution (after standing) was separated, and the ether allowed to evaporate spontaneously, (e) The residue (after drying over sulphuric acid) was treated with water, an excess of pure calcium hydroxide added, and the mixture evaporated on a water-bath. The residue so obtained was treated with chloroform and filtered. The filtrate (after evaporation) yielded the ptomaïne in an isolated and a crystalline condition.

2020 ◽  
Vol 65 (7) ◽  
pp. 1102-1110
Author(s):  
Surisa Sa-nguanprang ◽  
Anukorn Phuruangrat ◽  
Titipun Thongtem ◽  
Somchai Thongtem

Sodium antimonyl tartrate was described in 1842 by Dumas and Prira, who gave it the constitution C 8 H 8 O 10 NaO,Sb 2 O 3 H 2 O, but did not state how they had prepared it Clarke and Evans obtained a compound of the composition 3Na 2 C 4 H 4 O 6 + 2Sb(OH) 3 + 3H 2 O, in 1883, by saturating tartaric acid with antimony trioxide and neutralising the solution with sodium carbonate. The first compound does not seem to have prepared again since 1842. Sodium antimonyl tartrate was prepared according to the methods usually given for preparing tartar emetic, by boiling a solution of acid sodium tartrate (13 grammes ) with a little more than the calculated quantity (10 grammes) of antimony trioxide until the latter had almost completely passed into solution. On filtering and concentrating the solution to a small volume no crystallisation occurred, but on adding a little alcohol the whole became solid. This was them dissolved in about twice its volume of hot water, and alcohol was added until precipitation commenced, when, on cooling, the sodium antimonyl tartrate crystallised out. This compound at the ordinary temperature dries very slowly and has a moist appearance, but when dried in vacuo over sulphuric acid it becomes anhydrous and loses 2½ molecules of water of crystallisation, resembling sodium tartrarsenite in this respect. The substance is very easily soluble in water and its solution reacts faintly acid to litmus.


2009 ◽  
Vol 4 (2) ◽  
pp. 28-33
Author(s):  
Natalia Marchitan

The present paper describes the results of reactive extraction of tartaric acid in model systems, which can be used for its separation from secondary wine products. As extractant have been used a normal/isododecyl mixed secondary amine Amberlite LA-2. The following parameters of the separation process have been varied: nature of diluent and modifier; modifier concentration; concentration, temperature and pH of the tartaric acid solution and the stirring time, and the work intervals have been established. It was concluded that in determinated conditions the extent of tartaric acid extraction attains value 85-95%.


2018 ◽  
Vol 91 (5) ◽  
pp. 778-784
Author(s):  
M. B. Dergacheva ◽  
A. E. Nurtazina ◽  
K. A. Urazov ◽  
N. N. Gudeleva ◽  
V. I. Yaskevich ◽  
...  

1978 ◽  
Vol 61 (6) ◽  
pp. 1433-1434 ◽  
Author(s):  
Ross D Kirchhoefer

Abstract A column cleanup, followed by a shakeout and fluorometric determination, has been developed to determine methylergonovine maleate and ergonovine maleate in tablets and injections. The ether eluate is extracted with tartaric acid solution. An aliquot is diluted with sodium tartrate solution, and this solution is excited at 325 nm. The resulting fluorescence is measured at 432 nm. Results obtained using this method compare favorably with those from the official NF XIV procedure and a semiautomated procedure. Recoveries of 100 and 99% were obtained from one sample each of spiked excipient tablets of methylergonovine maleate and ergonovine maleate, respectively.


2017 ◽  
Vol 182 ◽  
pp. 233-239 ◽  
Author(s):  
Katsiaryna Chernyakova ◽  
Renata Karpicz ◽  
Sergey Zavadski ◽  
Olga Poklonskaya ◽  
Arunas Jagminas ◽  
...  

1975 ◽  
Vol 28 (3) ◽  
pp. 673 ◽  
Author(s):  
DJ Collins ◽  
C Lewis ◽  
JM Swan

Treatment of cyclododecane-r-1,c-5,c-9-triyl tris(p-toluenesulphonate) with sodium azide in dimethyl-formamide at 100� for 6 h gave the corresponding cis,cis-triazide which upon hydrogenation or reduction with lithium aluminium hydride gave cyclododecane-r-1,c-5,c-9-triamine, isolated as the tris-salicylidene derivative. Acid hydrolysis of this, removal of the salicylaldehyde, and treatment of the aqueous solution with sodium carbonate and 2,3-dimethoxybenzoyl chloride gave r-1,c-5,c- 9-tris(2,3-dimethoxybenzamido)cyclododecane. ��� Treatment of (E,E,E)-cyclododeca-1,5,9-triene with an excess of acetonitrile and sulphuric acid at room temperature for three days gave 18% of (E,E)-1-acetamidocyclododeca-4,8-diene; no di- or tri-amides were isolated.


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