1848
DOI: 10.1002/jlac.18480640102
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Untersuchung der Cochenille (Coccus Cacti)

Abstract: Die schiinen theorelischen Resultale, die sich in den lelzten Jahren aus einer genaueren Untersuchung des Indigos ergeben haben, machten ahnliche Erforschung anderer Farbsubslanzen in hohem Grade wiinschenswerth. Ich wahltu fur meine Versuche den Farbstoff der Cochenille, indem das Sludium dieses Korpers, auber wissenschafllichern Interesse, auch einige Ergebnisse von praktischeni Werthe versprach , besonders seit neuere Forschungen von P reifser eitie so innige Beziehung zwischen dem chemischen Verhalten des … Show more

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Cited by 9 publications
(2 citation statements)
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“…de La Rue (129) obtained tyrosine in 1848 during an investigation on the composition of the cochineal insect. Carminic acid was removed from the aqueous extract with lead nitrate, and the filtrate, after removal of the lead, was concentrated to a sirup; a white crystalline product separated.…”
Section: Aspartic Acid Ch(nh2)-cooh Ch2-coohmentioning
confidence: 99%
“…de La Rue (129) obtained tyrosine in 1848 during an investigation on the composition of the cochineal insect. Carminic acid was removed from the aqueous extract with lead nitrate, and the filtrate, after removal of the lead, was concentrated to a sirup; a white crystalline product separated.…”
Section: Aspartic Acid Ch(nh2)-cooh Ch2-coohmentioning
confidence: 99%
“…L-tyrosine (α-amino-β-(p-hydroxyphenyl propionic acid) was isolated in 1846 by Liebig from products of alkaline hydrolysis of casein [21]. In 1848 tyrosine was derived by Rue from cochineal [22], and in 1849 -by Boehm from proteins (albumin, casein, fibrin) [23]. Tyrosine structure was established in 1883 by Erlenmeyer and Lipp.…”
Section: Introductionmentioning
confidence: 99%