Resultado da Busca
Henri Braconnot (French: [ɑ̃ʁi bʁakɔno]; 29 May 1780 – 13 January 1855) was a French chemist and pharmacist. He was born in Commercy, his father being a counsel at the local parliament. At the death of his father, in 1787, Henri began his instruction in an elementary school in Commercy and then with private teachers.
In 1832 Henri Braconnot, a chemist at Nancy, Fr., prepared a “xyloidine” by treating starch, sawdust, and cotton with nitric acid. He found that this material was soluble in wood vinegar and attempted to make coatings, films, and shaped articles from it.
15 de jan. de 2012 · Two hundred years ago, Henri Braconnot described a polysaccharide containing a substantial percent of nitrogen, later to be called chitin: that discovery stemmed from investigations on the composition of edible mushrooms and their nutritional value.
- Riccardo A.A. Muzzarelli, Joseph Boudrant, Diederick Meyer, Nicola Manno, Marta DeMarchis, Maurizio ...
- 2012
Henri Braconnot. 1780-1855. French botanist Henri Braconnot is credited as the first person to isolate and identify chitin, a substance commonly found in the exoskeletal shells of invertebrates, which he located in the cell walls of fungi.
1 de jan. de 2007 · Henri Braconnot (1780-1855) was multifaceted scientist who contributed significantly to the Chemistry and Physiology of Vegetables.
- Jaime Wisniak
Henri Braconnot. Henri Braconnot (* 29. Mai 1780 in Commercy; † 15. Januar 1855 in Nancy) war ein französischer Chemiker, Botaniker und Pharmazeut.
Abstract. Henri Braconnot was born in Commercy in 1780. When he was 13 years old, he was bound apprentice in the pharmacy of Graux in Nancy. He remained here for two years, learning pharmacy, chemistry and botany. When the army called him, his position in Strasbourg allowed him to study.
