Propionic acid was first described back in the 1800’s by Johann Gottlieb, who found it among the degradation products of sugar. See our third part out of five fun and informative infographics about organic acids, Enjoy!
Propionic acid has physical properties intermediate between those of the smaller carboxylic acids, formic and acetic acids, and the larger fatty acids. It is capable of being mixed with water, but can be removed from water by adding salt.
Propionic acid inhibits the growth of mold and some bacteria. Therefore, these days most propionic acid produced is consumed as a preservative for both animal feed and food for human consumption. Another major application is as a preservative in baked goods, which use the sodium and calcium salts. The esters of propionic acid have fruit-like odors and are sometimes used as solvents or artificial flavorings.
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Asidi ya propionic ilielezwa kwa mara ya kwanza mnamo 1800 na Johann Gottlieb, ambaye aliipata kati ya bidhaa za uharibifu wa sukari. Angalia sehemu yetu ya tatu kutoka kwa infographics tano ya kufurahisha na ya habari kuhusu asidi za kikaboni, Furahia! Asidi ya propionic ina mali za kimwili kati ya zile za asidi ndogo za carboxylic, asidi ya formic na asidi ya asidi, na asidi kubwa za mafuta. Inaweza kuchanganywa na maji, lakini inaweza kuondolewa kutoka kwa maji kwa kuongeza chumvi. Asidi ya propionic huzuia ukuzi wa kuvu na bakteria fulani. Kwa hiyo, siku hizi asidi nyingi za propionic zinazozalishwa hutumiwa kama kihifadhi kwa ajili ya chakula cha wanyama na chakula kwa ajili ya matumizi ya binadamu. Matumizi mengine makuu ni kama kihifadhi katika bidhaa za kuoka, ambazo hutumia chumvi za sodiamu na kalsiamu. Esters ya asidi propionic ina harufu kama ya matunda na wakati mwingine hutumiwa kama vimumunyifu au ladha bandia. Je, unataka kuona maarifa yote kwa njia rahisi ya matumizi? Bonyeza picha ya infographic kupakua PDF - sehemu yetu ya tatu kutoka infographics tano ya kufurahisha na ya habari kuhusu asidi za kikaboni. Furahia!