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He aha ʻo Furfural?

KC LĀINA

ʻO Furfural kahi kemika i hana ʻia i waho o nā meaola i hana maʻamau ʻia no nā ʻoihana ʻenehana. Hoʻonohonoho mua ʻia ia i nā huahana by mahiʻai e like me ka hus oat, bran, corncobs, a me sawdust. Hoʻohana ʻia kekahi o nā huahana i loko me ka mea hoʻomake mauʻu, fungicide, a me ka mea hoʻoheheʻe. He mea maʻa mau ia i ka hana ʻana o nā wahie halihali a me ke kaʻina hana o ka hoʻomaʻemaʻe i nā aila lubricating. ʻO ka kemika kekahi mea i ka hana ʻana o nā ʻenehana ʻenehana ʻē aʻe pū kekahi.

urfural kahi kemika i hana ʻia i waho o nā mea ʻokanika i hana maʻamau ʻia no nā ʻoihana ʻoihana.

Ke hana nui ʻia, hana ʻia ka kemika e ke kau ʻana i nā polysaccharides pentosan ma o ke kaʻina o ka hydrolysis acid, ʻo ia hoʻi ka hoʻohuli ʻia ʻana o ka cellulose a me nā starches i nā mea kō i ke kō e hoʻohana ana i ka waikawa. I loko o kahi pahu e lewa ai, viscous, kala ʻole, a me ka aila ka furfural, a me kahi ʻala like almond. Hiki i ka hōʻike ʻana i ka lewa ke kala i ka wai i nā aka mai ka melemele a i ka brown.

ʻAlehe i ka wai ʻo Furfural a hiki ke hoʻoheheʻe ʻia i ka ether a me ka etanol. Ma waho aʻe o kāna hoʻohana ʻana ma ke ʻano he kemika solitary, hoʻohana ʻia ia i ka hana ʻana i nā kemika e like me furan, furfuyl, nitrofurans, a me methylfuran. Hoʻohana ʻia kēia mau kemika i ka hana hou ʻana i nā huahana, e like me nā mea mahiʻai mahiʻai, nā lāʻau lapaʻau, a me nā mea hoʻopaʻa.

Nui a hewahewa ke ʻano o ke kanaka me ka furfural. Ma waho aʻe o ka hōʻike ʻana i ka kemika i ka hana ʻana, hiki ke loaʻa kūlohelohe i nā ʻano meaʻai like ʻole. ʻAʻole hōʻike ʻia ka māmā o kēia ʻano he mea ʻinoʻino.

ʻO ke kūkae nui ʻana i ka furfural hiki ke lilo i mea ʻona. I nā hoʻokolohua hoʻokolohua ma nā kānaka a me nā holoholona, ​​ua loaʻa ka furfural i mea hoʻonāukiuki i ka ʻili, nā membrane mucous, a me nā maka. Ua hōʻike ʻia i ka hōʻoluʻolu ʻole o ka ʻāʻī a me nā wahi hanu. Ua hōʻike kekahi i nā hopena pōkole o ka hōʻike ʻana i nā kemika i nā wahi me ka maikaʻi o ka ea e komo pū me nā pilikia hanu, kahi alelo numb, a me ka hiki ʻole ke ʻono. Hiki i nā hopena lōʻihi lōʻihi o kēia ʻano hōʻike ke hoʻopili ʻia mai nā kūlana o ka ʻili e like me eczema a me ka photosensitization i nā pilikia o ka hihiʻo a me ka edema pulmonary.

Ua hoʻohana ākea ʻia ʻo Furfural i ka makahiki 1922 i ka wā a ka Quaker Oats Company i hoʻomaka ai e hana iā ia me nā waʻa oat. Hoʻomau mau ʻo Oats i kekahi o nā ala i makemake nui ʻia e hana i ka kemika. Ma mua o ia manawa, hoʻohana mau ʻia ia i kekahi mau lama o ka ʻaila. Ua hoʻomohala mua ʻia ia i ka makahiki 1832 e Johann Wolfgang Döbereiner, he mea kemika Kelemania e hoʻohana ana i nā kupapaʻu ant e hana i nā waikawa formic, kahi o nā huahana furfural kahi huahana. Manaʻo ʻia he maikaʻi nā naonao i ka hana ʻana i ka kemika no ka mea aia i loko o ko lākou mau kino ke ʻano o nā mea kanu i hoʻohana ʻia i kēia manawa no ka hana ʻana.


Ka manawa Post: ʻAuk-13-2020