He aha ka hydroxypropyl methylcellulose i hana ʻia mai?

ʻO ka Hydroxypropyl methylcellulose (HPMC) he polymer synthetic, wai-soluble i loaʻa mai ka cellulose. He pauka keʻokeʻo, ʻala ʻole, ʻono ʻole i hoʻohana nui ʻia ma ke ʻano he mea mānoanoa, emulsifier, film mua, a me ka stabilizer i nā ʻoihana he nui, me nā lāʻau lapaʻau, nā meaʻai, nā mea hoʻonaninani, a me ke kūkulu ʻana.

Hana ʻia ka HPMC ma ka hana ʻana i ka cellulose me ka propylene oxide a me ka methyl chloride. ʻO ka cellulose he polysaccharide ka mea nui o nā paia o nā mea kanu a ʻo ia ka mea nui loa o ka mea kanu ma ka Honua. ʻO ka propylene oxide kahi mea hoʻohui kino me ke ʻano kemika CH3CHCH2O. ʻO ka Methyl chloride he kinoea kala ʻole a hiki ke hoʻā ʻia me ka ʻala ʻono.

ʻO ka hopena o ka cellulose me ka propylene oxide a me ka methyl chloride ka hopena i ka hoʻokumu ʻana o nā pūʻulu hydroxypropyl, i hoʻopili ʻia i nā molekole cellulose. ʻO kēia kaʻina hana i kapa ʻia ʻo hydroxypropylation. Hoʻonui nā hui hydroxypropyl i ka solubility o ka cellulose i loko o ka wai, e maʻalahi ka hoʻohana ʻana i nā ʻano noi.

Hoʻohana nui ʻia ʻo HPMC i ka ʻoihana lāʻau lapaʻau ma ke ʻano he mea hoʻopaʻa, disintegrant, a me ka suspending agent i nā papa a me nā capsules. Hoʻohana ʻia ʻo ia ma ke ʻano he mānoanoa a me ka emulsifier i loko o nā ʻaila a me nā lotions, a ma ke ʻano he kiʻiʻoniʻoni mua i nā kulu maka. I ka ʻoihana meaʻai, hoʻohana ʻia ia e like me ka mānoanoa, stabilizer, a me ka emulsifier i nā kīʻaha, nā lole, a me nā huahana meaʻai ʻē aʻe. I loko o kaʻoihana hana, hoʻohanaʻia ia ma keʻano he mea hoʻopaʻa i ka sima a me ka mortar, a ma keʻano he pale wai no nā paia a me nā papahele.

ʻO ka HPMC kahi mea palekana a ʻaʻole ʻona i ʻae ʻia e ka US Food and Drug Administration (FDA) no ka hoʻohana ʻana i ka meaʻai, nā lāʻau lapaʻau, a me nā mea hoʻonaninani. Ua ʻae ʻia e ka European Union (EU) no ka hoʻohana ʻana i nā meaʻai a me nā lāʻau lapaʻau.