Ua hana ʻia kāu mau ipu mālama meaʻai i ka metala a i ʻole ka alumini?

I ke koho ʻana i nā ipu mālama meaʻai kūpono, hiki i kekahi ke noʻonoʻo i nā mea like ʻole e like me ke kūpaʻa, ka hoʻomau ʻana, a me ka nani. ʻElua mau koho kaulana ma ka mākeke he mau kini metala a me nā kini alumini. Loaʻa i nā mea ʻelua nā pono kūikawā a hoʻohana nui ʻia e nā mea hana e mālama i ka meaʻai. No laila e luʻu kākou i loko o ke ao o nā kini metala a me ka alumini a hoʻoholo i ka mea ʻoi aku ka maikaʻi no ka mālama ʻana i ka meaʻai.

Hana pinepine ʻia nā kini metala i ke kila a he koho maʻamau ia no ka hoʻopili ʻana a me ka mālama ʻana i ka meaʻai. He mōʻaukala lōʻihi ko kēia mau ipu a ua hōʻoia ʻia he hilinaʻi loa. ʻO kona kūkulu paʻa e hōʻoia i ka pale nui loa mai nā mea o waho e like me ka mālamalama, ka makū a me ka ea, no laila e mālama ana i ka hou a me ka maikaʻi o ka meaʻai i mālama ʻia. Ua kaulana nā kini metala no ko lākou kūpaʻa i ka hopena, e kūpono ai no ka mālama ʻana a i ʻole ka hoʻouna ʻana i ka wā lōʻihi.

Ma ka ʻaoʻao ʻē aʻe, ua lilo nā kini alumini i mea kaulana loa i nā makahiki i hala iho nei ma muli o ko lākou māmā a me nā waiwai aloha i ke kaiapuni. He metala māmā ka alumini me ke kūpaʻa maikaʻi loa i ka pala, e kūpono ai no ka mālama ʻana i nā meaʻai waikawa a me nā meaʻai kalapona. ʻAʻole e like me nā kini kila, ʻaʻole pono nā kini alumini i nā uhi pale hou aʻe, e hōʻemi ana i ka paʻakikī o ke kaʻina hana a me ka hana hou ʻana. Eia kekahi, hiki ke hana hou ʻia ka alumini, e lilo ia i koho aloha i ke kaiapuni.

He ʻoi aku ka maikaʻi o nā kini alumini ma mua o nā kini metala i ka wā e pili ana i ke kūpaʻa. ʻO ka alumini kekahi o nā mea hana hou loa ma ka honua, me ka awelika o ka hana hou ʻana ma mua o 70%. ʻOi aku ka liʻiliʻi o ka ikehu e pono ai ke kaʻina hana hana hou alumini ma mua o ka hana ʻana o ka alumini hou, e hōʻemi ana i nā hoʻokuʻu kalapona a hāʻawi i kahi honua ʻōmaʻomaʻo. ʻOiai hiki ke hana hou ʻia nā kini metala, pono paha i nā kaʻina hana hou e hoʻonui i ka ikehu i ka wā hana hou.

ʻO kekahi ʻano e noʻonoʻo ai, ʻo ia ka hopena o nā mea i ka mālama ʻana i ka meaʻai. Ma muli o ke alo o ka hao, hiki i nā kini metala ke pane me kekahi mau ʻano meaʻai, e hoʻololi ai i ka ʻono a i ʻole ke kala ʻana o ka ʻili. Eia nō naʻe, he papa oxide kūlohelohe ko nā kini alumini e hāʻawi ana i kahi pale e pale ai i ka pili pololei ma waena o ka kini a me ka meaʻai. Hōʻoia kēia i ka mālama ʻana i ka ʻono a me ka maikaʻi, e lilo ana nā kini alumini i koho mua no nā meaʻai palupalu a koʻikoʻi paha.

He kūpono ke kumukūʻai o nā kini metala a me nā kini alumini. Eia nō naʻe, ʻokoʻa paha ke kumukūʻai pololei ma muli o nā mea e like me ka nui, ka hoʻolālā a me ke kaʻina hana. ʻO nā kini metala, ʻoiai nā kini kila, hiki ke emi iki ke kumukūʻai ma muli o ka nui o ke kila. ʻO nā kini alumini, ma ka ʻaoʻao ʻē aʻe, hiki ke kiʻekiʻe ke kumukūʻai mua, akā hiki ke hoʻopau ʻia kēia e ka mālama ʻana i ka ikehu i loaʻa i ka wā o ke kaʻina hana hou.

I ka hōʻuluʻulu ʻana, loaʻa i nā kini metala a me ka alumini ko lākou mau pono ponoʻī i ka wā e pili ana i ka mālama ʻana i ka meaʻai. Hāʻawi nā kini metala i ke kūpaʻa a me ke kūpaʻa i ka hopena, ʻoiai ʻo nā kini alumini e hāʻawi i kahi hopena māmā a aloha i ke kaiapuni. ʻO ka mea hope loa, ʻo ke koho ma waena o nā mea ʻelua e iho i lalo i ka makemake pilikino, ka meaʻai kikoʻī e mālama ʻia ana, a me ke kiʻekiʻe o ke kūpaʻa i makemake ʻia. ʻO kēlā me kēia koho āu e koho ai, hoʻohiki nā kini metala a me ka alumini i ka mālama ʻana i ka meaʻai hilinaʻi, e hōʻoiaʻiʻo ana i ka mālama ʻana i ka hou a me ka maikaʻi.