Noi o ka sodium metabisulfite ma ke ʻano he mea hoʻohui meaʻai

Nā hana:
ʻO Sodium Metabisulfite kahi mea hoʻohui meaʻai i hoʻohana ākea. Ma waho aʻe o kona hopena bleaching, loaʻa iā ia nā hana aʻe:
1) Ka hopena o Anti Browning
Hana pinepine ʻo Enzymatic Browning i nā huaʻai, kaʻuala, Sodium Metabisulfite kahi mea hōʻemi, ʻo ka hana o polyphenol oxidase kahi hopena kaohi ikaika, 0,0001% o ka sulfur dioxide hiki ke hōʻemi 20% o ka hana enzyme, hiki i ka 0.001% o ka sulfur dioxide ke kāohi loa hana enzyme, hiki ke pale aku i ka enamel Browning; Hoʻohui ʻia, hiki iā ia ke hoʻopau i ka oxygen i loko o ka meaʻai a pāʻani i ke kuleana o ka deoxygenation. ʻO Sulfite i ka hopena hoʻohui me ka glucose, pale i ka glucose i ka meaʻai a me ka amino acid glycoammonia react, no laila ke hopena o anti Browning.
2) hopena antiseptic
Hiki i ka waikawa Sulphurous ke pāʻani i ka mālama waikawa, manaʻo ʻole ʻia ka sulfurous acid e kāpae i ka hū, ka pala, nā koʻohune. Ua hōʻike ʻia ka sulfite ʻole i hoʻohui ʻia he 1000 mau manawa ka nui o ka ikaika ma mua o ka bisulfite i ka pāpā ʻana iā E. coli. hū pia a me 100 mau manawa ikaika i ka pala. I ka waikawa sulfur dioxide, he hopena ikaika loa ia i ka lawe ʻana i nā meaola.
3, Hana o ka loosening agena
Hiki ke hoʻohana ʻia e like me nā mea o ka loosening agents.
3) Ka hopena antioxidant.
He hopena kupaianaha ko Sulfite. No ka mea ʻo ka sulfurous acid kahi mea hoʻemi ikaika, hiki ke hoʻopau i ka oxygen i loko o ka hui hua a me nā mea kanu, kāohi i ka hana o ka oxidase, ka luku ʻana o ka oxidation o ka wikamina C i ka pale ʻana i nā hua a me nā mea kanu.

ʻO ka hana o ka sodium metabisulfite:

ʻO ka Bleach e like me ke ʻano o ka hana hiki ke hoʻokaʻawale ʻia i ʻelua mau ʻāpana: ʻOihana Bleach a me Reducing Bleach. ʻO Sodium metabisulfite kahi agena hoʻoluʻu ʻulaʻula.

Hiki ke hoʻopili ʻia ʻo Sodium metabisulfite e ka hoʻēmi ʻana i ka pigment. ʻO ke kala o ka hapa nui o nā mea kūlohelohe i loaʻa mai i nā hui chromaticity i loko o kā lākou moleola. Loaʻa nā pūʻulu kala i nā paʻa unsaturated, e hoʻemi ana i nā atom hydrogen hoʻokuʻu hiki ke hana i nā hui kala o ka lauoho i loko o ka paʻa unsaturated i single bond, mea meaola e nalo ke kala. Hoʻokumu ʻia kekahi meaʻai Browning e ke kū ʻana o nā ioni ferric, me ka hoʻohui ʻana i ka hoʻōmi ʻana i ka bleach i hiki ke hana i nā ionic ferric i nā ionic ferric, pale i ka ʻai Brown.

Hoʻomaʻemaʻe ʻia ka Sodium metabisulfite e ka hoʻohui o nā sulfites. Hiki ke hoʻōla ʻia ka Anthocyanin a me ke kō e ka hopena hoʻohui. Hiki ke hoʻololi i kēia hopena, a hiki ke hoʻoneʻe ʻia ka sulfurous acid e ka hoʻomehana ʻana a i ʻole acidification, i hiki ai i ka anthocyanin ke hoʻoulu hou ʻia a hoʻihoʻi ʻia kona kala ʻulaʻula.

I ka ʻoihana biscuit, hoʻohana ʻia ka sodium metabisulfite ma ke ʻano he mīkini biscuit. Ma mua o ka hoʻohana ʻana, hoʻomākaukau ia i loko o 20% solution, a laila hoʻohui ʻia i loko o ka palaoa makua ʻole i nā manawa like ʻole i ka manawa o ka hana palaoa. Ma muli o ka sulfur dioxide i hoʻokuʻu ʻia e sodium pyrosulphate i ke kaʻina o ka hoʻomākaukau palaoa, ka ikaika a me ka paʻakikī o ka gluten palaoa nui ka nui, a hiki i kahi liʻiliʻi o ka hoʻohui ke pale i ka hoʻoliʻiliʻi o nā huahana biscuit ma muli o ka nui o ka ikaika. Hiki ke hoʻohui ʻia i ka palaoa paʻakikī e like me ka ikaika o ka palaoa, a ma ka hapa nui o ka aila a me ka palaoa kōpaʻa a me ka palaoa momona. i ka hiki ʻole ke hoʻohana, no ka mea ʻo ka hoʻohui ʻana o ka aila a me ke kō iā ia iho i pale i ka hoʻonui ʻia ʻana o ka wai gluten protein, pale i ka hoʻokumu ʻana o kahi gluten nui, ʻaʻohe pono e hoʻohui i ka sodium metabisulfite.

Nā kiko no ka nānā ʻana i ka hoʻohana ʻana i ka sodium metabisulfite:

Pono e hoʻomaopopo ʻia nā helu aʻe i ka hoʻohana ʻana i ka sodium metabisulfite i nā meaʻai i hana ʻia.
1) ʻo ka sodium metabisulfite reductive bleaching agent, paʻa ʻole kāna hopena, hoʻohana ʻia i kēia manawa, e pale i ka paʻa ʻole o ka sulfite a me ka volatilization.
2) ke loaʻa nā ion hao i ka meaʻai, hiki ke oxidized ke koena sulfite; Hiki iā ia ke hana i ka hoʻoliʻiliʻi hoʻoliʻiliʻi hoʻoliʻiliʻi, a laila e hoʻoliʻiliʻi ana i ka pono o ke keʻokeʻo. No laila, hoʻohana ʻia nā chelator metala i ka wā hana.
3) ka hoʻohana ʻana o nā pono hoʻōla sulfite, ma muli o ka nalo ʻana o ka sulfur dioxide a me ke kala maʻalahi, no laila maʻa mau i ka residual sulfur dioxide keu o ka meaʻai, akā ʻaʻole e ʻoi aku ke koena o ke koina i ka hae.
4) ʻAʻole hiki i ka waikawa Sulphuric ke kāohi i ka hana o pectinase, kahi e hōʻino ai i ka pilina o pectin. Eia kekahi, ua komo ka sulfurous acid i loko o ka hua hua, ka hana ʻana o nā hua i wāwahi ʻia, i mea e lawe ai i nā dioxide sulfur a pau, no laila mālama ʻia ka hua me Kūpono wale ka sulfurous acid no ka hana ʻana i ka jam, nā hua maloʻo, ka waina hua, nā hua ʻaʻama, hiki ʻole ke hoʻohana ʻia e like me nā mea maka no nā kini.
5) Hiki i nā Sulfite ke hoʻopau i ka thiamine, no laila ʻaʻole maʻalahi e hoʻohana i ka iʻa iʻa. 6) He maʻalahi nā Sulfites e hana me nā aldehydes, ketones, proteins, etc.

Nā hana a me ke kūkulu ʻana:

I ke kahua hana meaʻai hou, no ka mea, hoʻopuka ka meaʻai i nā kala i makemake ʻole ʻia, a i ʻole kekahi mau mea maka no ka ʻano like ʻole, ka halihali ʻana, nā ʻano mālama, ʻohi ʻana i ka wā o ke oʻo, ʻokoʻa ke kala, i alakaʻi ʻia ai i ka kala o ka huahana hope. kūlike a pili i ka maikaʻi o nā meaʻai. No laila, i ka nānā nui ʻana i kēia manawa i ka maikaʻi o ka meaʻai, ʻaʻohe palena ka hoʻomohala ʻana i ka mea hoʻomaʻemaʻe o ka meaʻai, ʻoiai, ma ke ʻano he ʻano mea hoʻoliʻiliʻi meaʻai, maikaʻi loa ka hoʻomohala ʻana i ka sodium metabisulfite. he nui ka nui o nā hana a ka metabisulfite, ʻaʻole wale ka hana o ke keʻokeʻo ʻana, akā ʻo ke kuleana o ka hoʻōla ʻana, ke kuleana o ka pale ʻana i ka enzymatic Browning, ke kuleana o ka antisepsis, maʻalahi a maʻalahi hoʻi kāna hana hana, no laila i ka hōʻoia ʻana i ka palekana o ka meaʻai. , nui loa ka manawa o ka sodium metabisulfite development space.