Ke Kaʻina Hana Fermentation i loko o nā Microorganisms
ʻO ka fermentation kekahi o nā kaʻina hana olaola koʻikoʻi i hana ʻia e nā microorganisms e loaʻa ai ka ikehu. Ua hoʻohana ʻia kēia kaʻina hana e nā kānaka no nā tausani makahiki, ma mua loa o ka ʻike ʻia ʻana o ke kumumanaʻo o ka microbiology. ʻO nā huahana meaʻai a me nā mea inu like ʻole e like me ka tempeh, yogurt, berena, cassava fermented, soy sauce, kimchi, a me nā mea inu ʻona hoʻi ka hopena o ka fermentation. Ma hope o kēia mau huahana like ʻole e waiho ana ke ʻano metabolic o nā microorganisms e hoʻololi i nā mea organik - ʻoi aku hoʻi nā carbohydrates - i nā hui maʻalahi, me ka hoʻokuʻu ʻana o ka ikehu. Kūkākūkā kēia ʻatikala i ka wehewehe ʻana o ka fermentation, nā pae o ke kaʻina hana, nā ʻano o ka fermentation, nā microorganisms i komo, a me nā mea e hoʻohuli ai i ka holomua o ka fermentation.
Ke Hoʻomaopopo ʻana i ka Fermentation
Ma keʻano laulā, ʻo ka fermentation ke kaʻina hana o ka wāwahi ʻana i nā hui organik (e.g., glucose) i nā hui maʻalahi me ke kōkua o nā microorganism a i ʻole nā enzymes a lākou e hana ai. Ma ke ʻano o ka microbiology, hana pinepine ka fermentation i ka loaʻa ʻole o ka oxygen (anaerobic) a i ʻole ma lalo o nā kūlana o ka oxygen palena loa. ʻO ke kumu nui o ka fermentation no nā microorganisms ka hana ʻana i ka ikehu ma ke ʻano o ATP (adenosine triphosphate) i hiki iā lākou ke ola, ulu, a hoʻohua hou.
ʻAʻole e like me ka hanu aerobic, ka mea e hoʻopuka ai i ka ikehu hou aʻe, ʻoi aku ka liʻiliʻi o ka hana ʻana o ka fermentation. Eia nō naʻe, he hoʻolālā hoʻololi koʻikoʻi ka fermentation no nā microorganism i nā wahi nele i ka oxygen, e like me ka palaoa berena, ka waiū i mālama ʻia, a i ʻole nā ʻiʻo mea kanu i hoʻopaʻa ʻia.
Nā Kumu o ka Metabolism Fermentation
No ka hoʻomaopopo ʻana i ka fermentation i loko o nā microorganisms, he mea nui e hoʻomaopopo pehea e hana ai nā cell i ka ikehu. I ka pōkole, hoʻomaka ka fermentation me ka glycolysis, ka wāwahi ʻana o ka glucose i ʻelua mau molekala pyruvate. Hoʻopuka ʻo Glycolysis i kahi liʻiliʻi o ATP a me ka mea lawe electron NADH. Ma lalo o nā kūlana aerobic, hoʻoponopono hou ʻia ʻo NADH ma o ke kaulahao lawe electron, me ka oxygen ma ke ʻano he mea lawe electron hope loa. Eia nō naʻe, i ka fermentation, ʻaʻole loaʻa ka oxygen, no laila pono nā cell e ʻimi i kahi ala ʻē aʻe e "hana hou" ai iā NADH i NAD⁺ e hoʻomau i ka glycolysis.
ʻO kēia kahi e komo ai ka fermentation: e ʻae ka pyruvate a i ʻole nā mea i loaʻa mai iā ia nā electrons mai NADH, no laila e hana hou ana iā NAD⁺. Me ka loaʻa ʻana o NAD⁺, hiki ke hoʻomau ka glycolysis a hana ʻia ka ATP, ʻoiai ma nā nui i kaupalena ʻia.
Nā Pae Laulā o ke Kaʻina Hana Fermentation
ʻOiai ke ʻokoʻa nā ʻano o ka fermentation, ma ka laulā, ʻo ka fermentation i loko o nā microorganisms e komo pū me kēia mau pae:
1. Hoʻomākaukau ʻana i ka substrate
ʻO ka substrate fermentation mua he mau kalapona (glucose, sucrose, maltose, lactose), akā hiki nō hoʻi ke loaʻa mai ka starch a i ʻole cellulose, kahi i wāwahi mua ʻia e nā enzymes. I ka hana tempeh, no ka laʻana, ua wāwahi ʻia ka protein soybean a me nā kalapona e nā enzymes mold. I ka hana lipine, ua hoʻololi ʻia ka starch i loko o ka cassava a i ʻole ka laiki glutinous i nā kō maʻalahi e nā enzymes hū.
2. Glycolysis
Ua wāwahi ʻia ka glucose i pyruvate i loko o ka cytoplasm o ke kelepona. Hoʻopuka kēia pae i kahi ikehu net o 2 ATP no kēlā me kēia molekole glucose a me NADH.
3. Ka hōʻemi ʻana o ka pyruvate (a i ʻole nā mea i loaʻa mai)
A laila hoʻololi ʻia ka Pyruvate i nā huahana hope o ka fermentation, e like me ka lactic acid a i ʻole ethanol. I kēia pae, hoʻokuʻu ʻo NADH i kāna mau electrons, e hoʻololi hou ana i NAD⁺.
4. Ka hoʻokumu ʻana o ka huahana a me nā loli o ke kaiapuni
Hoʻololi pinepine nā huahana fermentation i ka ʻono, ka ʻala, ke ʻano, a me ke ola o nā meaʻai. Hoʻohaʻahaʻa ka waikawa hopena i ka pH, e kāohi ana i ka ulu ʻana o nā microorganisms spoilage, ʻoiai ʻo ka waiʻona a me ke kalapona dioxide e hāʻawi i nā ʻano ʻokoʻa o nā berena a me nā mea inu fermented.
Nā ʻAno o ka Fermentation a me nā Laʻana
1. Ka hoʻoulu ʻana o ka waikawa Lactic
Hana ʻia ka fermentation lactic acid ke hoʻemi ʻia ka pyruvate i ka waikawa lactic. He mea maʻamau kēia kaʻina hana i nā bacteria lactic acid e like me Lactobacillus, Streptococcus, a me Leuconostoc. ʻO ka hopena, he piʻi nui ka acidity.
Laʻana o ka noi:
– Yogurt (ma ke ʻano maʻamau e pili ana iā Lactobacillus bulgaricus a me Streptococcus thermophilus)
– Kimchi a me sauerkraut (nā mea kanu i hoʻomoʻa ʻia e nā bacteria lactic acid)
– Ka hoʻopaʻakai ʻana a me ka hoʻoulu ʻana o kekahi mau iʻa
– I loko o ke kino o ke kanaka, hana pū ka fermentation lactic acid i loko o nā ʻiʻo ke nele ka oxygen.
Hiki ke hoʻokaʻawale ʻia ka fermentation lactic acid i ʻekolu mau ʻano:
– Homofermentative, hana nui i ka waikawa lactic.
– Heterofermentative, e hana ana i ka waikawa lactic a me CO₂ a me nā hui ʻē aʻe e like me ka ethanol a i ʻole ka waikawa acetic.
2. Hoʻomoʻa ʻana i ka waiʻona
Hoʻokō pinepine ʻia ka hoʻoulu ʻana o ka waiʻona e ka mea hū e like me Saccharomyces cerevisiae. Ma kēia kaʻina hana, hoʻololi ʻia ka pyruvate i acetaldehyde me ka hoʻokuʻu ʻana i ka CO₂, a laila hoʻemi ʻia ka acetaldehyde i ethanol.
Laʻana o ka noi:
– Berena: Hoʻāla ka CO₂ i ka palaoa, ʻoiai ʻo ka ethanol e mahuka nui ana i ka wā e hoʻomoʻa ai.
– Pia, waina a me nā ʻuhane kuʻuna: ʻo ka ethanol ka huahana nui i makemake ʻia.
– Lipine: hana i ka ethanol a me nā ʻala like ʻole mai ka hui pū ʻana o ka hū a me nā microorganism bacteria.
3. Ka hoʻoulu ʻana o ka waikawa ʻakika
Pili kēia fermentation i ka hoʻokumu ʻia ʻana o ka waikawa acetic (winika). Ma ke ʻano loea, hoʻololi nā bacteria acetic acid e like me Acetobacter aceti i ka ethanol i ka waikawa acetic, kahi hana e pono ai ka oxygen (aerobic). No laila, ua hoʻokaʻawale pinepine ʻia ʻo ia he "fermentation" i ka ʻoihana meaʻai, ʻoiai he ʻokoʻa ia mai ka fermentation anaerobic maʻemaʻe.
Laʻana o ka noi:
– ʻO ka vīnega cider ʻāpala, ka vīnega laiki, a me nā ʻano vīnega like ʻole.
4. Ka hoʻoulu ʻana o ka Butyrate a me nā mea ʻē aʻe
Hiki i kekahi mau bacteria, e like me Clostridium, ke hana i ka waikawa butyric, ka waikawa acetic, ka butanol, ka acetone, a me ke kinoea. He mea nui kēia mau kaʻina hana i ka microbial ecology a hiki ke kōkua i ka palaho ʻana o kekahi mau meaʻai ke makemake ʻole ʻia.
Nā meaola liʻiliʻi e pāʻani ana i kahi kuleana i ka Fermentation
Hoʻokomo ka Fermentation i nā hui like ʻole o nā microorganisms, me:
– Nā bacteria waikawa lactic: Lactobacillus, Lactococcus, Streptococcus, Pediococcus.
- Mea hū: Saccharomyces, Candida (i loko o kekahi mau hana fermentation kuʻuna).
– ʻŌpala: Rhizopus oligosporus i loko o ka tempeh, Aspergillus oryzae i loko o ka mea ʻono soy a me ka miso. Hoʻokani pinepine ka ʻŌpala i ka hana i ka wāwahi ʻana i nā molekala paʻakikī ma o nā enzymes, no laila e hoʻomaʻamaʻa ai i ka fermentation hou e nā bacteria a i ʻole ka hū.
I loko o nā huahana kuʻuna he nui, ʻaʻole i hoʻokō ʻia ka fermentation e kahi microorganism hoʻokahi, akā, e kahi kaiāulu o nā microbes. Hoʻopuka kā lākou mau pilina i nā ʻono a me nā ʻano like ʻole. No ka laʻana, i loko o ka cassava fermented (tape), hoʻopau ka ʻōpala a me ka hū i ka starch a hana i ka waiʻona, ʻoiai hiki i kekahi mau bacteria ke hana i nā waikawa e kaulike i ka ʻono.
Nā Kumu e Hoʻopilikia ana i ka Holomua o ka Fermentation
ʻO ka holomua o ka hoʻoulu ʻana e hilinaʻi nui ʻia i nā kūlana o ke kaiapuni a me ka kaohi ʻana i ke kaʻina hana. ʻO nā mea nui e komo pū ana me:
1. Mahana
Loaʻa i kēlā me kēia microorganism kahi mahana kūpono. ʻO ka yogurt, no ka laʻana, hoʻoulu pinepine ʻia i nā mahana mahana, ʻoiai hiki ke hana ʻia ka hoʻoulu ʻana o nā mea kanu i nā mahana lumi haʻahaʻa. Hiki i ke kiʻekiʻe loa o ka mahana ke pepehi i nā microbes, ʻoiai ʻo ka haʻahaʻa loa o ka mahana e hoʻolohi i ke kaʻina hana.
2. pH (ʻakika)
pH hoʻopilikia i ka hana enzyme a me ka ulu ʻana Nā meaola liʻiliʻi. Hoʻohaʻahaʻa nā bacteria waikawa lactic i ka pH, no laila e kōkua ana i ka mālama ʻana i ka huahana.
3. Loaʻa ka oxygen
ʻO ka maʻamau, pono ka hoʻoulu ʻana o ka waiʻona a me ka waikawa lactic i nā kūlana anaerobic a i ʻole ka oxygen haʻahaʻa. I ka ʻaoʻao ʻē aʻe, pono ka oxygen i ka hoʻokumu ʻana o ka waikawa acetic.
4. Ka nui o ka paʻakai a me ke kō
Hiki i ka paʻakai ke kāohi i nā microbes spoilage a koho no kekahi mau microbes (no ka laʻana, i ka fermentation mea kanu). ʻO ke kō kahi substrate koʻikoʻi i nā fermentations he nui, akā ʻo ke kiʻekiʻe loa o ka nui hiki ke huki i ka wai mai nā cell microbial, e kāohi ana i ka ulu ʻana.
5. Ka maʻemaʻe a me ka haumia
Hiki i ka haumia e nā microbes makemake ʻole ke hōʻino i ka ʻono, hōʻemi i ka maikaʻi, a i ʻole hana i nā mea ʻawahia. No laila, he mea koʻikoʻi ka hoʻomaʻemaʻe kūpono a me ka hoʻohana ʻana i nā moʻomeheu hoʻomaka i ka ʻoihana.
6. Ka manawa hoʻomoʻa
ʻO ka fermentation pōkole loa hiki ke hopena i kahi huahana "i hoʻopau ʻole ʻia", ʻoiai ʻo ka lōʻihi loa hiki ke hopena i kahi ʻono ʻawaʻawa loa, ʻona loa, a i ʻole kahi ʻano i hōʻino ʻia.
Nā Pōmaikaʻi o ka Fermentation no nā Kānaka
Ma waho aʻe o ka hana ʻana i nā huahana me ka ʻono a me ke ʻala ʻokoʻa, hāʻawi pū ka fermentation i kekahi mau pono:
– E hoʻonui i ke ola o ka papa ma ka hoʻohaʻahaʻa ʻana i ka pH, ka hoʻokumu ʻana i ka waiʻona, a i ʻole nā hui antimicrobial.
– Hoʻonui i ka waiwai o ka meaʻai, no ka laʻana ka hoʻonui ʻana i ka loaʻa ʻana o kekahi mau huaora a me ka wāwahi ʻana i nā antinutrients.
- Hoʻomaikaʻi i ka ʻai ʻana, ʻoi aku hoʻi i nā huahana i loaʻa nā probiotics e like me ka yogurt.
– Hoʻokumu i nā ʻano a me nā ʻono hou i hiki ʻole ke hoʻokō ʻia me ka kuke mau ʻana wale nō.
Pani
ʻO ke kaʻina hana fermentation i loko o nā microorganisms he hoʻolālā metabolic e hiki ai i nā cell ke loaʻa ka ikehu ma lalo o nā kūlana i kaupalena ʻia e ka oxygen ʻoiai e hana ana i nā huahana kemika e hoʻololi i nā ʻano o ka meaʻai. Ma o ka glycolysis a me nā hopena ma hope e hana hou iā NAD⁺, hiki i nā microorganisms ke ola a ulu. No ke kanaka, he ʻenehana olaola waiwai nui ka fermentation, no ka hana ʻana i ka meaʻai, ka mālama ʻana, a me ka hoʻomohala ʻana i nā meaʻai hana. ʻO ka hoʻomaopopo ʻana i nā ʻano fermentation, nā microorganisms i komo, a me nā mea e hoʻohuli i ke kaʻina hana e kōkua i ka hana ʻana i nā huahana fermented palekana, kiʻekiʻe, a kūlike.
