Hoʻohana ʻia nā Antifoamers e hōʻemi i ka ʻili o ka wai, ka hopena a me ka hoʻokuʻu ʻana, pale i ka hoʻokumu ʻana o ka huʻa, a i ʻole e hōʻemi i ka huʻa i hoʻokumu ʻia i ka wā o ka hana ʻoihana. ʻO nā Antifoamers maʻamau penei:

I. ʻAila kūlohelohe (e laʻa me ka ʻAila Soybean, ka ʻAila Kulina, a pēlā aku)

Nā Pōmaikaʻi: loaʻa, kūpono ke kumukūʻai a maʻalahi hoʻi e hoʻohana;

Nā hemahema: he maʻalahi ke pala a hoʻonui i ka waiwai waikawa inā ʻaʻole mālama pono ʻia.

II.ʻO ka waiʻona kalapona kiʻekiʻe

ʻO ka waiʻona kalapona kiʻekiʻe kahi molekole linear me ka hydrophobicity ikaika a me ka hydrophilicity nāwaliwali, he antifoamer maikaʻi ia i loko o ka ʻōnaehana wai. Pili ka hopena antifoaming o ka waiʻona i kona solubility a me ka diffusion i loko o ka hopena foaming. ʻO ka waiʻona o C7 ~ C9 ka Antifoamers maikaʻi loa. Hoʻomākaukau ʻia ka waiʻona kalapona kiʻekiʻe o C12 ~ C22 me nā emulsifiers kūpono me ka nui o ka ʻāpana o 4 ~ 9μm, me 20 ~ 50% emulsion wai, ʻo ia hoʻi, defoamer i loko o ka ʻōnaehana wai. Loaʻa i kekahi mau esters ka hopena antifoaming i ka penicillin fermentation, e like me ka phenylethanol oleate a me ka lauryl phenylacetate.

III.Nā mea hoʻoheheʻe polyether

1. Nā mea hoʻomaʻemaʻe GP

Hana ʻia ma ka hoʻohui ʻana i ka polymerization o ka propylene oxide, a i ʻole ka hui ʻana o ka ethylene oxide a me ka propylene oxide, me ka glycerol ma ke ʻano he mea hoʻomaka. He hydrophilicity haʻahaʻa kona a he haʻahaʻa ka solubility i loko o ka foaming medium, no laila kūpono ia e hoʻohana ʻia i loko o ka wai fermentation lahilahi. ʻOiai ʻoi aku kona hiki ke antifoaming ma mua o ka defoaming, kūpono ia e hoʻohui ʻia i loko o ka basal medium e kāohi i ke kaʻina hana foaming o ke kaʻina hana fermentation holoʻokoʻa.

2. Nā mea hoʻoheheʻe GPE

Hoʻohui ʻia ka Ethylene oxide ma ka hopena o ke kaulahao polypropylene glycol o GP Antifoamers e hana i ka polyoxyethylene oxypropylene glycerol me ka hopena hydrophilic. Loaʻa i ka GPE Antifoamer ka hydrophilicity maikaʻi, ka hiki ke antifoaming ikaika, akā he solubility nui hoʻi e hoʻoulu ai i ka manawa mālama pōkole o ka hana antifoaming. No laila, he hopena maikaʻi kona i ka wai fermentation viscous.

3. Nā mea hoʻoheheʻe GPE

Hoʻokumu ʻia kahi copolymer poloka me nā kaulahao hydrophobic ma nā wēlau ʻelua a me nā kaulahao hydrophilic ma ke sila ʻana i ka wēlau kaulahao o GPE Antifoamers me ka hydrophobic stearate. ʻO nā mole me kēia ʻano e hōʻuluʻulu pinepine ma ka interface gas-liquid, no laila he hana ʻili ikaika ko lākou a me ka pono defoaming maikaʻi loa.

ʻEhā.Silicone i hoʻololi ʻia ʻo Polyether

ʻO ka Polyether Modified Silicone Antifoamers kahi ʻano hou o nā defoamers kiʻekiʻe. He kūpono ia me nā pono o ka hoʻopuehu maikaʻi, ka hiki ke pale i ka huʻa ikaika, ke kūpaʻa, ʻaʻohe ʻawahia a me ka ʻino ʻole, haʻahaʻa ka volatility a me ka hiki ke Antifoamers ikaika. Wahi a nā ʻano pili kūloko like ʻole, hiki ke hoʻokaʻawale ʻia i ʻelua mau māhele:

1. Copolymer me ka pilina -Si-OC- i hoʻomākaukau ʻia me ka waikawa ma ke ʻano he mea hoʻoulu. He maʻalahi kēia defoamer e hydrolysis a he paʻa ʻole. Inā loaʻa kahi amine buffer, hiki ke mālama ʻia no ka manawa lōʻihi. Akā ma muli o kona kumukūʻai haʻahaʻa, ua maopopo loa ka hiki ke hoʻomohala.

2. ʻO ke copolymer i hoʻopaʻa ʻia e - si-c-bond he ʻano paʻa kona a hiki ke mālama ʻia no nā makahiki ʻelua ma lalo o nā kūlana pani. Eia nō naʻe, ma muli o ka hoʻohana ʻana i ka platinum pipiʻi ma ke ʻano he mea hoʻoulu i ke kaʻina hana, kiʻekiʻe ke kumukūʻai hana o kēia ʻano antifoamers, no laila ʻaʻole i hoʻohana nui ʻia.

V. Mea hoʻoheheʻe Silicon Organic

...mokuna aʻe.