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

I. ʻO ka ʻaila maoli (ʻo ia hoʻi ka ʻaila Soybean, Corn Oil, etc.)

Pōmaikaʻi: loaʻa, uku-pono a maʻalahi hoʻohana;

Nā pōʻino: he maʻalahi ke hoʻohaʻahaʻa a hoʻonui i ka waiwai waika inā ʻaʻole mālama maikaʻi ʻia.

II.Waiona Kalapona Kiekie

ʻO ka waiʻona kalapona kiʻekiʻe he mole laina laina me ka hydrophobicity ikaika a me ka hydrophilicity nāwaliwali, kahi antifoamer kūpono i ka ʻōnaehana wai. ʻO ka hopena antifoaming o ka waiʻona e pili ana i kona hoʻoheheʻe ʻana a me ka hoʻopuehu ʻana i loko o ka hoʻonā ʻana. ʻO ka waiʻona o C7 ~ C9 ka Antifoamers maikaʻi loa. ʻO ka waiʻona kalapona kiʻekiʻe o C12 ~ C22 ua hoʻomākaukauʻia me nā emulsifiers kūpono me ka nui o ka 4 ~ 9μm, me ka 20 ~ 50% wai emulsion,ʻo ia hoʻi, defoamer i loko o ka pūnaewele wai. Loaʻa i kekahi mau ester ka hopena antifoaming i ka fermentation penicillin, e like me ka phenylethanol oleate a me ka lauryl phenylacetate.

III.Polyether Antifoamers

1. GP Antifoamers

Hana ʻia me ka polymerization o propylene oxide, a i ʻole ka hui ʻana o ka ethylene oxide a me propylene oxide, me ka glycerol ma ke ʻano he mea hoʻomaka. Loaʻa iā ia ka hydrophilicity haʻahaʻa a me ka haʻahaʻa haʻahaʻa i loko o ka puaʻa, no laila kūpono ia e hoʻohana i ka wai fermentation lahilahi. No ka mea, ʻoi aku ka maikaʻi o kāna antifoaming ma mua o ka defoaming, kūpono ia e hoʻohui ʻia i loko o ke ʻano basal e pale ai i ke kaʻina hana o ka fermentation holoʻokoʻa.

2. GPE Antifoamers

Hoʻohui ʻia ka Ethylene oxide ma ka hope o ka loulou kaulahao polypropylene glycol o GP Antifoamers e hana i ka polyoxyethylene oxypropylene glycerol me ka hopena hydrophilic. He hydrophilicity maikaʻi ʻo GPE Antifoamer, ikaika antifoaming ikaika, akā he nui hoʻi ka solubility e kumu i ka manawa mālama pōkole o ka hana antifoaming. No laila, he hopena maikaʻi ia i ka broth fermentation viscous.

3. GPEs Antifoamers

Hoʻokumu ʻia kahi copolymer poloka me nā kaulahao hydrophobic ma nā ʻaoʻao ʻelua a me nā kaulahao hydrophilic ma ka hoʻopaʻa ʻana i ka hope kaulahao o GPE Antifoamers me ka hydrophobic stearate. ʻO nā molekala me kēia ʻano hana e hōʻuluʻulu ʻia ma ke kikowaena kinoea-wai, no laila he ikaika ko lākou ʻili a me ka maikaʻi defoaming.

IV.Polyether Hoʻololi Silicone

ʻO Polyether Modified Silicone Antifoamers kahi ʻano hou o nā defoamers kiʻekiʻe. He kumu kūʻai ia me ka maikaʻi o ka hoʻopuehu maikaʻi ʻana, ka ikaika inhibition foam ikaika, kūpaʻa, non-toxic a me ka pōʻino, haʻahaʻa volatility a me ka ikaika Antifoamers ikaika. E like me nā ʻano ʻano pili i loko, hiki ke hoʻokaʻawale ʻia i ʻelua mau ʻāpana:

1. Copolymer me -Si-OC- paʻa i hoʻomākaukau ʻia me ka ʻakika e like me ka catalyst. He maʻalahi kēia defoamer i ka hydrolysis a maikaʻi ʻole ke kūpaʻa. Inā loaʻa kahi amine buffer, hiki ke mālama ʻia no ka manawa lōʻihi. Akā, ma muli o kona kumukūʻai haʻahaʻa, ʻike ʻia ka hiki ke hoʻomohala.

2. ʻO ka copolymer i hoʻopaʻa ʻia e - si-c-bond he ʻano paʻa koʻikoʻi a hiki ke mālama ʻia no ʻelua mau makahiki ma lalo o nā kūlana paʻa. Eia nō naʻe, ma muli o ka hoʻohana ʻana i ka platinum pipiʻi e like me ka catalyst i ke kaʻina hana, ua kiʻekiʻe ke kumu kūʻai o kēia ʻano antifoamers, no laila ʻaʻole i hoʻohana nui ʻia.

V. Organic Silicon Antifoamer

… Mokuna aʻe.