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. ʻAila Kūlohelohe (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 waikawa 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 ka medium basal e kāohi ai i ke kaʻina hana hū o ke kaʻina 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. ʻO nā 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 hōʻiliʻili i ke 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 hiki.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 paʻa 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 ma ke ʻano he 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.
Ka manawa hoʻouna: Nov-19-2021