Mekhoa ea ho bolaea likokoana-hloko bakeng sa Metsi a Aquaculture

Mekhoa ea ho bolaea likokoana-hloko bakeng sa Metsi a Aquaculture

Mekhoa ea ho bolaea likokoana-hloko bakeng sa metsi a phelang metsing hangata e kenyelletsa mekhoa e 'maloa e kang ho thibela likokoana-hloko ka ultraviolet (UV), ho bolaea likokoana-hloko tsa ozone, le ho bolaea likokoana-hloko ka lik'hemik'hale. Kajeno, re tla hlahisa UV le ozone e le mekhoa e 'meli ea ho thibela likokoana-hloko le ho bolaea likokoana-hloko. Sengoliloeng sena se hlahlobisisa mekhoa ena ho latela litebello tsa mekhoa le litšobotsi tsa sterilization.

Sterilization ea UV

Molao-motheo oa ho thibela mahlaseli a kotsi a UV o akarelletsa ho monngoa ha matla a khanya a UV ka microbial nucleic acid, ho akarelletsa le ribonucleic acid (RNA) le deoxyribonucleic acid (DNA). Ho monya hona ho fetola tšebetso ea bona ea baeloji, e lebisang ho khaoheng ha litlamo le liketane tsa asiti ea nucleic, ho hokahana ka har'a li-nucleic acid, le ho theha li-photoproducts, ka hona ho thibela ho ikatisa ha likokoana-hloko le ho baka tšenyo e bolaeang. Leseli la UV le arotsoe ka UVA (315~400nm), UVB (280~315nm), UVC (200~280nm), le vacuum UV (100~200nm). Har'a tsena, UVA le UVB li khona ho fihla holim'a Lefatše ka lera la ozone le sekoahelo sa maru. UVC, e tsejoang ka hore ke theknoloji ea ho thibela likokoana-hloko ea UV-C, e bonts'a phello e matla ka ho fetisisa ea ho thibela likokoana-hloko.

Ho sebetsa ha UV sterilization ho ipapisitse le lethal dose la mahlaseli a UV a amoheloang ke likokoana-hloko, hammoho le lintlha tse kang matla a hlahisoang ke UV, mofuta oa lebone, matla a khanya le nako ea tšebeliso. Lethal dose ea mahlaseli a UV e bolela palo ea maqhubu a UV a khethehileng a hlokahalang ho fihlela sekhahla se itseng sa ho koala baktheria. Litekanyetso tse phahameng li baka ts'ebetso e phahameng ea ho thibela likokoana-hloko. Sterilization ea UV e molemo ka lebaka la matla a eona a matla a bactericidal, ketso e potlakileng, khaello ea li-additives tsa lik'hemik'hale, ho ba sieo ha lihlahisoa tse chefo, le ts'ebetso e bonolo. Li-sterilizer tsa UV hangata li sebelisa tšepe e sa hloekang e le thepa ea mantlha, e nang le li-tubes tsa quartz tse hloekileng haholo le mabone a sebetsang hantle a quartz a UV, a netefatsang bophelo bo bolelele le ts'ebetso e tšepahalang. Mabone a tsoang kantle ho naha a ka phela lihora tse 9000.

Phekolo ea Ozone

Ozone ke oxidant e matla, 'me ts'ebetso ea eona ea ho thibela likokoana-hloko e kenyelletsa liphetoho tsa biochemical oxidation. Ozone sterilization e sebetsa ka mefuta e meraro: (1) oxidizing le ho bola ha li-enzyme ka har'a libaktheria tse sebelisang tsoekere, kahoo li koala libaktheria; (2) ho sebelisana ka ho toba le libaktheria le likokoana-hloko, ho senya metabolism ea likokoana-hloko le ho baka lefu; le (3) ho kena liseleng ka li-membrane tsa lisele, ho sebetsa ho lipoprotein tse ka ntle le lipopolysaccharides tse ka hare, tse lebisang ho senyeha ha baktheria le lefu. Ozone sterilization e pharaletseng le lytic, ka katleho e felisa libaktheria, spores, likokoana-hloko, li-fungus, 'me e ka senya chefo ea botulinum. Ho feta moo, ozone e potlakela ho bola ho ba oksijene kapa liathomo tsa oksijene e le 'ngoe ka lebaka la ho se tsitse ha eona. Liathomo tse le 'ngoe tsa oksijene li ka kopana hape ho etsa limolek'hule tsa oksijene, tsa ntlafatsa moea oa oksijene metsing a metsing ntle le ho siea masala a chefo. Kahoo, ozone e nkoa e le sebolaea-libaktheria se loketseng, se sa silafatsang.

Le hoja ozone e na le matla a ho thibela likokoana-hloko, tšebeliso e feteletseng e ka lematsa liphoofolo tse phelang metsing. Lithuto tsa Schroeder et al. bontša hore ozone, ha e sebelisoa ka nepo, e ka tlosa litšila tsa nitrate le tse mosehla ka katleho, ’me ha e sebelisoa ka karohano ea foam, e ka fokotsa ho ata ha baktheria. Leha ho le joalo, tšebeliso e feteletseng e ka hlahisa li-oxidants tse chefo haholo. Silva et al. e boetse e totobatsa hore le hoja ozone e ntlafatsa botsitso ba boleng ba metsi le khatello ea mafu ho aquaculture, liphello tsa eona tsa genotoxic li ka senya botšepehi ba lisele ka har'a lintho tse phelang metsing, e leng se lebisang litabeng tsa bophelo bo botle le ho fokotsa chai. Ka hona, ho bohlokoa ho temo ea metsing ho sebelisa ozone ka nako, e lekantsoeng, e bolokehileng, le e laoloang, ho kenya tšebetsong mehato e tiileng ea ho thibela tšebeliso e feteletseng le ho fokotsa ho qhalana ha ozone ho qoba tšilafalo ea moea.