Ts'ebetso ea Transglycosidation e sebelisa tsoekere ea D e le lisebelisoa tse tala.

Fischer glycosidation ke eona feela mokhoa oa ho kopanya lik'hemik'hale o nolofalitseng nts'etsopele ea litharollo tsa kajeno tsa moruo le tekheniki bakeng sa tlhahiso e kholo ea li-alkyl polyglucosides. Limela tsa tlhahiso tse nang le bokhoni ba ho feta 20,000 t/year li se li lemohuoe le ho holisa mefuta ea lihlahisoa tsa indasteri ea li-surfactants ka lisebelisoa tse sebetsang ka holim'a metsi tse ipapisitseng le lisebelisoa tse ka nchafatsoang. D-Glucose le linear C8-C16 fatty alcohols li ipakile e le tsona li-feedstocks tse ratoang haholo. Li-educts tsena li ka fetoloa alkyl polyglycosides e sebetsang ka holim'a metsi ka ho toba Fischer glycosylation kapa ka transglycosides ea mehato e 'meli ea butyl polyglycoside boteng ba acid catalyst, ka metsi e le sehlahisoa. Metsi a tlameha ho hloekisoa ho tsoa motsoakong oa karabelo ho fetisetsa tekano ea karabelo ho sehlahisoa se lakatsehang. Ts'ebetsong ea glycosylation, inhomogeneities ka motsoako oa karabelo e lokela ho qojoa hobane e ka lebisa ho theho e feteletseng ea seo ho thoeng ke polydextrose, e sa rateheng haholo. Ka hona, maano a mangata a tekheniki a lebisa tlhokomelo ho li-educts tsa homogenous n-glucose le joala, tseo ho leng thata ho li kopanya ka lebaka la polarities ea tsona e fapaneng. Nakong ea karabelo, maqhama a glycosidic a thehoa lipakeng tsa joala bo mafura le n-glucose le lipakeng tsa li-n-glucose ka botsona. Ka lebaka leo, Alkyl polyglucosides e bopa e le metsoako ea likaroloana tse nang le linomoro tse fapaneng tsa li-glucose ho masala a ketane e telele ea alkyl. E 'ngoe le e' ngoe ea likaroloana tsena, ka lehlakoreng le leng, e entsoe ka likaroloana tse 'maloa tsa isomeric, kaha likarolo tsa n-glucose li nka mefuta e sa tšoaneng ea anomeric le mefuta e sa tšoaneng ea ring e leka-lekaneng ea lik'hemik'hale nakong ea Fischer glycosidation le likamano tsa glycosidic pakeng tsa likarolo tsa D-glucose li etsahala libakeng tse ngata tse ka khonehang. . Karo-karolelano ea anomer ea li-unit tsa D-glucose e batla e le α/β＝ 2: 1 'me e bonahala e le thata ho e susumetsa tlas'a maemo a hlalositsoeng a Fischer synthesis. Tlas'a maemo a laoloang ke thermodynamically, likarolo tsa n-glucose tse ka har'a motsoako oa sehlahisoa li fumaneha haholo ka sebopeho sa pyranosides. Palo e tloaelehileng ea li-unit tse tloaelehileng tsa tsoekere ka masala a alkyl, seo ho thoeng ke tekanyo ea polymerization, ha e le hantle ke ts'ebetso ea tekanyo ea molar ea li-educts nakong ea ts'ebetso ea tlhahiso. Ka lebaka la thepa ea bona e tsotehang ea surfactant, alkyl polyglycosides e nang le tekanyo ea polymerization pakeng tsa 1 le 3 e khethoa ka ho khetheha, ka lebaka leo ka mokhoa ona ho tlameha ho sebelisoa li-moles tse 3-10 tsa lino tse tahang tse mafura.

Tekanyo ea polymerization e fokotseha ha joala bo mafura bo ntse bo eketseha. Joala bo bongata bo feteletseng bo aroloa 'me bo khutlisetsoa morao ka mekhoa ea multistep vacuum distillation ka li-evaporator tsa filimi tse oelang, tse etsang hore ho khonehe ho boloka khatello ea mocheso e le bonyane. Thempereichara ea mouoane e lokela ho ba holimo ka ho lekaneng, 'me nako ea ho kopana sebakeng se chesang e be nako e telele ho lekana ho netefatsa hore ho na le tšilafalo e lekaneng ea joala bo mafura le ho phalla ha alkyl polyglucoside ho qhibiliha, ntle le ho ba le maikutlo a mangata a ho bola. Letoto la mehato ea mouoane le ka sebelisoa hantle ho arola likaroloana tsa pele tse belang hanyane, ebe palo e kholo ea joala bo mafura, 'me qetellong joala bo mafura ho fihlela alkyl polyglucoside e qhibiliha e fumaneha e le masalla a qhibilihang ke metsi.

Esita le ha motsoako le mouoane oa joala bo mafura li etsoa tlas'a maemo a bonolo ka ho fetisisa, 'mala o mosootho o sa batleheng o hlaha, o bitsa mekhoa ea bleaching ho ntlafatsa lihlahisoa. Mokhoa o mong o ipakileng o loketse ke ho eketsoa ha li-oxidants tse kang hydrogen peroxide ho litokiso tse nang le metsi a alkaline polyglucosides sebakeng sa alkaline boteng ba li-ion tsa magnesium.

Lipatlisiso tse ngata le mefuta e fapaneng e sebelisitsoeng nakong ea ho kopanya, ho sebetsa le ho hloekisoa li bontša hore le kajeno ha ho na tharollo ea "turnkey" e sebetsang bakeng sa ho fumana limaraka tse itseng tsa sehlahisoa. Ho fapana le hoo, mehato eohle ea ts'ebetso e hloka ho sebetsa, ho lokisoa, le ho ntlafatsoa. Khaolo ena e fane ka litlhahiso 'me e hlalositse litsela tse ling tse ka khonehang tsa ho qapa litharollo tsa theknoloji, hammoho le ho bolela maemo a tloaelehileng a lik'hemik'hale le a' mele bakeng sa ho etsa liketso, karohano le mekhoa ea ho hloekisa.

Mekhoa eohle e meraro ea mantlha - transglycosidation ea homogeneous, slurry process, le mokhoa oa phepelo ea tsoekere-e ka sebelisoa tlasa maemo a indasteri. Nakong ea transglycosidation, bongata ba butyl polyglucoside e bohareng, e sebetsang e le solubilizer bakeng sa li-educts D-glucose le butanol, e tlameha ho bolokoa ho feta 15% motsoakong oa karabelo e le ho qoba inhomogeneities. Bakeng sa morero o tšoanang, motsoako oa metsi motsoakong oa karabelo o sebelisitsoeng bakeng sa motsoako o tobileng oa Fischer oa alkyl polyglucosides o tlameha ho bolokoa ka tlase ho 1%. Ka har'a metsi a phahameng ho na le kotsi ea ho fetola tsoekere e emisitsoeng ea D-glucose hore e be boima bo thata, e leng se tla fella ka ts'ebetso e mpe le polymerization e feteletseng. Ho susumetsa ka katleho le homogenization ho khothalletsa kabo e ntle le ts'ebetso ea ts'ebetso ea crystalline D-glucose motsoakong oa karabelo.

Lintlha tse peli tsa tekheniki le tsa moruo li tlameha ho nahanoa ha ho khethoa mokhoa oa ho kopanya le mefuta ea eona e rarahaneng. Mekhoa ea homogeneous transglycosidation e thehiloeng ho li-syrups tsa D-glucose e bonahala e le molemo haholo bakeng sa tlhahiso e tsoelang pele ka tekanyo e kholo. Ba lumella ho boloka ka ho sa feleng holim'a crystallization ea D-glucose e tala ka ketane ea boleng bo eketsehileng, e leng ho feta ho lefella lichelete tse phahameng tsa nako e le 'ngoe mohato oa transglycosidation le ho hlaphoheloa ha butanol. Tšebeliso ea n-butanol ha e fane ka mathata a mang, kaha e ka sebelisoa hape hoo e ka bang ka botlalo e le hore mesaletsa ea lihlahisoa tse fumanoeng e be likarolo tse 'maloa feela ho milione, tse ka nkoang e se tsa bohlokoa. Direct Fischer glycosidation ho latela mokhoa oa slurry kapa mokhoa oa phepelo ea tsoekere e fana ka mohato oa transglycosidation le ho hlaphoheloa ha butanol. E ka boela ea etsoa khafetsa 'me e hloka hore ho be le litšenyehelo tse tlase hanyane.

Ho ba teng nakong e tlang le litheko tsa mesaletsa ea lintho tsa khale le tse ka nchafatsoang, hammoho le tsoelo-pele ea tekheniki tlhahisong le ts'ebelisong ea alkyl polyglucosides, li ka lebelloa ho ba le tšusumetso e kholo ntlafatsong ea 'maraka oa morao-rao le bokhoni ba tlhahiso. Litharollo tse sebetsang tsa tekheniki tse seng li ntse li le teng bakeng sa tlhahiso le ts'ebeliso ea alkyl polyglucosides li ka fana ka tlholisano ea bohlokoa 'marakeng oa li-surfactants ho lik'hamphani tse tsoetseng pele kapa tse seng li ntse li sebelisa lits'ebetso tse joalo. Sena ke 'nete haholo-holo ha ho na le litheko tse phahameng tsa oli e tala le litheko tse tlase tsa lijo-thollo. Kaha litšenyehelo tse tsitsitseng tsa tlhahiso li maemong a tloaelehileng bakeng sa batho ba bangata ba sebetsang indastering, esita le phokotso e fokolang ea theko ea lihlahisoa tsa tlhaho e ka 'na ea khothalletsa ho nkeloa sebaka ha lihlahisoa tsa lihlahisoa tsa lihlahisoa' me e ka khothaletsa ka ho hlaka ho kenngoa ha limela tse ncha tsa tlhahiso bakeng sa alkyl polyglucosides.