Umkhiqizo Omusha we-Glucono-delta-lactone
I-Colorkem yethule Isengezo Sokudla esisha: I-Glucono-delta-lactone ngomhla ka-20.Julayi, 2022. I-Glucono-delta-lactone ifushanisiwe njenge-lactone noma i-GDL, futhi ifomula yayo yamangqamuzana ithi C6Hl0O6.Ukuhlolwa kwe-toxicological kufakazele ukuthi iyinto edliwayo engenabuthi.Ikristalu emhlophe noma i-crystalline powder emhlophe, cishe ayinaphunga, iqala ibe mnandi bese ibamuncu ngokunambitha.encibilika emanzini.I-Glucono-delta-lactone isetshenziswa njenge-coagulant, ikakhulukazi ukukhiqizwa kwe-tofu, futhi njenge-protein coagulant yemikhiqizo yobisi.
Isimiso
Umgomo we-glucoronolide coagulation ye-tofu ukuthi lapho i-lactone incibilika emanzini ibe yi-gluconic acid, i-asidi inomphumela we-acid coagulation kumaprotheni obisi lwesoya.Ngenxa yokuthi ukubola kwe-lactone kuhamba kancane, ukuhlangana kwe-coagulation kuyafana futhi ukusebenza kahle kuphezulu, ngakho-ke i-tofu eyenziwe imhlophe futhi ithambile, ilungile ekuhlukaniseni amanzi, imelana nokupheka nokuthosa, imnandi futhi iyingqayizivele.Ukwengeza amanye ama-coagulant afana nalawa: i-gypsum, i-brine, i-calcium chloride, i-umami seasoning, njll., nakho kungenza i-tofu enambitheka ehlukahlukene.
Sebenzisa
1. I-tofu coagulant
Kusetshenziswa i-glucono-delta-lactone njenge-protein coagulant ukukhiqiza i-tofu, ukuthungwa kumhlophe futhi kuthambile, ngaphandle kokubaba kanye ne-astringency ye-brine yendabuko noma i-gypsum, akukho ukulahlekelwa kwamaprotheni, isivuno esiphezulu se-tofu, futhi kulula ukuyisebenzisa.
Uma kubhekwa iqiniso lokuthi uma i-GDL isetshenziswa iyodwa, i-tofu inokunambitheka okumuncu kancane, futhi ukunambitheka okumuncu akufanelekile ku-tofu, ngakho-ke i-GDL ne-CaSO4 noma amanye ama-coagulant avame ukusetshenziswa ngokuhlangene ekukhiqizeni i-tofu.Ngokwemibiko, lapho ukhiqiza i-tofu ehlanzekile (okungukuthi i-tofu ethambile), isilinganiso se-GDL/CaSO4 kufanele sibe ngu-1/3-2/3, inani elingeziwe kufanele libe ngu-2.5% wesisindo sikabhontshisi owomile, izinga lokushisa kufanele lilawulwe 4 °C, futhi isivuno se-tofu kufanele some.Izikhathi ezi-5 isisindo sikabhontshisi, futhi ikhwalithi nayo inhle.Kodwa-ke, kunezinkinga ezithile okufanele ziphawulwe lapho usebenzisa i-GDL ukwenza i-tofu.Isibonelo, ukuqina nokuhlafuna kwe-tofu eyenziwe nge-GDL akulungile njengaleyo ye-tofu yendabuko.Ukwengeza, inani lamanzi okugeza lincane, futhi iphrotheni e-bean dregs ilahleka kakhulu.
2. I-ejenti yokugaya ubisi
I-GDL ayisetshenziswa nje kuphela njenge-protein coagulant ekukhiqizeni i-tofu, kodwa futhi njenge-protein coagulant yokukhiqiza amaprotheni obisi eyogathi noshizi.Ucwaningo luye lwabonisa ukuthi amandla ejeli obisi lwenkomo akhiwa yi-acidification nge-GDL izikhathi ezi-2 zohlobo lokuvutshelwa, kuyilapho amandla ejeli yeyogathi yembuzi eyenziwe nge-acidification nge-GDL izikhathi ezingu-8-10 zohlobo lokuvutshelwa.Bakholelwa ukuthi isizathu sokungabi namandla kwejeli yeyogathi ebilile kungase kube ukuphazanyiswa kwezinto zokuqala (i-biomass nama-polysaccharides eselula) ekusebenzisaneni kwejeli phakathi kwamaprotheni ngesikhathi sokuvutshelwa.Olunye ucwaningo luphinde lwabonisa ukuthi ijeli yobisi ekhiqizwa i-acidification ye-additive 3% GDL ku-30 °C inesakhiwo esifanayo nejeli ekhiqizwa amagciwane e-lactic acid.Kubikwa futhi ukuthi ukungeza i-0.025% -1.5% GDL obisini lwenyathi kungafinyelela i-curd pH edingekayo, futhi okungeziwe okuqondile kuyahlukahluka ngokuqukethwe kwamafutha obisi lwenyathi kanye nezinga lokushisa lokujiya.
3. Isithuthukisi sekhwalithi
Ukusetshenziswa kwe-GDL enyameni yesidlo sasemini kanye nengulube ekheniwe kungandisa umphumela we-ejenti yombala, ngaleyo ndlela kunciphise inani le-nitrite, elinobuthi kakhulu.Ngekhwalithi yokudla okusemathinini, inani eliphakeme lokungezwa ngalesi sikhathi lingu-0.3%.Kuye kwabikwa ukuthi ukungezwa kwe-GDL ku-4 ° C kungathuthukisa ukuqina kwe-fibrillin, futhi ukwengezwa kwe-GDL kungandisa ukuqina kwejeli, kungakhathaliseki ukuthi kukhona i-myosin ne-myosin noma phambi kwe-myosin yodwa.amandla.Ngaphezu kwalokho, ukuxuba i-GDL (0.01% -0.3%), i-ascorbic acid (15-70ppm) ne-sucrose fatty acid ester (0.1% -1.0%) enhlama ingathuthukisa ikhwalithi yesinkwa.Ukwengeza i-GDL ekudleni okuthosiwe kungonga uwoyela.
4. Izilondolozi
Ucwaningo lukaSaniea, u-marie-Helence et al.wabonisa ukuthi i-GDL ngokusobala ingabambezela futhi ivimbele ukukhiqizwa kwe-phage yamabhaktheriya e-lactic acid, ngaleyo ndlela iqinisekise ukukhula okuvamile nokukhiqizwa kabusha kwamabhaktheriya e-lactic acid.Ukwengeza inani elifanele le-GDL obisini kuvimbela ukungazinzi okubangelwa yi-phage kukhwalithi yomkhiqizo kashizi.Qvist, Sven et al.wafunda izici zokulondoloza ze-GDL kumasoseji amakhulu abomvu, futhi wathola ukuthi ukwengeza u-2% we-lactic acid no-0.25% we-GDL emkhiqizweni kungavimbela ngempumelelo ukukhula kwe-Listeria.Amasampula amakhulu amasoseji abomvu afakwe i-Listeria agcinwe ku-10 °C izinsuku ezingu-35 ngaphandle kokukhula kwebhaktheriya.Amasampula angenawo ama-preservatives noma i-sodium lactate kuphela agcinwe ku-10 °C futhi amagciwane azokhula ngokushesha.Kodwa-ke, kufanele kuqashelwe ukuthi uma inani le-GDL liphezulu kakhulu, abantu bangakwazi ukuzwa iphunga elibangelwa yiyo.Kuphinde kubikwe ukuthi ukusetshenziswa kwe-GDL ne-acetate ye-sodium ngesilinganiso se-0.7-1.5: 1 kungandisa isikhathi seshalofu kanye nokusha kwesinkwa.
5. Ama-Acidifiers
Njenge-acidulant, i-GDL ingangezwa ku-sweet sherbet kanye nejeli njenge-vanilla extract kanye nobhanana kashokoledi.Kuyinto eyinhloko ene-asidi esikhumbeni esiyinhlanganisela imvubelo, engakhiqiza kancane kancane igesi ye-carbon dioxide, amabhamuza afanayo futhi athambile, futhi angakhiqiza amakhekhe anambitheka eyingqayizivele.
6. Ama-Chelating agents
I-GDL isetshenziswa njenge-chelating embonini yobisi kanye nemboni kabhiya ukuvimbela ukwakheka kwe-lactite ne-tartar.
7. Amaprotheni flocculants
Emanzini angcolile embonini anamaprotheni, ukungezwa kwe-flocculant eyakhiwe usawoti we-calcium, usawoti we-magnesium kanye ne-GDL kungenza iphrotheni ibe yi-agglutinate kanye nemvula, engasuswa ngezindlela zomzimba.
Izinyathelo zokuzivikela
I-Glucuronolactone iyikristalu emhlophe eyimpuphu, engagcinwa isikhathi eside ngaphansi kwezimo ezomile, kodwa ibola kalula ibe i-asidi endaweni enomswakama, ikakhulukazi kwisisombululo esinamanzi.Emazingeni okushisa asekamelweni, i-lactone esesixazululweni ichithwa ngokwengxenye ibe yi-asidi phakathi nemizuzu engama-30, futhi izinga lokushisa lingaphezu kwama-degree angu-65.Ijubane le-hydrolysis liyashesha, futhi lizoguqulwa ngokuphelele libe yi-gluconic acid lapho izinga lokushisa lingaphezu kwama-95 degrees.Ngakho-ke, lapho i-lactone isetshenziswa njenge-coagulant, kufanele ichithwe emanzini abandayo futhi isetshenziswe kungakapheli isigamu sehora.Ungasigcini isixazululo saso esinamanzi isikhathi eside.
Isikhathi sokuthumela: Aug-15-2022