Imisebenzi:
I-Sodium Metabisulfite iyisithako sokudla esisetshenziswa kabanzi. Ngokungeziwe kumphumela wayo wokuba mhlophe, futhi inemisebenzi elandelayo:
1) Umphumela we-Anti Browning
I-Enzymatic Browning ivame ukuvela ezithelweni, amazambane, i-Sodium Metabisulfite iyindlela yokunciphisa, ukusebenza kwe-polyphenol oxidase kunethonya elinamandla lokuvimbela, i-0.0001% yesulfure dioxide inganciphisa u-20% womsebenzi we-enzyme, i-0.001% yesulfure dioxide ingavimbela ngokuphelele umsebenzi we-enzyme, ungavimbela i-enzymatic Browning; Ngaphezu kwalokho, ingadla umoya-mpilo kuzicubu zokudla futhi idlale indima yokuqedwa komzimba. I-Sulfite ekuphenduleni kokungezelela nge-glucose, ivimbela i-glucose ekudleni kanye ne-amino acid glycoammonia reaction, ngakho-ke inomphumela we-anti Browning.
2) Umphumela wokubulala amagciwane
I-sulfurous acid ingadlala indima yokubulala i-asidi, i-acid engaxubene ne-sulphurous okukholelwa ukuthi ivimbela imvubelo, isikhunta, amabhaktheriya.I-sulfite ehlukanisiwe kubikwa ukuthi inamandla aphindwe izikhathi eziyi-1000 kune-bisulfite ekuvimbeleni i-E.coli. imvubelo kabhiya kanye namandla aphindwe ka-100 ukubumba. Lapho i-sulfur dioxide ine-asidi, inamandla amakhulu ekuphatheni ama-microorganisms.
3, Umsebenzi ziba ngcono ejenti
Ingasetshenziswa njengezinto zomenzeli oxegayo.
3) Umphumela we-antioxidant.
I-Sulfite inomphumela omangazayo we-oxidation.Ngoba i-sulfurous acid iyindlela yokunciphisa enamandla, ingadla umoya-mpilo enhlanganweni yezithelo nemifino, ivimbele umsebenzi we-oxidase, ukubhujiswa kwe-oxidation ka-vitamin C ekuvimbeleni izithelo nemifino kusebenza kakhulu.
Indlela yokusebenza ye-metabisulfite ye-sodium:
I-Bleach ngokwendlela yayo yokusebenza ingahlukaniswa ngezigaba ezimbili: I-oxidation Bleach kanye nokunciphisa iBleach. I-sodium metabisulfite iyi-ejenti yokunciphisa amakhandlela.
Ama-sodium metabisulfite angahlanjululwa ngokunciphisa i-pigment.Umbala wezinhlanganisela eziningi eziphilayo utholakala emaqenjini e-chromaticity aqukethwe kuma-molecule awo.Amaqembu ombala wezinwele aqukethe izibopho ezingagcwalisiwe, ukunciphisa ama-athomu ama-hydrogen akhipha i-bleach kungenza iqembu lombala wezinwele eliqukethwe kusibopho esingafakwanga isibopho esisodwa, into ephilayo izolahlekelwa umbala. Okunye ukudla i-Browning kudalwa ukutholakala kwama-ferric ions, ukwengeza ukunciphisa i-bleach kungenza i-ferric ions ibe yi-ferric ions, kuvimbele ukudla i-Browning.
I-Sodium metabisulfite iblukwe ngokufakwa kwama-sulfite. I-Anthocyanin noshukela kungakhanywa nge-reaction reaction. Lokhu kusabela kuyabuyiselwa emuva, futhi i-acid enesulfure ingasuswa ngokushisa noma nge-acidification, ukuze i-anthocyanin ivuseleleke futhi nombala wayo obomvu wokuqala ubuyiselwe.
Emkhakheni wamabhisikidi, i-sodium metabisulfite isetshenziswa njenge-improver biscuit dough. Ngaphambi kokuyisebenzisa, ilungiselwa isisombululo esingu-20%, bese ifakwa enhlama engavuthiwe ngezikhathi ezahlukahlukene ngenkathi kwenziwa inhlama Ngenxa yesibabule dioxide esikhishwe yi-sodium pyrosulphate ngenkathi kulungiswa inhlama, amandla nobulukhuni bofulawa gluten zinkulu kakhulu, futhi inani elincane lokungezelela lingavimbela ukuguqulwa kwemikhiqizo yamabhisikidi ngenxa yamandla amaningi.Inhlama enzima ingangezwa ngokuya ngamandla kafulawa, futhi ikakhulukazi engxenyeni ephezulu kawoyela noshukela inhlama ebabazekayo nenhlama emnandi emnandi ngangokunokwenzeka ukuthi ungayisebenzisi, lokhu kungenxa yokuthi ukwengezwa kukawoyela noshukela uqobo kuvimbele ukwanda kokumunca amanzi ngamaprotheni e-gluten, kuvimbela ukwakheka kwenani elikhulu le-gluten, asikho isidingo sokwengeza i-sodium metabisulfite.
Amaphuzu wokunakwa ekusetshenzisweni kwe-sodium metabisulfite:
Amaphuzu alandelayo kufanele aqaphele lapho usebenzisa i-sodium metabisulfite ekudleni okusetshenzisiwe:
I-1) i-ejenti ye-sodium metabisulfite reductive baching, isisombululo sayo asizinzile futhi siyantengantenga, manje isiyasetshenziswa, ukuvimbela ukungazinzi kwe-sulfite kanye ne-volatilization.
2) lapho kune-ayoni yensimbi ekudleni, i-sulfite eyinsalela ingenziwa i-oxidized; Ingenza futhi ukuncipha kwe-pigment oxidation kunciphise ukusebenza, ngaleyo ndlela kunciphise ukusebenza kwe-bleach.Ngakho-ke, ama-chelators ensimbi ayasetshenziswa ngenkathi kwenziwa.
3) ukusetshenziswa kwezinto zokukhanyisa i-sulfite, ngenxa yokunyamalala kwesulfure dioxide nombala olula, ngakho-ke imvamisa ekudleni okusele okweqile kwesibabule, kepha inani eliyinsalela ngeke leqe izinga
I-4) I-Sulfuric acid ayikwazi ukuvimbela umsebenzi we-pectinase, ozolimaza ukuhlangana kwe-pectin.Ngaphezu kwalokho, ukungena kwe-acid enesulfure ezicutshini zezithelo, ukucubungulwa kwezithelo eziphukile, ukuze kususwe yonke i-sulfur dioxide, ngakho-ke izithelo zigcinwe I-sulfurous acid ilungele kuphela ukwenza ujamu, izithelo ezomisiwe, iwayini lezithelo, izithelo ezigcwele, azikwazi ukusetshenziswa njengezinto zokusetshenziswa zamathini.
I-5) Ama-Sulfite angabhubhisa i-thiamine, ngakho-ke akulula ukuyisebenzisa ekudleni kwezinhlanzi. 6) Ama-Sulfite kulula ukusabela ngama-aldehydes, amaketoni, amaprotheni, njll.
Amathrendi nentuthuko:
Enkambeni yesimanje yokucubungula ukudla, ngoba ukudla kwesinye isikhathi kuveza umbala ongathandeki, noma okunye ukudla okuluhlaza ngenxa yokuhlukahluka, ezokuthutha, izindlela zokugcina, isikhathi sokuvuthwa, umbala uhlukile, okungaholela kumbala womkhiqizo wokugcina ngokungaguquguquki futhi kuthinta ikhwalithi yokudla.Ngakho-ke, ekunakekeleni kwanamuhla ikhwalithi yokudla, ukuthuthukiswa kwe-ejenti yokugcwala kokudla akunamkhawulo, yebo, njengohlobo lwe-ejenti yokugcwala kokudla, ukuthuthukiswa kwe-sodium metabisulfite nakho kukhulu. i-metabisulfite inemisebenzi ehlukahlukene, hhayi kuphela indima yokufaka amakhorali, kepha futhi nendima ye-oxidation, indima yokuvimbela i-enzymatic Browning, indima ye-antisepsis, indlela yayo yokukhiqiza ilula futhi ilula, ngakho-ke esimweni sokuqinisekisa ukuphepha kokudla , isikhala sokuthuthukiswa kwe-sodium metabisulfite sikhulu kakhulu.
Isikhathi Iposi: Feb-02-2021