I-sodium carboxymethyl cellulose, ebizwa ngokuthi i-carboxymethyl cellulose (CMC) iwuhlobo lwe-fiber ether ephezulu ye-polymer elungiswe ukuguqulwa kwamakhemikhali kwe-cellulose yemvelo. Isakhiwo sawo ngokuyinhloko siyiyunithi ye-D-glucose ngokusebenzisa u-β (1→4) wezingxenye ezixhunyiwe ze-glycosidic. Ukusetshenziswa kwe-CMC kunezinzuzo eziningi ngaphezu kwezinye izithako zokudla.
01 I-CMC isetshenziswa kakhulu ekudleni
(1) I-CMC inozinzo oluhle
Ekudleni okubandayo okufana nama-popsicles ne-ayisikhilimu, ingakwazi ukulawula ukwakheka kwamakristalu eqhwa, ikhulise izinga lokunwetshwa futhi igcine isakhiwo esifanayo, imelane nokuncibilika, ibe nokunambitheka okuhle nokubushelelezi, futhi ibe mhlophe umbala.
Emikhiqizweni yobisi, kungakhathaliseki ukuthi ubisi olunambithekayo, ubisi lwesithelo noma iyogathi, ingasabela ngeprotheyini phakathi kwephuzu le-isoelectric lenani le-pH (PH4.6) ukwakha inkimbinkimbi enesakhiwo esiyinkimbinkimbi, esizuzisa ukuzinza kwe-emulsion kanye nokuthuthukisa ukumelana namaprotheni.
(2) I-CMC ingahlanganiswa namanye ama-stabilizer nama-emulsifiers
Emikhiqizweni yokudla neziphuzo, abakhiqizi abajwayelekile basebenzisa iziqinisi ezihlukahlukene, ezifana nalezi: i-xanthan gum, i-guar gum, i-carrageenan, i-dextrin, njll. Ama-Emulsifiers afana nalokhu: i-glycerol monostearate, i-sucrose fatty acid esters, njll., iyahlanganiswa ukuze igcwalise omunye nomunye. izinzuzo futhi udlale indima ye-synergistic ukunciphisa izindleko zokukhiqiza.
(3) I-CMC ine-pseudoplasticity
I-viscosity ye-CMC ibuyiselwa emuva emazingeni okushisa ahlukene. Njengoba izinga lokushisa likhuphuka, i-viscosity yesisombululo iyancipha, futhi ngokuphambene nalokho; lapho amandla e-shear ekhona, i-viscosity ye-CMC izokwehla, futhi ngokunyuka kwamandla okugunda, i-viscosity izokwehla. Lezi zakhiwo zinika amandla i-CMC ukwehlisa umthwalo wemishini futhi ithuthukise ukusebenza kahle kwe-homogenization lapho inyakazisa, i-homogenizing, kanye nokuthuthwa kwamapayipi, okungenakuqhathaniswa nezinye iziqinisi.
02 Izidingo zenqubo
Njengesinzinzisi esisebenzayo, i-CMC izothinta umphumela wayo uma isetshenziswe ngendlela engafanele, futhi ibangele nokuthi umkhiqizo uchithwe. Ngakho-ke, ku-CMC, kubaluleke kakhulu ukusabalalisa ngokugcwele nangokulinganayo isisombululo sokuthuthukisa ukusebenza kahle kwayo, ukunciphisa umthamo, ukuthuthukisa ikhwalithi yomkhiqizo nokwandisa isivuno. Ikakhulukazi, kufanele kuqashelwe isigaba ngasinye senqubo:
(1) Izithako
1. Indlela yokusabalalisa ye-shear enesivinini esikhulu ngamandla omshini
Zonke izinto zokusebenza ezinekhono lokuxuba zingasetshenziswa ukusiza i-CMC ukuthi ihlakazeke emanzini. Ngokugunda kwesivinini esikhulu, i-CMC ingacwiliswa ngokulinganayo emanzini ukusheshisa ukuqedwa kwe-CMC.
Abanye abakhiqizi okwamanje basebenzisa izixube ze-powder yamanzi noma amathangi okuxuba ngesivinini esikhulu.
2. Indlela yokusabalalisa ushukela owomile
Xuba kahle ne-CMC kanye noshukela oyimbudumbudu ngesilinganiso esingu-1:5, bese ufafaza kancane kancane ngaphansi kokunyakaziswa njalo ukuze uhlakaze ngokugcwele i-CMC.
3. Chaza emanzini anoshukela agcwele
Okufana ne-caramel, njll., kungasheshisa ukuqedwa kwe-CMC.
(2) Ukwengezwa kwe-asidi
Kwezinye iziphuzo ezine-asidi, njengeyogathi, kufanele kukhethwe imikhiqizo emelana ne-asidi. Uma zisebenza ngokujwayelekile, ikhwalithi yomkhiqizo ingathuthukiswa futhi imvula yomkhiqizo kanye nokuhlelwa kabusha kungavinjelwa.
1. Lapho ungeza i-asidi, izinga lokushisa lokwengezwa kwe-asidi kufanele lilawulwe ngokuqinile, ngokuvamile ≤20°C.
2. Ukuhlushwa kwe-asidi kufanele kulawulwe ku-8-20%, okuphansi kungcono.
3. Ukwengezwa kwe-Acid kusebenzisa indlela yokufafaza, futhi yengezwa ngokulandela isiqondiso se-container ratio, ngokuvamile imizuzu engu-1-3.
4. Isivinini esilula n=1400-2400r/m
(3) Okufanayo
1. Inhloso ye-emulsification
I-homogeneous, uketshezi lokuphakelayo oluqukethe amafutha, i-CMC kufanele ihlanganiswe ne-emulsifier, njenge-monoglyceride, ingcindezi ye-homogenization ingu-18-25mpa, futhi izinga lokushisa lingu-60-70 ° C.
2. Inhloso yokwehlukaniswa
I-Homogenization, uma izithako ezihlukahlukene esigabeni sokuqala zingafani ngokuphelele, kusekhona ezinye izinhlayiya ezincane, kufanele kube homogenized, ingcindezi ye-homogenization yi-10mpa, futhi izinga lokushisa liyi-60-70 ° C.
(4) Ukuvalwa inzalo
I-CMC ezingeni lokushisa eliphezulu, ikakhulukazi uma izinga lokushisa lingaphezu kuka-50°C isikhathi eside, i-viscosity ye-CMC enekhwalithi ephansi izokwehla ngendlela engenakuhlehliswa. I-viscosity ye-CMC yabakhiqizi abajwayelekile izokwehla kakhulu ku-80°C imizuzu engama-30, ngakho-ke ukuvala inzalo okusheshayo noma ukufakwa kwe-barization kungasetshenziswa. Indlela yokuvala inzalo ukuze unciphise isikhathi se-CMC ezingeni lokushisa eliphezulu.
(5) Ezinye izinyathelo zokuphepha
1. Izinga lamanzi elikhethiwe kufanele libe amanzi ampompi ahlanzekile futhi ahlanzekile ngangokunokwenzeka. Amanzi omthombo akufanele asetshenziselwe ukugwema ukutheleleka ngegciwane futhi athinte ikhwalithi yomkhiqizo.
2. Izitsha zokuncibilikisa nokugcina i-CMC azikwazi ukusetshenziswa ezitsheni zensimbi, kodwa iziqukathi zensimbi engagqwali, izitsha zokhuni, noma izitsha zobumba zingasetshenziswa. Vimbela ukungena kwama-ion ensimbi e-divalent.
3. Ngemuva kokusetshenziswa ngakunye kwe-CMC, umlomo wesikhwama sokupakisha kufanele uboshwe ngokuqinile ukuze kuvinjelwe ukumuncwa komswakama kanye nokuwohloka kwe-CMC.
03 Izimpendulo zemibuzo ekusetshenzisweni kwe-CMC
I-low-viscosity, i-medium-viscosity, kanye ne-viscosity ephezulu ihlukaniswa kanjani ngesakhiwo? Ingabe kuzoba khona umehluko wokungaguquguquki?
Phendula:
Kuyaqondakala ukuthi ubude bochungechunge lwamangqamuzana buhlukile, noma isisindo samangqamuzana sihlukile, futhi sihlukaniswe sibe yi-viscosity ephansi, ephakathi nendawo ephezulu. Yiqiniso, ukusebenza kwe-macroscopic kuhambisana ne-viscosity ehlukene. Ukuhlushwa okufanayo kune-viscosity ehlukene, ukuzinza komkhiqizo kanye nesilinganiso se-asidi. Ubuhlobo obuqondile ngokuyinhloko buncike kwisixazululo somkhiqizo.
Yikuphi ukusebenza okuthile kwemikhiqizo enezinga lokushintshwa elingaphezu kuka-1.15? Ngamanye amazwi, uma izinga lokushintsha liphakeme, ukusebenza okuthile komkhiqizo kuye kwathuthukiswa?
Phendula:
Umkhiqizo unezinga eliphezulu lokushintshwa, ukwanda kwe-fluidity, kanye ne-pseudoplasticity enciphise kakhulu. Imikhiqizo ene-viscosity efanayo inezinga eliphezulu lokushintshwa kanye nomuzwa oshelelayo osobala. Imikhiqizo enezinga eliphezulu lokushintsha inesixazululo esicwebezelayo, kuyilapho imikhiqizo enezinga elivamile lokushintsha inesixazululo esimhlophe.
Ingabe kulungile ukukhetha i-viscosity ephakathi ukuze wenze iziphuzo zamaprotheni ezivutshiwe?
Phendula:
Imikhiqizo ye-viscosity emaphakathi nephansi, izinga lokushintshwa licishe libe ngu-0.90, kanye nemikhiqizo enokumelana ne-asidi okungcono.
I-CMC ingahlakazeka kanjani ngokushesha? Ngezinye izikhathi, ngemva kokubilisa, iyancibilika kancane.
Phendula:
Hlanganisa namanye ama-colloid, noma uhlakaze nge-agitator engu-1000-1200 rpm.
Ukuhlakazeka kwe-CMC akukuhle, i-hydrophilicity yinhle, futhi kulula ukuhlanganisa, futhi imikhiqizo eneziqu eziphezulu zokufaka esikhundleni isobala kakhulu! Amanzi afudumele ancibilika ngokushesha kunamanzi abandayo. Ukubilisa ngokuvamile akunconywa. Ukupheka isikhathi eside kwemikhiqizo ye-CMC kuzobhubhisa ukwakheka kwamangqamuzana futhi umkhiqizo uzolahlekelwa yi-viscosity yawo!
Isikhathi sokuthumela: Dec-13-2022