Refined qab zib: txoj hauv kev kom tau

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Refined qab zib, tsis zoo li cov suab thaj yooj yim granulated, muaj qib siab purification. Cov neeg tsim khoom muab cov suab thaj rau kev lag luam hauv ntau hom: hmoov, xuab zeb los yog nias. Cov thev naus laus zis los ntawm kev ua kom qab zib tau zoo yog qhov yooj yim; beet lossis cane khoom siv los ua raw khoom. Cov khoom tiav los ntawm ob hom ntawm cov khoom pib saj yuav luag tib yam, tab sis tus nqi sib txawv. Cane refined qab zib yog kim dua thiab siv sij hawm ntev los tsim.

Lub ntsiab lus ntawm cov txheej txheem kom tau txais cov khoom siv huv yog los npaj cov tshuaj saturated, uas tom qab ntawd xa mus rau lub xeev syrup rau ntxiv adsorption thiab kev pom zoo. Tom qab lub resulting loj yog muab tso rau hauv ib lub tshuab nqus tsev twj, qhov twg nws yog coj mus rau ib lub xeev ntawm tag nrho condensation. Txhawm rau kom nws tau txais cov xim dawb-dawb, nws raug kho nrog kev ncua ntawm ultramarine (xim xim zaub mov).

Nyob rau theem tom ntej, cov suab thaj ua kom zoo tuaj yeem tsim tau ob txoj hauv kev, nyob ntawm txoj kev tau txais cov khoom kawg - cam khwb cia lossis nias. Thawj qhov kev xaiv yog kim dua thiab nyuaj. Nrog nws, refined qab zib yog tau los ntawm pouring lub loj (mass loj) rau hauv daim ntawv tshwj xeeb,qhov twg nws maj mam khov. Txhawm rau tshem tawm cov molasses, ib qho kev daws ntawm purified qab zib yog nchuav rau saum, cov txheej txheem no rov ua dua peb mus rau plaub zaug. Raws li qhov tshwm sim ntawm kev ua tiav, cov khoom tiav raug tshem tawm ntawm cov pwm thiab muab faib rau hauv cubes ntawm qhov xav tau loj. Nws yog qhov yooj yim dua thiab pheej yig dua kom tau txais cov suab thaj ua kom zoo nyob rau hauv txoj kev compressed, thaum lub syrup yog bleached nyob rau hauv ib tug tshwj xeeb centrifuge. Cov tshuaj tau txais los ntawm kev ua haujlwm yog nias thiab qhuav, ces faib cov khoom hnyav rau hauv parallelepipeds.

Raws li txoj cai, qhov zoo ntawm cov khoom raug ntsuas los ntawm cov txheej txheem organoleptic, uas txiav txim siab saj, tsw, xim, thiab pob tshab ntawm cov tshuaj. Cov xim ntawm cov khoom ua kom zoo yuav tsum yog dawb, tsis muaj pob thiab huv, tej zaum yuav muaj xim xiav. Cov saj yog qab zib, tsis muaj txawv teb chaws flavors, tib yam siv rau cov tsw. Cov tshuaj yuav tsum tsis muaj impurities, sediment thiab yuav ntshiab los yog me ntsis opalescent. Ntawm cov khoom physico-chemical, qhov tseem ceeb tshaj plaws yog:

- pawg feem ntawm sucrose, noo noo, txo cov tshuaj;

- cov ntsiab lus ntawm ferrous impurities;

- chromaticity;

- fortress.

Ntau yam kab mob microbiological kuj tseem ceeb: cov poov xab, kab mob, fungi, MAFAM, BGKP3. Cov ntsiab lus ntawm cov tshuaj tua kab (phostoxin, hexachloran) thiab tshuaj lom (arsenic, cadmium, lead, mercury, tooj liab, zinc) raug saib xyuas. Cov khoom yog ntim rau hauv daim ntawv ntawm cov xuab zeb thiab hmoov nyob rau hauv lub hnab, thiab pob qab zib - nyob rau hauv lub thawv los yog ib tug neeg lub hnab (2 daim nyob rau hauv subparchment thiab artistic wrapper).

Kev thauj mus los thiabcia cov qab zib refined yog nqa tawm nyob rau hauv ntim los yog nyob rau hauv lub tsheb them. Wagons, tuav, ntim yuav tsum tsis txhob muaj qhov khoob thiab qhuav, lub ru tsev yuav tsum tsis txhob cia dej los ntawm, qhov rooj thiab lub kaus mom yuav tsum kaw kom nruj. Cov khoom yuav tsum khaws cia ntawm qhov av noo tsis tshaj 70% thiab qhov kub tsis siab tshaj 40 ° C, ib txwm sib cais los ntawm lwm yam khoom thiab cov khoom siv.