Yuav ua li cas extract soybean roj?

Soybean roj yog cov roj noj uas muaj lub teeb thiab huv si uas feem ntau siv rau kev ua noj. Cov roj yog 60% polyunsaturated rog thiab 24% monounsaturated rog, raws li National Soybean Research Laboratory, ua rau lub plawv noj qab haus huv roj. Soybean roj yog muab rho tawm los ntawm ntau txoj kev. Soy taum feem ntau tawm los ntawm 65% roj. Kev lag luam, kev rho tawm cov tshuaj siv hexane yog ib txwm muaj.Rau cov noob taum roj ua cov nroj tsuag uas muaj peev xwm tsawg dua 50 tons hauv ib hnub, cov kab me me thiab nruab nrab cov roj taum cov kab ntau lawm yog qhov zoo rau lawv. Txias nias cov taum uas siv cov roj soybean me me yog txoj hauv kev zoo tshaj plaws rau kev rho tawm cov kua txiv hmab txiv ntoo hauv tsev.

Kev tsim cov roj soybean lag luam yog qhov nyuaj. Soybean roj feem ntau yog tsim los ntawm kev rho tawm nrog cov kuab tshuaj. Kev tsim cov roj soybean muaj cov kauj ruam hauv qab no:

Pretreatment ntawm soybeans

Ua ntej, cov taum pauv tau ntxuav, qhuav, softened thiab flaked ua ntej roj extraction. Cov txheej txheem ntxuav ntawm cov kua txiv hmab txiv ntoo tsuas yog siv peb yam khoom siv, vibrating npo, pob zeb tshem tawm thiab sib nqus sib nqus, uas yog tsim los tshem tawm impurities xws li pob zeb, hlau nplaum thiab nplooj. Txhawm rau kom cov roj rho tawm tau yooj yim dua, cov taum pauv kuj tau muag, thiab qhov kub thiab noo ntawm cov taum pauv hloov. Tom qab softening tiav lawm, soybeans yog flaked, uas tsis tsuas yog txo lub siab ntawm soybean roj xovxwm, tab sis kuj txhim kho cov roj yield ntawm soybeans.

Extraction ntawm soybean roj

Feem ntau muaj ob txheej txheem rau soybean roj extraction. Ib qho yog kom tau cov roj taum nyoos thiab cov ncuav mog qab zib taum los ntawm kev ua noj-nias-filtering. Cov ncuav mog qab zib soybean tuaj yeem ua tiav kom tau cov roj taum thiab taum noj mov los ntawm cov kuab tshuaj extraction. Qhov thib ob yog puffing-drying-solvent extraction kom tau cov taum roj thiab taum noj mov.

Thaum lub sij hawm puffing-drying-solvent extraction txheej txheem, soybeans tau muab tso rau hauv ib lub extractor thiab soaked nyob rau hauv ib tug hnyav, feem ntau n-hexane. Cov txheej txheem countercurrent yog siv los ua cov txheej txheem rho tawm vim nws muaj txiaj ntsig zoo tshaj plaws. Tom qab tshem tawm n-hexane, cov khoom noj taum pauv tau tsuas muaj li ntawm 1% cov roj taum pauv thiab tuaj yeem siv los ua tsiaj txhu noj lossis tsim cov khoom noj xws li taum protein. Cov n-hexane yog cais los ntawm cov roj taum pauv hauv cov evaporator. Cov evaporated n-hexane rov qab los thiab rov qab mus rau txheej txheem rho tawm. Soybean roj yog ces ntxiv purified.

Purification ntawm soybean roj

Cov roj taum nyoos tseem muaj ntau cov roj-insoluble thiab roj-soluble impurities uas yuav tsum tau ua kom zoo dua. Cov khoom siv roj-insoluble raug tshem tawm nrog kev pom thiab cov ntaub ntawv soluble raug tshem tawm nrog cov txheej txheem sib txawv xws li degumming (tshem tawm ntawm phosphatides), alkali refining (ntxuav nrog alkaline tov kom tshem tawm cov roj fatty acids, cov xim, cov teeb meem insoluble, thiab cov pos hniav) thiab bleaching ( nrog rau lub ntiaj teb activated los yog activated carbon rau bleach thiab tshem tawm lwm yam impurities).