Taw qhia: Qhov Quest for Perfect Preservation
Raspberries yog cov khoom zoo nkauj zoo nkauj zoo nkauj- tawg nrog cov xim zoo nkauj, cov khoom qab zib nyuaj -tart flavour, thiab lub zog ntawm antioxidants xws li Vitamin C thiab anthocyanins. Txawm li cas los xij, lawv cov ntsiab lus dej siab (kwv yees . 85-87%) thiab cov qauv tsis yooj yim ua rau lawv tsis yooj yim rau khaws cia. Cov txheej txheem ib txwm muaj xws li kub- cua qhuav feem ntau ua rau shriveled, browned, thiab as-ham- depleted txiv hmab txiv ntoo uas dais me ntsis zoo li cov txiv hmab txiv ntoo tshiab.
Core Mechanism: Sublimation, Tsis evaporation
Yuav kom nkag siab tias yog vim li cas khov ziab kom zoo dua, ib qho yuav tsum xub nkag siab txog lub cev ntawm kev tshem tawm dej.
Tsob Ntoo Qhuav (Qhov Teeb Meem)
Hauv cov pa kub- huab cua kom qhuav lossis lub hnub- ziab, cua sov yog siv los ua kua dej mus rau hauv vapor.
Kev puas tsuaj:Raws li cov kua dej txav los ntawm qhov nruab nrab ntawm lub cell mus rau saum npoo kom evaporate, nws rubs yaj cov suab thaj, acids, thiab pigments nrog nws. Qhov no ua raucase hardening(lub plhaub tawv tawv), shrinkage, thiab lub cev qhuav dej ntawm cellular qauv.
Qhov Kub Factor:Kub kub degrade tshav kub-sensitive vitamins (xws li Vitamin C) thiab oxidize pigments, tig ci liab raspberries dull xim av.
Freeze Drying (Kev daws)
Kev ziab kom qhuav dhau los ntawm cov kua theem tag nrho los ntawm cov txheej txheem hu uaSublimation.
Deep Freezing:Cov raspberries tshiab tau khov sai sai rau qhov kub thiab txias nruab nrab-30 ° F thiab -50 ° F (-22 ° F txog -58 ° F). Nyob rau theem no, tag nrho cov dej hauv cov txiv hmab txiv ntoo hloov mus ua cov dej khov khov.
Kev ziab qhuav (Sublimation):Cov txiv hmab txiv ntoo khov yog muab tso rau hauv lub tshuab nqus tsev vacuum. Nyob rau hauv tsis tshua muaj siab, cua sov yog maj mam thov. Es tsis txhob melting rau hauv cov kua, cov ice crystals hloovncaj qha los ntawm cov khoom rau vapor.
Secondary Drying (Desorption):Lub sijhawm sov so zaum kawg tshem tawm cov dej molecules tseem tshuav, kom ntseeg tau tias cov dej noo zaum kawg tsis tshua muaj (feem ntau<5%).
Kev pom zoo:Vim tias cov dej tsis ua kua, nws tsis txav mus los ntawm cov phab ntsa ntawm tes. Qhov no tiv thaiv cov txheej txheem tawg uas ua rau shrinkage thiab kev ntxhib los mos poob hauv lwm txoj kev ziab.
Txuag Cellular Structure: "Skeleton" ntawm Berry
nws zoo kawg nkaus feature ntawm siab -zoo khov qhuav raspberries yog lawv zoo nkauj. Lawv yog lub teeb, airy, thiab nkig, tab sis lawv khaws cov duab tseeb thiab cov qauv ntxeem tau ntawm cov txiv hmab txiv ntoo tshiab.
Nws ua haujlwm li cas
Ice li Scaffold:Thaum lub sij hawm khov, cov dej khov muaj nyob rau hauv lub cellular vacuoles. Cov crystals no ua raws li ib ntus scaffold, tuav lub cell phab ntsa nruj.
Kev tshem tawm lub tshuab nqus tsev:Thaum sublimation tshwm sim, cov dej khov tawm tom qab microscopic voids (pores) qhov twg cov muaju ib zaug. Cov phab ntsa ntawm tes tseem nyob ruaj khov vim tias lawv tau txais kev txhawb nqa los ntawm cov dej khov kom txog thaum cov dej ploj mus.
Qhov tshwm sim:Lub raspberry tuav nws thawj ntim thiab zoo li. Tsis muaj shrinkage. Thaum koj tom rau hauv nws, ntau txhiab lub hnab me me ua rau muaj kev txaus siabcrunchuas instantly dissolves nyob rau hauv lub qhov ncauj, mimicking lub tawg ntawm ib tug tshiab Berry.
Vim li cas FD saj nyiam txiv hmab txiv ntoo tshiab
Traping Volatiles:Hauv kub- huab cua qhuav, qhov nce siab nqa tawm cov tshuaj tsw qab uas muaj ntxhiab, tawm hauv cov txiv hmab txiv ntoo saj los yog "siav." Nyob rau hauv khov qhuav, qhov kub tsis tshua muaj thiab lub tshuab nqus tsev twj cuab cov volatiles nyob rau hauv lub ntxeem tau matrix ntawm cov txiv hmab txiv ntoo.
Concentration, Tsis Distortion:Raws li dej raug tshem tawm, cov suab thaj thiab cov kua qaub ua kom muaj zog. Vim tias cov qauv tshuaj tsis hloov pauv los ntawm tshav kub, qhov tsw profile tseem yog tus sawv cev ntawm cov txiv hmab txiv ntoo tshiab - ci, tangy, thiab qab zib- tsis muaj cov ntawv sau caramelized los yog hlawv hauv cov txiv hmab txiv ntoo qhuav.
Tsis xav tau additives:Vim hais tias lub ntuj tsw yog khaus heev, siab -zoo khov qhuav raspberries xav tautsis muaj qab zib ntxiv, preservatives, lossis khoom qab zib. Daim ntawv teev cov khoom xyaw yog yooj yim:Raspberries.
Kev noj zaub mov zoo: Lub zog muaj zog hauv txhua qhov tom
Rau kev noj qab haus huv-cov neeg siv khoom paub zoo thiab cov chaw tsim khoom noj khoom haus, kev khaws cov khoom noj yog qhov tseem ceeb. Kev ziab kom qhuav yog dav lees paub tias yog txoj hauv kev zoo tshaj plaws los khaws cov khoom noj khoom haus ntawm cov txiv hmab txiv ntoo perishable.
Yuav Tau Txais Dab Tsi?
Vitamin C (Ascorbic Acid):Kub heev-sensitive. Freeze drying khaws cia txog li90-97%ntawm cov qib tshiab, piv rau qhov poob tseem ceeb hauv cov kaus poom los yog kub- cua kom qhuav.
Fiber ntau:Cov qauv kev noj haus fiber ntau tseem nyob ruaj khov, pab digestion.
Antioxidants:Tshaj li anthocyanins, lwm cov polyphenols thiab ellagic acid tau khaws cia, tswj cov txiv hmab txiv ntoo los tiv thaiv - cov khoom inflammatory.
Minerals:Potassium, magnesium, thiab manganese yog ruaj khov thiab ruaj khov.
Khoom noj khoom haus Fact:Ib ooj ntawm khov khov qhuav raspberries muaj tib cov as-ham xws li kwv yees li 8-10 ooj tshiab raspberries, tsuas yog tsis muaj dej hnyav. Nws yog ib qho khoom noj txom ncauj-dense superfood khoom txom ncauj.
