Blanching hauv Frozen Zaub: Thaum Nws Tseem Ceeb

10+ yrs kws tshaj lij: Hoobkas- ncaj qha khov khoom rau 35 lub teb chaws; xoom-risk shipping.

 

 

 

I'm Jacky los ntawm GreenLand- zaub mov. Yog tias koj tau nrhiav cov zaub khov rau lub sijhawm ntev, koj tau ntsib cov teeb meem uas "zoo li me tab sis kawg ua tus nqi ntau":

1. Ntsuab Peas:Yog vim li cas rau tib yam khoom, ib co batch pib tsim ib tug "stale tsw" thiab tig grey tom qab cia li 8 lub hlis?

2. spinach:Vim li cas nws thiaj ua "dej, nceb, thiab tsaus" tam sim ntawd thaum thawing, nrog cov neeg yws yws tias nws zoo li nws tau "siav ob zaug"?

3. Kev ntxhib los mos:Vim li cas tus neeg muag khoom tau thov "Peb siv IQF (Individual Quick Freezing)," tab sis thaum koj ua noj, qhov kev ntxhib los mos zoo li qhov khoob thiab khoob?

 

Feem ntau, lub hauv paus ua rau tsis yog cov khoom siv khov kho nws tus kheej. Nws yog cov kauj ruam uas nquag tsis quav ntsej tab sis qhov tseeb txiav txim siab ntev - lub sij hawm ruaj khov:blanching.

Blanching tsis yog "tsis tsim nyog ua ntej- ua noj" kauj ruam. Nws ua ntau dua li nias a"pause khawm"ntawm cov zaub zoo. Nws nres covcov tshuaj tiv thaiv enzymaticuas yuav txwv tsis pub txuas ntxiv ua kom puas xim, tsw, thiab kev ntxhib los mos ua ntej cov khoom khov. Txawm tias USDA qhia meej meej tias:Kev khov tsuas yog qeeb qeeb ntawm kev ua haujlwm enzyme; nws tsis nres kiag li.Yog li ntawd, cov zaub feem ntau xav tau blanching kom tswj tau qhov haujlwm no.

Hauv tsab xov xwm no, kuv yuav piav qhia qhov no los ntawm kev xav txog kev yuav khoom, qhia meej "thaum blanching yog qhov yuav tsum tau ua, thaum nws tuaj yeem hla tau, thiab qhov tshwm sim ntawm dhau -blanching piv rau hauv -blanching." Qhov no yuav pab koj kom suav nrog cov ntsiab lus no hauv koj qhov kev qhia tshwj xeeb, hais rau lawv thaum lub sijhawm kuaj xyuas lub Hoobkas, thiab siv lawv hauv kev sib tham txog tus neeg muag khoom.

 

 

 

 

 

 

Blanching yog dab tsi?

 

Blanchingyog kev kho cua sov luv luv- feem ntau sivdej kub los yog chav dej-ua raws li qhov txias txias. Lub National Center for Home Food Preservation (NCHFP) ntawm University of Georgia txhais nws ncaj qha: nws tsuas yog "scalding" zaub hauv boiling dej los yog ncu rau ib lub sij hawm luv luv.

Txawm li cas los xij, hauv kev tsim cov zaub khov khov, qhov tseem ceeb ntawm blanching mus deb tshaj li "kub nws me ntsis."

 

 

 

Vim li cas blanching feem ntau tsim nyog ua ntej khov

 

Yog vim li cas 1 - Enzyme inactivation (qhov tseeb yog vim li cas IQF nyob twj ywm "tshiab-zoo li" lub hlis tom qab)

NCHFP qhia meej meej tias: Blanchingqeeb lossis nres qhov kev ua ntawm enzymesuas tuaj yeem ua rau poob ntawm tsw, xim, thiab kev ntxhib los mos.
USDA tseem hais ntxiv tias:Kev khov tsis ua kom cov enzymes no puas tsuaj, nws tsuas slows lawv.

Hauv kev lag luam,POD (Peroxidase)thiabPPO (Polyphenol oxidase)feem ntau yog siv los ua "qhov taw qhia enzymes" los txiav txim siab tias blanching txaus. Ib qho kev txheeb xyuas tau pom zoo hais tias lub hom phiaj tseem ceeb ntawm blanching yog ua kom tsis txhob muaj cov enzymes uas ua rau tsis zoo, thaum tib lub sijhawm cuam tshuam rau cov yam ntxwv xws li xim thiab kev ntxhib los mos.

 

Jacky's Thoughtful Piav Qhia:
Koj tsis them rau xim "thaum lub caij nyoog nws tau khov"; koj them rauruaj khov kev ua tau zoo tshaj 6-18 lub hlis. Blanching yog qhov txiav txim siab "lub sijhawm zoo" ntawm koj cov khoom.

 

Yog vim li cas 2 - Xim stabilization (tshwj xeeb yog zaub ntsuab)

Rau cov khoom xws li nplooj ntsuab, broccoli, thiab taum ntsuab, tsis zoo blanching tswj feem ntau ua rauxim daj, greying, lossis txawm browning.

Blanching txhim kho xim stability los ntawm cov txheej txheem xws li enzyme inactivation thiab tshem tawm ntawm huab cua los ntawm cov ntaub so ntswg. Qhov no yog qhov tseem ceeb tsis tu ncua raws li qhov txiaj ntsig tseem ceeb hauv kev tshuaj xyuas dav dav ntawm thermal blanching.

 

Yog vim li cas 3 - Kev ntxhib los mos thiab kev ua noj ua haus

Lub hom phiaj ntawm blanching tsis yog tag nrho "ua noj" zaub, tab sis ua kom nws ruaj khov rau tom qab khov, thauj, thiab kev npaj zaum kawg.

1. Hauv qab -blanching:Enzymes txuas ntxiv ua haujlwm, rhuav tshem cov ntaub so ntswg.

2. Tshaj -blanching:Cov qauv phab ntsa ntawm tes yog softened ntau dhau, ua rau cov neeg siv khoom zoo nkauj ntxub feem ntau:mushy.

NCHFP thiab ntau yam kev tshaj tawm hauv tsev kawm ntawv nthuav dav:Lub sijhawm blanching yog qhov tseem ceeb, thiabhauv qab -blanching tuaj yeem ua phem dua li tsis muaj blanching txhua.

 

 

Yog vim li cas 4 - Nto ntxuav & txo cov microbial load (cov txiaj ntsig thib ob, tsis ua kom tsis muaj menyuam)

NCHFP sau tseg tias blanching ntxuav qhov chaw ntawm cov av thiab cov kab mob, txo cov microbial suav, thiab pab txo cov vitamin poob. Cov ntaub ntawv kev kawm tseem qhia txog cov txiaj ntsig xws li kev txo qismicrobial loadthiab tshem tawm cov pa phem los ntawm cov ntaub so ntswg.

 

Ceeb Toom:
Blanching yogtsis yogcov kauj ruam kawg ua kom tsis muaj menyuam, tsis yog qhov kev zam rau "tsis quav ntsej txog kev tu cev." Nws tsuas yog ib qho txuas hauv tag nrho cov saw ntawm kev tu cev thiab kev tswj xyuas cov txheej txheem. Lub CodexGeneral Principles of Food Hygieneqhia txog tag nrho - txoj hauv kev raws li GHP (Kev Ua Kom Huv Huv Zoo) thiab HACCP.

 

 

 

 

 

Thaum blanching yog tiag tiag tsim nyog

Hauv qab no, kuv yuav piav qhia txog qhovncauj lus kom ntxawskom qhia meej meej thaum koj yuav tsum hais rau "yuav tsum blanch," thiab thaum nws tau txais kev txiav txim siab "tsis muaj-blanch" lossis "mob-blanch" xaiv.

 

Yuav tsum blanch (hauv feem ntau cov zaub khov ua lag luam)

Cov xwm txheej uas koj yuav luag yeej yuav tsum hais kom blanching:

1. Tsawg- cov zaub kua qaub uas tso siab rau kev tswj enzyme
USDA sau tseg tias feem ntau cov zaub uas haum rau khov yog tsawg -acid. Tsis zoo li cov txiv hmab txiv ntoo, qhov twg cov kua qaub inhibits enzymes, cov zaub no vam khom hnyav rau blanching los tswj cov kev ua enzyme.

2. Cov zaub ntsuab uas xim ruaj khov yog KPI tseem ceeb
Piv txwv li broccoli, peas, taum ntsuab, thiab spinach.

3. Cov khoom yuav tsum tuav tau zoo los ntawm kev khaws cia ntev
Tus nqi ntawm blanching nyob rau hauv "ntev ntev." Yog tias koj nyob hauv khw muag khoom lossis tswj cov khoom siv sib txuas sib txuas, qhov no yog qhov tseem ceeb.

 

Blanching yuav raug txo los yog hla (tshwj xeeb, tswj tau)

Qee cov khoom lag luam tuaj yeem ua rau "mob blanching" lossis txawm tias tsis muaj blanching, tab sis qhov no yuav raug tswj hwm nruj me ntsis raws li cov xwm txheej:

1. Qee cov dos / peppers los yog cov khoom uas enzyme-tsav kom tsis zoo yog qhov tseem ceeb tsawg
Txawm li cas los xij, qhov no yuav tsum yog nyob ntawm tus neeg muag khoomcov ntaub ntawv pov thawj, tsis yog "xav tias nws ua haujlwm."

2. Cov khoom siv nyob rau hauv siab -kub industrial processing qhov twg muaj zog tua cov kauj ruam + tsw masking tshwm sim
Piv txwv li, cov khoom xyaw destined rau ntev, siab - ua noj kub qhov twg daim ntawv qhia qhov ncauj qhov ntswg hloov xim me ntsis.
Txawm li ntawd los, koj tseem yuav tsum saib xyuas qhov cuam tshuam raukev ntxhib los mos, tawm los, thiab thaw drip.

3. Tshwj xeeb "tsis muaj-blanch" thov
Yog tias tus neeg muag khoom thov "ruaj khov yam tsis muaj blanching," koj yuav tsum thov lawvtxheej txheem validation logic. FAO covCov lus qhia rau kev lees paub ntawm Kev Tswj Xyuas Kev Nyab Xeeb Khoom Nojhais ntxiv tias kev tswj hwm yuav tsum tau rov qab los ntawm cov pov thawj ntawm kev ua tau zoo.

 

 

 

 

Tus neeg yuav khoom loj tshaj plaws: hauv qab -blanching vs. dhau -blanching

 

Hauv qab -blanching (tsawg dua li tsis muaj blanching)

Ntau qhov kev tso cai txuas ntxiv hais txog: Hauv qab -blanching tuaj yeem ua tautxhawb kev ua haujlwm enzyme, ua rau cov txiaj ntsig tsis zoo dua li tsis blanching txhua.

Koj yuav pom dab tsi?

1. Tsis hnov ​​tswthaum lub sij hawm cia ( nyom, stale sau ntawv).

2. Xim drift(fading los yog browning).

3. Kev ntxhib los mos(ua mos los yog tawv / fibrous unpredictably).

 

Tshaj -blanching (zoo poob koj them rau)

Tshaj -blanching tau tshwm sim hauv:

1. Ua kom poob qab, xim, cov vitamins, thiab minerals.

2. Kev ntxhib los mos ua mos heev (mushy) thiab nce dej poob (drip).

3. Muaj feem cuam tshuam rau yav tom ntejIQF dawb - ntws(qhov chaw ntub dej ua rau ntau clumping / sticking).

 

 

 

Dej blanching vs. steam blanching

 

Dej blanching

●Pros:Uniform tshav kub hloov thiab tswj yooj yim.

● Risks: Leaching. Qhov no ua rau poob ntawm soluble solids thiab qee cov as-ham. NCHFP tseem sau tseg tias cov dej ib txwm siv / chav dej tuaj yeem ua rau poob ntawm cov khib nyiab thiab cov as-ham.

 

Chav blanching

●Pros:Tsawg leaching piv rau dej blanching.

● Cov neeg yuav khoom tsom:Cov khoom siv thiab tswj kev muaj peev xwm (steam ntim, sijhawm, thiab thauj khoom sib xws).

 

Jacky's Experience Tip:
Koj tsis tas yuav xaiv txoj hauv kev hauv kab lus no, tab sis thaum kev yuav khoom, kojyuav tsumnug:
"Koj siv txoj kev blanching twg? Koj ua pov thawj li cas tias qhov ntsuas enzymes tsis ua haujlwm? Koj yuav ua li cas tiv thaiv cov nqaij mos uas tshwm sim los ntawm ntau tshaj -blanching?"

 

 

 

 

Cov neeg yuav khoom yuav tsum qhia dab tsi (yooj yim, siv tau)

Tam sim no koj nkag siab blanching, koj muaj cov lus raukev ua tiav thiab kev lees txais.

 

1) Qhia qhov yuav tsum tau ua kom blanching los ntawm SKU

  ●"Cov khoom yuav tsum tau blanched (dej / chav dej) ua ntej IQF tshwj tsis yog tias pom zoo."

 

2) Yuav tsum muaj pov thawj tswj cov txheej txheem (tsis yog kev thov xwb)

● Qhov taw qhia Enzyme Txoj Kev:Qhia meej tias cov ntsuas enzyme (piv txwv li, POD / PPO) yog siv los ntsuas, raws li tau hais dav dav hauv cov ntaub ntawv kev lag luam.

● Cov ntaub ntawv:Xav kom tus neeg muag khoom khaws cov ntaub ntawv rau lub sijhawm / ntsuas kub, ua raws li HACCP cov qauv.

 

3) Txhais cov txiaj ntsig kev ua tau zoo ntawm cov neeg yuav khoom tau mob siab rau

● Xim stability(tshwj xeeb yog tom qab ua noj).

● Cov ntaub ntawv(kev ua tau zoo thaum ua noj).

●Drip poob/ Dej ua noj tau tshwm sim.

● Txee- kev cia siab rau lub neej ruaj khov.

 

 

 

 

 

Daim ntawv kawg los ntawm Jacky (yuav ua li cas mus tom ntej)

 

Nkag mus rau:Frozen Vegetables Topic Directory

Yog tias koj xav tau daim duab loj loj - lub moj khaum, thov nyeem:Qhov kawg Guide to Frozen Vegetables.

 

Yog tias koj tau nkag siab cov ntsiab lus saum toj no thiab npaj txhij los pib koj txoj kev yuav khoom, thov koj xav tiv tauj peb txhua lub sijhawm.
GreenLand- zaub mov yog cov kws tshaj lij ntawm cov txiv hmab txiv ntoo thiab zaub khov. Peb npaj txhij los muab tag nrho - kev txhawb nqa txheej txheem, suav nrogProduct Specifications, Quotations, Samples, thiab Lead Time Management.

 

 

Cov ntaub ntawv

National Center for Home Food Preservation (NCHFP), UGA. Blanching zaub(vim li cas blanching yog pom zoo; enzyme tswj; ntxuav; vitamin tuav).

NCHFP, UA. Freezing - Blanching(cov zaub yuav tsum tau blanching; enzyme inactivation; cov khoom noj leaching xav txog).

USDA (AskUSDA). Dab tsi yog blanching thiab nws cuam tshuam li cas rau kev ua enzyme thaum khov zaub mov?(txias slows enzymes; tsis nres; zaub yuav tsum blanching).

USDA FSIS. Dej khov thiab zaub mov nyab xeeb(kev khov qeeb qeeb enzymes; ntsiab lus rau zaub vs nqaij / ntses).

Xiao, H.W., et al. (2017). Kev txhim kho tsis ntev los no thiab cov qauv hauv thermal blanching(saib xyuas; lub hom phiaj: enzyme inactivation, microbial txo, residues; ntsuas POD / PPO, thiab lwm yam).

Lin, S., et al. (2005). Qhov cuam tshuam ntawm txoj kev blanching rau qhov zoo(zoo xws li enzyme inactivation, microbial txo, tshem tawm roj).

de Oliveira Tavares, RM, et al. (2022). Blanching Effects on Quality and Shelf-Cov yam ntxwv ntawm lub neej(enzyme inactivation; pom zoo txo ​​qis xws li POD kev txo qis; kev lag luam zoo-tawm).

Codex Alimentarius (FAO/WHO). General Principles of Food Hygiene (CXC 1-1969)(GHP/HACCP lub moj khaum; tswj kev ua haujlwm).

US FDA. HACCP Cov Ntsiab Lus & Cov Lus Qhia Kev Thov(HACCP cov hauv paus ntsiab lus; kev saib xyuas / pov thawj kev qhuab ntuas ntsig txog kev tswj kev kho cua sov).

FAO/WHO Codex. Cov lus qhia rau kev siv tau ntawm kev ntsuas kev nyab xeeb ntawm zaub mov (CXG 69-2008)(cov ntaub ntawv pov thawj rau kev tswj xyuas).

Michigan State University Extension / Michigan Fresh. Freezing Foods / Blanching qhia(underblanching phem dua li tsis muaj; overblanching ua rau vitamin/mineral poob).

Montana State University Extension. Cov zaub khov(underblanching stimulates enzymes; overblanching poob zoo).

University of Minnesota Extension. Yuav ua li cas blanch zaub kom ruaj ntseg(Kev piav qhia underblanching: enzymes nce ua ntej deactivation).

NCHFP (UGA). Freezing Zaub PDF(lub hom phiaj blanching; underblanching ceeb toom).

CABI Reviews (2025). Blanching reimagined dhau ntawm enzyme inactivation(kev pom niaj hnub ntawm blanching rau xim / tsw / texture).