Vim li cas qee cov zaub Frozen tig Mushy tom qab ua noj

 

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. Thaum tus neeg yuav khoom hais rau kuv tias, "Jacky, cov khoom no tig mushy," Kuv paub tias yuav los tom ntej no -vim kuv tau ua neej nyob los ntawm qhov tshwm sim nrog cov neeg siv khoom:

1. Tus neeg siv khoom noj khoom haus yws yws tias cov zaub mov zoo li "dej," thiab koj tus kws ua zaub mov poob kev ntseeg siab.

2. Kev tshuaj xyuas cov khw muag khoom hais txog "mos thiab soggy," thiab cov khoom lag luam ntseeg siab yuav raug ntaus.

3. QA nug txog txoj kev npaj kho, thiab tam sim ntawd txhua tus xav tau "ib qho laj thawj."

Nov yog cov lus teb ncaj ncees:Mushy kev ntxhib los mos tsis tshua muaj ib qho ua rau. Nws feem ntau yog qhov tshwm sim ntawmkev puas tsuaj + kev tso dej ntau dhau, amplified los ntawm kev ua noj ua haus. Qhov xov xwm zoo yog: thaum koj nkag siab txog cov txheej txheem, koj tuaj yeem tswj hwm nws - los ntawm cov lus qhia tshwj xeeb, cov lus nug ntawm tus neeg muag khoom, thiab cov lus qhia ua noj ua haus.

 

 

 

 

30-thib ob science: mushy=puas hlwb + dej poob

Cov zaub yog tsim los ntawm cov nroj tsuag. Thaum khov ua cov dej khov nab kuab, cov muaju tuaj yeem ua rau cov phab ntsa ntawm tes thiab daim nyias nyias. Yog tias qhov kev puas tsuaj tseem ceeb, cov zaub tsis tuaj yeem tuav dej ntxiv lawm. Tom qab thawing los yog ua noj, koj tau txaispoob poob, thiab dab tsi tseem xav taumos, tawg, thiab mushy.

Kev tshuaj xyuas loj piav qhia txog kev sib raug zoo hauv nruab nrab:qeeb freezing ua rau cov muaju loj thiab qis dua, thaumKev khov sai ua rau cov muaju me me thiab cov khoom noj khov zoo dua.
Lwm qhov kev tshuaj xyuas qhia txog qhov ntawdCov dej khov uas tsis xav tau hloov pauv cov qauv zaub mov thiab ua rau tsis zoo, nrog rau kev hloov pauv kev ntxhib los mos.
Ib qho kev sib piv 2025 ntawm thawing rov hais dua tiasqeeb khov → loj, tsis sib xws crystals → irreversible cellular puas.

Tus neeg yuav khoom txhais lus:
Yog tias cov khoom lag luam raug puas tsuaj ua ntej nws mus txog koj cov neeg siv khoom hauv chav ua noj, tsis muaj daim ntawv qhia tuaj yeem "ua noj rov qab."

 

 

 

Ua rau #1 - Kev khov qeeb qeeb (cov dej khov loj loj)

 

Vim li cas nws tshwm sim

Kev qeeb qeeb tso cai rau cov dej khov nab kuabloj tuaj. Cov crystals loj no cuam tshuam cov ntaub so ntswg, ua kom poob thiab ua rau softness.

Qhov kev sib txuas ntawm "freezing rate → crystal morphology → quality" yog lub ntsiab lus xaus hauv kev tshawb fawb ice morphology.

 

Cov neeg yuav khoom pom dab tsi

●Musy tom, tshwj xeeb tshaj yog tom qab steaming los yog boiling.

● Cov kua dej ntau dhaunyob rau hauv lub lauj kaub (siab drip poob).

● Cov khoom tsis sib xws: Qee qhov ua tau zoo, thaum lwm tus tau tawg (qhia tias tsis yog -cov khaub ncaws khov).

 

Cov neeg yuav khoom nug tau dab tsi / qhia

Codex txhais ceev -cov zaub khov raws li xav tauntau qhov siab tshaj plaws crystallization kom dhau sai, thiab pom zoo kom txias saw tuav raws li lubCode of Practice for the processing and handle of Quick Frozen Foods.
Yog li, koj cov lus nug tuaj yeem siv tau thiab tshawb xyuas - phooj ywg:

● Lub freezer hom dab tsiyog siv rau qhov no SKU (Fluidized txaj / Belt / Kauv)?

● Dab tsi yog qhov kub ntawm qhov tso tawm, thiab nws tau txheeb xyuas li cas?

● Koj ua li cas tiv thaiv overloading?(Overloading txoj siv slows down lub freezing nqi ib thooj).

FAO phau ntawv qhia khov kho piav qhiafluidized txaj khovraws li txoj hauv kev zoo tshaj plaws rau IQF- cov khoom lag luam, txhawb kev ceev ceev, tus kheej khov rau cov khoom me me.

 

 

 

 

Ua rau #2 - Kub hloov pauv hauv qhov chaw cia (Recrystallization)

Txawm hais tias cov txheej txheem khov yog ua tiav zoo,kev ntxhib los mos tseem tuaj yeem degrade tom qab.

 

Yuav ua li cas

Thaum qhov kub thiab txias hloov thaum lub sij hawm cia los yog kev faib tawm, cov dej khov nab kuab ib nrab yaj thiab rov ua dua. Cov txheej txheem no hu uarecrystallization, thiab nws feem ntau ua rau cov pob zeb loj dua thiab ua rau cov nqaij puas tsuaj ntau dua.

● Tshuaj xyuas ntawm Ice Morphology:Nco tseg tiaskub hloov pauv txo cov khoom noj khov zoothiab ncaj qha txuas drip poob tom qab thawing rau morphology hloov pauv uas tau tsav los ntawm recrystallization.

●2021 Ntawv ntawm Recrystallization/Glass Transition:Hais tiasQhov kub thiab txias hloov thaum lub sij hawm khov cia tuaj yeem ua kom poob zoo.

● Frozen Txiv Hmab Txiv Ntoo / Zaub Ua Kev Ntsuam Xyuas:Qhia meej meej txog cov txheej txheem uas qhov kev hloov pauv ua rau cov dej khov crystal melting thiab regrowth.

● Tshawb nrhiav ntawm Dynamic Storage:Qhia tau hais tias recrystallization ua rau kev hloov pauv microstructural ncaj qha mus rau kev poob zoo hauv zaub (xws li carrots).

 

Cov neeg yuav khoom pom dab tsi

● Tsis sib xws:"Nws tau ua zoo, tam sim no nws tsis yog," txawm nrog tib tus neeg muag khoom thiab spec.

● Visual cues:Clumping thiab "dawb" hauv lub hnab.

● Texture poob:Pom pom degradation tom qab lub sij hawm cia ntev los yog caij thauj tsis zoo.

 

Cov neeg yuav khoom yuav ua li cas

● Xav tau cov ntaub ntawv:Kev thov ntsuas kub thiab kev tswj xyuas kev mus ncig hauv Cold Chain SOPs.

● Kev Tswj Xyuas Zoo:Kho dua micro-kev ncig ua si raws li ibzoo txaus ntshai, tsis yog ib qho kev nthuav dav logistics xwb.

●Align Standards:Ua raws cov kev cia siab txias txias nrog Codex cov lus pom zoo rau kev tuav ceev - cov khoom noj khov.

 

 

 

 

Ua rau #3 - Blanching teeb meem (Hnub-blanching lossis Under-blanching)

Blanching yuav tsum ua kom ruaj khov zoo los ntawm inactivating enzymes, tab sis yog tias tswj tsis tau, nws yuav dhau los ua qhov tsis zoo.kev ntxhib los mos.

 

Hauv qab -blanching (feem ntau phem dua li tsis muaj blanching)

Hauv qab -blanching tuaj yeem tso cov enzyme seem, uas ua rau muaj kev puas tsuaj rau lub sijhawm. Ntau tus tub ceev xwm txuas ntxiv ceeb toom tias nyob rau hauv - blanching tuaj yeem ua phem dua li tsis txhob blanching txhua.

 

Tshaj -blanching ( ncaj qha softening)

Kev tshuaj xyuas kev tshawb fawb sau tseg tias thermal blanching cuam tshuam ntau yam zoo; softening tuaj yeem tshwm sim los ntawm cov hmoov txhuv nplej siab gelatinization thiab kev tawg ntawm cov tshuaj pectic.
Kev tshuaj xyuas 2022 qhia meej meej tias blanching tuaj yeemrhuav tshem cov qauv ntawm tes, ua rau cov zaub kom muag muag, hais txog qhov yuav tsum tau ua kom zoo dua lub sijhawm thiab kub.

 

Cov neeg yuav khoom pom dab tsi

●"Cua-tawm" kev ntxhib los mos:Cov zaub xav tias overcooked txawm tias chav ua noj ua raws lub sijhawm ua noj kom raug.

● Uniform softness:Lub softness zoo ib yam nyob rau hauv lub batch (tsis patchy), feem ntau txuas rau cov txheej txheem kev teeb tsa es tsis txhob khov variability.

 

Dab tsi buyers yuav tsum tau qhia

● Yuav tsum muaj:"Blanching yuav tsum tau" (qhov muaj feem xyuam) + pov thawj ntawm kev tswj (lub sij hawm / kub cov ntaub ntawv, qhia enzyme validation logic).

● Cov Cai Txais Txais:Cov qauv tshwj xeeb rau kev ruaj khov tom qab ua noj, kev txwv tsis pub poob, thiab kev ncaj ncees.

 

 

 

Ua rau #4 - Cov dej ntau dhau mus rau hauv lub freezer (thiab mus rau hauv lub lauj kaub)

Qhov no yog qhov uas ntsiag to buyers feem ntau underestimate.

 

Yuav ua li cas

Yog tias cov khoom tawm ntawm qhov chaw ntxhua khaub ncaws / blanching nrog dej ntau dhau, cov dej ntawd khov ua dej khov. Qhov no txhawb kom clumping thiab tom qab ntawd ua "dawb dej" hauv lub lauj kaub- ua rau cov zaub soggy.

 

Cov neeg yuav khoom pom dab tsi

● Lub hnab ntim khoom:Tshaj "dej hauv lub hnab," dej khov flakes, los yog hnyav te.

● Ua noj:Kev ywg dej hauv lub lauj kaub (txawm tias cov zaub zoo nkauj nws tus kheej tsis tawg tag).

 

Cov neeg yuav khoom nug tau dab tsi

● Dewatering:Muaj cov kauj ruam twg los tshem tawm cov dej (air riam, vibration shakers, centrifuges, dwell time)?

● Tswj:Dab tsi tswj yog nyob rau hauv qhov chaw rau qhov chaw noo nooua ntejcov khoom nkag mus rau hauv IQF qhov?

 

 

 

 

Ua rau #5 - Txoj kev ua noj tsis raug (txawm tias IQF zoo tuaj yeem raug puas tsuaj)

Qee zaum cov khoom lag luam zoo -kev npaj yog qhov teeb meem.

 

Qhov ua yuam kev loj tshaj plaws hauv chav ua noj: Thawing ua ntej ua noj

NCHFP hais tiasfeem ntau cov zaub khov yuav tsum tau siav yam tsis muaj thawing ua ntej(nrog qee qhov tshwj xeeb xws li pob kws ntawm cob lossis nplooj ntsuab uas yuav xav tau ib nrab thawing rau kev ua noj).
NDSU Extension kuj qhia tias feem ntau cov zaub khov yuav tsum tau siav los ntawm khov thiab ceeb toom tawm tsam kev ua noj dhau los, vim tias cov zaub blanched twb tau kho cua sov.

Lub Logic:Thaum cov zaub yog thawed thiab tuav, lawv tso dej thiab muag muag. Los ntawm lub sij hawm cua sov hits lawv, cov qauv yog twb compromised.

 

Overcooking (tshwj xeeb tshaj yog boiling)

Boiling ntxiv dej thiab txhua yam agitation -ob yam uas rau txim rau cov ntaub so ntswg puas. Yog tias tus neeg siv khoom noj dhau lawm, txawm tias cov khoom lag luam IQF muaj zog tuaj yeem hnov ​​​​mob.

Cov neeg yuav khoom txav:suav nrog ib daim ntawv qhia yooj yim ntawm cov nplooj ntawv spec lossis cov lus qhia rau cov neeg siv khoom:

1. Ua noj los ntawm khov.

2. Siv cov kub kub / lub sijhawm luv(steaming los yog do-frying feem ntau zoo dua boiling).

3. Tsis txhob boil ntevtshwj tsis yog cov khoom yog npaj rau kua zaub los yog stews.

 

 

 

 

 

Ua rau #6 - Cov zaub nws tus kheej yog ib txwm "freezing-sensitive"

Tsis yog txhua txhua zaub tuaj yeem tuav tau tom qab khov. Siab - dej, cov ntaub so ntswg ilv (xws li ntau nplooj ntsuab) yog cov txheej txheem yooj yim dua. Qhov no yog vim li cas qee qhov SKUs tau zoo dua rau cov ntawv thov tshwj xeeb:

  ●Kua zaub / Stews

  ●Sauces/Ready Meals

  ●Fillings

●(Tsuas yog daim ntawv thov "ntsuab sab phaj")

Codex cov qauv rau kev ceev- cov zaub khov kuj paub qhov txawv ntawm cov khoom tsim los rau kev noj ncaj qha piv rau cov kev ua haujlwm ntxiv, txhawb ntxiv tiaskev siv cov ntsiab lus tseem ceeb.

 

 

 

 

Daim ntawv qhia kev daws teeb meem ntawm tus neeg yuav khoom (kev kuaj mob ceev)

 

Yog hais tias nws yog mushy + watery thoob plaws ntau ntau

Feem ntau yuav ua rau:

  ●Tus nqi khov yog qeeb heev.

  ●Tshaj -blanching.

 

Yog tias nws zoo ua ntej tab sis phem tom qab

Feem ntau yuav ua rau:

  ●.

 

Yog hais tias nws yog clumpy nyob rau hauv lub hnab thiab dej nyob rau hauv lub lauj kaub

Feem ntau yuav ua rau:

  ●Tshaj dej saum npoo av / Cov kauj ruam dewatering tsis zoo.

  ●Kev kub ntxhov hauv kev cia khoom (qhia los ntawm Frost + khoom clumps).

 

Yog tias tsuas yog koj cov neeg siv khoom tsis txaus siab (koj chav ua noj sim yog OK)

Feem ntau yuav ua rau:

  ●Cov neeg siv khoom yogthawing ua ntej ua noj(los yog overcooking cov khoom).

 

 

 

 

Yuav sau dab tsi rau hauv kev yuav khoom spec (huv, siv tau)

Nov yog cov ntsiab lus uas cov neeg yuav khoom siv tiag tiag siv:

 

1) Cov ntsiab lus khov kho (tus qauv-dlhos)

"Cov khoom yuav tsum ceev- khov xws li covcheeb tsam ntawm qhov siab tshaj plaws crystallization yog dhau sai heev, thiab cov khoom yog tsis tu ncua khaws cia ntawm-18℃lossis txias duathoob plaws lub caij txias. "

 

2) Kev ntxhib los mos

"Raws li kev npaj siv [Txoj Kev Ua Noj Ua Si X], cov khoom lag luam yuav tsum nyob twj ywm thiab tsis pom qhov zoo nkauj zoo nkauj; drip poob yuav tsum nyob hauv qhov kev txwv pom zoo."

 

3) Cov txheej txheem tswj pov thawj

●Blanching tswj(cov ntaub ntawv ntawm lub sijhawm / qhov kub thiab txias / enzyme validation, qhov muaj feem xyuam).

● Cov kab mob khaub thuas saib xyuas kev qhuab qhia(muaj cov ntaub ntawv ntsuas kub).

Qhov no yog li cas koj tiv thaiv kev ntxhib los mos zoo yam tsis tau sau cov lus cog tseg tsis yooj yim sua.

 

 

 

 

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

Pérez-Bermúdez, I., et al. (2023). Kev soj ntsuam thiab ntsuas ntawm Ice Morphology hauv Khoom Noj: Kev Ntsuam Xyuas(ceev vs qeeb khov; recrystallization; poob poob).

Sun, L., et al. (2023). Kev tswj cov dej khov rau kev txhim kho cov khoom noj khov zoo: cov khoom siv, cov txheej txheem thiab cov teeb meem(ice crystals cuam tshuam cov qauv; kev hloov ntawm kev ntxhib los mos).

Koç, GÇ., et al. (2025). Thawing khoom noj khov: Ib qho kev tshuaj xyuas piv…(tus nqi khov muaj feem cuam tshuam rau kev faib khoom siv lead ua; cov muaju loj loj ua rau cov hlwb).

Rau, YH. (2021). Kev Hloov Kho iav thiab Re-Crystalization Phenomena ntawm Cov Khoom Noj Khov(kub hloov pauv ua kom tsis zoo).

van der Sman, RGM. (2020). Kev cuam tshuam ntawm kev ua cov khoom lag luam zoo ntawm cov zaub khov thiab txiv hmab txiv ntoo(kub fluctuation → melting/regrowth; zoo mechanisms).

Vicent, V., et al. (2019). Qhov cuam tshuam ntawm dynamic cia kub…(recrystallization ua rau kev hloov pauv microstructural txuas rau zaub zoo).

Codex Alimentarius (FAO/WHO). Tus qauv rau ceev- Cov Zaub Frozen (CXS 320-2015, hloov kho)(Quick freezing txhais; txias saw; cov khoom lag luam).

FAO. khov txiv hmab txiv ntoo thiab zaub: agri- lwm txoj kev lag luam…(IQF / khov khoom tom qab; fluidized txaj lub tswv yim).

Xiao, H.W., et al. (2017). Kev txhim kho tsis ntev los no thiab cov qauv hauv thermal blanching(Blanching cuam tshuam kev ntxhib los mos; soluble pectic tshuaj).

de Oliveira Tavares, RM, et al. (2022). Blanching Effects on the Quality and Shelf-Cov yam ntxwv ntawm lub neej…(Blanching tuaj yeem rhuav tshem cov qauv ntawm tes thiab muag zaub).

NCHFP (UGA). Freezing Zaub PDF(underblanching phem tshaj tsis blanching; blanching teebmeem).

USDA AskUSDA. Blanching thiab enzyme ua haujlwm thaum khov zaub mov(kev khov qeeb qeeb enzymes; tsis nres).

NCHFP (UGA). Thawing thiab npaj zaub mov rau kev pab(feem ntau cov zaub khov yuav tsum tau siav yam tsis muaj thawing; zam).

North Dakota State University Extension. Cov zaub khov(ua noj yam tsis muaj thawing; tsis txhob overcooking; blanched zaub yuav tsum tau siv sij hawm ua noj tsawg).

eCFR. 21 CFR Part 158 - Cov Zaub Frozen(-18℃ntawm thermal center yuav tsum lus).