Daim ntawv thov hauv PET pub thiab tau zoo dua ntawm cov tshuab sib cav
1 extrusion thev naus laus zis
Extrusion tshuab suav nrog cov khoom noj pub mis uas muaj cov nqi ntawm noo noo mus rau hauv extruder. Nyob rau hauv lub tshuab tawm hauv lub hau ntswj thiab kauv, cov ntaub ntawv txav mus rau tom ntej ax a. Cov tshuab sib txhuam ntawm cov ntaub ntawv thiab cov ntsia hlau, nruab nrab ntawm cov ntaub ntawv thiab cov khoom siv nplawm, thiab xaws ntawm cov ntaub ntawv, thiab ntxim nyiam ntxiv thiab homogenize lawv. Raws li lub siab thiab kub sab hauv lub tshuab chamber txuas ntxiv ntxiv, cov ntaub ntawv hla kev hloov dag lub cev ntawm qhov kub thiab kub siab, thiab siab shear zog. Thaum kawg, cov muab tshuaj txhuam - Zoo li cov ntaub ntawv raug ntiab tawm los ntawm kev tuag, thiab cov ntaub ntawv muaj qhov sib txawv, cov khoom sib txawv.
2 Qhov Zoo ntawm Extrusion Tshuab
Tom qab ua cov khoom xyaw extrusion, pub cov khoom xyaw ua kom pom cov ntxhiab tsw ntxhiab tsw ntxhiab thiab khav theeb, khav theeb zoo nkauj, yog li siv zog ua kom muaj zog ntawm cov tsiaj. Ib txhij, qhov ntev - saw qauv ntawm qee cov organic sib xyaw ua ke thiab cov roj av nrawm dua thiab cov tsiaj kom yooj yim dua thiab cov tsiaj nqus tau yooj yim.
2.1 hmoov txhuv nplej siab thiab kev ua tsis taus
Tom qab extrusion thiab nthuav dav, hmoov txhuv nplej siab tawg ob lub ntsiab hloov. Firstly, hmoov txhuv nplej siab gelatinization tshwm sim. Thaum lub sij hawm nthuav kev nthuav dav, cov qauv siv lead ua nteg qe tsis zoo, thiab nthuav tawm cov hmoov txhuv nplej siab, thiab nthuav tawm cov hmoov txhuv nplej siab, tig mus rau hauv viscous yaj. Nyob rau ntawm qhov hluav taws xob ntawm Extruder, vim yog lub zog instantly poob thiab cov hmoov txhuv nplej siab, thiab ntau cov roj ntsha pub dawb rau cov roj ntsha tau tsim. Thib ob, cov hmoov txhuv nplej siab tshwm sim, nrog ib qho kev txo qis tseem ceeb hauv qhov nruab nrab molecular phaus ntawm cov hmoov txhuv nplej siab. Los ntawm kev tawg, me me molecular qauv xws li maltodextrin tuaj yeem tsim tawm. Cov hmoov txhuv nplej siab tau muaj peev xwm muaj zog dej ntxiv dua li cov hmoov txhuv nplej siab, uas tuaj yeem txo cov hmoov txhuv nplej siab thiab muab ntau txoj kev xaiv rau lwm cov khoom siv raw. Nyob rau tib lub sijhawm, cov hmoov txhuv nplej siab muaj peev xwm khi cov protein rau cov hmoov txhuv nplej siab, uas tsis muaj protein ntau, uas txhim kho cov protein ntau, uas txhim kho cov protein los ntawm ruminants.
2.2 Protein Denaturation
Nyob rau hauv kev sib xyaw ua ke ntawm cov kub siab, muaj kev kub siab, thiab siab shear zog hauv lubOb Chav Ntsia Hlau Extruder, cov tertiary thiab cov quarary qauv ntawm cov protein yog rhuav tshem. Cov protein molecular qauv ncab ncab thiab cov ntawv sau ua haujlwm, nrog cov npoo txuas ntawm cov qauv txheej txheem homogenies. Cov ntawv cog lus hydrogen hydrogen, disulfide bonds, thiab lwm qhov feem tau tawg ib nrab, ua rau qhov kawg ntawm cov protein kawg. Cov qib ntawm cov protein denaturation yog ze ze rau cov tsis sib xws thaum lub sijhawm ua haujlwm. Thaum lub sij hawm cov txheej txheem extrusion, ntau anti {-} Cov tshuaj ntsuab, thiab lwm yam khoom noj khoom haus, thiab lwm yam polyphenolates, thiab guypolol hauv cottonseed.
Plaub, raws li lub siab - zoo cov protein pub khoom noj muaj kwv yees li 75%, tau ua cov khoom muaj txiaj ntsig ntawm cov khoom pub. Txawm li cas los xij, cov protein hauv feather noj mov yog feem ntau muaj cov qauv sib tw, thiab cov kab ke hydrophibic, ua rau nws nyuaj rau cov tsiaj kom zom thiab siv. Cov neeg pub mis pub dawb tsis tau kho feathered feathered noj mov yog tsawg heev, nrog kev zom zaub mov tsawg, nrog kev zom li ntawm tsuas yog li 7%. Tom qab extrusion, keratin protein nyob rau hauv cov plaub yam tsis pom zoo, ua rau nws zom cov protein, ua rau nws zom thiab nqus tau, thiab txoj kev zom zaub mov tau nce ntau dua 70%.
2.3 Denaturation rog
Extrusion kev cuam tshuam kev cuam tshuam cov qauv xov tooj ntawm phab ntsa ntawm cov roj muaj roj, tso cov roj thiab roj muaj nyob hauv. Txoj kev ua no ua tiav cov roj thiab cov rog. Extrusion tseem tuaj yeem ua ke cov roj ua ke nrog cov hmoov txhuv nplej siab lossis cov protein los tsim cov khoom lag luam (lipoproteins) lossis (lipopolysaccharides), txo cov ntsiab lus ntawm kev ua rog dawb. Ib txhij, nws inactivates esterases, inhibiting qhov kev cuam tshuam ntawm cov roj thiab kev thauj mus los, uas tau txais txiaj ntsig zoo rau qhov ntev-}} term khaws cia ntawm pub.
2.4 Txhim kho Palatability thiab zom
Cov khoom noj khoom haus cov khoom noj yog me me, crispy, thiab emit caramelized aroma, txhim kho Palatability. Lub Extruded pub cov ntaub ntawv xoob thiab cov kev sib tw tsis zoo rau cov enzymes, thiab kev txhawb nqa ntawm cov enzymes, yog kev txhim kho ntawm cov khoom noj, yog li txhim kho qhov zom zom zaub mov.
2.5 Txhim kho cov solubility fiber ntau
Extrusion - Kev nthuav dav tuaj yeem txo cov ntsiab lus fiber ntau hauv kev pub. Dhau ntawm Extrusion - Kev nthuav tawm thev naus laus zis, rhuav tshem qee cov txheej txheem hydrogenity, ua rau cov txheej txheem hydrogeny heltantle, Ib qho ntxiv, qee cov tshuaj zom zom tau tso tawm, yog li txhim kho tus nqi ntawm kev siv.
2.6 Nws yog qhov tseem ceeb rau pub cia thiab nthuav tawm lub txee lub neej ntawm pub
Raws li cov kev cuam tshuam ntawm qhov kub siab, siab thiab extrusion, yog li kev txhim kho qhov tshwm sim ntawm tsiaj raws plab, roj av, thiab lwm yam kab mob.
3 Qhov Tsis Zoo ntawm Extrusion Tshuab
Thaum lub sij hawm ua cov txheej txheem extrusion, cov maiillard kev tawm tsam tshwm sim ntawm kev txo cov piam thaj thiab cov amino acids uas tsis pub noj, ua rau muaj kev txo qis ntawm cov amino acids. Raws li cov kev cuam tshuam ntawm qhov kub siab, kev kub siab txhuam, thiab cov dej paug, tshwj xeeb} Soluble vitamins, tuaj yeem ncav cuag li 50%. Yog li, ntxiv cov vitamins yuav tsum tau ntxiv thaum yug tsiaj kom them nyiaj rau kev poob los ntawm extrusion.
4. Daim ntawv thov ntawm extrusion tshuab hauv tsiaj ntau lawm
4.1 npua ua liaj ua teb
Vim yog lawv lub plab me me thiab qaug zog plab hnyuv ntxig thiab qaug zog, nqus cov npua yog qhov muaj txiaj ntsig zoo rau cov kua mis los pub. Kev pub uas tsis tau muaj gelatinized thiab tsis yog kom muaj zog kom muaj zog tuaj yeem yooj yim ua rau muaj kev ntxhov siab ntawm cov plab ntawm cov piglets, ua rau raws plab thiab xoob quav. Cov khoom lag luam nthuav dav tau txo qhov tshwm sim ntawm Dawv Zawv plab thaum noj cov nqi pub mis, yog lub sijhawm txo qis, thiab txhim kho kev lag luam ua haujlwm.
4.2 Nqaij Qaib Nqis
Cov extruded pub yog nyob rau hauv daim ntawv granular, uas yog conducive rau kev pub mis ntawm qaib thiab cov os. Nws nce cov hnav tus nqi ntawm cov pub nyob hauv cov qoob loo, ua kom nrawm dua cov plab zom mov thiab nqus ntawm kev pub noj, thiab txhim kho tus nqi ntawm kev siv. Txij li thaum muab cov kab mob extruded tua cov kab mob ntau ntawm cov kab mob pathogenic, nws txo cov kab mob xws li raws plab nyob rau hauv nqaij qaib.
4.3 ruminant pub
Vim tias qhov kev cuam tshuam ntawm fiber ntau hauv kev pub, soluble fiber nce, yog li txhim kho lub plab zom mov thiab siv kev pub mis ntawm pub los ntawm ruminants. Extrusion technology tuaj yeem txhim kho tus nqi ntawm tsis yog-}}}}} protein nitrogen los, yog li ua tiav cov txiaj ntsig txo cov nqi pub mis. Extruded pub kuj tseem tuaj yeem txhim kho cov mis nyuj haus tsawg ntawm cov nyuj thiab muaj qhov cuam tshuam loj heev ntawm fattening beef nyuj.