• Dab tsi yog Chitosan?
Chitosan(CS) yog qhov thib ob loj tshaj plaws ntawm polysaccharide nyob rau hauv cov xwm, feem ntau yog muab rho tawm los ntawm lub plhaub ntawm crustaceans xws li cws thiab crab. Nws cov khoom siv raw chitin suav txog li 27% ntawm cw thiab crab ua pov tseg, thiab thoob ntiaj teb cov khoom tsim tawm txhua xyoo tshaj 13 lab tons. Kev rho tawm ib txwm xav tau peb txheej txheem: acid leaching decalcification (solving calcium carbonate), alkaline boiling kom tshem tawm cov protein, thiab 40-50% concentrated alkali deacetylation, thiab thaum kawg tau txais cov khoom dawb nrog deacetylation degree ntau dua 70%.
Kev tawg nyob rau hauv xyoo tas los no yog kev txhim kho ntawm fungal chitosan: chitosan muab rho tawm los ntawm cov kab mob xws li Ganoderma lucidum los ntawm txoj kev enzymatic muaj deacetylation degree ntau dua 85%, ib qho hnyav molecular ntawm tsuas yog 1/3 ntawm cov cw thiab crab (kwv yees li 8-66kDa), thiab tsis muaj allergenic proteins, thiab cellat compatibility zoo. Pab pawg ntawm Suav Academy ntawm Kev Tshawb Fawb Txog Kev Ua Liaj Ua Teb tau txheeb xyuas tias cov txheej txheem fungus-chitosan hybrid extraction tuaj yeem tswj tau qhov hnyav ntawm molecular sib txawv hauv ± 5%, daws qhov teeb meem ntawm kev hloov pauv raws caij nyoog hauv marine raw khoom.
• Cov txiaj ntsig ntawm dab tsiChitosan ?
Cov kev sib tw tseem ceeb ntawm chitosan los ntawm cov amino thiab hydroxyl dawb pab pawg ntawm nws cov saw molecular, tsim ib qho tshwj xeeb "molecular toolbox":
Intelligent Responsiveness:amino protonation tso cai rau chitosan yaj nyob rau hauv ib puag ncig acidic, ua tiav pH-tswj tso tawm (xws li kev tso tawm ntawm cov tshuaj tiv thaiv kab mob doxorubicin ntawm pH 5.0 nyob rau hauv cov qog microenvironment yog 7.3 npaug ntawm lub cev ib puag ncig);
Biological Adhesion:tus nqi zoo ua ke nrog cov nqi tsis zoo ntawm cov mucosa kom ntev lub sijhawm khaws cov tshuaj hauv qhov ncauj thiab plab hnyuv, thiab mucosal adhesion yog nce 3 zaug tom qab kev hloov kho thiolation;
Ecological Synergy:Chitosan tuaj yeem degraded tag nrho los ntawm lysozyme (cov qauv deacetylation siab poob 78% qhov hnyav hauv 72 teev), thiab cov khoom degradation koom nrog hauv av carbon thiab nitrogen voj voog.
Antibacterial Mechanism yog qhov tshwj xeeb tshaj yog:Tsawg molecular hnyav chitosan rhuav tshem cov kev ncaj ncees ntawm cov kab mob hauv daim nyias nyias, thiab txoj kab uas hla ntawm thaj tsam inhibition rau Escherichia coli thiab Staphylococcus aureus yog 13.5 hli; nws lub peev xwm antioxidant tuaj yeem ua rau tsis zoo rau cov pa reactive uas tsim los ntawm kev siv tshuaj tua kab, txo cov ntsiab lus malondialdehyde ntawm spinach kho nrog chlorpyrifos los ntawm 40%.
• Dab tsi yog Daim Ntawv Thov NtawmChitosan?
1. Biomedicine: Los ntawm Sutures rau Mrna Tshuaj Tiv Thaiv
Kev xa khoom ntse: Kev hloov pauv tau zoo ntawm CS/pDNA nanocomplex yog 2 qhov kev txiav txim siab siab dua li ntawm liposomes, dhau los ua qhov nyiam tshiab ntawm cov neeg nqa khoom tsis muaj kab mob;
Kev kho qhov txhab: Ganoderma lucidum chitosan-glucan composite gel shortens lub sij hawm coagulation los ntawm 50%, thiab cov qauv peb-dimensional ntxeem tau accelerates lub regeneration ntawm granulation ntaub so ntswg;
Cov tshuaj tiv thaiv kev ruaj ntseg: Chitosan khov-dried tiv thaiv tus neeg saib xyuas ua rau kev ua haujlwm ntawm cov tshuaj tiv thaiv mRNA tshaj 90% ntawm chav tsev kub, daws qhov teeb meem ntawm kev thauj mus los txias.
2. Kev Ua Liaj Ua Teb Ntsuab: Qhov Tseem Ceeb Ntawm Ecological Los txo kev siv chiv
Chitosan-coated tswj-tso chiv (CRFs) nce efficiency los ntawm triple mechanisms:
Lub hom phiaj tso tawm: Graphene oxide / chitosan nanofilms tsis tu ncua tso nitrogen rau 60 hnub hauv cov av acidic, thiab kev siv tus nqi yog 40% siab dua li cov sulfur-coated urea;
Cov qoob loo kev ntxhov siab: Inducing nroj tsuag los ua ke chitinase, txiv lws suav tawm los ntawm 22%, thaum txo tus nqi ntawm O₂⁻ ntau lawm;
Kev txhim kho av: Ua kom cov ntsiab lus organic ntxiv los ntawm 1.8 npaug, nthuav cov zej zog actinomycete los ntawm 3 zaug, thiab degrade tag nrho hauv 60 hnub yam tsis muaj qhov seem.
3. Ntim Cov Khoom Noj: Kev Tiv Thaiv Kev Tiv Thaiv Kab Kab Protein Composite Film
Pab pawg innovation ntawm Suav Academy ntawm Agricultural Sciences ua kechitosanNrog rau plua plav protein thiab loaded propolis ethanol extract:
Mechanical zog: tensile zog nce 200%, thiab dej vapor barrier mus txog 90% ntawm roj av-raws li films;
Kev ua haujlwm ntawm cov kab mob: cov kab mob tua kab mob ntawm cov kab mob strawberry spoilage tshaj 99%, lub txee lub neej txuas ntxiv mus rau 14 hnub, thiab tus nqi biodegradation yog 100%.
4. Textile Printing Thiab Dyeing: Lub Ntuj Tshuaj Rau Antistatic Polyester
Los ntawm kev kho kom txo qis alkali, cov pits thiab carboxyl pawg yog tsim rau ntawm polyester nto. Tom qab chitosan yog cross-linked nrog tartaric acid:
Kev tiv thaiv tsis tu ncua: qhov kev tiv thaiv raug txo los ntawm 10¹²Ω mus rau 10⁴Ω, thiab cov dej noo rov qab nyob ntawm 6.56% tom qab 30 ntxuav;
Heavy hlau adsorption: Cu²⁰ chelation efficiency hauv luam ntawv thiab dyeing dej khib nyiab yog> 90%, thiab tus nqi yog 1/3 ntawm hluavtaws cob.
•NEWGREEN Muab Khoom ZooChitosanHmoov
Post lub sij hawm: Jul-03-2025
