Qhov sib txawv tseem ceeb ntawm lignin thiab suberin yog lignin yog phenolic biopolymer, whereas suberin yog polyester biopolymer.
Lignin thiab suberin yog cov biopolymer complex uas muaj nyob rau hauv cov nroj tsuag ntau dua epidermis thiab periderm raws li cov qauv tsim. Ob qho no yog cov khoom tseem ceeb hauv cov nroj tsuag, feem ntau hauv cov nroj tsuag siab dua.
Lignin yog dab tsi?
Lignin yog cov khoom sib txuas phenolic polymer uas tsim cov ntaub ntawv tseem ceeb hauv cov ntaub so ntswg ntawm cov nroj tsuag xws li vascular nroj tsuag thiab algae. Cov tshuaj no tseem ceeb heev hauv kev tsim cov phab ntsa ntawm tes hauv cov ntoo thiab cov tawv ntoo ntawm tsob ntoo. Qhov no yog vim lignin yog ib qho nyuaj heev, thiab nws tsis ua rau rotting yooj yim.
Cov muaj pes tsawg leeg ntawm lignin hauv ib tsob nroj tuaj yeem sib txawv ntawm ib hom nroj tsuag mus rau lwm qhov. Piv nrog rau lwm cov biopolymers, lignin txawv vim nws qhia heterogeneity thiab tsis muaj cov qauv tseem ceeb. Lignin yog ib qho hydrophobic, thiab nws yog nplua nuj nyob rau hauv aromatic subunits. Txawm li cas los xij, nws tsis yooj yim los ntsuas qhov degree ntawm polymerization hauv lignin vim yog cov qauv sib txuas thiab nws cov xwm txheej.
Daim duab 01: Kev Ua Haujlwm Zoo ntawm Lignin
Lignin tuaj yeem sau qhov chaw nyob nruab nrab ntawm cellulose, hemicellulose, thiab pectin Cheebtsam hauv cov phab ntsa ntawm tes. Lignin tshwj xeeb tshaj yog muaj nyob rau hauv vascular thiab txhawb cov ntaub so ntswg hauv cov nroj tsuag. Feem ntau, lignin tuaj yeem pom muaj khi rau hemicellulose covalently. Qhov kev sib txuas ntawm qhov sib txawv ntawm polysaccharides thiab lignin ua rau lub cell phab ntsa ntxiv zog.
Tsis tas li ntawd, lignin yog hydrophobic, uas tseem ceeb heev hauv kev thauj dej los ntawm cov hlab ntsha. Txij li feem ntau cov polysaccharides yog hydrophilic thiab permeable rau dej, nws yog ib qho tseem ceeb uas yuav tsum muaj lignin nyob rau hauv lub cell phab ntsa los npog tag nrho cov leakage los ntawm lub xylem hlab ntsha phab ntsa.
Suberin yog dab tsi?
Suberin yog ib hom biopolymer uas muaj cov qauv tshuaj polyester. Nws ntog nyob rau hauv qeb ntawm cov nroj tsuag ntau dua epidermis thiab periderm cell-wall macromolecules nrog rau lignin thiab cutin. Cov tshuaj no yog ib qho tseem ceeb hauv kev ua kom muaj kev tiv thaiv kab mob. Qhov no polyester biopolymer yog lipophilic, thiab nws muaj cov chains ntev ntawm fatty acids. Vim nws qhov xwm txheej lipophilic, cov macromolecules tuaj yeem txuas mus rau lipid thiab carbohydrate molecules. Peb tuaj yeem pom cov suberin hauv cork ntawm cov nroj tsuag. Lub luag haujlwm tseem ceeb ntawm suberin hauv cov nroj tsuag yog los npaj kev tiv thaiv kev tiv thaiv rau cov dej thiab cov kuab tshuaj.
Daim duab 02: Kev tso tawm ntawm Suberin
Thaum xav txog cov muaj pes tsawg leeg ntawm suberin, nws muaj ob lub ntsiab tseem ceeb xws li polyaromatic domain thiab polyaliphatic domain. Lub polyaromatic domain nyob rau hauv thawj cell phab ntsa, thaum lub polyaliphatic domain tuaj yeem pom nyob rau hauv nruab nrab ntawm cov thawj cell phab ntsa thiab cell membrane.
Qhov txawv ntawm Lignin thiab Suberin yog dab tsi?
Lignin thiab suberin yog cov khoom tseem ceeb hauv cov nroj tsuag. Qhov sib txawv tseem ceeb ntawm lignin thiab suberin yog tias lignin yog phenolic biopolymer, whereas suberin yog polyester biopolymer.
Peb tuaj yeem pom lignin feem ntau hauv cov tawv ntoo thiab ntoo ntawm cov ntoo thaum suberin muaj nyob hauv cov cork ntawm cov nroj tsuag. Thaum xav txog cov qauv ntawm tes, lignin tuaj yeem pom nyob rau hauv qhov chaw nruab nrab ntawm cellulose, hemicellulose, thiab pectin nyob rau hauv cov phab ntsa ntawm tes whereas suberin tuaj yeem pom nyob rau hauv thawj phab ntsa ntawm tes thiab nruab nrab ntawm cov phab ntsa ntawm cov cell thiab cell membrane. Yog li, qhov sib txawv ntawm lignin thiab suberin.
Hauv qab infographic qhia txog qhov sib txawv ntawm lignin thiab suberin.
Summary – Lignin vs Suberin
Lignin thiab suberin yog biopolymers uas yog ib qho tseem ceeb raws li cov qauv hauv cov nroj tsuag. Qhov sib txawv tseem ceeb ntawm lignin thiab suberin yog tias lignin yog phenolic biopolymer, whereas suberin yog polyester biopolymer.
