生物质化学工程
生物質化學工程
생물질화학공정
Biomass Chemical Engineering
2015年
6期
27-30
,共4页
王进%韩素芳%张飞英%刘亚群
王進%韓素芳%張飛英%劉亞群
왕진%한소방%장비영%류아군
山核桃外果皮%漆酶活化%SEM%FT-IR%13C NMR
山覈桃外果皮%漆酶活化%SEM%FT-IR%13C NMR
산핵도외과피%칠매활화%SEM%FT-IR%13C NMR
cathay hickory ectocarp%laccase activation%FT-IR%13C NMR%SEM
为高效利用山核桃外果皮资源,对山核桃外果皮进行了漆酶改性处理。测定了改性处理前后样品的化学成分含量,采用SEM观测改性前后样品的微观结构,FT-IR和13C NMR分析改性处理前后样品的化学结构变化。结果表明：漆酶处理后,山核桃外果皮木质素和抽提物含量降低,粉末的分散效果更好,表面更多的木质素裸露出来。山核桃外果皮以愈创木基和紫丁香基结构单元为主的木质素结构单元,在漆酶处理过程中发生β-O-4断裂产生较多的活性氧类自由基,使山核桃外果皮表面获得较多的活性基团,从而具有更高的反应活性。
為高效利用山覈桃外果皮資源,對山覈桃外果皮進行瞭漆酶改性處理。測定瞭改性處理前後樣品的化學成分含量,採用SEM觀測改性前後樣品的微觀結構,FT-IR和13C NMR分析改性處理前後樣品的化學結構變化。結果錶明：漆酶處理後,山覈桃外果皮木質素和抽提物含量降低,粉末的分散效果更好,錶麵更多的木質素裸露齣來。山覈桃外果皮以愈創木基和紫丁香基結構單元為主的木質素結構單元,在漆酶處理過程中髮生β-O-4斷裂產生較多的活性氧類自由基,使山覈桃外果皮錶麵穫得較多的活性基糰,從而具有更高的反應活性。
위고효이용산핵도외과피자원,대산핵도외과피진행료칠매개성처리。측정료개성처리전후양품적화학성분함량,채용SEM관측개성전후양품적미관결구,FT-IR화13C NMR분석개성처리전후양품적화학결구변화。결과표명：칠매처리후,산핵도외과피목질소화추제물함량강저,분말적분산효과경호,표면경다적목질소라로출래。산핵도외과피이유창목기화자정향기결구단원위주적목질소결구단원,재칠매처리과정중발생β-O-4단렬산생교다적활성양류자유기,사산핵도외과피표면획득교다적활성기단,종이구유경고적반응활성。
In order to use the resources of the cathay hickory exocarp efficiently, the ectocarp powder was treated by laccase. The chemical compositions of the samples were determined, the microstructures of the lacasse treated and untreated ectocarp were observed by SEM, and the chemical structures of the samples were analyzed by using FT-IR and 13C NMR. The results showed that after laccase activation, the contents of lignin and extracts of cathay hickory ectocarps de creased and the powders were dispersed better, moreover, there was more exposed lignin on the surface. And the guaiacyl and syringyl lignin were degraded byβ-O-4 fracture, and meanwhile more reactive oxygen species free radicals produced. This made the ectocarp surface to obtain more active groups and had higher reaction activity.
