南投縣埔里鎮的筊白筍種植面積1,667公頃,佔台灣筊白筍總面積85.9 %及佔南投縣筊白筍面積96.2 %,為國內極為重要的筊白筍產地。本研究利用南投埔里地區之農業廢棄物筊白筍殼再利用,以農業廢棄物所含的木質纖維素最為生質酒精原料,文獻中並未利用筊白筍殼作為生質酒精之原料案例,因此本研究改良醣化技術破壞富含木質纖維素之筊白筍殼以提升產醣量。經由適當的前處理包括乾燥、破碎、研磨、過篩後,以不同醣化條件探討產醣量,並進一步分析醣化產物之組成、醣化副產物之影響及生質能源之效益,並決定最佳之醣化條件,作為後續發酵試驗參考之依據。傳統稀酸醣化方法之筊白筍殼於最佳的醣化條件下的總還原醣萃取量為19 %,為了改善傳統醣化方法,利用微波加熱法大幅降低反應時間從60分鐘縮短至3分鐘及產醣量提升至27 %。但一階段的醣化技術產醣量有限,本研究利用兩階段醣化技術提高產醣量及降低木質纖維素在酸性醣化條件下產生的副產物,在第一階段醣化使用較溫和較低的醣化條件,醣化較容易被破壞的半纖維素,再利用較高較強烈的醣化條件破壞更堅固的纖維素,在兩階段最佳條件下產醣量上升至55%,醣化液經HPLC檢測分析以木醣為主,每克的筊白筍殼轉換率為86.39 %,在加鐵醣化技術下副產物濃度減少73 %,使醣化達到更佳的產醣量,抑制副產物的產生以利後續發酵。
Energy shortage is one of the international knotty problems remaining to be solved .Research on bioethanol transformed from lignocelluloses is the frontline of biomass-based energy fields .The key from lignocelluloses to bioethanol is how to produce fermentable sugars effectively by hydrolysis of cellulose .Technologies of lignocellulose hydrolysis remain still to be developed .In this paper , research progress on chemical hydrolysis of lignocelluloses to produce fermentable sugars effectively is presented. This study studies the reuse of waste Water Bamboo Husks from the Nantou Puli. A number of previous studies determined dilute acid pretreatment conditions that maximize xylose yields from pretreatment or glucose yields from subsequent digestion of the pretreated cellulose, but our emphasis was on identifying conditions to realize the highest yields of both sugars from Two stages. Water Bamboo Husks in the optimal Saccharification conditions quantity of reducing sugar increase to 55%.