awamori曲霉
蔗渣
淀粉
水解
化学
挤压
酶水解
结晶度
里氏木霉
食品科学
吸水率
核化学
发酵
生物技术
纤维素酶
生物化学
材料科学
冶金
生物
结晶学
复合材料
作者
Daniel Oluwagbotemi Fasheun,Raul Alves de Oliveira,Elba P. S. Bon,Ayla Sant’Ana da Silva,Ricardo Sposina Sobral Teixeira,Viridiana Santana Ferreira-Leitão
标识
DOI:10.1016/j.carbpol.2022.119256
摘要
The enzymatic hydrolysis of native starch lacks efficiency because starch is mostly confined in semi-crystalline granules. To address the challenges associated with gelatinization and render native cassava starch (CS) amenable to enzymatic hydrolysis (enzyme cocktail from Aspergillus awamori and Trichoderma reesei), dry-extrusion pretreatment of CS mixed with sugarcane bagasse (SB) was studied. Results showed that among the CS:SB mass ratios studied (1:1; 1:0.5 and 1:0.25), extruded CS:SB (1:0.25) gave the highest 3-hour glucose yield (71.5%) after enzymatic hydrolysis. Extrusion reduced CS:SB (1:0.25) crystallinity by 78% and increased the intensity of all major FTIR absorption bands by 67-202%. The optimum 3-hour glucose yield from extruded CS:SB (1:0.25) hydrolysis was 74.1%, which was 330% higher than from untreated CS. The water absorption and solubility indices of the treated biomass increased by 145% and 12,640%, respectively under the optimum conditions, aiding the hydrolysis process. The dry extrudates were easy to manipulate and store.
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