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Dry extrusion pretreatment of cassava starch aided by sugarcane bagasse for improved starch saccharification.
- Source :
-
Carbohydrate Polymers . Jun2022, Vol. 285, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- 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. [Display omitted] [ABSTRACT FROM AUTHOR]
- Subjects :
- *CASSAVA starch
*BAGASSE
*SUGARCANE
*TRICHODERMA reesei
*STARCH
*GELATION
Subjects
Details
- Language :
- English
- ISSN :
- 01448617
- Volume :
- 285
- Database :
- Academic Search Index
- Journal :
- Carbohydrate Polymers
- Publication Type :
- Academic Journal
- Accession number :
- 155724184
- Full Text :
- https://doi.org/10.1016/j.carbpol.2022.119256