2019 journal article

Two-stage autohydrolysis and mechanical treatment to maximize sugar recovery from sweet sorghum bagasse

BIORESOURCE TECHNOLOGY, 276, 140–145.

By: B. Koo *, J. Park n, R. Gonzalez n , H. Jameel n & S. Park n 

co-author countries: Korea (Republic of) πŸ‡°πŸ‡· United States of America πŸ‡ΊπŸ‡Έ
author keywords: Two-stage autohydrolysis; Sweet sorghum bagasse; Free sugars; Mechanical refining; Enzyme accessibility
MeSH headings : Cellulose / metabolism; Fermentation; Hydrolysis; Sorghum / metabolism; Sugars / metabolism
Source: Web Of Science
Added: February 18, 2019

Modified autohydrolysis combined with mechanical refining has been suggested to recover free sugars from sweet sorghum bagasse and facilitates enzyme access to cellulose in bagasse for enhancing its conversion to fermentable sugars. The amount of total available sugars in sweet sorghum bagasse was found to be 76.1% and this value was used to evaluate the efficiency of the process suggested. Total sugar recovery was achieved up to 68.1% through the single-stage autohydrolysis at 170 Β°C for 60 min, followed by mechanical refining and enzymatic hydrolysis; however, the sugar recovery through partial degradation of free sugars induced by high-temperature autohydrolysis was lower than expected. A modified two-stage autohydrolysis was suggested to prevent sugar degradation and the total sugar recovery using this process reached 83.9% of total available sugars in sweet sorghum bagasse.