本文二维码信息
二维码（扫一下试试看！）
Effects of Acetic Acid Pretreatment on Enzymatic Saccharification and Physicochemical Properties of Acacia
Received:December 07, 2024  
DOI：10.11980/j.issn.0254-508X.2025.05.004
Key Words:Acacia  acetic acid pretreatment  enzymatic saccharification  physicochemical properties
Fund Project:广东省普通高校重点科研平台项目（2022KCXTD035）；广州科技职业技术大学2024年度校级科研项目（2024LG17）。
Author NameAffiliationPostcode
LIU Mi* Guangzhou Vocational University of Science and Technology, Guangzhou, Guangdong Province, 510550 510550
CHI Congcong College of Light Industry Science & Engineering,Shaanxi Key Lab of Papermaking Technology & Specialty Paper, Shaanxi University of Science & Technology, Xi’an, Shaanxi Province, 710021 710021
Hits: 3170
Download times: 1014
Abstract:The effects of pretreatment temperature， acetic acid dosage， and the number of revolutions of PFI refining on the enzymatic hydrolysis saccharification rate of Acacia were investigated through acetic acid pretreatment of wood chips， three-stage refining， and PFI refining in this study. Additionally， XRD， SEM and TG-IR were used to analyze the structure of Acacia before and after pretreatment. The results showed that acetic acid pretreatment could significantly increase the reducing sugar yield and solid content in the acetic acid extract of Acacia. When the acetic acid dosage was the same （e.g. HAC5）， as the pretreatment temperature increased from 140 ℃ to 170 ℃， the solid content in the pretreatment extract increased from 4.4% to 16.5%， and the reducing sugar yield increased from 2.4% to 13.2%. When the pretreatment temperature was 170 ℃， as the acetic acid dosage increased from 0 to 9%， the solid content in the pretreatment solution increased from 16.1% to 16.8%， and the reducing sugar yield increased from 11.7% to 13.4%. In addition， under certain conditions， the higher the pretreatment temperature， the greater the acetic acid dosage， or the more the number of revolutions of PFI refining， the higher the total reducing sugar yield in the pretreatment and enzymatic hydrolysis conversion processes， and the higher the mass loss rate of the corresponding raw materials. Considering the economic cost savings and environmental protection factors comprehensively， the most suitable conditions for the pretreatment of Acacia were the temperature of 170 ℃， the volume fraction of acetic acid of 5%， and 5 000 revolutions of PFI refining.
View Full Text  HTML  View/Add Comment  Download reader