Skip to main content
AMERICAN SOCIETY OF
BREWING CHEMISTS

DEI Image
Join | Renew | Contact | Log In
Search
  • About
    • Research Council
    • Directories
    • DEI Resources
    • Social Media Kit
    • Contact Us
  • Membership
    • My ASBC Account
    • Join
    • Renew
    • ASBC Connect Community
    • Job Center
    • Student Resources
    • Awards
    • Volunteer
    • Apply for Funding
    • Corporate Membership
  • Methods
    • Methods of Analysis
    • About
    • Tools
    • FAQ
    • Subscription Options
  • In the Lab
    • Methods Videos
    • Lab Proficiency Program
    • Reference Materials and Gauges
    • Fishbone References
    • Grow Your Own Lab
    • Sensory Analysis
    • Sampling Plan
    • Green Chemistry
  • PublicationsCurrently selected
    • Journal
    • Books
    • Technical Committee Reports
    • Advertise
  • Events
    • Brewing Summit 2025
    • Webinars
    • WBC Rewind
    • Meeting Archives
  • Store
Skip navigation links
2017
2016
2015
1977-2014
American Society of Brewing ChemistsPublicationsJournalVolume Years2015

Display Title
Optimizing Semisimultaneous Saccharification and Fermentation for Ethanol Production from Chinese Distiller’s Spent Grains






Page Content
​Spent grains are a main byproduct for Chinese liquor production. In this study, the semisimultaneous saccharification and fermentation (S-SSF) for ethanol production based on multi-enzyme degradation of the spent grains was investigated. After optimization with orthogonal design ex­periments, an enzyme combination composed of cellulase NS22086 at 0.30 mL/g, β-glucosidase NS22118 at 0.20 mL/g, xylanase NS22083 at 0.08 mL/g, complex enzyme NS22119 at 0.08 mL/g, complex enzyme NS22002 at 0.02 mL/g, and glucoamylase NS22035 at 0.01 mL/g was obtained. With 14% of the substrate concentration and the optimal en­zyme combination, reducing sugar, glucose, and xylose at 109.97, 60.02, and 16.05 g./L, respectively, were attained in the saccharified solution, which are approximately fourfold of those obtained before optimizing and are among the highest values reported for different lignocellulosic materials. Experiments of batch and fed-batch S-SSF for ethanol produc­tion from the spent grains were then performed, and higher efficiency of saccharification and ethanol formation was observed in the fed-batch S‑SSF, where an ethanol concentration of over 30 g/L was attained. Ki­netic models satisfactorily describing the processes of S-SSF were devel­oped and analyzed. This study contributes to the utilization of Chinese distiller’s spent grains and other similar materials. Keywords: Bioethanol, Distiller’s spent grains, Kinetic modeling, Semi­simultaneous saccharification and fermentation (S-SSF)

About

Join

Contact

Advertise

Privacy Policy

Email Deliverability