Unprecedented glucose production using auto-catalytic hydrothermal hydrolysis of lignocellulosic biomass with no catalyst addition

04 August 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


We propose a novel and simple glucose production method involving autocatalytic hydrothermal hydrolysis of biomass without catalyst additives. This method consists of air-oxidation at a relatively lower temperature than that of the conventional method and subsequent hydrothermal hydrolysis. Japanese cedar (indigestible softwood) was initially air–oxidized by heating at 180–200 °C for 3 h. This induced the decomposition of a small portion of cellulose in the cedar sample, although 93.4% of cellulose remained at 200 °C. The functional acidic groups (phenol, lactonic, and carboxy groups) specifically increased during the initial air–oxidation. Following this, the acidic groups autocatalytically accelerated hydrothermal cellulose hydrolysis, resulting in a maximum glucose yield of 139.6 mg/g raw material at a severity factor (R0) of 3.2 × 104. Keywords: Cellulose hydrolysis, Oxidation, Glucose production, Hot compressed water, Hydrothermal treatment


Cellulose hydrolysis
Glucose production
Hot compressed water
Hot compressed water
Hydrothermal treatment


Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.