Instant Catapult Steam Explosion: A rapid technique for detoxification of aflatoxin-contaminated biomass for sustainable utilization as animal feed

Hui XIE, Zhimin LI, Zhimin WANG, Guotao MAO, Hongsen ZHANG, Fengqin WANG, Hongge CHEN, Sen YANG, Yiu Fai TSANG, Su Shiung LAM, Andong SONG, Zhanying ZHANG

Research output: Contribution to journalArticle

Abstract

Instant Catapult Steam Explosion (ICSE) is a rapid and effective technique with ability to reduce the toxic compound and improve the cellulose digestibility of lignocellulosic biomass. It has beneficial feature of very short explosion time (<0.1 s) and high explosion power density (400–1000 order of magnitude density) compared to conventional explosion. In this study, ICSE was examined for its potential to degrade aflatoxin B₁ (AFB₁) in corn stalk in order to improve its utilization as a toxic-free animal feed. Incubation of AFB1-containing corn stalk followed by processing with ICSE at 2.4 MPa led to approximately 100% degradation of AFB₁ in 140 s of process time. The degradation of AFB₁ by ICSE led to generation of 5 products including C₁₇H₈O₆ (m/z 308), C₁₇H₁₄O₆ (m/z 314), C₁₆H₈O₅ (m/z 280), C₁₇H₁₄O₇ (m/z 330) and C₁₇H₁₆O₉ (m/z 364). Two degradation pathways were proposed and the first one involved hydrolysis, oxidation and dehydrogenation while the second consisted of dehydrogenation and decarbonylation. The toxicity of these products were found to be substantially less than that possessed by AFB₁. The study demonstrates that ICSE shows great promise as a rapid technique to detoxify aflatoxin-contaminated biomass for sustainable and safe utilization of agricultural biomass as animal feed. Copyright © 2020 Published by Elsevier Ltd.
Original languageEnglish
Article number120010
JournalJournal of Cleaner Production
Early online dateJan 2020
DOIs
Publication statusE-pub ahead of print - Jan 2020

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Aflatoxins
Detoxification
detoxification
Explosions
explosion
Animals
Biomass
Steam
animal
biomass
Dehydrogenation
Degradation
degradation
maize
Animal feed
Explosion
Aflatoxin
digestibility
Toxicity
cellulose

Citation

Xie, H., Li, Z., Wang, Z., Mao, G., Zhang, H., Wang, F., . . . Zhang, Z. (2020). Instant Catapult Steam Explosion: A rapid technique for detoxification of aflatoxin-contaminated biomass for sustainable utilization as animal feed. Journal of Cleaner Production. Advance online publication. doi: 10.1016/j.jclepro.2020.120010

Keywords

  • Instant catapult steam explosion
  • Aflatoxin B₁
  • Degradation
  • Corn stalk
  • Toxicity