Enhanced lactic acid production from household food waste under hyperthermophilic conditions Mechanisms and regulation

Enhanced lactic acid production from household food waste under hyperthermophilic conditions : Mechanisms and regulation

Copyright © 2024. Published by Elsevier Ltd.

Détails bibliographiques
Publié dans:Waste management (New York, N.Y.). - 1999. - 178(2024) vom: 15. Apr., Seite 57-65
Auteur principal: Song, Liang (Auteur)
Autres auteurs: Cai, Chenhang, Lin, Chunxiang, Lv, Yuancai, Liu, Yifan, Ye, Xiaoxia, Liu, Minghua, Dai, Xiaohu
Format: Article en ligne
Langue:English
Publié: 2024
Accès à la collection:Waste management (New York, N.Y.)
Sujets:Journal Article Anaerobic fermentation Household food waste Hyperthermophilic condition Lactic acid Lactobacillus Lactic Acid 33X04XA5AT Food Loss and Waste RNA, Ribosomal, 16S
Description
Résumé:Copyright © 2024. Published by Elsevier Ltd.
An annual production of about 500 million tons of household food waste (HFW) has been documented, resulting in significant implications for human health and the environment in the absence of appropriate treatment. The anaerobic fermentation of HFW in an open system offers the potential to recover high value-added products, lactic acid (LA), thereby simultaneously addressing waste treatment and enhancing resource recovery efficiency. Most of LA fermentation studies have been conducted under mesophilic and thermophilic conditions, with limited research on the production of LA through anaerobic fermentation under hyperthermophilic conditions. This study aimed to produce LA through anaerobic fermentation from HFW under hyperthermophilic conditions (70 ± 1 °C), while varying pH values (5.0 ± 0.1, 7.0 ± 0.1, and 9.0 ± 0.1), and compare the results with LA production under mesophilic (35 ± 1 °C) and thermophilic (52 ± 1 °C) conditions. The findings of this study indicated that the combination of hyperthermophilic conditions and a neutral pH (pH7_70) yielded the highest concentration of LA, measuring at 17.75 ± 1.51 g/L. The mechanism underlying the high yield of LA at 70 °C was elucidated through the combined analysis of organics dissolution, enzymes activities, and 16S rRNA microbiome sequencing
Description:Date Completed 18.03.2024
Date Revised 18.03.2024
published: Print-Electronic
Citation Status MEDLINE
ISSN:1879-2456
DOI:10.1016/j.wasman.2024.02.010