Comparison of acid and hydrothermal pretreatments of date waste for value creationShow others and affiliations
2024 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 14, p. 1-14, article id 18056
Article in journal (Refereed) Published
Abstract [sv]
The production of date syrup yields a substantial amount of date press cake (DPC), fibrous and moisturising material with great potential for generating value through bioprocessing. However, the recalcitrant structure of DPC affects the yield of products in bioprocesses. To boost the accessibility of the structure as well as increase the soluble fraction of carbohydrates and facilitate further enzymatic hydrolysis, hydrothermal and dilute acid (0.5% (v/v) sulfuric acid) pretreatments as cost-effective and feasible methods were applied on DPC at relatively low temperatures (80, 100, 120 and 140 degrees C) and reaction times (60 and 90 min). The success in pretreatment was then evaluated by a post-enzymatic treatment using an enzyme cocktail of cellulases and hemicelluloses. Based on total accessible sugar with minimum produced inhibitors, an optimal operating condition was considered acid pretreatment at 120 degrees C for 90 min with a 55.02% increase in total sugar yield. To explore the potential use of pretreated DPC, an anaerobic digestion was conducted on untreated and acid-pretreated DPC at 120 degrees C for 90 min. The results showed that pretreatment increased the total bioproduct yield, including hydrogen, ethanol, and volatile fatty acid yields, by 59.75%. This demonstrates the significant impact of pretreatment on product yields in a bioprocess.
Place, publisher, year, edition, pages
Springer Nature, 2024. Vol. 14, p. 1-14, article id 18056
Keywords [en]
Acid pretreatment, Anaerobic digestion, Date press cake, Enzymatic hydrolysis, Fermentable sugar, Hydrothermal pretreatment
National Category
Bioprocess Technology Food Engineering
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-32395DOI: 10.1038/s41598-024-68879-6ISI: 001284942100068Scopus ID: 2-s2.0-85200490445OAI: oai:DiVA.org:hb-32395DiVA, id: diva2:1890762
2024-08-202024-08-202024-10-01Bibliographically approved