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Effect of thermal and ultrasonic pretreatment on lactic acid fermentation of food waste

dc.contributor.authorPau, Simone
dc.contributor.authorTan, Lea Chua
dc.contributor.authorArriaga García, Sonia Lorena
dc.contributor.authorLens, Piet NL
dc.date.accessioned2024-05-30T21:28:45Z
dc.date.available2024-05-30T21:28:45Z
dc.date.issued2023
dc.identifier.citationPau S, Tan LC, Arriaga Garcia SL, Lens PN. Effect of thermal and ultrasonic pretreatment on lactic acid fermentation of food waste. Waste Management & Research. 2023;41(3):566-574. doi:10.1177/0734242X221126425
dc.identifier.urihttp://hdl.handle.net/11627/6588
dc.description.abstractFood waste (FW) generation has become one of the largest environmental concerns for human society. Thanks to its chemical features and its high biodegradability, FW can be used as starting platform to produce biocommodities. Lactic acid (LA) is one of those chemicals that is gaining the attention of industry and research for its important role in polylactic acids production. To exploit better the organic content of FW, several FW pretreatments have been proposed in the literature, though none of them were aimed at influencing LA fermentation. Thermal and ultrasonic pretreatment effects on solubilization rates and LA production yields have been investigated in this batch study. The highest solubilization rate was achieved with 30?minutes ultrasonic pretreated FW resulting in a 15% increment in soluble COD (sCOD). The highest LA yield was obtained after 90-minute thermal pretreatment at 80 and 100°C at a yield of 0.49?g LA•g COD?1. This study shows that ultrasonic pretreatment generally performed better than thermal pretreatment when considering the increase in sCOD but caused a reduction in LA concentrations and yields after fermentation with high production of ethanol. The opposite trend was recorded in the thermal pretreated incubations, in which LA was present for 50% of the sCOD with higher LA concentrations of 2.90?g COD•L?1.
dc.publisherSAGE
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBiotechnologies
dc.subjectFermentation
dc.subjectLactic acid
dc.subjectFood waste
dc.subjectValorization
dc.subjectThermal pretreatment
dc.subjectUltrasonic pretreatment
dc.subjectHydrolysis
dc.subject.classificationBIOTECNOLOGÍA
dc.titleEffect of thermal and ultrasonic pretreatment on lactic acid fermentation of food waste
dc.typearticle
dc.identifier.doihttps://doi.org/10.1177/0734242X221126425
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional