Soft Microwave Pretreatment to Extract P-Hydroxycinnamic Acids from Grass Stalks

The aim of this article is to provide an analysis of microwave effects on ferulic and coumaric acids (FA and CA, respectively) extraction from grass biomass (corn stalks and miscanthus). Microwave pretreatment using various solvents was first compared to conventional heating on corn stalks. Then, microwave operational conditions were extended in terms of incident power and treatment duration. Optimal conditions were chosen to increase p-hydroxycinnamic acids release. Finally, these optimal conditions determined on corn stalks were tested on miscanthus stalks to underlie the substrate incidence on p-hydroxycinnamic acids release yields. The optimal conditions—a treatment duration of 405 s under 1000 W—allowed extracting 1.38% FA and 1.97% CA in corn stalks and 0.58% FA and 3.89% CA in miscanthus stalks. The different bioaccessibility of these two molecules can explain the higher or lower yields between corn and miscanthus stalks. View Full-Text

Keywords: microwave pretreatment; grass biomass; p-hydroxycinnamic acids extraction

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Bichot, A.; Lerosty, M.; Geirnaert, L.; Méchin, V.; Carrère, H.; Bernet, N.; Delgenès, J.-P.; García-Bernet, D. Soft Microwave Pretreatment to Extract P-Hydroxycinnamic Acids from Grass Stalks. Molecules 2019, 24, 3885. https://doi.org/10.3390/molecules24213885

AMA Style

Bichot A, Lerosty M, Geirnaert L, Méchin V, Carrère H, Bernet N, Delgenès J-P, García-Bernet D. Soft Microwave Pretreatment to Extract P-Hydroxycinnamic Acids from Grass Stalks. Molecules. 2019; 24(21):3885. https://doi.org/10.3390/molecules24213885

Chicago/Turabian Style

Bichot, Aurélie, Mickaël Lerosty, Laureline Geirnaert, Valérie Méchin, Hélène Carrère, Nicolas Bernet, Jean-Philippe Delgenès, and Diana García-Bernet. 2019. "Soft Microwave Pretreatment to Extract P-Hydroxycinnamic Acids from Grass Stalks" Molecules 24, no. 21: 3885. https://doi.org/10.3390/molecules24213885

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Soft Microwave Pretreatment to Extract P-Hydroxycinnamic Acids from Grass Stalks

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