Kim, Kwang Ho Eudes, Aymerick Jeong, Keunhong Yoo, Chang Geun Kim, Chang Soo Ragauskas, Arthur 2024-01-19T19:33:20Z 2024-01-19T19:33:20Z 2021-09-02 2019-07 0027-8424 https://pubs.kist.re.kr/handle/201004/119777 Despite the enormous potential shown by recent biorefineries, the current bioeconomy still encounters multifaceted challenges. To develop a sustainable biorefinery in the future, multidisciplinary research will be essential to tackle technical difficulties. Herein, we leveraged a known plant genetic engineering approach that results in aldehyde-rich lignin via down-regulation of cinnamyl alcohol dehydrogenase (CAD) and disruption of monolignol biosynthesis. We also report on renewable deep eutectic solvents (DESs) synthesized from phenolic aldehydes that can be obtained from CAD mutant biomass. The transgenic Arabidopsis thaliana CAD mutant was pretreated with the DESs and showed a twofold increase in the yield of fermentable sugars compared with wild type (WT) upon enzymatic saccharification. Integrated use of low-recalcitrance engineered biomass, characterized by its aldehyde-type lignin subunits, in combination with a DES-based pretreatment, was found to be an effective approach for producing a high yield of sugars typically used for cellulosic biofuels and biobased chemicals. This study demonstrates that integration of renewable DES with plant genetic engineering is a promising strategy in developing a closed-loop process. English National Academy of Sciences Integration of renewable deep eutectic solvents with engineered biomass to achieve a closed-loop biorefinery Article 10.1073/pnas.1904636116 1 Proceedings of the National Academy of Sciences of the United States of America, v.116, no.28, pp.13816 - 13824 Proceedings of the National Academy of Sciences of the United States of America 116 28 13816 13824 N scie scopus 000474535700024 2-s2.0-85068557028 Multidisciplinary Sciences Science & Technology - Other Topics Article IMPROVED SACCHARIFICATION LIGNIN BIOSYNTHESIS DOWN-REGULATION IONIC LIQUIDS PRETREATMENT SOLUBILITY DEFICIENT GENES MAIZE HYDROXYCINNAMALDEHYDES green solvent bioenergy cinnamyl alcohol dehydrogenase lignocellulosic biomass