2021
DOI: 10.1021/acssuschemeng.1c01706
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Identifying Forage Sorghum Ideotypes for Advanced Biorefineries

Abstract: Forage sorghum is a promising feedstock for the production of biofuels and bioproducts because it is drought tolerant, high-yielding, and familiar to farmers across the world. However, sorghum spans a diverse range of phenotypes, and it is unclear which are most desirable as bioenergy feedstocks. This paper explores four forage sorghum types, including brown-midrib (bmr), non-bmr, photoperiod sensitive (PS), and photoperiod insensitive (non-PS), from the perspective of their impact on minimum bioethanol sellin… Show more

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Cited by 14 publications
(13 citation statements)
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References 28 publications
(65 reference statements)
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“…The lignocellulosic sugar cost of $221/bdt in the optimal future case could be reduced to $213/bdt by minimizing the transportation of the engineered biomass sorghum, selecting a sorghum variety with high carbohydrate content (70 wt %) and low lignin (9.8 wt %), and optimizing yields and process conditions for sugar production. Field trial and compositional analysis data suggests that these are achievable, particularly in some high-yielding nonphotoperiod sensitive sorghum varieties . These improvements result in a $1.4/L-Jet-A eq minimum DMCO selling price if the Raney nickel-based hydrogenation process is used.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The lignocellulosic sugar cost of $221/bdt in the optimal future case could be reduced to $213/bdt by minimizing the transportation of the engineered biomass sorghum, selecting a sorghum variety with high carbohydrate content (70 wt %) and low lignin (9.8 wt %), and optimizing yields and process conditions for sugar production. Field trial and compositional analysis data suggests that these are achievable, particularly in some high-yielding nonphotoperiod sensitive sorghum varieties . These improvements result in a $1.4/L-Jet-A eq minimum DMCO selling price if the Raney nickel-based hydrogenation process is used.…”
Section: Resultsmentioning
confidence: 99%
“…Field trial and compositional analysis data suggests that these are achievable, particularly in some high-yielding nonphotoperiod sensitive sorghum varieties. 39 These improvements result in a $1.4/L-Jet-A eq minimum DMCO selling price if the Raney nickel-based hydrogenation process is used. In this case, the sugar depot would need to be located near the sorghum field (trucking distance of 33 km or ∼20 miles) and sugar yield must be increased to 98% of the theoretical yield at a low IL loading rate of 2.5 wt % and an enzyme loading rate of 7 mg of protein per g of glucan (SI, Figure S2).…”
Section: Resultsmentioning
confidence: 99%
“…3 ). Although higher biomass yields are typically obtained at the mature stage, the soft dough stage represents the harvest time for silage and several studies have highlighted the economic potential of using forage sorghum for biorefinery applications ( Magurudeniya et al, 2021 ; Yang et al, 2021 ). Line Eng-2, which showed higher 4-HBA titers compared to Eng-1, could be further engineered to enhance 4-HBA content.…”
Section: Discussionmentioning
confidence: 99%
“…Field trial and compositional analysis data suggests that these are achievable, particularly in some highyielding non-photoperiod sensitive sorghum varieties. 38 These improvements result in a $1.4/L-Jet-Aeq minimum DMCO selling price of DMCO with the Raney nickel-based hydrogenation process. In this case, the sugar depot would need to be located near the sorghum field (trucking distance of 33 km or ~20 miles) and sugar yield must be increased to 98% of the theoretical yield at a low IL loading rate of 2.5 wt% and an enzyme loading rate of 7 mg of protein per g of glucan (SI-Fig.…”
Section: Minimum Selling Price Of Dmcomentioning
confidence: 99%