Compressive Forces and Harvest Time Effects on Sugars and Juice Extracted from Sweet Pearl Millet and Sweet Sorghum

Crépeau, Marianne; Khelifi, Mohamed; Vanasse, Anne; Séguin, Philippe; Tremblay, Gaëtan F.

doi:10.13031/trans.56.10271

Cited by 2 publications

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“…The whole sorghum stem water-soluble sugars composition was sucrose, glucose, and fructose with concentrations estimated, respectively, at 79.29, 199.22, and 196.08 g/kg DM ( Table 1 ). The sugar concentrations of sorghum variety subject to this study are much higher than those of the varieties experimented by Crépeau et al [ 30 ] whose concentrations were 2.4–34.9, 25.2–39.1, and 20.4–32.1 g/kg DM, respectively. However, it is much closer to those of the varieties experimented by Ostovareh et al [ 31 ], with, respectively, 121, 92, and 83 g/kg DM.…”

Section: Resultscontrasting

confidence: 57%

“…This concentration of total water-soluble sugar is much higher than that indicated by Djomdi et al [ 35 ] on the same variety (98.85 g/L). This sugar content is also higher than those of the varieties experimented by Crépeau et al [ 30 ] and Daniel et al [ 36 ], who reported sugar contents evaluated, respectively, at 60.89–111.10 g/L and 100.3 g/L. Moreover, the sorghum juice carbohydrate profile for this study was mainly composed of glucose, fructose, and sucrose.…”

Section: Resultscontrasting

confidence: 49%

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Optimization of energy recovery efficiency from sweet sorghum stems by ethanol and methane fermentation processes coupling

Hamadou,

Djomdi,

Zieba Falama

et al. 2023

Bioengineered

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Taken separately, a single sweet sorghum stem bioconversion process for bioethanol and biomethane production only leads to a partial conversion of organic matter. The direct fermentation of crushed whole stem coupled with the methanization of the subsequent solid residues in a two-stage process was experimented to improve energy bioconversion yield, efficiency, and profitability. The raw stalk calorific value was 17,144.17 kJ/kg DM. Fermentation step performed using Saccharomyces cerevisiae resulted in a bioconversion yield of 261.18 g Eth/kg DM, i.e . an energy recovery efficiency of 6921.27 kJ/kg DM. The methanogenic potentials were 279 and 256 LCH 4 /kg DM, respectively, for raw stem and fermentation residues, i.e . energy yields of 10,013.31 and 9187.84 kJ/kg DM, respectively. Coupling processes have significantly increased yield and made it possible to reach 13,309.57 kJ/kg DM, i.e . 77.63% of raw stem energy recovery yield, compared to 40.37% and 58.40%, respectively, for single fermentation and methanization processes.

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Section: Resultscontrasting

confidence: 57%