Paper mulberry fruit juice: a novel biomass resource for bioethanol production

By way of broadening the use of diverse sustainable bioethanol feedstocks, the potentials of Paper mulberry fruit juice (PMFJ), as a non-food, sugar-based substrate, were evaluated for fuel ethanol production. The suitability of PMFJ was proven, as maximum ethanol concentration (56.4 g/L) and yield...

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Published in:Bioresources and bioprocessing 2022-01, Vol.9 (1), p.3-3, Article 3
Main Authors: Ajayo, Pleasure Chisom, Huang, Mei, Zhao, Li, Tian, Dong, Jiang, Qin, Deng, Shihuai, Zeng, Yongmei, Shen, Fei
Format: Article
Language:English
Subjects:
1G feedstock
Biochemical Engineering
Bioenergy: A Sustainable Solution for Carbon Neutrality
Biofuels
Biomass
Chemistry
Chemistry and Materials Science
Environmental Engineering/Biotechnology
Ethanol
Ethanol conversion
Fermentation
Fractional factorial design
Fruit juices
Fuels
Industrial and Production Engineering
Nutrient screening
Optimization
Productivity
Response surface methodology
Salts
Substrates
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Summary:By way of broadening the use of diverse sustainable bioethanol feedstocks, the potentials of Paper mulberry fruit juice (PMFJ), as a non-food, sugar-based substrate, were evaluated for fuel ethanol production. The suitability of PMFJ was proven, as maximum ethanol concentration (56.4 g/L) and yield (0.39 g/g) were achieved within half a day of the start of fermentation, corresponding to very high ethanol productivity of 4.7 g/L/hr. The established potentials were further optimally maximized through the response surface methodology (RSM). At the optimal temperature of 30 °C, yeast concentration of 0.55 g/L, and pH of 5, ethanol concentration, productivity, and yield obtained were 73.69 g/L, 4.61 g/L/hr, and 0.48 g/g, respectively. Under these ideal conditions, diverse metal salts were afterward screened for their effects on PMFJ fermentation. Based on a two-level fractional factorial design, nutrient addition had no positive impact on ethanol production. Thus, under the optimal process conditions, and without any external nutrient supplementation, bioethanol from PMFJ compared favorably with typical sugar-based energy crops, highlighting its resourcefulness as a high-value biomass resource for fuel ethanol production. Graphical Abstract
ISSN:2197-4365
2197-4365
DOI:10.1186/s40643-021-00490-3