Advances in microbial pretreatment for biorefining of perennial grasses

Vasco‐Correa, Juliana; Zuleta-Correa, Ana; Gomez‐León, Javier; Taborda, Jaime Andrés Pérez

doi:10.1007/s00253-023-12639-5

Cited by 2 publications

(1 citation statement)

References 151 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pretreatment methods include (1) physical methods, such as milling, grinding, and extrusion; (2) chemical methods, involving the utilization of alkalis, acids, and ionic liquids; (3) biological methods, which make use of microorganisms; and (4) physico-chemical methods, which involve steam explosion and ammonia fiber explosion [80][81][82][83][84]. Chemical pretreatment methods have emerged as popular choices for LCB due to their efficiency, potential cost-effectiveness, and effectiveness in degrading more complex structured substrates [16,85].…”

Section: Pretreatment Of Biomassmentioning

confidence: 99%

Comparative Analysis of Acidic and Alkaline Pretreatment Techniques for Bioethanol Production from Perennial Grasses

Johannes,

Xuan

2024

Energies

View full text Add to dashboard Cite

This review paper examines acid and alkaline pretreatments on perennial grasses for second-generation (2G) bioethanol production, a relatively unexplored area in this field. It compares the efficiency of these pretreatments in producing fermentable sugar and bioethanol yield. This study finds that alkaline pretreatment is more effective than acidic pretreatment in removing lignin and increasing sugar yield, leading to higher ethanol yields. However, it is costlier and requires longer reaction times than acidic pretreatment, while acidic pretreatment often leads to the formation of inhibitory compounds at higher temperatures, which is undesirable. The economic and environmental impacts of lignocellulosic biomass (LCB) are also assessed. It is revealed that LCB has a lower carbon but higher water footprint and significant costs due to pretreatment compared to first-generation biofuels. This review further explores artificial intelligence (AI) and advanced technologies in optimizing bioethanol production and identified the gap in literature regarding their application to pretreatment of perennial grasses. This review concludes that although perennial grasses hold promise for 2G bioethanol, the high costs and environmental challenges associated with LCB necessitate further research. This research should focus on integrating AI to optimize the pretreatment of LCB, thereby improving efficiency and sustainability in 2G biofuel production.

show abstract

Section: Pretreatment Of Biomassmentioning

confidence: 99%

Comparative Analysis of Acidic and Alkaline Pretreatment Techniques for Bioethanol Production from Perennial Grasses

Johannes,

Xuan

2024

Energies

View full text Add to dashboard Cite

show abstract

Sustainable Production of Lactic Acid Using a Perennial Ryegrass as Feedstock—A Comparative Study of Fermentation at the Bench- and Reactor-Scale, and Ensiling

Varriale,

Hengsbach,

Guo

et al. 2024

Sustainability

View full text Add to dashboard Cite

Perennial ryegrass (Lolium perenne) is an underutilized lignocellulosic biomass that has several benefits such as high availability, renewability, and biomass yield. The grass press-juice obtained from the mechanical pretreatment can be used for the bio-based production of chemicals. Lactic acid is a platform chemical that has attracted consideration due to its broad area of applications. For this reason, the more sustainable production of lactic acid is expected to increase. In this work, lactic acid was produced using complex medium at the bench- and reactor scale, and the results were compared to those obtained using an optimized press-juice medium. Bench-scale fermentations were carried out in a pH-control system and lactic acid production reached approximately 21.84 ± 0.95 g/L in complex medium, and 26.61 ± 1.2 g/L in press-juice medium. In the bioreactor, the production yield was 0.91 ± 0.07 g/g, corresponding to a 1.4-fold increase with respect to the complex medium with fructose. As a comparison to the traditional ensiling process, the ensiling of whole grass fractions of different varieties harvested in summer and autumn was performed. Ensiling showed variations in lactic acid yields, with a yield up to 15.2% dry mass for the late-harvested samples, surpassing typical silage yields of 6–10% dry mass.

show abstract

Advances in microbial pretreatment for biorefining of perennial grasses

Cited by 2 publications

References 151 publications

Comparative Analysis of Acidic and Alkaline Pretreatment Techniques for Bioethanol Production from Perennial Grasses

Comparative Analysis of Acidic and Alkaline Pretreatment Techniques for Bioethanol Production from Perennial Grasses

Sustainable Production of Lactic Acid Using a Perennial Ryegrass as Feedstock—A Comparative Study of Fermentation at the Bench- and Reactor-Scale, and Ensiling

Contact Info

Product

Resources

About