The effects of grass biomass preservation methods, organic acid treatment and press type on the separation efficiency in the green biorefinery

Ayanfe, Nisola; Franco, Márcia de Oliveira; Stefanski, Tomasz; Pap, Nóra; Rinne, Marketta

doi:10.1016/j.biteb.2023.101356

Cited by 5 publications

(13 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, ensiling could be anticipated to facilitate the release of liquid from the plant cell contents. There are relatively few direct comparisons of fresh and ensiled grass in a biorefinery process, but Ayanfe et al [ 22 ] showed that this was indeed the case (Fig. 3 ).…”

Section: Introductionmentioning

confidence: 97%

“…There was also an interaction, so the effect of ensiling was greater when a less efficient liquid separation method was used. Unfortunately, Ayanfe et al [ 22 ] did not analyse in detail the composition of press cake and press juice from fresh and ensiled grasses, and information of only liquid yield and DM, ash and CP concentrations in press juice are available. As liquid yield and liquid CP concentration were higher in ensiled rather than fresh grass [ 22 ], it can be deduced that press cake from silage would be drier and have lower CP concentration than that from fresh grass.…”

Section: Introductionmentioning

confidence: 99%

“…Decreased water activity prevents microbial growth and facilitates logistics due to reduced weight of the material. For extraction of solubles, dry material needs to be rehydrated, but according to Ayanfe et al [ 22 ], drying and rehydrating resulted in similar CP extraction rate as from fresh or frozen grass (Fig. 3 ).…”

Section: Introductionmentioning

confidence: 99%

“…

Fig. 3 Comparison of crude protein extraction efficiency into press juice of fresh and preserved (frozen, dried and rehydrated or ensiled) without (C) or with a formic acid-based additive (F) using an inefficient plate press or an efficient double screw press [ 22 ] …”

Section: Introductionmentioning

confidence: 99%

“…If a high DM forage is used, and soluble cell content material should be separated from the cell walls, an option could be to add water or recycled press juice from the process to increase the moisture content and “wash” the solubles into the press juice. This could be a viable option as in the experiment of Ayanfe et al [ 22 ], rehydrated dried grass (hay) resulted in similar extracted CP yields as fresh, frozen and ensiled materials when screw-pressed. The potential drawback of using wilted or dried grass could be the proteolysis that takes place during wilting/drying, but this may be less consequential than the benefits.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Novel uses of ensiled biomasses as feedstocks for green biorefineries

Rinne

2024

J Animal Sci Biotechnol

Self Cite

View full text Add to dashboard Cite

Perennial forage plants are efficient utilizers of solar radiation and nutrients so that there is a lot of scope to increase the production of green biomass in many areas. Currently, grasses are mainly used as feeds for ruminants and equines, but there could be higher added value use for several components of the green biomass. Interest in green biorefining has risen recently motivated by the increased sustainability pressures and need to break the reliance on fossil fuels. Novel products derived from grass, such as paper and packaging, nanofibers, animal bedding, novel protein feeds, extracted proteins, biochemicals, nutraceuticals, bioactive compounds, biogas and biochar could create new sustainable business opportunities in rural areas. Most green biorefinery concepts focus on using fresh green biomass as the feedstock, but preservation of it by ensiling would provide several benefits such as all-year-around availability of the feedstock and increased stability of the press juice and press cake. The major difference between fresh and ensiled grass is the conversion of water soluble carbohydrates into fermentation end products, mainly lactic and acetic acids, that lower the pH of the silage so that it becomes stable in anaerobic conditions. This has some important consequences on the processability and quality of products, which are partly positive and partly negative, e.g., degradation of protein into peptides, amino acids and ammonia. These aspects are discussed in this review. Graphical Abstract

show abstract

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Novel uses of ensiled biomasses as feedstocks for green biorefineries

Rinne

2024

J Animal Sci Biotechnol

Self Cite

View full text Add to dashboard Cite

show abstract

Biorefining of legume and grass biomasses: Technological properties and bioactivities of the green juice

Pap,

Granato,

Järvenpää

et al. 2024

Future Foods

View full text Add to dashboard Cite

Forage type and additive effects on fermentation quality and biorefinery performance of silages

Rinne,

Stefański,

Franco

et al. 2024

Grass and Forage Science

View full text Add to dashboard Cite

The concept of a green biorefinery has recently gained interest and can be defined as a process where green biomass is processed to a variety of products. Most green biorefineries rely on fresh green biomass as the feedstock, but using a stable ensiled biomass could provide benefits. We evaluated the effects of silage additive treatments on silage fermentation quality and performance in a laboratory scale liquid–solid separation to simulate the first step of a green biorefinery. In Experiment 1, red clover and fresh and wilted grass were ensiled without additive or treated with a lactic acid bacteria inoculant or a formic acid based additive. In Experiment 2, grass or red clover were treated with a fibrolytic enzyme, formic acid or a combination of them, and a control without additive was also included. Silage fermentation quality was improved by additive use. Biomass dry matter concentration was negatively related to liquid yield, but effects of additive treatments on the biorefinery performance were minor and inconsistent between different forages. Optimizing agronomic and feedstock conservation management plays an important role for the success and sustainability of the biorefinery process. Good silage management practices with minimal losses during storage should be targeted, but no clear patterns in biorefinery outputs were observed in the current study when different types of additives were used in grass and clover silage production.

show abstract

The effects of grass biomass preservation methods, organic acid treatment and press type on the separation efficiency in the green biorefinery

Cited by 5 publications

References 36 publications

Novel uses of ensiled biomasses as feedstocks for green biorefineries

Novel uses of ensiled biomasses as feedstocks for green biorefineries

Biorefining of legume and grass biomasses: Technological properties and bioactivities of the green juice

Forage type and additive effects on fermentation quality and biorefinery performance of silages

Contact Info

Product

Resources

About