Pulsed electric field pretreatment of rapeseed green biomass (stems) to enhance pressing and extractives recovery

Yu, Xiaoxi; Gouyo, Têko; Grimi, Nabil; Bals, Olivier; Vorobiev, Eugène

doi:10.1016/j.biortech.2015.08.073

Cited by 62 publications

(21 citation statements)

References 27 publications

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“…Two different durations in the range of milliseconds and microseconds were applied to Chlorella vulgaris and found irreversible electroporation at >4 kV/cm in the millisecond range and at ≥10 kV/cm in the microseconds range (Luengo et al 2015). Yu et al (2016) optimized pressure, electric field strength, and pulse number on the juice expression yield, total polyphenols, and total proteins content in the expressed juices of rapeseed stem biomass. The optimum conditions of electric field strength E = 8 kV/cm, pressure P = 10 bar and pulse number tPEF = 2 ms increased juice yield from 34 to 81%.…”

Section: Methods Of Pretreatmentmentioning

confidence: 99%

Recent updates on different methods of pretreatment of lignocellulosic feedstocks: a review

Kumar

Sharma

2017

Bioresour. Bioprocess.

1,086

446

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Lignocellulosic feedstock materials are the most abundant renewable bioresource material available on earth. It is primarily composed of cellulose, hemicellulose, and lignin, which are strongly associated with each other. Pretreatment processes are mainly involved in effective separation of these complex interlinked fractions and increase the accessibility of each individual component, thereby becoming an essential step in a broad range of applications particularly for biomass valorization. However, a major hurdle is the removal of sturdy and rugged lignin component which is highly resistant to solubilization and is also a major inhibitor for hydrolysis of cellulose and hemicellulose. Moreover, other factors such as lignin content, crystalline, and rigid nature of cellulose, production of post-pretreatment inhibitory products and size of feed stock particle limit the digestibility of lignocellulosic biomass. This has led to extensive research in the development of various pretreatment processes. The major pretreatment methods include physical, chemical, and biological approaches. The selection of pretreatment process depends exclusively on the application. As compared to the conventional single pretreatment process, integrated processes combining two or more pretreatment techniques is beneficial in reducing the number of process operational steps besides minimizing the production of undesirable inhibitors. However, an extensive research is still required for the development of new and more efficient pretreatment processes for lignocellulosic feedstocks yielding promising results.

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Section: Methods Of Pretreatmentmentioning

confidence: 99%

Recent updates on different methods of pretreatment of lignocellulosic feedstocks: a review

Kumar

Sharma

2017

Bioresour. Bioprocess.

1,086

446

View full text Add to dashboard Cite

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“…In order to recover the maximum yield of polyphenols, the optimal parameters for PEF extraction were found to be as follows: voltage of 30 V, frequency of 30 Hz, 10% ethanol and an exposure time of 10 s. This method also proved advantageous over traditional methods due to the shorter extraction time and low solvent use (Teh et al, 2015). Yu et al (2016) evaluated PEF-assisted extraction of polyphenols in order to valorise a by-product of rapeseed oil production, rapeseed stem or green biomass. They determined that the number of pulses that yielded higher total polyphenol content of juices pressed at 10 b was 200, with a strength of 8 kv/cm.…”

Section: Pef Extractionmentioning

confidence: 99%

“…Without PEF pre-treatment, after 30 min of pressing, the result was 24% polyphenol yield from rapeseed. PEF pre-treatment with 200 pulses and an increase in strength to 8 kv/cm resulted in maximum polyphenol yield for pressing (Yu et al, 2016). These initial studies have had success in isolating phenolics from rapeseed by-products, and it could be a promising novel method to isolate phenolic compounds; however, further studies are necessary to fully validate this method for use with rapeseed meal.…”

Section: Pef Extractionmentioning

confidence: 99%

Sinapinic and protocatechuic acids found in rapeseed: isolation, characterisation and potential benefits for human health as functional food ingredients

Quinn

Gray

Meaney³

et al. 2017

Irish Journal of Agricultural and Food Research

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Rapeseed is one of the world’s major oilseeds, and rapeseed oil is produced by pressing of the seeds. This process results in the production of a low-economic-value by-product, rapeseed meal, which is commonly used as animal feed. Rapeseed meal is rich in bioactive phenolic compounds, including sinapinic acid (SA) and protocatechuic acid (PCA). Isolation of these bioactive compounds from a by-product of rapeseed oil production is largely in agreement with the current concept of the circular economy and total utilisation of crop harvest using a biorefinery approach. In this review, current information concerning traditional and novel methods to isolate phenolic compounds – including SA and PCA – from rapeseed meal, along with in vitro and in vivo studies concerning the bioactivity of SA and PCA and their associated health effects, is collated. These health effects include anti-inflammatory, anti-cancer, anti-diabetes activities, along with histone deacetylase inhibition and protective cardiovascular, neurological and hepatic effects. The traditional extraction methods include use of solvents and/or enzymes. However, a need for simpler, more efficient methodologies has led to the development of novel extraction processes, including microwave-assisted, ultrasound-assisted, pulsed electric field and high-voltage electrical discharge extraction processes.

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“…Press/expeller method is the most common technique, initially applied for oil extraction from various oil seeds. By this method, oil from microalgal biomass can be removed nearly 70–75% of the dried biomass . The remaining oil is attached to cell membrane so that it requires a second stage using solvents to increase the extraction efficiency .…”

Section: Lipid Extractionmentioning

confidence: 99%

Microalgae as a potential source for biodiesel production: techniques, methods, and other challenges

Arenas

Palacio

Juantorena

et al. 2016

Int. J. Energy Res.

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Summary This paper reviews some of the most important aspects of microalgae as a potential source for biodiesel production. Microalgae are photosynthetic microorganisms that can grow rapidly in a variety of environments because of their unicellular or multicellular structure depending on the species. They have the advantage of self‐reproduction using solar energy and converting it into chemical energy via photosynthesis. This process concludes a full cycle in a few days, obtaining higher lipid yields than terrestrial crops. This review shows several techniques and some methodologies used in the biodiesel production process from microalgae as well as the challenges that must be overcome for large‐scale process and in bio‐refineries. Copyright © 2016 John Wiley & Sons, Ltd.

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Pulsed electric field pretreatment of rapeseed green biomass (stems) to enhance pressing and extractives recovery

Cited by 62 publications

References 27 publications

Recent updates on different methods of pretreatment of lignocellulosic feedstocks: a review

Recent updates on different methods of pretreatment of lignocellulosic feedstocks: a review

Sinapinic and protocatechuic acids found in rapeseed: isolation, characterisation and potential benefits for human health as functional food ingredients

Microalgae as a potential source for biodiesel production: techniques, methods, and other challenges

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