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article

Cell disruption for microalgae biorefineries

E. Günerken, E. D'Hondt, M.H.M. Eppink, L. Garcia-Gonzalez, more

Biotechnology Advances > 2015 > 33 > 2 > 243-260

Microalgae are a potential source for various valuable chemicals for commercial applications ranging from nutraceuticals to fuels. Objective in a biorefinery is to utilize biomass ingredients efficiently similarly to petroleum refineries in which oil is fractionated in fuels and a variety of products with higher value. Downstream processes in microalgae biorefineries consist of different steps whereof...

article

Pulsed electric field assisted extraction of nutritionally valuable compounds from microalgae Nannochloropsis spp. using the binary mixture of organic solvents and water

Oleksii Parniakov, Francisco J. Barba, Nabil Grimi, Luc Marchal, more

Innovative Food Science and Emerging Technologies > 2015 > 27 > Complete > 79-85

This work studies the potential of the pulsed electric field (PEF) assisted extraction of nutritionally valuable compounds from microalgae Nannochloropsis spp. using the binary mixture of organic solvents (dimethyl sulfoxide, DMSO and ethanol, EtOH) and water. The one-stage (E _I ) and two stage (E _I _I ) extraction procedures were compared. The procedure E _I included the...

article

Dependence of the dielectrophoretic upper crossover frequency on the lipid content of microalgal cells

Kelsey A. Michael, Sage R. Hiibel, Emil J. Geiger, K.A. Michael, more

Algal Research > 2014 > 6 > Part A > 17-21

High frequency dielectrophoresis (>20MHz) was used to demonstrate that the upper crossover frequency of microalgal cells is reduced as lipids accumulate within the cytoplasm. Currently, the majority of AC dielectrophoresis applications differentiate cells by exploiting differences in the lower crossover frequency, typically between 10 and 500kHz. However, the single shell model also predicts another...

article

Ammonia inhibition on Arthrospira platensis in relation to the initial biomass density and pH

Giorgos Markou, Dries Vandamme, Koenraad Muylaert, G. Markou, more

Bioresource Technology > 2014 > 166 > Complete > 259-265

In this study the combined effect of total ammoniacal nitrogen (TAN) concentration, initial biomass density and initial pH of the cultivation medium on growth of Arthrospira platensis was studied. The results indicate that TAN inhibition in relation to the initial biomass in unregulated pH cultures is neither a clearly biomass-independent nor biomass-dependent phenomenon. However, low biomass densities...

article

Probiotic, prebiotic and synbiotic applications for the improvement of larval European lobster (Homarus gammarus) culture

Carly L. Daniels, Daniel L. Merrifield, Einar Ringø, Simon J. Davies, more

Aquaculture > 2013 > 416-417 > Complete > 396-406

The effects of dietary applications of a commercial probiotic (Bacillus spp.) and prebiotic (mannan oligosaccharides [MOS]), used singularly and combined (i.e. synbiotic), on larval survival, growth, intestinal microbial communities and stress resistance of larval European lobster, Homarus gammarus, were assessed. Larvae were reared in green water culture for 12days from hatch until metamorphosis...

article

The synchronized cell cycle of Neochloris oleoabundans and its influence on biomass composition under constant light conditions

Lenneke de Winter, Anne J. Klok, Maria Cuaresma Franco, Maria J. Barbosa, more

Algal Research > 2013 > 2 > 4 > 313-320

The effect of cell cycle stage on biomass composition of the green microalgae Neochloris oleoabundans was investigated. N. oleoabundans was grown under constant light conditions in a flat panel photobioreactor operated as a turbidostat. Even though light conditions were constant, a synchronized cell division was observed with the cells dividing by multiple fission during the natural night. Presumably,...

article

Factors driving the seasonal distribution of planktonic and epiphytic ciliates in a eutrophicated Mediterranean Lagoon

Amel Dhib, Mounir Ben Brahim, Boutheina Ziadi, Fourat Akrout, more

Marine Pollution Bulletin > 2013 > 74 > 1 > 383-395

We studied the distribution of planktonic and epiphytic ciliates coupled with environmental factors and microalgae abundance at five stations in Ghar El Melh Lagoon (Tunisia). Planktonic ciliates were monitored for a year and epiphytic ciliates were sampled during summer 2011 in concordance with the proliferation of the seagrass Ruppia cirrhosa. Ciliate assemblage was largely dominated by Spirotrichea...

article

Current limits of life cycle assessment framework in evaluating environmental sustainability – case of two evolving biofuel technologies

Anne Holma, Kati Koponen, Riina Antikainen, Laurent Lardon, more

Journal of Cleaner Production > 2013 > 54 > Complete > 215-228

The growing need to use biofuel raw materials that do not compete with food and feed have resulted in a growing interest in lignocellulosic materials and microalgae. However, the life cycle environmental benefits of both biofuels have been questioned. The aim of this study was to evaluate how environmental sustainability of forest-based and microalgae biodiesel can be estimated by using the life cycle...

article

An efficient and scalable extraction and quantification method for algal derived biofuel

Egan J. Lohman, Robert D. Gardner, Luke Halverson, Richard E. Macur, more

Journal of Microbiological Methods > 2013 > 94 > 3 > 235-244

Microalgae are capable of synthesizing a multitude of compounds including biofuel precursors and other high value products such as omega-3-fatty acids. However, accurate analysis of the specific compounds produced by microalgae is important since slight variations in saturation and carbon chain length can affect the quality, and thus the value, of the end product. We present a method that allows for...

article

From Arctic ponds to the “Northern Great Lakes”: Algae as first responders of climate‐driven regime shifts

John P. Smol, Kathleen M. Rühland, Neal Michelutti, Marlene S. Evans

Journal of Phycology > 60 > 5 > 1029 - 1035

Arctic freshwater ecosystems are on the “frontline” of climate change, but due to a lack of direct long‐term monitoring data, indirect approaches, such as algal‐based paleolimnology, must be used to reconstruct past limnological conditions. Our understanding of the responses of small‐ to mid‐sized Arctic lakes to climate warming has increased over the last ~30 years. However, until recently, little...

article

Bio‐Sprayed/Threaded Microalgae Remain Viable and Indistinguishable from Controls

Jing Cui, Ayad Eddaoudi, Saul Purton, Suwan N. Jayasinghe

Small > 20 > 42 > n/a - n/a

Microalgae are increasingly playing a significant role in many areas of research and development. Recent studies have demonstrated their ability to aid wound healing by their ability to generate oxygen, aiding the healing process. Bearing this in mind, the capability to spray/spin deposit microalgae in suspension (solution) or compartmentalize living microalgae within architectures such as fibers/scaffolds...

article

Substrate and nutrient manipulation during continuous cultivation of extremophilic algae, Galdieria spp. RTK 37.1, substantially impacts biomass productivity and composition

Emma Buckeridge, Carlos C. Caballero, Daniel H. Smith, Matthew B. Stott, more

Biotechnology and Bioengineering > 121 > 11 > 3428 - 3439

The extremophilic nature and metabolic flexibility of Galdieria spp. highlights their potential for biotechnological application. However, limited research into continuous cultivation of Galdieria spp. has slowed progress towards the commercialization of these algae. The objective of this research was to investigate biomass productivity and growth yields during continuous photoautotrophic, mixotrophic...

article

Formulation of inks for 3D printing of microalgae‐based meat analogues and the role of modified starch: a review

Armin Mirzapour‐Kouhdasht, Paniz Biparva, David Julian McClements, Farhad Garavand, more

International Journal of Food Science & Technology > 59 > 11 > 8618 - 8629

The quest for sustainable alternatives to traditional meat products has led to increased interest in plant‐based meat analogues. Microalgae, with their high protein content and eco‐friendly cultivation methods, present a promising option for the development of such analogues. However, integrating microalgae into meat analogues poses challenges related to achieving desired texture, flavour, and colour...

article

Phytoplankton species and traits response to a gradient of urbanization in subtropical lowland streams

Diego Frau, Alfonso Pineda

Ecohydrology > 17 > 6 > n/a - n/a

Lotic environments are among the most vulnerable aquatic ecosystems, and changes occurring in them happen faster than our capacity to measure the impacts, with the choice of community attributes that best reflect these disturbances still unclear. In this study, we evaluated the response of phytoplankton species and species traits along a gradient of urbanization in lowland streams. To do this, we...

article

An evaluation of the genotoxicity and 90‐day repeated dose oral toxicity in rats of Porphyridium purpureum

Timothy S. Murbach, Róbert Glávits, John R. Endres, Gábor Hirka, more

Journal of Applied Toxicology > 44 > 10 > 1616 - 1632

Interest in microalgae products for use in food is increasing, as demands for sustainable and cost‐effective food choices grow due to the escalating global population and increase in climate‐related struggles with agriculture. Toxicological assessments of some species of microalgae have been conducted, but there were little data available for the oral consumption of the red microalgae Porphyridium purpureum...

article

A novel method of flash‐hydrolysis assisted pigment extraction (carotenoids) from microalgae biomass

Sanghamitra Khandual, Ujjwal Pokharel, Shradha Rathore, Felipe Bonilla‐Ahumada, more

Biofuels, Bioproducts and Biorefining > 18 > 5 > 1526 - 1540

The human body can easily convert β‐carotene into retinol (a precursor of vitamin A), a significant ingredient in dietary supplements. The need for commercial natural pigment production, including β‐carotene, has led to intensive research in this area. Processing after biosynthesis is a vital stage that involves the use of nontoxic solvents, efficient mechanical disruption of cells, and the isolation...

article

Comparative plastome and mitogenome analyses indicate that the marine prasinophyte green algae Pycnococcus provasolii and Pseudoscourfieldia marina (Pseudoscourfieldiophyceae class nov., Chlorophyta) represent morphotypes of the same species

Olivier Crépeault, Christian Otis, Jean‐François Pombert, Monique Turmel, more

Journal of Phycology > 60 > 4 > 1021 - 1027

The marine prasinophyte green algae Pycnococcus provasolii and Pseudoscourfieldia marina represent the only extant genera and known species of the Pycnococcaceae. However, their taxonomic status needs to be reassessed, owing to the very close relationship inferred from previous sequence comparisons of individual genes. Although Py. provasolii and Ps. marina are morphologically different, their plastid...

article

Biomedical application of microalgal‐biomaterials hybrid system

Yize Li, Yali Fan, Shuo Ye, Lingyun Xu, more

Biotechnology Journal > 19 > 8 > n/a - n/a

Microalgae are a group of microorganisms containing chlorophyll A, which are highly photosynthetic and rich in nutrients. And they can produce multiple bioactive substances (peptides, proteins, polysaccharides, and fatty acids) for biomedical applications. Despite the unique advantages of microalgae‐based biotherapy, the insufficient treatment efficiency limits its further application. With the development...

article

Printing Green: Microalgae‐Based Materials for 3D Printing with Light

Clara Vazquez‐Martel, Lilliana Florido Martins, Elisa Genthner, Carlos Almeida, more

Advanced Materials > 36 > 33 > n/a - n/a

Microalgae have emerged as sustainable feedstocks due to their ability to fix CO₂ during cultivation, rapid growth rates, and capability to produce a wide variety of metabolites. Several microalgae accumulate lipids in high concentrations, especially triglycerides, along with lipid‐soluble, photoactive pigments such as chlorophylls and derivatives. Microalgae‐derived triglycerides contain longer fatty...

article

Turning Waste into Wealth: A Potent Sono‐Immune Strategy Based on Microcystis

Yuqi Yang, Jun Ge, Xiaoyan Zhong, Luyao Liu, more

Advanced Materials > 36 > 33 > n/a - n/a

Currently, sonodynamic therapy (SDT) has limited therapeutic outcomes and immune responses, highlighting the urgent need for enhanced strategies that can stimulate robust and long‐lasting antitumor effects. Microcystis, a notorious microalga, reveals the possibility of mediating SDT owing to the presence of gas vesicles (GVs) and phycocyanin (PC). Herein, a nontoxic strain of Microcystis elabens (labeled...

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Search results

Cell disruption for microalgae biorefineries

Pulsed electric field assisted extraction of nutritionally valuable compounds from microalgae Nannochloropsis spp. using the binary mixture of organic solvents and water

Dependence of the dielectrophoretic upper crossover frequency on the lipid content of microalgal cells

Ammonia inhibition on Arthrospira platensis in relation to the initial biomass density and pH

Probiotic, prebiotic and synbiotic applications for the improvement of larval European lobster (Homarus gammarus) culture

The synchronized cell cycle of Neochloris oleoabundans and its influence on biomass composition under constant light conditions

Factors driving the seasonal distribution of planktonic and epiphytic ciliates in a eutrophicated Mediterranean Lagoon

Current limits of life cycle assessment framework in evaluating environmental sustainability – case of two evolving biofuel technologies

An efficient and scalable extraction and quantification method for algal derived biofuel

From Arctic ponds to the “Northern Great Lakes”: Algae as first responders of climate‐driven regime shifts

Bio‐Sprayed/Threaded Microalgae Remain Viable and Indistinguishable from Controls

Substrate and nutrient manipulation during continuous cultivation of extremophilic algae, Galdieria spp. RTK 37.1, substantially impacts biomass productivity and composition

Formulation of inks for 3D printing of microalgae‐based meat analogues and the role of modified starch: a review

Phytoplankton species and traits response to a gradient of urbanization in subtropical lowland streams

An evaluation of the genotoxicity and 90‐day repeated dose oral toxicity in rats of Porphyridium purpureum

A novel method of flash‐hydrolysis assisted pigment extraction (carotenoids) from microalgae biomass

Comparative plastome and mitogenome analyses indicate that the marine prasinophyte green algae Pycnococcus provasolii and Pseudoscourfieldia marina (Pseudoscourfieldiophyceae class nov., Chlorophyta) represent morphotypes of the same species

Biomedical application of microalgal‐biomaterials hybrid system

Printing Green: Microalgae‐Based Materials for 3D Printing with Light

Turning Waste into Wealth: A Potent Sono‐Immune Strategy Based on Microcystis

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