Evaluation of particle recovery from microalgae

Chairopoulou, Makrina A.; Kokkinos, Nikolaos C.; García‐Triñanes, Pablo; Mitropoulos, A.Ch.; Teipel, Ulrich

doi:10.1016/j.apt.2021.06.013

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…This finding clearly demonstrated that the cell-wall-lacerating effect of αquartz NPLs increased the cell wall permeability and astaxanthin extraction potential of the four [Emim]-based ILs from rigid H. lacustris cysts. It also suggests that α-quartz NPLs can be considered as effective cell-wall-disrupting tools for the application of custom-designed ILs in the extraction of various products, including edible oils, fragrances, biopolymers, biodiesel, bio-jet fuel, bioethanol, and biogas, using algal biorefineries [2,20,30,31].…”

Section: Room-temperature Il-mediated Astaxanthin Extraction Using α-...mentioning

confidence: 99%

Room-Temperature Cell Disruption and Astaxanthin Recovery from Haematococcus lacustris Cysts Using Ultrathin α-Quartz Nanoplates and Ionic Liquids

et al. 2022

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Ionic liquids (ILs) are new green solvents, which are widely used in lignocellulosic and microalgal biorefineries. However, high-temperature operating conditions limit their application in the extraction of heat-labile algal products, such as bioactive astaxanthin. In this study, we report the technical feasibility of room-temperature astaxanthin extraction from Haematococcus lacustris cysts with a thick and complex cell wall structure, by combining ultrathin α-quartz nanoplates (NPLs) with ethyl-3-methylimidazolium ([Emim])-based ILs. When four different [Emim]-based ILs with thiocyanate (SCN), diethylphosphate (DEP), HSO4, and Cl anions were applied to 90-day-old H. lacustris cysts at room temperature (~28 °C), the astaxanthin extraction efficiency was as low as 9.6-14.2%. Under sonication, α-quartz NPLs disrupted the cyst cell wall for a short duration (5 min). The astaxanthin extraction efficacies of a subsequent IL treatment improved significantly to 49.8% for [Emim] SCN, 60.0% for [Emim] DEP, 80.7% for [Emim] HSO4, and 74.3% for [Emim] Cl ions, which were 4.4, 6.1, 8.4, and 5.2 times higher than the extraction efficacy of only ILs, respectively. This finding suggests that α-quartz NPLs can serve as powerful cell-wall-disrupting agents for the room-temperature IL-mediated extraction of astaxanthin from robust algal cyst cells.

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Section: Room-temperature Il-mediated Astaxanthin Extraction Using α-...mentioning

confidence: 99%

Room-Temperature Cell Disruption and Astaxanthin Recovery from Haematococcus lacustris Cysts Using Ultrathin α-Quartz Nanoplates and Ionic Liquids

et al. 2022

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Comparative analysis of process intensification technologies (PIT) for improved cell disruption and lipid recovery in Aurantiochytrium sp. SW1 microalgae

Mokhtar,

Abdul Rahman,

Sofian‐Seng

et al. 2024

Int J of Food Sci Tech

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SummaryThis study explores enhancing lipid recovery from the lipid‐rich marine microalgae Aurantiochytrium sp. SW1, known for its robust cell wall posing challenges, which necessitates energy‐intensive cell‐disruption for efficient intracellular lipid extraction. Despite advancements in other microalgae, there is lack of reports on efficient cell disruption for Aurantiochytrium sp. SW1 which is vital to reduce the energy costs and minimising the downstream process while maximising lipid yields. Three process intensification technologies (PIT) – microwave treatment, autoclave treatment and ultrasonication were employed on wet Aurantiochytrium sp. SW1 cells to improve the lipid extraction efficiency. Assessing the disruption effectiveness via lipid content, suspension turbidity and particle size distribution, alongside scanning electron microscopy (SEM) for cellular morphology changes post‐PIT treatments, this study indicates all three methods reduced particle size with prolonged treatment time, implying successful cell wall disruption and intracellular component release. Ultrasonication, especially at 50 W power for 10 min, exhibited the highest efficacy, yielding lipid content of 67.76 ± 0.03%. Microscopic analysis unveiled ultrasonication‐induced cell shrinkage and increased membrane permeability, supporting its effectiveness in enhancing solvent penetration for improved lipid recovery. This research underscores PIT techniques' potential as sustainable, energy‐efficient strategies for lipid extraction from Aurantiochytrium sp. SW1 microalgae.

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Evaluation of particle recovery from microalgae

Cited by 2 publications

References 29 publications

Room-Temperature Cell Disruption and Astaxanthin Recovery from Haematococcus lacustris Cysts Using Ultrathin α-Quartz Nanoplates and Ionic Liquids

Room-Temperature Cell Disruption and Astaxanthin Recovery from Haematococcus lacustris Cysts Using Ultrathin α-Quartz Nanoplates and Ionic Liquids

Comparative analysis of process intensification technologies (PIT) for improved cell disruption and lipid recovery in Aurantiochytrium sp. SW1 microalgae

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