TY - JOUR
T1 - Pulsed electric field assisted extraction of nutritionally valuable compounds from microalgae Nannochloropsis spp. using the binary mixture of organic solvents and water
AU - Parniakov, Oleksii
AU - Barba, Francisco J.
AU - Grimi, Nabil
AU - Marchal, Luc
AU - Jubeau, Sébastien
AU - Lebovka, Nikolai
AU - Vorobiev, Eugène
PY - 2015/2/1
Y1 - 2015/2/1
N2 - 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 (EI) and two stage (EII) extraction procedures were compared. The procedure EI included the common extraction using the binary mixtures. Two stage (EII) extraction procedure involved PEF-treatment (20 kV/cm) of microalgae suspension (1% wt.) and extraction in water as the first step. The second step included the common extraction using the binary mixtures. The effects of extraction procedure and concentration of organic solvents in water on extraction of total chlorophylls, carotenoids, proteins, phenolic compounds and value of antioxidant capacity, TEAC, were analyzed. The proposed two stage PEF-assisted procedure allowed also effective extraction in less concentrated mixtures of organic solvents with water. Industrial relevance Pre-treatment by pulsed electric field PEF) allowed highly selective extraction of different nutrients from microalgae biomass. The combination of PEF and solvent extraction in the binary mixture of organic solvents (dimethyl sulfoxide, DMSO and ethanol (EtOH)) and water allowed reaching of the high level of extraction pigments and non-degraded proteins. The obtained data can be useful for optimization of the concentration organic solvents in industrial extraction processes.
AB - 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 (EI) and two stage (EII) extraction procedures were compared. The procedure EI included the common extraction using the binary mixtures. Two stage (EII) extraction procedure involved PEF-treatment (20 kV/cm) of microalgae suspension (1% wt.) and extraction in water as the first step. The second step included the common extraction using the binary mixtures. The effects of extraction procedure and concentration of organic solvents in water on extraction of total chlorophylls, carotenoids, proteins, phenolic compounds and value of antioxidant capacity, TEAC, were analyzed. The proposed two stage PEF-assisted procedure allowed also effective extraction in less concentrated mixtures of organic solvents with water. Industrial relevance Pre-treatment by pulsed electric field PEF) allowed highly selective extraction of different nutrients from microalgae biomass. The combination of PEF and solvent extraction in the binary mixture of organic solvents (dimethyl sulfoxide, DMSO and ethanol (EtOH)) and water allowed reaching of the high level of extraction pigments and non-degraded proteins. The obtained data can be useful for optimization of the concentration organic solvents in industrial extraction processes.
KW - Antioxidants
KW - Carotenoids
KW - Chlorophylls
KW - Microalgae
KW - Pulsed electric fields
KW - Two-stage extraction
UR - http://www.scopus.com/inward/record.url?scp=84923168131&partnerID=8YFLogxK
U2 - 10.1016/j.ifset.2014.11.002
DO - 10.1016/j.ifset.2014.11.002
M3 - Journal article
AN - SCOPUS:84923168131
VL - 27
SP - 79
EP - 85
JO - Innovative Food Science and Emerging Technologies
JF - Innovative Food Science and Emerging Technologies
SN - 1466-8564
ER -