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Characterization of Selected Microalgae Species as Potential Sources of Nutrients and Antioxidants

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cris.virtual.author-orcid0000-0002-0153-4624
cris.virtual.author-orcid0000-0003-3708-2890
cris.virtual.author-orcid0000-0003-2530-6535
cris.virtual.author-orcid0000-0002-4580-354X
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cris.virtualsource.author-orcid9af677aa-a894-4dc6-8898-f77473ec4e6d
cris.virtualsource.author-orcid897f1035-fcd0-4882-9b40-77273ff2fd96
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dc.abstract.enMicroalgae are exceptional organisms from a nutritional perspective, boasting an array of bioactive compounds that have long justified their incorporation into human diets. In this study, we explored the potential of five microalgae species: Nannochloropsis sp., Tetraselmis chuii, Chaetoceros muelleri, Thalassiosira weissflogii, and Tisochrysis lutea. We conducted comprehensive analyses of their nutritional profiles, encompassing protein content, individual amino acid composition, mineral and trace element levels, fatty acid profiles (including saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), and polyunsaturated fatty acids (PUFAs)), polyphenol compositions, and vitamin B content. The antioxidant activity of the ethanolic extracts was evaluated using two methods: ABTS and DPPH radical scavenging assay. The total protein content of the microalgae ranged from 34.09 ± 0.39% to 42.45 ± 0.18%, with the highest concentration observed in T. weissflogii. Essential amino acids such as histidine, threonine, lysine, valine, isoleucine, leucine, phenylalanine, and methionine were present in concentrations ranging from 0.53 ± 0.02 to 12.55 ± 2.21 g/16 g N. Glutamic acid emerged as the most abundant amino acid, with concentrations ranging from 6.73 ± 0.82 to 12.55 ± 2.21 g/16 g N. Among the microalgae species, T. chuii exhibited the highest concentrations of calcium (Ca) and manganese (Mn), while C. muelleri showed prominence in magnesium (Mg), sodium (Na), and iron (Fe). T. weissflogii stood out for its potassium (K) content, and T. lutea contained notable amounts of copper (Cu), zinc (Zn), and lead (Pb). Regarding fatty acid profiles, Nannochloropsis sp. and T. chuii were predominantly composed of SFA, while C. muelleri and T. weissflogii were rich in MUFA. PUFAs dominated the fatty acid profile of T. lutea, which also exhibited the most diverse range of polyphenolic substances. We also analyzed the B vitamin content, with T. lutea displaying the highest concentrations of niacin (B3) and riboflavin (B2). Antioxidant activity was confirmed for all microalgae tested using DPPH and ABTS radical IC50 (mg/mL) converted to Trolox equivalent (TEAC). These findings underscore the substantial potential of the examined microalgae species as sources of biologically valuable substances characterized by rapid growth and relatively undemanding cultivation conditions.
dc.affiliationWydział Nauk o Żywności i Żywieniu
dc.affiliation.instituteKatedra Technologii Żywności Pochodzenia Roślinnego
dc.affiliation.instituteKatedra Biochemii i Analizy Żywności
dc.affiliation.instituteKatedra Biotechnologii i Mikrobiologii Żywności
dc.article.number2160
dc.contributor.authorČmiková, Natália
dc.contributor.authorKowalczewski, Przemysław Łukasz
dc.contributor.authorKmiecik, Dominik
dc.contributor.authorTomczak, Aneta
dc.contributor.authorDrożdżyńska, Agnieszka
dc.contributor.authorŚlachciński, Mariusz
dc.contributor.authorKrólak, Jakub
dc.contributor.authorKačániová, Miroslava
dc.date.access2024-07-17
dc.date.accessioned2024-07-17T11:08:04Z
dc.date.available2024-07-17T11:08:04Z
dc.date.copyright2024-07-08
dc.date.issued2024
dc.description.abstract<jats:p>Microalgae are exceptional organisms from a nutritional perspective, boasting an array of bioactive compounds that have long justified their incorporation into human diets. In this study, we explored the potential of five microalgae species: Nannochloropsis sp., Tetraselmis chuii, Chaetoceros muelleri, Thalassiosira weissflogii, and Tisochrysis lutea. We conducted comprehensive analyses of their nutritional profiles, encompassing protein content, individual amino acid composition, mineral and trace element levels, fatty acid profiles (including saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), and polyunsaturated fatty acids (PUFAs)), polyphenol compositions, and vitamin B content. The antioxidant activity of the ethanolic extracts was evaluated using two methods: ABTS and DPPH radical scavenging assay. The total protein content of the microalgae ranged from 34.09 ± 0.39% to 42.45 ± 0.18%, with the highest concentration observed in T. weissflogii. Essential amino acids such as histidine, threonine, lysine, valine, isoleucine, leucine, phenylalanine, and methionine were present in concentrations ranging from 0.53 ± 0.02 to 12.55 ± 2.21 g/16 g N. Glutamic acid emerged as the most abundant amino acid, with concentrations ranging from 6.73 ± 0.82 to 12.55 ± 2.21 g/16 g N. Among the microalgae species, T. chuii exhibited the highest concentrations of calcium (Ca) and manganese (Mn), while C. muelleri showed prominence in magnesium (Mg), sodium (Na), and iron (Fe). T. weissflogii stood out for its potassium (K) content, and T. lutea contained notable amounts of copper (Cu), zinc (Zn), and lead (Pb). Regarding fatty acid profiles, Nannochloropsis sp. and T. chuii were predominantly composed of SFA, while C. muelleri and T. weissflogii were rich in MUFA. PUFAs dominated the fatty acid profile of T. lutea, which also exhibited the most diverse range of polyphenolic substances. We also analyzed the B vitamin content, with T. lutea displaying the highest concentrations of niacin (B3) and riboflavin (B2). Antioxidant activity was confirmed for all microalgae tested using DPPH and ABTS radical IC50 (mg/mL) converted to Trolox equivalent (TEAC). These findings underscore the substantial potential of the examined microalgae species as sources of biologically valuable substances characterized by rapid growth and relatively undemanding cultivation conditions.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if4.7
dc.description.number13
dc.description.points100
dc.description.reviewreview
dc.description.versionfinal_published
dc.description.volume13
dc.identifier.doi10.3390/foods13132160
dc.identifier.issn2304-8158
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/1596
dc.identifier.weblinkhttps://www.mdpi.com/2304-8158/13/13/2160
dc.languageen
dc.pbn.affiliationfood and nutrition technology
dc.relation.ispartofFoods
dc.rightsCC-BY
dc.sciencecloudsend
dc.share.typeOPEN_JOURNAL
dc.subject.enmicroalgae
dc.subject.enprotein content
dc.subject.enamino acids
dc.subject.enfatty acids
dc.subject.enminerals
dc.subject.enpolyphenols
dc.subject.envitamin B
dc.titleCharacterization of Selected Microalgae Species as Potential Sources of Nutrients and Antioxidants
dc.title.volumeSpecial Issue Plant-Based Food: From Nutritional Value to Health Benefits
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue13
oaire.citation.volume13
project.funder.nameinne