Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae
Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticrib...
Ausführliche Beschreibung
Autor*in: |
Lin Zhang [verfasserIn] Jichang Han [verfasserIn] Shuonan Ma [verfasserIn] Yuanbo Zhang [verfasserIn] Yumeng Wang [verfasserIn] Jilin Xu [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2023 |
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Schlagwörter: |
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Übergeordnetes Werk: |
In: Frontiers in Marine Science - Frontiers Media S.A., 2015, 10(2023) |
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Übergeordnetes Werk: |
volume:10 ; year:2023 |
Links: |
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DOI / URN: |
10.3389/fmars.2023.1117043 |
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Katalog-ID: |
DOAJ081138113 |
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520 | |a Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. | ||
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10.3389/fmars.2023.1117043 doi (DE-627)DOAJ081138113 (DE-599)DOAJ0d2d55edaad74c48ab6103b0644792f4 DE-627 ger DE-627 rakwb eng QH1-199.5 Lin Zhang verfasserin aut Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. aquaculture nitrate-N microalgae diet growth nitrogen removal capacity Science Q General. Including nature conservation, geographical distribution Jichang Han verfasserin aut Jichang Han verfasserin aut Shuonan Ma verfasserin aut Yuanbo Zhang verfasserin aut Yumeng Wang verfasserin aut Jilin Xu verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 10(2023) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:10 year:2023 https://doi.org/10.3389/fmars.2023.1117043 kostenfrei https://doaj.org/article/0d2d55edaad74c48ab6103b0644792f4 kostenfrei https://www.frontiersin.org/articles/10.3389/fmars.2023.1117043/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2023 |
spelling |
10.3389/fmars.2023.1117043 doi (DE-627)DOAJ081138113 (DE-599)DOAJ0d2d55edaad74c48ab6103b0644792f4 DE-627 ger DE-627 rakwb eng QH1-199.5 Lin Zhang verfasserin aut Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. aquaculture nitrate-N microalgae diet growth nitrogen removal capacity Science Q General. Including nature conservation, geographical distribution Jichang Han verfasserin aut Jichang Han verfasserin aut Shuonan Ma verfasserin aut Yuanbo Zhang verfasserin aut Yumeng Wang verfasserin aut Jilin Xu verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 10(2023) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:10 year:2023 https://doi.org/10.3389/fmars.2023.1117043 kostenfrei https://doaj.org/article/0d2d55edaad74c48ab6103b0644792f4 kostenfrei https://www.frontiersin.org/articles/10.3389/fmars.2023.1117043/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2023 |
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10.3389/fmars.2023.1117043 doi (DE-627)DOAJ081138113 (DE-599)DOAJ0d2d55edaad74c48ab6103b0644792f4 DE-627 ger DE-627 rakwb eng QH1-199.5 Lin Zhang verfasserin aut Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. aquaculture nitrate-N microalgae diet growth nitrogen removal capacity Science Q General. Including nature conservation, geographical distribution Jichang Han verfasserin aut Jichang Han verfasserin aut Shuonan Ma verfasserin aut Yuanbo Zhang verfasserin aut Yumeng Wang verfasserin aut Jilin Xu verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 10(2023) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:10 year:2023 https://doi.org/10.3389/fmars.2023.1117043 kostenfrei https://doaj.org/article/0d2d55edaad74c48ab6103b0644792f4 kostenfrei https://www.frontiersin.org/articles/10.3389/fmars.2023.1117043/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2023 |
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10.3389/fmars.2023.1117043 doi (DE-627)DOAJ081138113 (DE-599)DOAJ0d2d55edaad74c48ab6103b0644792f4 DE-627 ger DE-627 rakwb eng QH1-199.5 Lin Zhang verfasserin aut Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. aquaculture nitrate-N microalgae diet growth nitrogen removal capacity Science Q General. Including nature conservation, geographical distribution Jichang Han verfasserin aut Jichang Han verfasserin aut Shuonan Ma verfasserin aut Yuanbo Zhang verfasserin aut Yumeng Wang verfasserin aut Jilin Xu verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 10(2023) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:10 year:2023 https://doi.org/10.3389/fmars.2023.1117043 kostenfrei https://doaj.org/article/0d2d55edaad74c48ab6103b0644792f4 kostenfrei https://www.frontiersin.org/articles/10.3389/fmars.2023.1117043/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2023 |
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10.3389/fmars.2023.1117043 doi (DE-627)DOAJ081138113 (DE-599)DOAJ0d2d55edaad74c48ab6103b0644792f4 DE-627 ger DE-627 rakwb eng QH1-199.5 Lin Zhang verfasserin aut Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. aquaculture nitrate-N microalgae diet growth nitrogen removal capacity Science Q General. Including nature conservation, geographical distribution Jichang Han verfasserin aut Jichang Han verfasserin aut Shuonan Ma verfasserin aut Yuanbo Zhang verfasserin aut Yumeng Wang verfasserin aut Jilin Xu verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 10(2023) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:10 year:2023 https://doi.org/10.3389/fmars.2023.1117043 kostenfrei https://doaj.org/article/0d2d55edaad74c48ab6103b0644792f4 kostenfrei https://www.frontiersin.org/articles/10.3389/fmars.2023.1117043/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2023 |
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Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae |
abstract |
Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. |
abstractGer |
Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. |
abstract_unstemmed |
Nitrogen is one of the main pollution sources in aquaculture system. Microalgae are considered as one of the ideal bio-absorbents used in wastewater purification, due to their nitrogen removal capacity and more importantly nutritional value. Nannochloropsis oceanica, Cyclotella atomus, and Conticribra weissflogii are famous as diet microalgae. However, estimation of nitrogen removal capability and concomitant nutritional properties of the three species have been rarely reported, which was performed in this study. N. oceanica, C. atomus, and C. weissflogii were cultivated with two initial nitrate-N concentration, noted as NC (13.85 mg·L–1) and NW (5 mg·L–1) groups, respectively. All the three microalgal strains in NC group showed higher maximum cell density, specific growth rate, and biomass concentration, maximal quantum yield of PSII (Fv/Fm), total Chlorophyll and carotenoids contents than that in NW group. These results confirmed the importance of nitrogen for microalgal biomass generation and photosynthetic performance. From Fv/Fm, N. oceanica has better adaptability towards nitrogen depletion compared to other two selected strains. The three microalgae exhibited significantly stronger nitrate-N absorption efficiencies in NC group at the same timepoint, compared to NW. Analyzing the average amount of nitrate-N absorbed by each cell daily, C. weissflogii gained the largest value, followed successively by C. atomus and N. oceanica, likely due to species specificity. Moreover, three strains removed 90% of nitrate-N within five days and 99% of that within seven days, showing splendid nitrogen removal potentials. These results confirmed the feasibility of removing nitrogen from wastewater with the selected three microalgae. Nutritional properties of microalgal biomass were also investigated. For the three species, lower nitrate-N was beneficial for the production of soluble sugar, total lipid, and saturated fatty acid, while higher nitrate-N led to more soluble protein and polyunsaturated fatty acid. In summary, N. oceanica, C. atomus, and C. weissflogii all showed strong nitrogen removal capacity, whose growth characteristics and nutritional properties varied with nitrogen concentration. In practical application for assimilating nitrogen, these findings could provide some references for the selection of suitable microalgae species in order to satisfy different nutritional requirements of various aquatic animals. |
collection_details |
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title_short |
Comprehensive evaluation of growth characteristics, nitrogen removal capacity, and nutritional properties of three diet microalgae |
url |
https://doi.org/10.3389/fmars.2023.1117043 https://doaj.org/article/0d2d55edaad74c48ab6103b0644792f4 https://www.frontiersin.org/articles/10.3389/fmars.2023.1117043/full https://doaj.org/toc/2296-7745 |
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author2 |
Jichang Han Shuonan Ma Yuanbo Zhang Yumeng Wang Jilin Xu |
author2Str |
Jichang Han Shuonan Ma Yuanbo Zhang Yumeng Wang Jilin Xu |
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up_date |
2024-07-03T18:29:00.442Z |
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