Green algae represent the fastest producible source of biomass that has diverse uses as biofuel, food, feed-stocks and the like. The biomass is rich in oils, which can be used as biofuel and the cultivation may be use...Green algae represent the fastest producible source of biomass that has diverse uses as biofuel, food, feed-stocks and the like. The biomass is rich in oils, which can be used as biofuel and the cultivation may be used to purify water as well. Productivity and quality of algal biomass depends on species and strains as well as environmental conditions of growth. Therefore, identification of new species and strains as well as standardization of media composition and environmental conditions for optimum yield of specific products, especially oil has a high relevance in algal technological research. In this connection, biomass productivity and oil yield of a local strain of Chlorella lobophora in BBM and modified BBM media are compared. Chemical characterization of the oil and feasibility of biodiesel production from the extracted oil is also assessed. Biomass productivity and the lipid productivity of the alga in both the media are found to be significantly different (P < 0.05). Fatty acid profiling of the oil extracted from the dried algal biomass using GC-MS analysis reveals that Palmitic acid (16:0) and Oleic acid (18:1) are the major fatty acids and nutraceutically important fatty acids are also present. The oil can be effectively transesterified to methyl esters. FTIR spectroscopy confirms the quality of the biodiesel produced. As the potentials of this local algal strain for biomass production and oil yield is confirmed, further standardization of environment conditions for better oil yield and quality biomass production is progressing to optimize its value as globally competent nutraceutical and biofuel resource.展开更多
Lobophora rosacea C.W. Vieira, Payri et De Clerck is reported from the South China Sea for the first time. Our specimens are very similar to L. rosacea recently described from New Caledonia, not only in morphology but...Lobophora rosacea C.W. Vieira, Payri et De Clerck is reported from the South China Sea for the first time. Our specimens are very similar to L. rosacea recently described from New Caledonia, not only in morphology but also in rbcL and cox3 gene sequences. The fan-shaped thallus grows erectly, attaching to the substrate by a basal holdfast. The thallus is composed of a single layer of large medullary cells and three to four layers of cortical cells on both sides of the medulla. Mature sporophytes are detected, with sporangium sori scattered on both surfaces of the thallus.展开更多
A new species Lobophora tsengii is described from Bach Long Vy(Bailongwei)Island,Haiphong Province,Vietnam.The plants inhabit the subtidal zone and have predominantly erect fan-shaped thalli that attach to the substra...A new species Lobophora tsengii is described from Bach Long Vy(Bailongwei)Island,Haiphong Province,Vietnam.The plants inhabit the subtidal zone and have predominantly erect fan-shaped thalli that attach to the substrate by a basal holdfast.The thallus is commonly composed of a single layer of large medullary cells with four layers of cortical cells on either side of the medulla.The newly collected specimens from the island are morphologically similar to those from Hainan Island,China,but differ from the New Caledonian ones in having thicker thallus.In molecular phylogenetic analyses based on concatenated rbcL and cox3 s equences,the specimens from the island were 100%identical to those from Hainan Island,China,and they formed a clade separating from other Lobophora species.Additionally,based on analyses of numerous cox3 s equences,our specimens were also distinguished from the closely related taxa occurring in New Caledonia,Kenya,and West Australia.Combining the morphological and molecular analyses,we conclude that our specimens represent a new species of Lobophora,which is apparently endemic to the Beibu Gulf(Gulf of Tonkin)and adjacent waters.展开更多
文摘Green algae represent the fastest producible source of biomass that has diverse uses as biofuel, food, feed-stocks and the like. The biomass is rich in oils, which can be used as biofuel and the cultivation may be used to purify water as well. Productivity and quality of algal biomass depends on species and strains as well as environmental conditions of growth. Therefore, identification of new species and strains as well as standardization of media composition and environmental conditions for optimum yield of specific products, especially oil has a high relevance in algal technological research. In this connection, biomass productivity and oil yield of a local strain of Chlorella lobophora in BBM and modified BBM media are compared. Chemical characterization of the oil and feasibility of biodiesel production from the extracted oil is also assessed. Biomass productivity and the lipid productivity of the alga in both the media are found to be significantly different (P < 0.05). Fatty acid profiling of the oil extracted from the dried algal biomass using GC-MS analysis reveals that Palmitic acid (16:0) and Oleic acid (18:1) are the major fatty acids and nutraceutically important fatty acids are also present. The oil can be effectively transesterified to methyl esters. FTIR spectroscopy confirms the quality of the biodiesel produced. As the potentials of this local algal strain for biomass production and oil yield is confirmed, further standardization of environment conditions for better oil yield and quality biomass production is progressing to optimize its value as globally competent nutraceutical and biofuel resource.
基金Supported by the National Natural Science Foundation of China(No.31200163)the Zhejiang Provincial Natural Science Foundation of China(No.LQ12B02002)the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA11020303)
文摘Lobophora rosacea C.W. Vieira, Payri et De Clerck is reported from the South China Sea for the first time. Our specimens are very similar to L. rosacea recently described from New Caledonia, not only in morphology but also in rbcL and cox3 gene sequences. The fan-shaped thallus grows erectly, attaching to the substrate by a basal holdfast. The thallus is composed of a single layer of large medullary cells and three to four layers of cortical cells on both sides of the medulla. Mature sporophytes are detected, with sporangium sori scattered on both surfaces of the thallus.
基金Supported by the Vietnam Ministry of Science and Technology(No.KC.09.23/16-20)the Scientific Research Activities for Senior Researchers in 2021(No.NCVCC23.05/21-21)+1 种基金the Chinese National Projects,the Science and Technology Basic Resources Investigation Program of China(No.2018FY100205)the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA23050304)。
文摘A new species Lobophora tsengii is described from Bach Long Vy(Bailongwei)Island,Haiphong Province,Vietnam.The plants inhabit the subtidal zone and have predominantly erect fan-shaped thalli that attach to the substrate by a basal holdfast.The thallus is commonly composed of a single layer of large medullary cells with four layers of cortical cells on either side of the medulla.The newly collected specimens from the island are morphologically similar to those from Hainan Island,China,but differ from the New Caledonian ones in having thicker thallus.In molecular phylogenetic analyses based on concatenated rbcL and cox3 s equences,the specimens from the island were 100%identical to those from Hainan Island,China,and they formed a clade separating from other Lobophora species.Additionally,based on analyses of numerous cox3 s equences,our specimens were also distinguished from the closely related taxa occurring in New Caledonia,Kenya,and West Australia.Combining the morphological and molecular analyses,we conclude that our specimens represent a new species of Lobophora,which is apparently endemic to the Beibu Gulf(Gulf of Tonkin)and adjacent waters.
