Our study investigates the dynamic variation of bacterial populations within the Bioregenerative Life Support System(BLSS),a critical component for sustainable habitats in extraterrestrial environments supporting huma...Our study investigates the dynamic variation of bacterial populations within the Bioregenerative Life Support System(BLSS),a critical component for sustainable habitats in extraterrestrial environments supporting human survival.We utilized the ground-based BLSS test platform,referred to as “Lunar Palace 1”(LP1),to examine bacterial dynamics in an ecosystem integrating plant production,human cultivation,and equipment maintenance.Our findings reveal distinct bacterial compositions among crew members and functional areas within the LP1 system while preserving temporal stability across the 370-day experiment.Importantly,we observed a low abundance of potential pathogens,minimal antibiotic resistance,and negligible impact of the isolated bacterial strains on equipment materials,suggesting favorable biosafety attributed to plant integration.Our work enhances the understanding of microbial communities in BLSS and underscores the importance of incorporating green plants to bolster environmental biosafety and sustainability in long-term space exploration missions.展开更多
Culture ofArthrospiraplatensis （Spirulinaplatens） in human urine was investigated to get valuable biomass. NO3-N was the proper N source, in comparison with other N source, including urea, NH4-N and NO2-N. As a resu...Culture ofArthrospiraplatensis （Spirulinaplatens） in human urine was investigated to get valuable biomass. NO3-N was the proper N source, in comparison with other N source, including urea, NH4-N and NO2-N. As a result, aerobic nitrification of human urine was performed, with above 93.6% nitrification percentage finally achieved with total-N （TN） load of 46.52 mg/（L.d）, in which Arthrospira platensis was successfully grown. The main compositions of the obtained biomass are close to those in Zarrouk medium. Thus, it is possible to culture Arthrospiraplatensis in nitrified human urine for food production within bioregenerative life support systems （BLSSs）.展开更多
基金supported by the National Key Research and Development Program of China (2021YFA0716100)the National Natural Science Foundation of China (32261133528,82271921,32471289)。
文摘Our study investigates the dynamic variation of bacterial populations within the Bioregenerative Life Support System(BLSS),a critical component for sustainable habitats in extraterrestrial environments supporting human survival.We utilized the ground-based BLSS test platform,referred to as “Lunar Palace 1”(LP1),to examine bacterial dynamics in an ecosystem integrating plant production,human cultivation,and equipment maintenance.Our findings reveal distinct bacterial compositions among crew members and functional areas within the LP1 system while preserving temporal stability across the 370-day experiment.Importantly,we observed a low abundance of potential pathogens,minimal antibiotic resistance,and negligible impact of the isolated bacterial strains on equipment materials,suggesting favorable biosafety attributed to plant integration.Our work enhances the understanding of microbial communities in BLSS and underscores the importance of incorporating green plants to bolster environmental biosafety and sustainability in long-term space exploration missions.
基金Project (No. 10376032) supported by the Natural Science Association Foundation of China (NSAF)
文摘Culture ofArthrospiraplatensis （Spirulinaplatens） in human urine was investigated to get valuable biomass. NO3-N was the proper N source, in comparison with other N source, including urea, NH4-N and NO2-N. As a result, aerobic nitrification of human urine was performed, with above 93.6% nitrification percentage finally achieved with total-N （TN） load of 46.52 mg/（L.d）, in which Arthrospira platensis was successfully grown. The main compositions of the obtained biomass are close to those in Zarrouk medium. Thus, it is possible to culture Arthrospiraplatensis in nitrified human urine for food production within bioregenerative life support systems （BLSSs）.
