[H-CG36] Systems of life in closed-ecology on planets

[HCG36-04] Evaluation of nutritional utilization of Nostoc sp. HK-01, as a food resource in closed bio-ecosystems

*Yasuko KIMURA¹, Shunta KIMURA², Hiroshi KATOH³, Mayumi ARAI⁴, Seigo SATO², Kaori TOMITA-YOKOTANI² (1.University of Tsukuba and Jumonji University, 2.University of Tsukuba, 3.Mie University, 4.National Museum of Emerging Science and Innovation)

Keywords:closed bio-ecosystems, cyanobacteria, food resource, Nostoc sp.HK-01, nutritional utilization

We study life-support in closed bio-ecosystems to provide food and oxygen for habitation in severe environments. We propose several species of organisms as candidate species. A terrestrial cyanobacterium, Nostoc sp. HK-01 has several unique abilities, photosynthesis, nitrogen fixation and tolerance to a space environment. Here, we propose to utilize Nostoc sp. HK-01 as a food resource in space environments such as Mars. Nostoc sp. HK-01 appears to have high nutritional values for humans. We will discuss the nutritional utilization of Nostoc sp. HK-01 in closed bio-ecosystems. Our results may contribute to the supply of food resources under severe conditions for life-support in closed bio-ecosystems.