The influence of different storage conditions on Limnospira indica, a promising candidate for air revitalisation in Space

Author:

Leys Natalie1ORCID,Fahrion Jana1,Ellena Gabriele2ORCID,Mastroleo Felice3ORCID,Dussap Claude-Gilles4

Affiliation:

1. SCK CEN

2. Università degli Studi di Napoli Federico II

3. Belgian Nuclear Research Centre (SCK CEN)

4. Université Clermont Auvergne

Abstract

Abstract

Limnospira indica is a cyanobacterium which is currently investigated as a candidate for life support systems in space. Transport to space starts with a storage phase, the time span between leaving the laboratory on Earth and the activation of the bioprocess in space. Here, the cells are kept in dormancy at 4°C, because energy is limited during the upload. This period can take up to two weeks and the influence on living biomass has not been extensively studied. This paper elucidates the influence of dark and cold storage on Limnospira indica growth and composition. The impact depends on gas availability, duration, nutrient availability during storage and initial cell density, pH and pigment content. Additionally, to simulate storage after the arrival of Limnospira indica onboard the ISS, a 14 days cold storage was performed using a dedicated simulated microgravity setup. No negative effect of simulated microgravity was found, when a healthy culture is used.

Publisher

Springer Science and Business Media LLC

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