Lipids are among the organic substances that can work as biosignatures, indicating life in an environment. We present an experimental investigation concerning analysis of lipids from a microbial source deposited on the Mars Global Simulant (MGS-1) regolith by geomatrix-assisted laser desorption/ionization-mass spectrometry (GALDI-MS). Our results indicate that lipids from intact microbial cells of a black yeast strain can be detected in these mimetic samples of Martian soil. These lipid molecules are predominantly associated with the occurrence of adducts in the GALDI-MS spectra. The results can be helpful in the planning of future planetary missions.

中文翻译：

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通过几何基质辅助激光解吸/电离质谱法分析沉积在火星全球模拟物 (MGS-1) 上的微生物脂质

脂质是可以作为生物特征的有机物质之一，表明环境中的生命。我们提出了一项关于通过几何基质辅助激光解吸/电离质谱法 (GALDI-MS) 分析沉积在火星全球模拟物 (MGS-1) 风化层上的微生物来源的脂质的实验研究。我们的研究结果表明，可以在这些火星土壤模拟样品中检测到来自黑色酵母菌株完整微生物细胞的脂质。这些脂质分子主要与 GALDI-MS 光谱中加合物的出现有关。结果可能有助于规划未来的行星任务。