Ultrasound Assisted Extraction Of Amino Acids And Nucleobases From Clay Minerals And Astrobiological Samples
The study of organic molecules in meteorite and return samples allows for the understanding of the chemistry that undergoes in our Solar System. The present work aims at studying ultrasound assisted extraction technique as effective extraction method for these molecules in extraterrestrial samples and analogs.
Optimal conditions were selected from the investigation of ultrasonic frequency, irradiation duration and solvent effects on amino acids, nucleobases and dipeptides extraction yields from a model clay-rich mineral matrix.
Optimal ultrasound-assisted extraction parameters were frequency of 20 kHz within 20 min irradiation time and methanol/water solvent ratio of 1. We then validated this protocol on Mukundpura and Tarda meteorite fragments and compared it to the reference extraction protocol used in astrobiology and based on 24 h extraction time at 100 °C in water We obtained similar quantitative results without any racemization with both methodologies.
Ramzi Timoumi, Prince Amaniampong, Aurelie Le Postollec, Michel Dobrijevic, Guillaume Rioland, Brian Gregoire, Pauline Poinot, Claude Geffroy Rodier
Ultrasound assisted extraction of amino acids and nucleobases from clay minerals and astrobiological samples, Ultrasonics Sonochemistry (open access)
https://www.x-mol.net/paper/detail/1750065514394914816
https://www.sciencedirect.com/science/article/pii/S1350417724000233
Ultrasonics Sonochemistry ( IF 8.4 ) Pub Date: 2024-01-23 , DOI:10.1016/j.ultsonch.2024.106775
Astrobiology, Astrochemistry
