Details

Autor(en) / Beteiligte

• Timoumi, Ramzi
• Amaniampong, Prince
• Le Postollec, Aurelie
• Dobrijevic, Michel
• Rioland, Guillaume
• Gregoire, Brian
• Poinot, Pauline
• Rodier, Claude Geffroy

Titel

Ultrasound assisted extraction of amino acids and nucleobases from clay minerals and astrobiological samples

Ist Teil von

• Ultrasonics sonochemistry, 2024-02, Vol.103, p.106775-106775, Article 106775

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• [Display omitted] •This paper constitutes a step forward in ultrasonic extraction of biomolecules from clays rich sample and meteorites.•It presents a fast and efficient ultrasonic extraction compared to highly energy and time-consuming hot water extraction.•The proof of concept has been made extracting amino acids and nucleobases from meteorites. 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.