Journal
INTERNATIONAL JOURNAL OF ASTROBIOLOGY
Volume 6, Issue 4, Pages 281-289Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1473550407003837
Keywords
amino acids; astrobiology; chemical evolution; origin of life; UV irradiation of amino acids
Funding
- Agenzia Spaziale Italiana
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The effects of near ultraviolet (UV) irradiation oil water solutions of phenylalanine and tryptophan have been investigated using a broad-band xenon lamp in the region 200-800 nm. This is a step in the laboratory simulation of the effects of Solar radiation oil the building blocks or life, specifically alpha-amino acids, with regards to the origin of life. Results are presented showing the photodegradation of phenylalanine and tryptophan against different UV doses. Some of the degradation products are still protein amino acids. An analysis of the irradiated Solutions is carried out by spectroscopic and analytic techniques. The laboratory simulations are discussed in the wake of a life emerging scenario on the primitive Earth.
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