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Proceedings Paper

Biostimulation effects of low-energy laser radiation on yeast cell suspensions
Author(s): Sorin Anghel; Constantin S. Stanescu; Dana Giosanu; Ionica Neagu; Geta Savulescu; Ion Iorga-Siman
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Paper Abstract

This paper presents work to determine the effects produced by low energy laser radiation on the metabolism and growth of a yeast cell suspension. As experimental material, we used young yeast culture in liquid medium, then distributed on a solid medium, to obtain isolated colonies. As laser source, we used a He-Ne laser, and the irradiation was made with different exposure times. Form each irradiated material, a sample of white grape sterile must was sowed, that has fermented at 18 divided by 20 degrees C for 10 divided by 15 days, after that some properties was tested. Some microscopic studies were also made. The results prove some influence of low energy laser irradiation, which can induce mutations, with new properties of the irradiated material. These mutations can be obtained in a positive sense, with new and important perspectives in wine industry. Also, we observed an inhibitory effect of the laser radiation on the yeast cell growth, due, probably to the too high values of the exposure.

Paper Details

Date Published: 23 February 2000
PDF: 6 pages
Proc. SPIE 4068, SIOEL '99: Sixth Symposium on Optoelectronics, (23 February 2000); doi: 10.1117/12.378639
Show Author Affiliations
Sorin Anghel, Univ. of Pitesti (Romania)
Constantin S. Stanescu, Univ. of Pitesti (Romania)
Dana Giosanu, Univ. of Pitesti (Romania)
Ionica Neagu, Univ. of Pitesti (Romania)
Geta Savulescu, Wine-Growing Research Station (Romania)
Ion Iorga-Siman, Univ. of Pitesti (Romania)

Published in SPIE Proceedings Vol. 4068:
SIOEL '99: Sixth Symposium on Optoelectronics
Teodor Necsoiu; Maria Robu; Dan C. Dumitras, Editor(s)

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