Journal of the European Optical Society - Rapid publications, Vol 5 (2010)

Investigating the effects of laser beams (532 and 660 nm) in annihilation of pistachio mould fungus using spectrophotometry analysis

S. Saghafi, R. Penjweini, K. Becker, K. W. Kratky, H.-U. Dodt


When moulds are illuminated by visible electromagnetic-EM radiations, several effects on nucleus materials and nucleotides can be detected. These effects have a significant influence on mould generation or destruction. This paper presents the effects and implications of a red diode laser beam (660 nm), a second-harmonics of a Nd:YAG laser emitting green beam (532 nm), or the combination of both, on the eradication of Pistachio mould fungus. Incident doses (ID) of both beams are kept identical throughout the experiment. The absorption spectrums of irradiated mouldy samples and the bright-greenish-yellow-fluorescence (BGYF) of fungus occurring in mould texture due to electronic excitation are investigated. We found that a combination of a green and a red laser beam with an ID of 0.5 J/cm^2 provides the optimal effects on Pistachio mould fungus eradication.

© The Authors. All rights reserved. [DOI: 10.2971/jeos.2010.10033s]

Full Text: PDF

Citation Details

Cite this article


World Pistachio Situation and Outlook (World Horticultural Trade & U.S. Export Opportunities, 2004).

F. Emeksiz, and S. Sengül, FAO-CIHEAM (Nucis-Newsletter No. 8, 1999).

M. Aghamohammadi, J. Hashemi, Gh. Asadi Kram, and N. Alizadeh, "Enhanced synchronous spectrofluorimetric determination of aflatoxin B1 in pistachio samples using multivariate analysis" Anal. Chim. Acta 582, 288-294 (2007).

E. A. Bailey, R. S. Iyer, Th. M. Harris, and J. M. Essigmann, "A viral genome containing an unstable aflatoxin B1-N7-guanine DNA adduct situated at a unique site" Nucleic Acids Res. 24, 2821-2828 (1996).

S. Amézqueta, E. González-Peñas, M. Murillo-Arbizu, and A. López de Cerain, "Ochratoxin A decontamination: a review" Food Control 20, 326-333 (2009).

I. Kralj Cigi´c, and H. Prosen, "An overview of conventional and emerging analytical methods for the determination of mycotoxins" Int. J. Mol. Sci 10, 62-115 (2009).

D. P. Morgavi, and R. T. Riley, "An historical overview of field disease outbreaks known or suspected to be caused by consumption of feeds contaminated with Fusarium toxins" Anim. Feed Sci. Tech. 137, 201-212 (2007).

N. H. Aziz, F. M. El-Far, A. A. M. Shahin, and S. M. Roushy, "Control of Fusarium moulds and fumonisin B1 in seeds by gammairradiation" Food Control 18, 1337-1342 (2007).

E. Schneider, V. Curtui, C. Seidler, R. Dietrich, E. Usleber, and E. Märtlbauer, "Rapid methods for deoxynivalenol and other trichothecenes" Toxicol. Lett. 153, 113-121 (2004).

G. Prado, E. P. de Carvalho, M. S. Oliveira, J. G. Cruz Madeira, V. D. Morais, R. F. Correa, V. N. Cardoso, T. V. Soares, J. F. M. da Silva, and R. C. P. Gonçalves, "Effect of gamma radiation on the inactivation of aflatoxin B1 and fungal flora in peanut" Braz. J. Microbiol. 34, 138-140 (2003).

I. Ghanem, M. Orfi, and M. Shamma, "Effect of gamma radiation on the inactivation of aflatoxin B1 in food and feed crops" Braz. J. Microbiol. 39, 787-791 (2008).

Wastewater Depot UV Disinfection Technical Information, Specification-Drawings - Design Criteria Case Histories - Operation & Maintenance-Safety, Ultraviolet (UV) Disinfection- Technical Information (Tipton Environmental International, Ohio, 2009).

V. S. Letokhov, "Laser-induced chemistry" Nature 305, 103-108 (1983).

A. Amat, J. Rigau, R. W. Waynant, I. K. Ilev, and J. J. Anders, "The electric field induced by light can explain cellular responses to electromagnetic energy: A hypothesis of mechanism" J. Photoch. Photobio. B 82, 152-160 (2006).

T. Karu, "Photobiology of low-power laser effects" Health Phys. 56, 691-704 (1989).

T. Karu, "Low-power laser therapy" in Biomedical Photonics Handbook, T. VoDinh, ed., 48, 1-25 (CRC Press, Boca Raton, 2003).

A. Peris, J. Tirry, B. Verlinden, P. Darius, and B. M. Nicoai, "Effect of biological variability on the robustness of NIR models for soluble solids content of apples" Postharvest Biol. Tec. 28, 269-280 (2003).

D.-W. Sun, Computer vision technology for food quality evaluation (Academic Press, London, 2008).

G. El Masry, N. Wang, A. El Sayed, and M. Ngadi, "Hyperspectral imaging for nondestructive determination of some quality attributes for strawberry" J. Food Eng. 81, 98-107 (2007).

R. S. Snart, "The electrical properties and stability of DNA to UV radiation and aromatic hydrocarbons" Biopolymers 12, 1493-1503 (2004).

C. Reed, Import Risk Analysis: Litchi (Litchi chinensis) fresh fruit from Australia (Biosecurity New Zealand Ministry of Agriculture and Forestry, Wellington, 2008).

A. P. Vasilkov, J. Herman, N. A. Krotkov, B. Greg Mitchell, and C. Hsu, "Problems in assessment of the ultraviolet penetration into natural waters from space-based measurements" Opt. Eng. 41, 3019-3027 (2002).

H. A. Sadafi, Zh. Mehboodi, and D. Sardari, A review of the mechanisms of interaction between the extremely low frequency electromagnetic fields and human biology (Progress In Electromagnetics Research Symposium 2006, Cambridge, 26-29 March 2006).

E. H. Grant, R. J. Sheppard, and G. P. South, Dielectric Behavior of Biological Molecules in Solution (Clarendon Press, Oxford, 1978).

R. P. Feynman, R. B. Leighton, and M. Sands, The Feynman Lectures on Physics (Addison-Wesley, Massachusetts, 1963).

M. Born, and E. Wolf, Principles of Optics (Seventh Expanded Edition, Cambridge University Press, Cambridge, 1999).

A. N. Rubinov, Noncoherent Light (Stepanov Institute of Physics, National Academy of Science of Belarus, 2003).

A. N. Rubinov, "Physical grounds for biological effect of laser radiation" J. Phys. D. Appl. Phys. 36, 2317-2330 (2003).

T. Karu, L. Pyatibrat, and G. Kalendo, "Irradiation with He-Ne laser increases ATP level in cells cultivated in vitro" J. Photoch. Photobio. B 27, 219-223 (1995).

V. Manteifel, L. Bakeeva, and T. Karu, "Ultrastructural changes in chondriome of human lymphocytes after irradiation with He-Ne laser: appearance of giant mitochondria" J. Photoch. Photobio. B 38, 25-30 (1997).

C. M. Kacher, H. Klima, and K. W. Kratky, "Suppressive influence of periodic and chaotic laser light on cancer cells" Int. J. Mod. Iden. Cont. 5, 214-220 (2008).

M. A. Doster, and T. J. Michailides, "Production of bright greenish yellow fluorescence in figs infected by aspergillus species in California orchards" Plant Dis. 82, 669-673 (1998).

H. Muhammed, "Hyperspectral crop reflectance data for characterising and estimating fungal disease severity in wheat" Biosyst. Eng. 91, 9-20 (2005).

H. A. David, and J. L. Gunnink, "The paired t test Under artificial pairing" The American Statistician 51, 9-12 (1997).

G. Currell, and A. Dowman, Essential Mathematics and Statistics for Science (Second Edition, John Wiley & Sons, Chichester, 2009).