Microbial radiosensitization using combined treatments of essential oils and irradiation- part B: Comparison between gamma-ray and X-ray at different dose rates.

Microbial Pathogenesis
Shiv ShankarM Lacroix

Abstract

Stored rice and rice products are prone to contamination by pathogenic fungi and bacteria such as Aspergillus niger, Bacillus cereus, and Paenibacillus amylolyticus. Treatment with antimicrobial essential oils (EOs) and irradiation are options to control spoilage organisms. Microbial samples with or without fumigation with an oregano/thyme EO mixture were irradiated at 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5 kGy for calculation of a D10 value. The relative sensitivity was calculated as the ratio of D10 values for the irradiation plus oregano and thyme EO combination and irradiation alone treatments. In all cases, irradiation plus fumigation with the oregano and thyme EO mixture showed increased efficacy compared with irradiation alone. The relative sensitivity of γ-ray irradiation against A. niger was 1.22, 1.33, and 1.24 for radiation dose rates of 10.445, 4.558, and 0.085 kGy/h, respectively, however against B. cereus it was 1.28, 1.45, and 1.49, and against P. amylolyticus it was 1.35, 1.33, and 1.38, for respective γ-ray irradiation dose rates. The relative sensitivity of X-ray irradiation against A. niger, B. cereus, and P. amylolyticus was 1.63, 1.21, and 1.31, respectively, at the X-ray dose rate of 0.76 kGy/h. The re...Continue Reading

References

Aug 1, 1995·International Journal of Food Microbiology·G Blank, D Corrigan
Jul 8, 2000·British Medical Bulletin·K L Brown
Nov 25, 2003·Journal of Food Protection·A MahrourM Lacroix
Jun 30, 2004·Journal of Food Protection·F ChiassonM Lacroix
May 11, 2010·International Journal of Food Microbiology·Dobroslawa BialonskaDaneel Ferreira
Nov 3, 2010·Research in Microbiology·Sonia SenesiEmilia Ghelardi
Jul 26, 2011·International Journal of Radiation Biology·Jyoti Prakash MaitySubhas C Santra
Aug 29, 2018·Journal of Food Science and Technology·Fei LyuLin Liu

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