Research Note: Penetration of Ozone Gas Across the Shell of Hen Eggs

Authors: Rodriguez-Romo, Luis A.; Vurma, Mustafa; Lee, Ken; Yousef, Ahmed E.

Source: Ozone: Science and Engineering, Volume 29, Number 2, March 2007 , pp. 147-150(4)

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Abstract:

Increasing evidence indicates that ozone gas is effective against Salmonella on and within shell eggs. However, information on the penetration of ozone across egg shell is limited. In this study, whole hen egg shells, filled with indigotrisulfonate solution (OD600 ∼1), were exposed to ozone gas (12-14% wt/wt O3 in O2) at 1.5 liters/min and atmospheric pressure for ≤ 40 min with appropriate controls. Ozone penetrated the shells over time (r2 = 0.9974) causing indigo decoloration and increasing its transmittance from 16 to 28% after gas exposure for 40 min. This study confirms ozone penetration through egg shell using a simple qualitative technique.

Keywords: Ozone; Egg Shells; Eggs; Indigotrisulfonate; Ozone Measurement; Gas Diffusion

Document Type: Research article

DOI: http://dx.doi.org/10.1080/01919510601187087

Affiliations: 1: Department of Food Science and Technology, The Ohio State University, Columbus, Ohio, USA

Publication date: 2007-03-01