Process for ozone-based decontamination of shell eggs
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A23L-001/32
A23B-005/00
A23B-005/10
출원번호
US-0862206
(2004-06-07)
등록번호
US-7491417
(2009-02-17)
발명자
/ 주소
Yousef,Ahmed E.
Rodriguez Romo,Luis A.
출원인 / 주소
The Ohio State University Research Foundation
대리인 / 주소
Calfee, Halter & Griswold LLP
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
Methods for reducing external and internal contamination of shell eggs by utilizing gaseous ozone applied under mild pressure, alone or in combination with UV radiation for external contaminants and gaseous ozone under mild pressure, a mix of carbon dioxide and ozone, heat, vacuum, or combinations t
Methods for reducing external and internal contamination of shell eggs by utilizing gaseous ozone applied under mild pressure, alone or in combination with UV radiation for external contaminants and gaseous ozone under mild pressure, a mix of carbon dioxide and ozone, heat, vacuum, or combinations thereof for internal contaminants.
대표청구항▼
What is claimed: 1. A process for treating shell eggs to reduce internal Salmonella Enteritidis contamination in the eggs, if any, comprising: (a) heating the shell eggs at a temperature of about 55 to 60�� C. for about 1 to 60 minutes, (b) subjecting the eggs to a vacuum of about 5 to 29.9 inches
What is claimed: 1. A process for treating shell eggs to reduce internal Salmonella Enteritidis contamination in the eggs, if any, comprising: (a) heating the shell eggs at a temperature of about 55 to 60�� C. for about 1 to 60 minutes, (b) subjecting the eggs to a vacuum of about 5 to 29.9 inches Hg, and thereafter (c) maintaining the shell eggs in contact with a treating gas containing about 2-14 wt. % ozone at a pressure above atmospheric pressure for about 1 to 60 minutes. 2. The process of claim 1, wherein the shell eggs are at or below room temperature when subjected to the vacuum. 3. The process of claim 1, wherein steps (c) and (e) are carried out under conditions which are severe enough to reduce Salmonella Enteritidis contamination inside the shell eggs, if any, by an amount of at least 0.8 log CFU/g. 4. The process of claim 1, wherein steps (a), (c) and (e) are carried out under conditions which are severe enough to reduce the Salmonella Enteritidis contamination inside the shell eggs, if any, from an initial value to a final value, wherein the initial value is about 6.5 to 7.9 log CFU/g, and further wherein the final value is at least about 4.2 log CFU/g less than the initial value. 5. The process of claim 4, wherein the final value is at least about 5 log CFU/g less than the initial value. 6. The process of claim 1, wherein the treatment gas comprises at least about 3.6 vol. % ozone. 7. The process of claim 6, wherein the treatment gas comprises at least about 4.4 vol. % ozone. 8. The process of claim 7, wherein the treatment gas comprises about 12-14 wt. % ozone. 9. A process for treating shell eggs to reduce internal contamination of the shell eggs with Salmonella Enteritidis, if any, comprising preheating the shell eggs to reduce the Salmonella Enteritidis contamination inside the shell eggs, if any, by at least about 1 log CFU/g, preheating being accomplished by heating the shell eggs at a temperature of about 55-60�� C. for about 10 to 40 minutes, after termination of preheating, subjecting the shell eggs to a vacuum of about 5 to 30 inches Hg, and thereafter contacting the shell eggs with a treatment gas containing at least about 2 wt. % ozone for a time sufficient to reduce Salmonella Enteritidis contamination inside the shell eggs by an additional amount of at least about 0.8 log CFU/g. 10. The process of claim 9, wherein the shell eggs are at or below room temperature when subjected to the vacuum. 11. The process of claim 9, wherein the pressure of the treatment gas surrounding the shell eggs is raised to above atmospheric pressure, and wherein the shell eggs are maintained in contact with the treatment gas at above atmospheric pressure for about 1 to 60 minutes. 12. The process of claim 11, wherein the shell eggs are preheated and then contacted with an ozone-containing treating gas under conditions severe enough to reduce the concentration of Salmonella Enteritidis contamination inside the shell eggs from an initial value to a final value, wherein the initial value is about 6.5 to 7.9 log CFU/g, and further wherein the final value is at least about 4.2 log CFU/g less than the initial value. 13. The process of claim 12, wherein the final value is at least about 5 log CFU/g less than the initial value. 14. The process of claim 11, wherein the treatment gas comprises at least about 3.6 vol. % ozone. 15. The process of claim 14, wherein the treatment gas comprises at least about 4.4 vol. % ozone. 16. The process of claim 15, wherein the treatment gas comprises about 12-14 wt. % ozone. 17. The process of claim 10, wherein the treatment gas comprises about 2-14 wt. % ozone. 18. The process of claim 9, wherein the shell eggs are contacted with the treatment gas for a time sufficient to reduce Salmonella Enteritidis contamination inside the yokes of the shell eggs by an additional amount of at least about 1.4 log CFU/g. 19. The process of claim 9, wherein the shell eggs are preheated and then contacted with an ozone-containing treating gas under conditions severe enough to reduce the concentration of Salmonella Enteritidis contamination inside the yokes of the shell eggs from an initial value to a final value, wherein the initial value is about 6.5 to 7.9 log CFU/g, and further wherein the final value is at least about 4.2 log CFU/g less than the initial value. 20. The process of claim 9, wherein the shell eggs are preheated and then contacted with an ozone-containing treating gas under conditions severe enough to reduce the concentration of Salmonella Enteritidis contamination in the area surrounding the vitelline membrane outside the yokes of the shell eggs from an initial value to a final value, wherein the initial value is about 6.9 log CFU/g and the final value is at least about 5.7 log CFU/g less than the initial value. 21. A process for treating-shell eggs to reduce internal Salmonella Enteritidis contamination in the eggs, if any, comprising: (a) subjecting shell eggs previously heated to a temperature of about 55 to 60�� C. for about 1to 60 minutes to a vacuum of about 5 to 29.9 inches Hg, and thereafter (e) maintaining the shell eggs in contact with a treating gas containing about 2-14 wt. % ozone at a pressure of about 5 to 29.9 inches Hg for a time long enough to reduce the internal Salmonella Enteritidis contamination of the shell eggs, if any, from an initial value before heating of about 6.5 to 7.9 log CFU/g to a final value at least about 4.2 log CFU/g less than the initial value.
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이 특허에 인용된 특허 (11)
Cox ; deceased James P. ; Cox ; executor by Robert W. Duffy, Apparatus for non-invasive forced oxygen enrichment of avian eggs.
Schmitthaeusler Roland (Montigny-le-Bretonneux FRX) Bardat Annie (Limours FRX), Method for decontaminating or sterilizing “in situ”a vacuum sealed container and device for implementing such method.
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