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Description
Title: | Inactivation of Escherichia coli O157:H7 on raw vegetable sprouts |
Author(s): | Fransisca, Lilia |
Advisor(s): | Feng, Hao |
Department / Program: | Food Science & Human Nutrition |
Discipline: | Food Science & Human Nutrition |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | M.S. |
Genre: | Thesis |
Subject(s): | E. coli O157:H7
calcinated calcium sprouts seeds chlorine treatment surface roughness organic acid surfactant |
Abstract: | The effect of chlorine wash in combination with calcinated calcium spray on E. coli O157:H7 population reduction on radish sprouts was investigated. The results showed that spraying radish seeds soaked in 200 ppm chlorine solution with 0.04% calcinated calcium solution had potential in inhibiting growth of E. coli O157:H7. The study also demonstrated that 20,000 ppm chlorine wash was not sufficient to completely eliminate E. coli O157:H7 on radish seeds. The effect of seed surface roughness on E. coli O!57:H7 population reduction by selected sanitizers was also studied. Among the seeds tested, radish seed was the roughest followed by broccoli and alfalfa seeds. A combination of 10% malic acid and 1% TDS (a surfactant) seemed to be as or more effective than 20,000 ppm chlorine in inactivating E. coli O157:H7 on alfalfa, broccoli, and radish seeds. In general, there was a negative correlation between seed surface roughness and E. coli O157:H7 population reduction. |
Issue Date: | 2011-05-25 |
URI: | http://hdl.handle.net/2142/24375 |
Rights Information: | Copyright 2011 Lilia Fransisca |
Date Available in IDEALS: | 2011-05-25 2013-05-26 |
Date Deposited: | 2011-05 |
This item appears in the following Collection(s)
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Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois -
Dissertations and Theses - Food Science and Human Nutrition