Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Automated detection of fecal contamination of apples by multispectral laser-induced fluorescence imaging

Not Accessible

Your library or personal account may give you access

Abstract

Animal feces are a suspected source of contamination of apples by disease-causing organisms such as Escherichia coli O157. Laser-induced fluorescence was used to detect different amounts of feces from dairy cows, deer, and a dairy pasture applied to Red Delicious apples. One day after application, detection for 1:2 and 1:20 dilutions was nearly 100%, and for 1:200 dilutions (<15 ng of dry matter) detection was >80%. Detection after apples had been washed and brushed was lowest for pasture feces; detection for 1:2, 1:20, and 1:200 dilutions of feces was 100%, 30%, and 0%, respectively. This technology may encourage development of commercial systems for detecting fecal contamination of apples.

© 2003 Optical Society of America

Full Article  |  PDF Article
More Like This
Detection of fecal contamination on apples with nanosecond-scale time-resolved imaging of laser-induced fluorescence

Alan M. Lefcourt, Moon S. Kim, and Yud-Ren Chen
Appl. Opt. 44(7) 1160-1170 (2005)

Multispectral fluorescence lifetime imaging of feces-contaminated apples by time-resolved laser-induced fluorescence imaging system with tunable excitation wavelengths

Moon S. Kim, Byoung-Kwan Cho, Alan M. Lefcourt, Yud-Ren Chen, and Sukwon Kang
Appl. Opt. 47(10) 1608-1616 (2008)

Multispectral laser-induced fluorescence imaging system for large biological samples

Moon S. Kim, Alan M. Lefcourt, and Yud-Ren Chen
Appl. Opt. 42(19) 3927-3934 (2003)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved