A5069380474- Spectroscopy and Chemometric Analyses
- Meat and Animal Product Quality
- Spectroscopy Techniques in Biomedical and Chemical Research
- Animal Nutrition and Physiology
- Advanced Chemical Sensor Technologies
- Microwave and Dielectric Measurement Techniques
- Food Drying and Modeling
- Listeria monocytogenes in Food Safety
- Soil Moisture and Remote Sensing
- Remote-Sensing Image Classification
- Salmonella and Campylobacter epidemiology
- Identification and Quantification in Food
- Microbial Inactivation Methods
- Plasma Applications and Diagnostics
- Image Processing Techniques and Applications
- Biosensors and Analytical Detection
- Acoustic Wave Resonator Technologies
- Water Quality Monitoring and Analysis
- Optical Imaging and Spectroscopy Techniques
- Animal Behavior and Welfare Studies
- Photoacoustic and Ultrasonic Imaging
- Mycotoxins in Agriculture and Food
- Smart Agriculture and AI
- Cell Image Analysis Techniques
- Industrial Vision Systems and Defect Detection
U.S. National Poultry Research Center
2005-2024
Agricultural Research Service
2012-2022
United States Department of Agriculture
2009-2019
The University of Queensland
2015
Richard Wolf (Germany)
2013
U.S. Horticultural Research Laboratory
2010
Kaiser Permanente
2010
Quality Research
2003
University of Graz
2000
Health Sciences Centre
1998
A method to calibrate a pushbroom hyperspectral imaging system has been demonstrated for use in agriculturalinspection where the imaged object is close system. The consists of modified geometric control pointcorrection remove smile and keystone effect from system, both wavelength distance calibrations reduce thewavelength errors less than 0.5 nm 0.01 mm (across entrance slitwidth), respectively. Next, apixelbypixel percent reflectance calibration was performed at all wavelengths with dark...
The objective of this study was to investigate the effects in-package dielectric barrier discharge (DBD) atmospheric cold plasma (CP) on meat color, microbiological quality and safety chicken breast (pectoralis major). Raw broiler collected from a local commercial plant. Noninoculated samples inoculated with Campylobacter Salmonella were packed in polymeric trays air. packaged CP-treated at 70 kV for different times (0, 60, 180, or 300 sec) stored 4°C 5 days. Microbial counts (psychrophiles,...
A hyperspectral imaging system including a camera with prismgratingprism spectrograph, fiber optic linelighting, motorized lens control, and imageprocessing software was developed for poultry safety inspection,particularly identification of fecal ingesta contamination on carcasses. Both spectral spatial image databetween 400 900 nm 512 bands were acquired from contaminated Fourdominant wavelengths (434, 517, 565, 628 nm) selected by principal component analysis...
Citrus Huanglongbing (HLB, also known as citrus greening disease) was discovered in Florida 2005 and is spreading rapidly amongst the growing regions of state. Detection via visual symptoms disease not a long-term viable option. New techniques are being developed to test for its earlier presymptomatic stages. Fourier transform infrared-attenuated total reflection (FT-IR-ATR) spectroscopy candidate rapid, inexpensive, early detection disease. The mid-infrared region spectrum reveals dramatic...
To study effects of treatment voltage and time in-package atmospheric cold plasmas (ACP) on quality raw chicken meat.Meat was packed in trays air, treated with ACP stored at 4°C for 24 h or 3 days. Increasing from 55 to 80 kV caused increasing O3 inside packages, but had no microbes, colour pH after storage 4°C. There were differences , lightness between times 3, 6 9 min 3-day storage. However, microbial populations ACP-treated meat lower than untreated control. Treatments >3 reduced redness...
A brief history of cereal grain moisture measurement by sensing the electrical properties is presented. The basic principles are also described for using radio-frequency (RF) and microwave dielectric properties, or permittivity, through their correlation with content. development density-independent functions permittivity explained. findings recent research summarized, which indicate that reliable content determinations can be realized measurements on at RF frequencies. Development these...
Procedures are described for microwave permittivity measurements taken on 23 kinds of common fresh fruits and vegetables with an open-ended coaxial-line probe used in conjunction a network analyzer. Plots the dielectric constant loss factor at 41 frequencies between 200 MHz 20 GHz illustrated apple, lemon, carrot, cucumber, avocado, condensed data all, along moisture content, tissue density, total soluble solids, tabulated six covering same range. Although specific values differ, decreases...
Permittivities, moisture contents, tissue densities, and total soluble solids data were determined for samples of twenty-three kinds fresh fruits vegetables at 23 degrees C. Permittivities measured 41 frequencies between 200 MHz 20 GHz with an open-ended coaxial-line probe a microwave network analyzer. Results the permittivity measurements are presented graphically, dielectric constant loss factor values six across range tabulated along sample descriptions moisture, density, data. Although...
<abstract><title><italic>Abstract.</italic></title> An acousto-optic tunable filter (AOTF)-based hyperspectral microscope imaging (HMI) method has potential for rapid identification of foodborne pathogenic bacteria from micro-colonies with a cell level. In this study, we successfully developed to acquire quality microscopic images various gram-negative and gram-positive live cells. Among the contiguous spectral visible/NIR region between 450 800 nm, scattering intensity was distinct at...
A method and system for detecting faecal ingesta contaminants on poultry carcasses were demonstrated. visible/near infrared monochromator, which measured reflectance principal component analysis first used to identify key wavelengths from uncontaminated skin samples. Measurements at 434, 517, 565 628 nm identified evaluation with a hyperspectral imaging system. The system, was line-scan (pushbroom) consisted of camera, fibre-optic line lights, computer frame grabber. camera high-resolution...
A hyperspectral microscope imaging (HMI) method, which provides both spatial and spectral information of bacterial cells, was developed for foodborne pathogen detection. The AOTF-based system can be effective characterizing properties biofilms formed by Salmonella enteritidis as well Escherichia coli. intensity images the pattern distribution spectra varied with parameters (integration time gain) HMI system. Preliminary results demonstrated that determination optimum parameter values...