Evaluation of flavorings-related lung disease risk at six microwave popcorn plants.
OBJECTIVE
After investigating fixed airways obstruction in butter flavoring-exposed workers at a microwave popcorn plant, we sought to further characterize lung disease risk from airborne butter-flavoring chemicals.


METHODS
We analyzed data from medical and environmental surveys at six microwave popcorn plants (including the index plant).


RESULTS
Respiratory symptom and airways obstruction prevalences were higher in oil and flavorings mixers with longer work histories and in packaging-area workers near nonisolated tanks of oil and flavorings. Workers were affected at five plants, one with mixing-area exposure to diacetyl (a butter-flavoring chemical with known respiratory toxicity potential) as low as 0.02 ppm.


CONCLUSIONS
Microwave popcorn workers at many plants are at risk for flavoring-related lung disease. Peak exposures may be hazardous even when ventilation maintains low average exposures. Respiratory protection and engineering controls are necessary to protect workers.
Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, 1095 Willowdale Road, Morgantown, WV 26505, USA. rkanwal@cdc.gov
Richard
R
Kanwal
Greg
G
Kullman
Chris
C
Piacitelli
Randy
R
Boylstein
Nancy
N
Sahakian
Stephen
S
Martin
Kathleen
K
Fedan
Kathleen
K
Kreiss
D000293:Adolescent; D000328:Adult; D000368:Aged; D000395:Air Pollutants, Occupational / Q000009:adverse effects / Q000032:analysis*; D003430:Cross-Sectional Studies; D003931:Diacetyl / Q000009:adverse effects / Q000032:analysis*; D005260:Female; D005525:Food-Processing Industry; D006306:Health Surveys; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000139:chemically induced / Q000453:epidemiology / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects / Q000032:analysis* / Q000517:prevention & control; D009790:Occupations; D015995:Prevalence; D018570:Risk Assessment; D014481:United States
D000395:Air Pollutants, Occupational; D003931:Diacetyl