Determinants of wheat antigen and fungal alpha-amylase exposure in bakeries.
The study's objectives were to measure flour antigen exposure in bakeries and define the determinants of exposure.
Ninety-six bakery workers, employed in seven different bakeries, participated in the study.
Two side-by-side full-shift inhalable dust samples were obtained from each study participant on a single occasion.
The flour antigen exposure was measured as wheat antigen and fungal alpha-amylase content of the water-soluble fraction of inhalable dust, assayed via enzyme-linked immunosorbent assays.
During the entire sampling period bakers were observed and information on 14 different tasks was recorded at 15-minute intervals.
Other production characteristics were also recorded for each sampling day and used in statistical modeling to identify significant predictors of exposure.
The mean alpha-amylase antigen exposure was 22.0 ng/m3 (ranging from below the limit of detection of 0.1 ng/m3 to 307.1 ng/m3) and the mean wheat antigen exposure was 109 mug/m3 (ranging from below the limit of detection of 1 mug/m3 to 1018 mug/m3).
Regression models that explained 74% of variability in wheat antigen and alpha-amylase antigen exposures were constructed.
The models indicated that tasks such as weighing, pouring, and operating dough-brakers increased flour antigen exposure, while packing and decorating resulted in lower exposures. (...)
Mots-clés Pascal : Boulangerie, Exposition professionnelle, Médecine travail, Farine céréale, Amylase, Enzyme, Farine blé, Poussière, Inhalation, Homme, Teneur air ambiant, Poste travail, Activité professionnelle, Mesure, Lieu travail, Fungi, Thallophyta, Antigène, Prévention
Mots-clés Pascal anglais : Bakery, Occupational exposure, Occupational medicine, Cereal flour, Amylase, Enzyme, Wheat flour, Dust, Inhalation, Human, Ambient air concentration, Workplace layout, Professional activity, Measurement, Work place, Fungi, Thallophyta, Antigen, Prevention
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0348073
Code Inist : 002B03L03. Création : 27/11/1998.