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Dust entry

Soy-processing dust

Soy material and particulate dust generated during soybean processing, flaking, starch handling, drying, and packaging.

Airborne form

dust

The form describes what is suspended in air at the point of exposure. A material can produce more than one form, such as dust during handling and fume during heating.

Health effects

wheezesinusitisoccupational asthmaasthma-like symptomsairway obstructionwork-related respiratory symptomsallergic sensitization

Evidence

A CDC/NIOSH health-hazard evaluation measured inhalable, thoracic, and respirable dust plus inhalable soy antigen at a soy-processing plant; participating workers had higher-than-expected physician-diagnosed asthma, sinusitis, and wheeze, with higher dust exposures associated with respiratory outcomes.

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Abstract · 1
NIOSH investigators ... measure concentrations of airborne dust ... personal (breathing-zone) air samples for inhalable dust and inhalable soy antigen ... air samples for airborne dust of respirable and thoracic size fractions.

A NIOSH evaluation at a soy-processing plant found some airborne dust concentrations exceeded current occupational exposure standards, and reported higher-than-expected physician-diagnosed asthma, sinusitis, and wheeze among workers; asthma-like symptoms were more common among workers who responded to soy on blood testing.

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page 6 · What NIOSH Found · 1
Some dust concentrations in the air exceeded current occupational exposure standards. Solae workers had a higher than expected prevalence of physician-diagnosed asthma, sinusitis, and wheeze ... Asthma and asthma-like symptoms were more common in workers who responded to soy on the blood test.

The UK HSE feed-mill risk assessment identifies breathing in soya dust as an exposure scenario and states that the dust irritates the respiratory system and may cause asthma.

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Feed mill risk assessment table · 1
Breathing in soya dust from: Dust irritates respiratory system, may cause asthma.

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