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Oxygen Absorption Properties of Powdered Iron
Author(s) -
KLEIN TORSTEN,
KNORR DIETRICH
Publication year - 1990
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1990.tb05254.x
Subject(s) - scavenger , oxygen , chemistry , relative humidity , scavenging , humidity , polyethylene , particle size , absorption (acoustics) , nuclear chemistry , materials science , biochemistry , radical , organic chemistry , physics , composite material , thermodynamics , antioxidant
Powdered iron with a particle size < 10 μm was used as the basic oxygen scavenging system in air‐filled glass containers. The scavenger was tested unpackaged or sealed in polyethylene pouches. Scavenger concentration and packaging system affected rates of oxygen removal. Relative humidity markedly influenced the effectiveness of the oxygen scavenger system. At 98% RH, oxygen concentration in air‐filled containers reached 1.6% after 21 hr, while one‐half of the oxygen remained at 65% RH. Overall, the data suggest =1 to 1.5% oxygen removed per hour at 22 ± 2°C depending on the RH values of the system.