Compositions – Reductive bleachant – deoxidant – reductant – or generative – Deoxidant or oxygen scavenging
Patent
1997-03-25
1999-06-22
Anthony, Joseph D.
Compositions
Reductive bleachant, deoxidant, reductant, or generative
Deoxidant or oxygen scavenging
4352841, 435404, 435809, 435801, 435325, C09K 1502, C09K 1506, C09K 1534, C12M 300
Patent
active
059140704
ABSTRACT:
A gas concentration adjusting agent which allows a low oxygen concentration environment, such as an ischemic environment for tests of cultured cell damage caused by low oxygen or the like, to be conveniently created, as well as a method and a system for adjusting gas concentrations using this easily handled agent, are provided. During the culture of cultured cells under low oxygen-ischemic culture conditions in a sealed container, the gas concentration adjusting agent consisting of water, a carbon dioxide absorbent, and an ascorbic acid-based, carbon dioxide-generating type of oxygen-absorbing composition is sealed inside the sealed container, so as to adjust the oxygen concentration in the culture environment to no more than 1% and the carbon dioxide concentration to between 3 and 7%.
REFERENCES:
patent: 4384972 (1983-05-01), Nakamura et al.
patent: 5180518 (1993-01-01), Sugihara et al.
patent: 5458875 (1995-10-01), Casas-Perez et al.
patent: 5476780 (1995-12-01), Watanabe
Araki Hisaya
Harima Yoshihiko
Kamiya Tomoo
Kwon A-Hon
Anthony Joseph D.
Cole Thomas W.
Mitsubishi Gas Chemical Company Inc.
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