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When spoilage of canned foods occurs what causes the blackening of the cans?
Kristyland96
The spoilage is caused by bacterial growth in the can. The bacteria liberate hydrogen sulfide (H2S) from the sulfur-containing amino acids. When H2S is produced, the sulfide (S2-) reacts with the metal to produce a visible black presipitate.
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∙ 16y ago
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