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“They are replacing propionate with bacteria that produce propionic acid,” she said.

Clostridia bacterial pathogens, for instance, generate propionic acid in the gut — a short-chain fatty acid known to disrupt the production of neurotransmitters.

Vinegar will replace propionic acid, a preservative in its turkey. Banana peppers will be given their fluorescent sheen with turmeric, often used in Indian curries, instead of Yellow No. 5.

Some of the changes will include using banana peppers that are colored with turmeric instead of Yellow No. 5 and using turkey that includes with vinegar rather than the preservative propionic acid.

She found, first, that when she injected engineered mice with propionic acid, the blood pressure of those in which Olfr78 had been knocked out dropped more than it did in normal mice.