What does Veillonella convert lactate into?

What does Veillonella convert lactate into?

• A. Lactic acid
• B. Propionate
• C. Methane
• D. Propionate, acetate, CO2, H2

Answer: (D)

Veillonella specializes in using lactate as its energy source and converts it into short-chain fatty acids rather than continuing to acidify the environment. Through a lactate-fermenting pathway, often described as the methylmalonyl-CoA route, lactate is transformed primarily into propionate and acetate, with carbon dioxide and hydrogen gas released as byproducts. This makes Veillonella a key player in oral biofilms, because it can take the lactate produced by other bacteria (like streptococci) and turn it into less acidic end products, helping regulate pH in the community. Methane isn’t a product of Veillonella metabolism, and Veillonella does not produce lactic acid; its hallmark is converting lactate into propionate and acetate along with CO2 and H2.

Veillonella specializes in using lactate as its energy source and converts it into short-chain fatty acids rather than continuing to acidify the environment. Through a lactate-fermenting pathway, often described as the methylmalonyl-CoA route, lactate is transformed primarily into propionate and acetate, with carbon dioxide and hydrogen gas released as byproducts. This makes Veillonella a key player in oral biofilms, because it can take the lactate produced by other bacteria (like streptococci) and turn it into less acidic end products, helping regulate pH in the community. Methane isn’t a product of Veillonella metabolism, and Veillonella does not produce lactic acid; its hallmark is converting lactate into propionate and acetate along with CO2 and H2.