Question

Which of the following component is a common nitrogen source in fermentation media?

• A. Glucose
• B. Peptone
• C. Phosphate
• D. Ethanol

Hint:

• Microorganisms need Macronutrients (C, H, O, N, P, S, K, Mg, Ca, Fe) and Micronutrients.
• Nitrogen sources} can be organic (e.g., amino acids, peptides from peptone, yeast extract) or inorganic (e.g., ammonium salts, nitrates).
• Peptone and yeast extract are complex nitrogen sources providing amino acids and other growth factors.

Answer 1

The Correct Option is B

In the context of fermentation media, a nitrogen source is essential for the growth and metabolism of microorganisms. Among the options provided:

• Glucose: This is a common carbon source, not a nitrogen source.
• Peptone: This is a common nitrogen source in fermentation media. Peptone is derived from animal proteins and provides amino acids, peptides, and proteins needed for microbial growth.
• Phosphate: Typically serves as a phosphorus source, important for energy transfer and nucleic acid synthesis.
• Ethanol: Utilized as a carbon source in some fermentations, but not a nitrogen source.

Thus, the correct answer is Peptone, as it supplies the necessary nitrogen to support microbial activity in fermentation processes.