How does pickling stop spoilage?

Pickling stops spoilage primarily through the use of acidic solutions, typically vinegar or brine, which create an environment unfavorable for the growth of spoilage-causing microorganisms. The high acidity lowers the pH, inhibiting the growth of bacteria, yeasts, and molds. Additionally, the salt in brine draws out moisture, further limiting microbial activity. Together, these factors help preserve the food and extend its shelf life.