In bread preparation, in addition to sorbic acid, which one of the following is used as a preservative? (IFFCO 2022)

✅Explanation:
Wilhelm Knop, a German agricultural chemist, developed one of the earliest and most widely used formulas for a balanced nutrient solution for plant growth in 1865. This solution, known as Knop's solution, provides essential mineral elements in a form that plants can readily absorb.

• Key facts about Knop's solution:
Mineral Composition: It contains essential macronutrients like nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur in specific proportions.
Hydroponics: Knop's solution is often used in hydroponics, a method of growing plants without soil, where the roots are immersed in the nutrient solution.