kasvuväline

Kasvuväline, often translated as growth medium or culture medium, is a substance used to support the growth of microorganisms or cells. In microbiology, it typically consists of a gel or liquid containing nutrients, salts, a carbon source, and sometimes agar to solidify it. Different microorganisms require different nutrient compositions for optimal growth, so a variety of specialized kasvuväline formulations exist. For instance, some media are designed to encourage the growth of specific bacteria while inhibiting others, known as selective media. Differential media, on the other hand, are used to distinguish between different types of microorganisms based on their metabolic characteristics, often indicated by color changes within the medium.

In cell culture, kasvuväline refers to a liquid solution that provides cells with the necessary nutrients, growth factors, hormones, and gases for survival and proliferation outside of their original organism. This is crucial for research in areas like biology, medicine, and biotechnology, allowing scientists to study cell behavior, test drugs, and produce biological products. The composition of cell culture media is carefully controlled and often includes amino acids, vitamins, inorganic salts, and glucose. Sterility is paramount in both microbial and cell culture media to prevent contamination by unwanted organisms that could interfere with experiments or compromise cell viability.