The selective culture medium in microbiology refers to the medium designed according to the special nutritional requirements of a certain (type) microorganism or the resistance to certain special chem...
1. Is it good to keep liquid culture medium under refrigeration? Is it better to freeze?Refrigeration is better. Because when the liquid medium is frozen and then melted, the PH value of the solution ...
Natural culture medium is also called complex medium, which is a natural organic substance that contains unclear or inconsistent chemical composition. The natural culture medium is mainly extracted fr...
E. coli tests microbiology is a subject that studies Escherichia coli. Escherichia coli, also called E. coli, was discovered by Escherichi in 1885.Escherichia coli is a normal invador in the intestine...
After registrating the number, the environmental soil sampling retrieved from the field need to go through a preparation process: air-drying, grinding, sieving, mixing and bottling to prepare for vari...
Cosmetic microbiology is a science that studies the characteristics, properties, physiological characteristics, growth rules of microbes in cosmetics and how to prevent microbes from polluting cosmeti...
Environmental sanitation, according to the interpretation of the famous international charity organization International Junyou club, refers to the control of all factors that hinder or affect health ...
Due to the different nutrition needed, there are many types of medium. It is estimated that there are thousands of different medium at present, which can be divided into several types according to the...
1. What is microbiological testing?Food microbiological testing refers to the determination of the quantity or the existence of a certain type of microorganism in a unit sample according to certain te...
1. Basic requirements of microbiological test laboratory The basic requirements of microbiological test laboratory are as follows:① The food microbiology exam laboratory requires a good surrounding ...
1. The scope of microbiological testing of food samplesThe scope of food microbiological testing includes the following aspects: ① The testing of the production environment, including workshop water,...
Most cells are suitable for growth in the pH range of 7.2-7.4, but different kinds of cells have different requirements for pH value, and the optimal pH value of the same cell at different growth stag...
As one of the most common experiments in microbial experiments, colony counting is an effective method to count the number of bacteria in articles. It is widely used to test the number of bacteria in ...
Food safety test is based on national indicators to detect harmful substances in food, mainly including some harmful and toxic indicators, such as heavy metals, aflatoxin. An important aspect of food ...