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Microbial Culture Media Raw Materials

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Granulated Culture Media Raw Materials for Microbiology
Powdered Culture Media Raw Materials for Microbiology

Culture media raw materials are the core ingredients used to prepare own culture media formulations. We offer an extensive portfolio of granulated and powdered biological raw materials that include dehydrated raw materials, such as peptones, agar-agar, and extracts, as well as additives. They are available in many varieties to meet a wide range of microbiology applications. Dehydrated raw materials available in granulated format facilitate safe handling and optimal performance. Granulated raw materials produce less dust contamination of the laboratory environment and dissolve quickly to ensure optimal flow properties. All our raw materials combine handling safety and optimal performance. Our strict quality control and assurance standards are the basis for their production.

Related Resources

Article: Vegetable and Plant Peptones
Article: Base Ingredients of Microbiology Media
Article: Microbiology Theory - Media Preparation
Article: Viable but Nonculturable Bacteria

Peptones and Extracts

Peptones are a mixture of water-soluble polypeptides, peptides, amino acids, and other substances remaining after protein material digestion. Peptone quality is determined by selected raw material quality, digestion, or hydrolyzation parameters. Extracts are natural, dried, and purified extracts from yeast, plants, and animal-derived material, often used as a source of proteins, sugars, and essential grow factors. Raw materials must be stored to prevent spoilage organism growth. A variety of peptones and extracts are available for our customers that are made from selected quality materials and are suitable for a wide range of microbiological applications. For ethical and environmental reasons, we provide also one of the largest selections of plant peptones and extracts.

Agar-agar

Agar-agar is used to prepare solid, agar-based culture media and is the cell wall polysaccharide that structures the cellular cohesion of seaweed. The ideal agar-agar for microbiological use is free of impurities, heat-resistant bacteria, and any substances that inhibit microorganism growth. The red algae genera containing agar-agar include Gelidium, Gracilaria, Petrocladia, and Anpheltia. The agar-agar manufactured from Gelidium sesquipedale ensures the best quality for bacteriological purposes.

Additives

Most selective media require special additives to ensure optimal performance for isolating and identifying specific microorganisms. We provide additional flexibility by offering a wide range of well suited additives, such as antibiotics, selective agents (e.g. bile salts and detergents), glycerol, sugars, buffers, salts, and growth factors. Culture media preparation or the addition of additives is time-consuming and a possible source of contamination. For your convenience, we also offer a wide range of both granulated and powdered culture media ready for media preparation.

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A microbial culture medium promotes and supports the growth and the survival of microorganisms. It can be prepared as a liquid broth, solid agar plate or as semi-solid deeps. We offer a broad range of dehydrated and ready-to-use culture media that fulfils the highest industry standards and regulatory requirements.
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Culture media provides essential nutrients for the cultivation of microbes. They also contain inhibitors for selective growth of specific microorganisms.
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Highlights
Microbiology Introduction
Introduction to Microbiology Theory. An initial aim of all microbiologists is the reproducible growth of their microbial cultures, no matter whether the microorganisms are of natural origin or have been genetically engineered by man.
Microbiology Theory: Media Preparation
Microorganisms need nutrients, a source of energy and certain environmental conditions in order to grow and reproduce. In the environment, microbes have adapted to the habitats most suitable for their needs, in the laboratory, however, these requirements must be met by a culture medium.
EN ISO 11133:2014 Quality-assured Culture Media for Food and Water Testing to Enhance Consumer Safety
EN ISO 11133:2014 - Mandatory standard for media preparation, production, storage and performance testing. In May 2014, the International Organization for Standardization (ISO) published the revised EN ISO 11133, which is now a full standard and as such, mandatory for all accredited laboratories that perform microbiological testing of food, animal feed or water using culture media.
EN ISO 11133 and Water for the Preparation and Performance Testing of Microbiological Culture Media
See how two water sources compare when preparing and performance testing microbiological culture media acc. to EN ISO 11133: centrally purified water vs. water from a Milli-Q® IX system were assessed. Tests included media specific for Listeria and Salmonella pathogens.
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