Columbia Broth - BioReagent

Cat. No.: C1528727

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Panoramica

For cultivation of bacteria

Specifications

Specifiche e purezza

BioReagent

Condizioni di conservazione di stoccaggio

Room temperature

Spedito in

Normal

Grado

BioReagent

Product Line

Prodotti biologici

Application Protocols

General workflow (literature/general guidance; adjust per your SOPs and label instructions):

1. Reconstitution

• Calculate required volume. Add dehydrated medium gradually to high-purity water under stirring until dissolved. Final concentration: Not specified for this item; refer to CoA/Spec Sheet.

2. Sterilization

• Distribute into appropriate vessels (with headspace for boiling). Autoclave at 121 °C for 15 min. Allow to cool.

3. Supplementation (optional)

• When required, aseptically add sterile supplements (e.g., blood, hemin, NAD, antibiotics) after cooling to ~45–50 °C. Mix gently to avoid foam.

4. Inoculation and incubation

• Inoculate with pure culture or test sample. Incubate under organism-appropriate conditions (temperature, atmosphere, agitation). Typical temperatures: 30–37 °C (organism-dependent; literature). Aeration: provide shaking for aerobes; reduce agitation for microaerophiles/anaerobes.

5. Monitoring and downstream use

• Observe turbidity, OD600, or plating CFUs at defined intervals. Subculture to solid media for isolation if needed. For assays, harvest cells at desired growth phase.

Controls and QA

• Include uninoculated sterility controls and positive control strains to verify growth promotion. Record pH after sterilization and before use, if part of your QA program.

Biological Roles

Columbia Broth functions as an ex vivo nutrient environment to support microbial metabolism and proliferation; it has no direct biological role in vivo.

Functional components (literature/general knowledge):

• Peptones/enzymatic digests: Provide peptides, amino acids, and small organics that feed central metabolism (glycolysis, TCA cycle) and biosynthesis.
• Yeast/meat extracts: Supply vitamins (e.g., B-complex), nucleotides, and growth factors that enhance growth of fastidious organisms.
• Electrolytes (e.g., sodium ions): Support osmotic balance and transport processes.
• Optional supplements (added by user): Blood, hemin, NAD, or selective agents can modulate growth to support or differentiate target taxa.

Use context:

• Supports robust biomass accumulation for downstream analyses such as enzyme assays, DNA/RNA extraction, and proteomics, where rich growth conditions improve yield (research use only).
• Because it is nutritionally rich and compositionally complex, it is not suited for experiments requiring defined media or tight metabolic control (e.g., isotope tracing with minimal background). In such cases, choose chemically defined or minimal media.

Buffer Applications

This product is a complex growth medium rather than a dedicated buffer system.

• While Columbia Broth exhibits intrinsic buffering capacity due to amino acids/peptides and any added buffering salts (formulation-dependent; literature), it is not intended for use as a stand-alone pH buffer in biochemical assays.
• For precise pH control in enzymology or analytical workflows, use defined buffer systems (e.g., phosphate, HEPES, MOPS) and, if needed, supplement cultures separately.
• If experiments require maintaining near-neutral pH during bacterial growth, Columbia Broth’s native capacity is typically adequate for moderate biomass densities; however, high-density fermentations may require pH monitoring and control (literature).

Green Alternatives

Green chemistry considerations for culture media focus on resource efficiency, waste minimization, and biosafety rather than solvent substitution.

Options and tradeoffs (literature/general knowledge):

• Energy-efficient sterilization: Use validated fractional sterilization or autoclave load optimization to reduce energy consumption versus multiple small sterilization cycles. Tradeoff: May require rigorous validation to ensure sterility.
• Right-sizing and just-in-time preparation: Prepare only the volumes needed to minimize disposal of expired media. Tradeoff: More frequent preparation may increase labor time.
• Reusable glassware: Where biosafety and QA allow, use reusable flasks and bottles to reduce single-use plastics. Tradeoff: Requires water/energy for washing and validated cleaning protocols.
• Safer disinfectants: Prefer hydrogen peroxide–based or properly diluted bleach solutions with appropriate contact times to reduce environmental impact from quaternary ammonium compounds. Tradeoff: Material compatibility and shelf-life considerations.
• Waste treatment: Autoclave biological waste prior to disposal to prevent environmental release of viable organisms. Segregate nutrient-rich liquid waste to avoid sewer bioload spikes; follow local regulations.

Because Columbia Broth is already aqueous and free of volatile organic solvents, traditional solvent green substitutions (e.g., 2-MeTHF vs THF) are not applicable.

Pharmaceutical Uses

No therapeutic or clinical diagnostic claims are made for this product. For research use only.

Relevant non-clinical/industrial contexts (literature/general knowledge):

• Microbiology workflows in pharmaceutical, biotechnological, cosmetic, or food QC laboratories may use rich, non-selective broths for strain maintenance, inoculum build-up, or growth promotion controls. Columbia-based media are among the recognized enriched media used to support fastidious organisms in research and method development.
• Note: Specific pharmacopeial methods (e.g., USP/Ph. Eur.) typically designate defined media such as Tryptic Soy Broth (TSB) or Fluid Thioglycollate Medium (FTM) for compendial tests. Use Columbia Broth only where appropriate to your internal SOPs or method validations.
• In process development and upstream research, enriched broths can accelerate cell mass accumulation prior to transfer into defined process media.

Compliance note: Any use in regulated environments requires verification against applicable standards, documented lot qualification, and adherence to validated preparation procedures.

Physical Properties

Item-specific physicochemical specifications have not been provided.

• Appearance: Not specified for this item; refer to CoA/Spec Sheet. (Typical for dehydrated media: free-flowing tan to beige powder; literature)
• Solubility: Freely soluble in purified/deionized water (literature, for preparation of broth).
• pH of prepared medium: Not specified for this item; refer to CoA/Spec Sheet. (Typical Columbia base broths/agar show pH near neutral, approximately 7.2–7.4 at 25 °C after sterilization; literature)
• Density, melting point, boiling point, refractive index, logP, pKa: Not applicable/not defined for complex mixtures; not specified for this item.

Practical notes (literature/general knowledge):

• Dehydrated medium should dissolve readily with moderate stirring. Fine insoluble particulates may remain due to complex peptones; these typically settle or clarify after sterilization.
• Prepared broth is a clear to slightly opalescent solution. Color and clarity can vary slightly with water quality and supplement additions.
• Final osmolarity and buffering capacity are intrinsic to the formulation and typically support robust bacterial growth without additional salts.

Quality and Grades

• Grade/Purity (Product Data): BioReagent.

Interpretation and implications:

• BioReagent grade typically indicates suitability for biological research workflows, with controlled raw materials and processing to support reproducible microbial growth. It does not imply clinical diagnostic use or compliance with pharmacopeial monographs unless explicitly stated elsewhere.
• Lot-to-lot performance for culture media is generally assessed by growth promotion testing (GPT) against defined strains and by pH verification after sterilization (literature). For this specific item, detailed acceptance criteria are not specified; refer to CoA/Spec Sheet.
• Stabilizers/indicators: Not specified for this item; refer to CoA/Spec Sheet. Some Columbia formulations include additives or are designed for supplementation (e.g., blood, antibiotics) depending on application (literature).
• UV cutoff, trace metals, peroxide content, and similar analytical specs: Not specified for this item; refer to CoA/Spec Sheet.

Best practices:

• Verify performance with representative strains relevant to your workflow after initial receipt and upon lot changeover.
• Document reconstitution parameters (water quality, mass per volume, sterilization conditions) to ensure reproducibility across batches.

Reaction and Applications

This product is not a chemical reagent for synthetic transformations. Its primary applications are in microbiology and cell culture of prokaryotes.

Typical applications (literature/general knowledge):

• Cultivation of fastidious bacteria in liquid culture, often as a pre-enrichment step prior to plating on Columbia Blood Agar or other enriched media.
• Growth of staphylococci, streptococci, and other Gram-positive organisms; also supports many Gram-negatives due to rich nutrient profile.
• Supplementation: Can be supplemented with sterile defibrinated blood, hemin, NAD, or antibiotics as required by experimental design. Add heat-labile supplements aseptically after cooling sterilized broth to ~45–50 °C (literature).
• Antimicrobial testing workflows: As a non-selective rich basal medium, it may be used for inoculum preparation or maintenance cultures prior to standardized susceptibility tests (the test medium itself is typically defined by the relevant standard; literature).

Practical tips:

• Ensure complete dissolution before sterilization; moderate heat and stirring aid solubilization.
• Avoid overheating; excessive autoclaving can caramelize sugars and degrade amino acids, reducing performance.
• Validate growth promotion with appropriate control strains when introducing a new lot.

Reaction Conditions

This section is adapted to preparation and use conditions for culture media rather than chemical reaction parameters.

Preparation (literature/general guidance):

• Reconstitution: Weigh the dehydrated medium in a clean vessel and add to high-purity water with stirring until fully dissolved. Avoid inhaling dust.
• Concentration: Not specified for this item; refer to CoA/Spec Sheet or label. (Typical preparations for enriched broths fall in the ~30–50 g/L range, depending on the exact formulation; literature.)
• Sterilization: Autoclave at 121 °C for 15 minutes at 15 psi (standard laboratory sterilization; literature). Do not over-sterilize to prevent nutrient degradation.
• Supplementation: Add heat-labile components (e.g., blood, vitamins, antibiotics) aseptically after the medium cools to ~45–50 °C.
• Storage of prepared medium: Use promptly or store at 2–8 °C protected from light for a short period. Exact hold times are application-dependent; monitor for contamination or precipitation.

Expected performance:

• Growth promotion should be verified with control strains relevant to the organism(s) of interest. Exact growth rates and yields depend on strain, inoculum size, aeration/agitation, and temperature (literature).

Safety and Handling

GHS classification and hazard statements are not provided for this item; defer to the product SDS for authoritative safety information.

General laboratory safety guidance for dehydrated culture media (literature/best practice):

• PPE: Wear lab coat, disposable gloves, and safety glasses. Avoid generating dust and inhalation of particulates during weighing and mixing.
• Hygiene: Wash hands after handling. Do not eat, drink, or smoke in areas where media are handled.
• Incompatibilities: Strong oxidizers and strong acids/bases may degrade medium components. Avoid moisture uptake—store tightly closed.
• Microbiological risk: The dehydrated powder is non-sterile. Once reconstituted/sterilized and inoculated, cultures may contain pathogenic organisms. Handle all cultures and contaminated disposables using appropriate biosafety practices and containment (e.g., BSL-appropriate cabinets, autoclave waste before disposal).
• First aid (overview): If inhaled, move to fresh air; if on skin/eyes, rinse with water; if ingested, rinse mouth. Seek medical attention if symptoms persist. Provide SDS to responders.
• Spill response: Avoid dust. Sweep/vacuum the dry powder with HEPA filtration, or absorb liquid media with inert material. Decontaminate with appropriate disinfectant (e.g., 10% bleach) and/or autoclave.
• Fire safety: Organic content can combust; use water spray, CO2, dry chemical. Combustion may produce irritating fumes.

Solvent Selection

Not a solvent; this is a dehydrated culture medium intended to be reconstituted in water.

Practical guidance (literature/general knowledge):

• Reconstitution solvent: Use high-purity water (e.g., ASTM Type 1 or Type 2 DI/RO) to minimize variability from ions and organics. Avoid chlorinated tap water which may inhibit growth.
• Polarity/miscibility: Fully miscible in water; not intended for use with organic solvents.
• Ionic strength and buffering: Intrinsic to the medium’s formulation; external buffers are generally unnecessary and may alter growth characteristics if added.
• When to choose Columbia Broth vs alternatives: Select Columbia Broth when a nutrient-rich base is desired for fastidious organisms or when using matched Columbia-based agar plates for downstream isolation. For non-fastidious organisms or selective enrichment, consider alternatives such as Tryptic Soy Broth (TSB), Brain Heart Infusion (BHI), or selective/enrichment broths tailored with inhibitors or antibiotics (literature).

Storage and Reconstitution

• Storage conditions (Product Data): Room temperature.
• Shipped in (Product Data): Normal.
• Container: Keep tightly closed in the original packaging. Protect from moisture and humidity to prevent caking and premature degradation.
• Light sensitivity: Store protected from excessive light; many media components are light-stable as powders, but good practice limits photo-oxidation.

Reconstitution guidance (general):

• Water quality: Use freshly produced DI/RO water of appropriate purity.
• Concentration: Not specified for this item; refer to CoA/Spec Sheet or product label for grams per liter.
• Dissolution: Add powder gradually with stirring to avoid clumping. Warm (not boiling) water may aid dissolution.
• Sterilization: Autoclave at 121 °C for 15 minutes unless otherwise directed by your SOP.

Prepared medium storage (general):

• Store finished broth at 2–8 °C, protected from light. Use as soon as practical; prolonged storage may reduce performance. Discard if contamination, precipitation, color change, or pH drift is observed.

Research Use Note: For research use only.

Structure and Identity

This product is a complex microbiological growth medium, not a single defined molecule.

• Product type: Columbia Broth (dehydrated culture medium base)
• Intended use: nutrient-rich medium for cultivation of fastidious and non-fastidious bacteria (research use only)
• Molecular formula: Not applicable to complex mixtures; not specified for this item.
• Molecular weight: Not applicable to complex mixtures; not specified for this item.
• SMILES / InChI / InChIKey: Not applicable to complex mixtures; not specified for this item.
• Structural features (description): Heterogeneous blend of organic nitrogen sources (enzymatic digests/peptones), vitamin and growth factor sources (e.g., yeast/meat extracts), electrolytes (e.g., sodium chloride), and buffering constituents depending on formulation (literature). No discrete 2D molecular structure can be assigned.

Notes (literature/general knowledge):

• Columbia media are classically formulated as highly nutritious bases that can be used unsupplemented (broth) or supplemented (e.g., with defibrinated blood for Columbia Blood Agar) to support fastidious organisms such as streptococci and staphylococci.
• Exact constituent identities and proportions vary by manufacturer and lot; consult the item’s CoA/Spec Sheet for composition details if provided.

Synthetic Utility

Not applicable as a chemical reagent. Columbia Broth is not used for organic synthesis or as a building block.

For chemists seeking functionalized reagents or buffers:

• Use dedicated reagents/solvents for chemical transformations.
• For biocatalysis or whole-cell transformations, Columbia Broth may be used to propagate bacterial biocatalysts prior to harvesting cells or preparing resting cell suspensions (literature). In such cases, the medium supports biomass generation rather than participating chemically in the reaction.

Target Specificity

No antigen/antibody target applies. This product is a general-purpose enriched microbiological broth and is non-selective unless supplemented with selective agents.

• Organism support (literature/general knowledge): Broad spectrum, including many fastidious Gram-positive organisms (e.g., streptococci, staphylococci) and numerous Gram-negatives. Actual selectivity is determined by supplements and incubation conditions.
• Item-specific selectivity data: Not specified for this item; refer to CoA/Spec Sheet for any growth promotion testing results.