Tryptone Agar Medium - BioReagent

Cat. No.: T1528606

등급 & 순도 BioReagent

Storage

Room temperature

Shipped In

Normal

개요

For Brucella spp. testing.

사양

사양 및 순도

BioReagent

보관 조건

Room temperature

배송

Normal

등급

BioReagent

Product Line

생물 제품

Application Protocols

The following are general, literature-based protocols for dehydrated tryptone-agar media. Item-specific instructions (g/L, pH) are Not specified for this item; refer to CoA/Spec Sheet.

A. Preparation of agar plates (general):

• Weigh dehydrated medium per the manufacturer’s recommended g/L into a heat-resistant flask.
• Add appropriate volume of high-purity water. Swirl to disperse.
• Heat with stirring to dissolve. Boil gently until clear.
• Autoclave at 121 °C for 15–20 min. Cool to 50–55 °C.
• Aseptically add sterile-filtered supplements (e.g., antibiotics) as needed; mix gently.
• Pour 20–25 mL per 90-mm sterile Petri dish. Let solidify; dry if necessary. Store inverted.

B. Soft agar for phage overlays (general):

• Prepare at reduced agar content (literature: often 0.5–0.7% w/v). Keep molten at 45–50 °C.
• Mix with host bacteria and phage inoculum; overlay onto a pre-warmed base agar plate.

C. Broth preparation (no agar):

• Omit agar (or use a broth counterpart) at the recommended g/L. Sterilize by autoclave or filter if heat-labile supplements dominate.

Quality checks:

• Perform growth-promotion testing with control strains.
• Inspect for clarity, color, and gel firmness; discard if contaminated or excessively browned.

Biological Roles

General biological function of Tryptone Agar Medium components (literature/general):

• Tryptone (enzymatic digest of casein): Provides peptides, free amino acids, and small growth factors. Supplies a readily assimilable nitrogen and carbon source for many heterotrophic bacteria by leveraging peptide transport systems and intracellular proteolysis.
• Agar (polysaccharide from red algae): Forms a thermo-reversible gel that is largely inert to most bacteria (few species hydrolyze agar). It creates a semi-solid matrix that spatially separates cells, enabling clonal colony formation and phenotypic observation.
• Mineral content (if present via supplements): Supports osmotic balance and enzymatic function; exact mineral content for this item is Not specified for this item; refer to CoA/Spec Sheet.

Use contexts:

• Isolation and maintenance of laboratory strains.
• Enumeration and selection when combined with antibiotics, inducers, dyes, or selective agents appropriate to the organism.

Notes:

• The medium itself has no therapeutic function and is solely for cultivating microorganisms under laboratory conditions.
• Growth performance depends on organism physiology, inoculum, incubation conditions (temperature, aeration, humidity), and any added selective/supplemental agents.

Item-specific composition, target pH, and performance specifications are Not specified for this item; refer to CoA/Spec Sheet.

Buffer Applications

This product is a nutrient medium and gelling matrix, not a buffering reagent. It typically relies on the intrinsic buffering capacity of its components or added buffers in specific formulations.

• If controlled pH is required, prepare the medium with a suitable buffer system (e.g., phosphate or HEPES) appropriate for the organism and experiment (literature/general). The choice of buffer, concentration, and resultant pH range should be validated empirically for your application.

Item-specific buffer composition, pH targets, and buffering capacity are Not specified for this item; refer to CoA/Spec Sheet.

Green Alternatives

While Tryptone Agar Medium is generally low hazard and water-based, sustainability considerations can still be optimized (general guidance):

• Renewable components: Agar is derived from red algae and is biodegradable; aqueous preparation avoids volatile organic solvents.
• Energy use: Autoclaving is energy-intensive. Consolidate sterilization cycles and use validated, minimal volumes to reduce energy consumption.
• Waste minimization: Prepare only the volume needed. Use reclosable, reusable glass bottles for media preparation and storage.
• Alternative gelling agents: Gellan gum can reduce resource pressure on agar stocks; however, it changes gel properties and may affect organism performance (tradeoff: tuneable gel strength vs. different nutrient/gelling interactions).
• Ready-to-use plates vs. in-house pouring: Commercial pre-poured plates reduce on-site energy and water use but increase shipping footprint and packaging waste; choose based on throughput and local logistics.
• Decontamination: Prefer steam sterilization (autoclave) over chemical disinfectants where feasible; if chemical disinfectants are required, select less hazardous options compatible with your organisms and local regulations.

Summary table (general):

• Agar (this item): Renewable, water-based; requires autoclaving; minimal chemical hazard.
• Gellan gum: Synthetic/biotechnological; precise gel control; different performance profile.
• Pre-poured plates: Convenience, consistent QC; more packaging/shipping impact.

Pharmaceutical Uses

No therapeutic or clinical use is intended. For research use only.

Relevant roles in pharmaceutical and biomanufacturing laboratories (literature/general):

• Microbiological environmental monitoring and routine microbiology: Solid media for culturing nonfastidious organisms during in-process controls and facility monitoring (when appropriate supplements are added and validated in-house).
• Raw material in QC microbiology: Used to grow compendial test organisms for method suitability, colony isolation, and enumeration tests, following pharmacopeial or internal SOPs where applicable.
• Strain maintenance: Preservation and propagation of production-relevant microbial strains under controlled conditions.

Regulatory notes:

• This listing does not claim compliance with specific pharmacopeial monographs (e.g., USP/EP) or growth-promotion criteria. Any such conformity, if applicable, is Not specified for this item; refer to CoA/Spec Sheet.
• Endotoxin/bioburden limits, if required for GMP use, must be established by the user or confirmed via vendor documentation.

Storage/handling for regulated environments should follow site SOPs and the product SDS.

Physical Properties

Item-specific physicochemical specifications are not provided for this catalog entry.

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• pH (medium solution): Not specified for this item; refer to CoA/Spec Sheet.
• Solubility: Dispersible in water with heating (literature, general for dehydrated agar media). Insoluble in most organic solvents.
• Melting/gelation (agar component, literature):
  • Melting temperature typically ~85–95 °C (varies with concentration and agar source).
  • Gelation on cooling typically ~35–45 °C at common use concentrations (literature, general).
• Density/bulk density (powder): Not specified for this item; refer to CoA/Spec Sheet.
• Refractive index, logP, pKa, UV cutoff: Not applicable/Not specified for this item; refer to CoA/Spec Sheet.

Practical handling properties (literature/generic guidance):

• Requires vigorous heating and/or autoclaving in water to fully dissolve agar and clarify the solution before pouring plates.
• Forms a firm, hydrated gel at typical agar percentages used for microbiology; gel strength depends on agar content and source.

Important: Exact preparation concentration (g/L), final pH at 25 °C, and gel strength for this specific item are Not specified for this item; refer to CoA/Spec Sheet.

Quality and Grades

• Grade: BioReagent (as provided). This designation indicates suitability for general biological and microbiological laboratory use, with manufacturing controls aimed at consistency in performance (e.g., growth promotion), rather than analytical trace-metal specifications.

What BioReagent typically implies (general):

• Manufactured to support biological workflows such as microbial cultivation, cloning, and routine QC where reproducible growth characteristics are critical.
• May undergo performance testing (e.g., growth of representative strains), though item-specific growth-promotion test organisms/criteria are Not specified for this item; refer to CoA/Spec Sheet.
• Not intended as an analytical reference standard; impurity cutoffs (metals, UV, residuals) are generally not defined the way they are for analytical grades.

Stabilizers/additives:

• None stated. Any stabilizers or supplements are Not specified for this item; refer to CoA/Spec Sheet.

Lot-to-lot consistency:

• For complex media, enzyme-digest sources and agar quality can affect gel strength and growth performance. The BioReagent designation typically reflects controls to minimize such variation.

Documentation:

• For exact composition, recommended concentration (g/L), target pH, growth-promotion data, and microbiological limits: Not specified for this item; refer to CoA/Spec Sheet.

Reaction and Applications

This product is intended for microbiological culture rather than chemical synthesis. Key laboratory applications (literature/general):

• General-purpose cultivation: Supports growth of a wide range of nonfastidious bacteria on solid media for colony isolation, morphological assessment, and enumeration.
• Recombinant workflows: Common base for plating engineered strains (e.g., E. coli) with appropriate antibiotics or inducers added post-sterilization.
• Phage assays: When prepared as soft agar (reduced agar concentration), used for top-agar overlays in bacteriophage plaque assays.
• Motility and selection tests: Adjusted agar concentrations can be used for motility assessment; selective agents can be incorporated as needed.

Practical tips (literature):

• Dissolution and sterilization: Heat with stirring to fully dissolve; autoclave at 121 °C for 15–20 min. Cool to ~50–55 °C before adding heat-labile supplements and pouring plates to minimize condensation and preserve activity.
• Aseptic technique: Work near a flame or in a biosafety cabinet. Pre-warm plates if reducing condensation is critical.
• Supplementation: Sterile-filter antibiotic stocks; add to hand-warm sterile medium with gentle mixing.
• Quality checks: Perform growth-promotion testing with representative strains in your lab context to confirm lot suitability.

Item-specific composition and recommended preparation concentration are Not specified for this item; refer to CoA/Spec Sheet.

Reaction Conditions

This section is interpreted as preparation and use conditions for the medium (literature/general). Item-specific instructions are Not specified for this item; refer to CoA/Spec Sheet.

Typical preparation workflow (general):

• Reconstitution: Suspend the dehydrated medium in high-purity water at the manufacturer-recommended grams per liter (g/L) for plate or broth use. Stir while heating to boiling until the solution is clear.
• Sterilization: Autoclave at 121 °C for 15–20 minutes (gravity displacement or pre-vacuum as per equipment). Avoid over-sterilization to limit Maillard browning.
• Post-sterilization handling: Cool to ~50–55 °C before adding heat-labile supplements (antibiotics, inducers). Mix gently to avoid bubble formation.
• Plate pouring: Pour into sterile Petri dishes (typically 20–25 mL per 90-mm plate) in an aseptic area. Allow to solidify at room temperature with lids ajar to minimize condensation, then store inverted at 2–8 °C if needed.
• Soft agar overlays: Prepare at reduced agar percentage for plaque assays; maintain at 45–50 °C in a water bath to remain molten before use.

Performance considerations:

• Incubation temperature and atmosphere should match organism requirements.
• Verify growth promotion with control strains when qualifying a new lot.

Exact g/L, target pH, and gel strength for this item are Not specified for this item; refer to CoA/Spec Sheet.

Safety and Handling

GHS classification and hazard statements are not provided for this listing; consult the product SDS for authoritative information.

• Signal word, pictograms, H-statements: Not specified for this item; refer to SDS.
• General hazard profile (literature/practice for dehydrated culture media):
  • Low acute toxicity expected; treat as laboratory chemical. Avoid inhalation of dust; may cause mechanical irritation to eyes/respiratory tract.
  • Not for human or animal therapeutic use. For research use only.
• PPE: Lab coat, gloves (nitrile), safety glasses. Use dust control measures when weighing. Work in a clean area to maintain microbiological quality.
• Handling: Minimize dust generation. Prepare under aseptic conditions when sterility is required. Hot solutions can cause burns—use heat-resistant gloves.
• Incompatibilities: Strong oxidizers and strong acids/bases may degrade organic components. Avoid microbial contamination of stock containers.
• Sterilization: Typical autoclave cycle 121 °C, 15–20 min (literature). Do not autoclave sealed bottles filled to the brim; leave headspace and vent caps slightly until cool enough to tighten.
• First aid (general):
  • Inhalation: Move to fresh air; seek medical attention if symptoms persist.
  • Eye contact: Rinse cautiously with water for several minutes; remove contact lenses.
  • Skin contact: Wash with soap and water.
  • Ingestion: Rinse mouth; seek medical advice if unwell.

Always defer to the SDS for definitive safety guidance.

Solvent Selection

This product is a dehydrated microbiological medium, not a solvent. Solvent selection focuses on dissolution for preparation.

• Primary solvent: High-purity water (e.g., ASTM Type 1 or 2, or sterile distilled/RO water). Avoid organic solvents; agar requires water to hydrate and gel (literature).
• Water quality considerations (general):
  • Low ionic content minimizes precipitation with phosphate or other salts if present in supplemented recipes.
  • Microbiological quality is critical—sterile technique or subsequent sterilization by autoclave/filtration is required depending on workflow.
• Miscibility: The prepared medium is an aqueous system. Post-sterilization supplements (antibiotics, inducers) should be added in sterile, water-miscible concentrates and are typically filter-sterilized.
• When to choose water-only dissolution:
  • For plate pouring and routine bacterial culture where agar gelation and nutrient availability are essential.

Comparison (literature/generic):

• Water vs. buffered water: Buffers may be added when a controlled pH is required; however, buffering agents and their concentrations are application-dependent and are Not specified for this item; refer to CoA/Spec Sheet.

Note: Specific reconstitution concentration (g/L) and any buffer recommendations for this item are Not specified for this item; refer to CoA/Spec Sheet.

Storage and Reconstitution

• Storage conditions (as provided): Room temperature. Protect from moisture and microbial contamination. Keep container tightly closed.
• Shipping: Normal (as provided).
• Shelf life: Not specified for this item; refer to CoA/Spec Sheet.

Reconstitution (general, literature-based):

• Use high-purity water. Disperse the dehydrated medium at the manufacturer-recommended grams per liter (g/L) for your application (plates, soft agar, or broth).
• Heat with stirring until fully dissolved; autoclave at 121 °C for 15–20 min unless alternate sterilization is specified by your protocol.
• Cool to ~50–55 °C before adding heat-labile supplements. Avoid repeated melt/solidify cycles beyond necessity, as gel strength and nutrient quality can degrade.

Aliquoting and storage of prepared media (general):

• Plates: Store inverted in sealed bags or wrapped to minimize desiccation; typical practice is 2–8 °C. Monitor for drying or contamination.
• Bottled media: Store at 2–8 °C. Re-melt in a boiling-water bath or 95–100 °C heating block with gentle mixing. Do not overheat.

Notes:

• Exact reconstitution concentration, target pH, and acceptable hold times are Not specified for this item; refer to CoA/Spec Sheet.
• For research use only.

Structure and Identity

Tryptone Agar Medium is a complex, undefined microbiological growth medium formulated from enzymatic digests (e.g., tryptone/peptones) and a polysaccharide gelling agent (agar). As a composite preparation, it does not have a single molecular structure.

• SKU: T1528606 (Aladdin Scientific)
• Product type: Complex, dehydrated culture medium (mixture)
• Molecular formula: Not applicable to mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• Molecular weight: Not applicable to mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• SMILES/InChI/InChIKey/CID/CAS: Not applicable to mixtures; Not specified for this item; refer to CoA/Spec Sheet.

Structural features (general, literature):

• Contains short peptides, amino acids, and nutrients derived from tryptone (pancreatic digest of casein), supplying nitrogen, carbon, and growth factors for heterotrophic microbes.
• Agar is a linear polysaccharide (primarily agarose/agaropectin) that melts at elevated temperature and gels on cooling, providing a hydrated, inert matrix for colony isolation.
• No defined stereochemistry or discrete ring system can be assigned to the mixture as a whole.

2D description in words (general):

• Nutrient components (tryptone) are water-soluble, low-MW peptide fragments and free amino acids.
• Agar consists of repeating galactose-based units forming long chains that entangle to yield a thermo-reversible gel in water.

Note: Composition percentages, pH set point, and any supplements are Not specified for this item; refer to CoA/Spec Sheet.

Synthetic Utility

Not a reagent for organic synthesis. As a complex culture medium, Tryptone Agar Medium has no direct role in chemical transformations, catalysis, or retrosynthetic planning.

Where it is relevant to chemical laboratories (general):

• Microbial biocatalysis platforms: Solid media can be used to isolate and maintain engineered strains that express enzymes for subsequent biotransformations in separate aqueous or biphasic systems.
• Screening: Colony-based screening (e.g., colorimetric or fluorogenic reporters, antibiotic selection) enables rapid identification of clones prior to liquid-phase expression or bioconversion studies.

Item-specific chemical reactivity or transformation parameters do not apply.

Target Specificity

Not applicable. This product is not an antibody, probe, or targeted binding reagent. It is a general-purpose microbiological medium for cultivation.

Any organism-specific selectivity would arise only from supplements or selective agents added by the user, which are Not specified for this item; refer to CoA/Spec Sheet.

자주 묻는 질문

How should this product be stored?

Store at room temperature.