Tryptone Yeast Extract Broth - BioReagent

Cat. No.: T1528688

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Descripción general

For cultivation and identification of Streptomyces.

Specifications

Especificaciones y pureza

BioReagent

Condiciones de almacenamiento de almacenamiento

Room temperature

Enviado en

Normal

Grado

BioReagent

Product Line

biological_products

Application Protocols

General microbiology workflow (literature/general guidance):

• Medium preparation

  • Weigh the labeled mass per liter (per product label/CoA).
  • Add to purified water with stirring until fully dissolved.
  • Adjust pH if required by your protocol/specification.
  • Sterilize by autoclaving or sterile filtration as appropriate.

• Culture initiation

  • Inoculate with a fresh colony or standardized inoculum under aseptic conditions.
  • Incubate at an organism-appropriate temperature with agitation for aerobes/facultative anaerobes.

• Monitoring and downstream steps

  • Track growth by OD600; harvest cells at desired phase (e.g., mid-log for transformations or pre-induction for expression).
  • For antibiotic selection, add sterile antibiotic stock to cooled, sterile medium at the desired final concentration just prior to use.
  • For plating applications, prepare an agar-containing version using an appropriate agar concentration; sterilize separately or together per SOP.

• Quality checks

  • Include uninoculated sterility controls for each batch.
  • Perform growth-promotion testing with relevant strains when changing lots or critical parameters.

Item-specific tested applications and recommended conditions are Not specified for this item; refer to CoA/Spec Sheet and your validated SOPs.

Biological Roles

As a complex nutrient broth, this product provides the building blocks and cofactors needed by many microorganisms (literature/general knowledge):

• Nitrogen and carbon sources: Tryptone supplies short peptides and amino acids readily transported and catabolized; residual lactose/peptides from casein digestion can also serve as carbon donors depending on organism.
• Vitamins and growth factors: Yeast extract contributes B-vitamins (e.g., niacin, thiamine, riboflavin), nucleotides, and trace elements that support biosynthetic pathways.
• Buffering/ionic strength: Depending on formulation, salts may contribute to osmotic balance and help maintain pH during rapid growth; verify your lot’s specification.
• Cellular outcomes: In many bacteria, complex media shorten lag phase, enhance maximum specific growth rate (µmax), and increase biomass yield relative to minimal media, often improving expression of recombinant proteins pre-induction.

Use notes:

• Compositional background from peptides and vitamins can influence metabolic profiling, enzyme expression, and selection marker performance; controls are advised when comparing to defined media.
• For sensitive applications (e.g., isotopic labeling, metabolomics), switch to fully defined media to avoid interference from undefined components.

Buffer Applications

This product is not a dedicated buffer system. While the prepared broth may exhibit some inherent buffering capacity from amino acids and salts, it is not intended for precise pH control.

• If stringent pH control is required, supplement with an appropriate biological buffer (e.g., phosphate, MOPS, HEPES) per your protocol, ensuring compatibility with the organism and selection system.
• Always confirm target pH after sterilization and cooling, as heat treatment can shift pH in complex media.

Green Alternatives

Although a culture medium rather than a solvent or reagent, sustainability considerations still apply (literature/general guidance):

• Resource-efficient sterilization:
  • Optimize autoclave loads and cycle selection to reduce energy and water consumption.
  • Prepare concentrated sterile stocks (where compatible) to minimize repeated full-cycle sterilizations.
• Waste minimization:
  • Scale batch sizes to expected usage to limit discard of expired/unused media.
  • Decontaminate spent media and biomass efficiently (validated autoclave cycles) to avoid chemical disinfectants where feasible.
• Raw material choices:
  • Consider media formulations using plant-derived peptones/extracts when performance allows, reducing reliance on animal-origin materials (balance with performance and regulatory needs).
• Process substitutions:
  • For analytical assays requiring low background, defined/minimal media can reduce downstream purification burdens, lowering solvent and resin usage.

Trade-offs (general):

• Complex media improve growth and robustness but introduce variable background organics that may increase downstream clarification and chromatography demands.
• Defined media increase control and reproducibility but often require more components, preparation time, and may deliver lower maximum biomass without optimization.

Pharmaceutical Uses

No therapeutic or clinical use is implied. For research and laboratory use only (item-specific: Research Use Only).

General laboratory/manufacturing context (literature/general knowledge):

• Commonly used in upstream process development for microbial fermentation as a seed or screening medium due to robust growth support.
• Applied in quality control microbiology for non-clinical environmental strains or method development (using appropriate validated media for compendial tests when required).
• Serves as a base for adding selective agents, antifoams, or inducers during small-scale development work; complex composition can mask minor nutrient deficiencies during early strain evaluation.

Regulatory note:

• When work falls under GMP or pharmacopeial requirements, select and qualify compendial media per relevant monographs and perform growth-promotion testing. This product’s specific compliance status is Not specified for this item; refer to CoA/Spec Sheet.

Physical Properties

Item-specific physicochemical specifications (appearance, pH of 1% or working solution, moisture content, particle size, etc.): Not specified for this item; refer to CoA/Spec Sheet.

General properties for dehydrated complex media (literature/general knowledge):

• Physical form: Typically a free-flowing tan-to-brown powder or granules (color varies with raw materials and lot-to-lot natural variation).
• Solubility: Water-soluble; designed to dissolve in purified water to the labeled working concentration.
• Solution character: Resulting solutions are generally clear to slightly opalescent; clarity depends on concentration and filtration.
• Hygroscopicity: Many dehydrated media are moderately hygroscopic; minimize exposure to ambient humidity to prevent caking and compositional drift.
• pH: Working-solution pH depends on the specific formulation and concentration; do not assume a value—verify against the lot CoA after preparation.
• Thermal behavior: Solutions are commonly sterilized by autoclaving (e.g., 121 °C) or sterile filtration as formulation permits (general practice).

Quantitative values such as density, refractive index, UV cutoff, logP, and exact pKa are not meaningful for a multicomponent mixture and are not specified; refer to CoA/Spec Sheet for any test parameters defined for this catalog item.

Quality and Grades

• Supplied grade: BioReagent (item-specific). In the context of complex media, this generally denotes suitability for biological research workflows (e.g., microbial cultivation, molecular biology support), with manufacturing controls intended to limit bioburden and batch-to-batch variability.
• What BioReagent typically implies (general):
  • Raw material qualification for enzymatic digests and extracts.
  • Defined internal tests (e.g., solubility, color, performance/growth promotion) appropriate to the medium type.
  • Documentation: lot traceability and Certificate of Analysis (CoA) specifying acceptance criteria relevant to the product.
• Stabilizers/antimicrobials: Not specified for this item; refer to CoA/Spec Sheet. Most dehydrated media do not include antimicrobial preservatives by default.
• UV/LC suitability: Not specified for this item; refer to CoA/Spec Sheet. Complex media are not typically used for analytical UV/LC applications due to intrinsic absorbance/background.

Practical notes for users:

• Expect natural variability inherent to biological digests; always verify critical performance with small-scale pilots when changing lots.
• For regulated workflows, retain CoA and consider in-house growth-promotion testing under your specific organism/conditions.

Reaction and Applications

This material is used for biological cultivation, not for chemical synthesis. Key research applications (literature/general knowledge):

• Routine cultivation of heterotrophic bacteria (e.g., enteric and soil isolates) where complex nitrogen and vitamin sources accelerate growth and increase biomass.
• Recombinant protein expression in bacteria: Complex nitrogen (tryptone) and growth factors (yeast extract) can improve cell density prior to induction when compared with minimal media.
• Bacteriophage work and cloning workflows: Rich media are commonly used for plating top agar overlays and amplification steps (formulation specifics vary by protocol).
• Starter cultures and seed trains in fermentation development: Provides robust growth before transfer to production media.

Practical tips:

• Reconstitution: Dissolve the labeled mass per liter in purified water. Heat and gentle stirring aid dissolution; avoid prolonged high temperatures before sterilization.
• Sterilization: Autoclave as appropriate for your facility (general practice: gravity or pre-vacuum cycles). Alternatively, sterile-filter if supplements are heat labile.
• Supplements: Antibiotics, trace metals, carbohydrates (e.g., glucose, glycerol), or buffers may be added as required by the organism/process, typically post-sterilization via sterile stock solutions.
• Monitoring growth: Optical density at 600 nm (OD600) provides a convenient measure of cell density; calibrate OD-to-CFU correlation for your strain and instrument.

Item-specific application claims beyond the above are not specified; refer to our CoA/Spec Sheet and your validated SOPs.

Reaction Conditions

This section is framed for biological cultivation rather than chemical reactions (literature/general guidance):

• Reconstitution: Dissolve the labeled mass per liter in purified water with stirring. Warm slightly if needed to aid dissolution; avoid boiling prior to sterilization.
• Sterilization: Autoclave according to institutional practice (e.g., 121 °C for an appropriate hold time) or sterile-filter if components/supplements are heat labile. Cool to ~45–55 °C before adding heat-sensitive supplements.
• Cultivation temperatures: Choose organism-appropriate setpoints (e.g., many mesophilic bacteria grow between 30–37 °C; psychrophiles/thermophiles require different ranges).
• Aeration/agitation: For aerobes and facultative anaerobes, use baffled flasks and adequate shaking (e.g., 180–250 rpm, platform-dependent) to maintain dissolved oxygen; scale to bioreactors with controlled kLa.
• Inoculation density: Start cultures from fresh colonies or standardized seed cultures; typical shake-flask inocula are a small percentage of the working volume to ensure a short lag phase.
• Monitoring: Track OD600, pH, and, when applicable, dissolved oxygen and off-gas CO2. Adjust feeding (carbon/nitrogen) or induction strategies per process needs.

Note: Exact concentrations, pH targets, and sterilization parameters for this item are Not specified; refer to CoA/Spec Sheet and validated SOPs.

Safety and Handling

Hazard classification for this specific item:

• Signal Word: Not specified for this item; refer to SDS.
• GHS Classification / Pictograms / H-Statements: Not specified for this item; refer to SDS.

General safety guidance (literature/general knowledge):

• Handle as a laboratory chemical and as a nutrient medium capable of supporting microbial growth after reconstitution.
• Avoid creating dust; respiratory and skin sensitization can occur with proteinaceous powders. Use local exhaust ventilation when weighing.
• Recommended PPE: lab coat, safety glasses, and suitable gloves. Consider a dust mask/respirator if airborne dust may be generated (per institutional risk assessment).
• Incompatibilities: Strong oxidizers and acids/bases may degrade organic components; avoid moisture uptake during storage.
• Microbiological risk: Once hydrated, the medium can become contaminated; aseptic technique is essential. Treat used media and cultures as biohazardous; decontaminate by autoclaving before disposal in accordance with institutional and local regulations.
• First aid (overview): If inhaled—move to fresh air; skin/eye contact—rinse with water; ingestion—rinse mouth. Seek medical attention if symptoms persist. Always defer to the product SDS for authoritative instructions.

Storage and shipping (item-specific):

• Storage: Room temperature (per Product Data); keep tightly closed and dry.
• Shipped: Normal conditions (per Product Data).

Solvent Selection

This product is a dehydrated complex medium intended for reconstitution in water; organic solvent selection is not applicable.

• Primary solvent: Purified water (DI/RO or equivalent). Use water quality consistent with your microbiology quality system (e.g., ASTM/ISO grade).
• Ionic strength/osmolarity: Dependent on formulation and concentration; consult the CoA/specification before adjusting with salts.
• Filtration/autoclaving: Many users sterilize by autoclaving; sterile filtration (0.22 µm) may be used when heat-labile supplements are present. Choice depends on formulation and downstream application.
• pH adjustment: If specified by the CoA, adjust pH at room temperature before sterilization using sterile acid/base; avoid overshooting to prevent Maillard reactions during autoclaving.

Comparison (general considerations):

• Tryptone–yeast extract broths vs defined/minimal media: Complex broths support faster growth and higher biomass but introduce compositional background—less suitable for isotope tracing or defined selection experiments.
• Presence/absence of NaCl: Some formulations include NaCl to set osmolarity; others omit it for salt-sensitive strains/processes. Verify the product’s specification prior to use.

Storage and Reconstitution

Item-specific storage and shipping:

• Storage: Room temperature (per Product Data). Keep container tightly closed in a cool, dry place. Protect from humidity to avoid caking and compositional changes.
• Shipped: Normal conditions (per Product Data).

Reconstitution (general guidance):

• Dissolve the labeled mass per liter of purified water with stirring until clear to slightly opalescent.
• Adjust pH if specified by the CoA/label. Do not rely on assumed targets for complex media.
• Sterilize by autoclaving under validated conditions, or sterile-filter if appropriate for your application.
• After sterilization, allow to cool before adding heat-labile supplements (e.g., antibiotics, vitamins).

Working solution handling:

• Store prepared medium at 2–8 °C if not used immediately; typical in-lab practice is to use within days to a few weeks depending on sterility and supplements. Exact shelf life: Not specified for this item; refer to CoA/Spec Sheet.
• Avoid repeated freeze–thaw of prepared medium; do not freeze unless your protocol specifically validates stability.

Notes:

• Appearance, exact composition, and any performance specifications are Not specified for this item; consult the lot-specific CoA/Spec Sheet.
• Research Use Only: For research use only (per Product Data).

Structure and Identity

This product is a complex, undefined microbiological medium blend intended for cultivation of microorganisms.

• Item type: Complex nutrient broth containing enzymatic digest(s) and extract(s); no single defined chemical entity.
• CAS: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular formula: Not applicable to complex mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• Molecular weight: Not applicable to complex mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• SMILES / InChI / InChIKey: Not applicable for complex mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• Grade: BioReagent (see Quality & Grades).
• 2D structural description: As a complex medium, this material comprises heterogeneous components (peptides, amino acids, vitamins, carbohydrates, minerals) rather than a discrete molecular structure.

General composition notes (literature/general knowledge):

• “Tryptone” is typically an enzymatic (pancreatic) digest of casein, supplying short peptides and free amino acids.
• “Yeast extract” provides B-vitamins, nucleotides, peptides, and growth factors.
• Formulations marketed as tryptone–yeast extract media may or may not include NaCl or buffer salts depending on supplier and specific recipe; consult the product’s CoA/specification for exact composition.

Synthetic Utility

Not applicable to classical organic synthesis. This product is a complex biological medium rather than a discrete reagent or building block.

For chemists integrating biology and chemistry:

• The broth can be used to cultivate microbial biocatalysts that perform chemoenzymatic transformations. Reaction development then occurs in whole-cell or lysate formats, not in the medium itself as a reagent.
• For downstream chemical synthesis, consider switching organisms into defined media to minimize background components that may interfere with product isolation.

Target Specificity

Not applicable. This product is not an antibody, probe, or affinity reagent and has no target-binding specificity. It is a general-purpose nutrient medium for cultivation of microorganisms.