Soybean Flour Liquid Medium - BioReagent

Cat. No.: S1528653

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Visão geral

For cultivation of Actinobacillus

Specifications

Especificações e pureza

BioReagent

Condições de armazenamento de armazenamento

Room temperature

Enviado em

Normal

Grau

BioReagent

Product Line

biological_products

Application Protocols

Below is a general protocol for using soybean flour liquid medium in shake-flask culture. This is literature-based guidance and not item-specific; adjust per organism and process.

• Preparation
  • If supplied non-sterile: Distribute into suitable vessels with headspace (e.g., 100 mL in 500 mL baffled flask). Autoclave using validated cycle; allow to cool to handling temperature. If supplied sterile, proceed aseptically without further sterilization. Sterility status is not specified for this item; check CoA/Spec Sheet.
  • Optional: Add sterile-filtered supplements (antibiotics, buffers, trace metals) post-sterilization.
• Inoculation
  • Work in a BSC. Inoculate 1–5% v/v from a fresh starter culture. Include an uninoculated control for contamination monitoring.
• Incubation
  • Temperature and agitation per organism optimum (e.g., 30–37 °C; 180–250 rpm). Use vented caps or breathable seals to ensure gas exchange.
• Monitoring
  • Measure OD600 periodically; record pH and, if relevant, glucose and ammonia. For product assays, take time-course samples.
• Harvest
  • Collect cells at desired phase. For metabolite studies, quench rapidly to preserve state. Clarify supernatant by centrifugation/filtration as needed.
• Disposal
  • Autoclave spent media and materials before disposal.

For bioreactor use, scale parameters (kLa, DO setpoint, feed strategies) should be developed in process development runs.

Biological Roles

This product functions as a nutrient-rich environment for microbial growth rather than exerting a specific biochemical role as a defined metabolite.

General biological contributions of soybean flour-based media (literature/general knowledge):

• Nitrogen supply: Provides a spectrum of peptides and amino acids improving biosynthesis of proteins and enzymes across many microbes.
• Carbon/energy: Soluble carbohydrates and oligosaccharides support ATP generation via glycolysis and downstream pathways.
• Growth factors: Minor vitamins and minerals act as cofactors in essential metabolic reactions (e.g., flavins, B-complex traces, Mg2+ for ATP-dependent enzymes).
• Buffering capacity: Phosphate-containing components and amino groups can confer limited buffering near neutral pH, though capacity depends on formulation.
• Induction effects: Complex mixtures can modulate expression of secondary metabolism in some organisms (e.g., antibiotic biosynthesis), often via nitrogen source sensing and C/N balance.

Use cases:

• Seed culture preparation before defined/production media.
• Maintenance of culture collections where robust, non-fastidious growth is required.

Because composition is undefined relative to chemically defined media, this type of medium is best suited to applications where batch-to-batch performance is validated empirically for the target organism(s).

Buffer Applications

This product is a complex nutrient medium and is not designed as a buffer system for analytical chemistry or biochemical assays.

General notes (literature):

• Intrinsic buffering capacity may be modest due to amino groups and phosphate-containing constituents, but pH control should not rely on this alone during active growth.
• For experiments requiring tight pH control, supplement with a defined buffer (e.g., phosphate, MOPS, HEPES) prepared as sterile stock and added aseptically to the cooled medium. Specific buffer compositions and pKa values are application-dependent and not specified for this item.

Green Alternatives

Sustainability context (general literature guidance)

• Plant-derived complex media such as soybean flour-based formulations are often considered more sustainable than animal-derived peptones (e.g., casein, meat extracts) due to renewable agricultural sourcing and reduced ethical concerns.

Comparison (general, not item-specific)

• Soybean flour medium vs animal peptone media:
  • Source: Renewable plant vs animal byproduct
  • Allergenicity: Soy can trigger allergies; animal peptones may have prion/TSE concerns (mitigated by sourcing and processing)
  • Nutrient profile: Soy peptones are typically rich in peptides and may have different amino acid balance than casein/meat peptones; performance is strain-dependent
  • Footprint: Plant-based inputs often have lower greenhouse gas intensity per kg of protein equivalent (literature), but outcomes vary by region and farming practice

Operational green practices

• Sterilize efficiently: Use validated autoclave cycles to avoid over-processing, which saves energy and preserves nutrients.
• Single-use plastics reduction: Employ reusable glassware where feasible; if using single-use bioreactor bags, dispose of per local energy recovery programs.
• Waste minimization: Prepare only the volume needed; decontaminate and dispose of spent media appropriately.

Note: Select the medium that best balances performance with sustainability for your organism and process goals; verify with small-scale trials.

Pharmaceutical Uses

No therapeutic or clinical use is claimed for this product. For research use only.

General roles in pharmaceutical R&D and manufacturing support (literature/general guidance):

• Microbiological quality control: Growth promotion testing (GPT) and environmental monitoring culture steps may employ complex, nutrient-rich media; suitability must be verified per compendial methods. Use of this specific item for GPT requires documented validation.
• Fermentation development: Seed trains for microbial expression systems (e.g., recombinant protein-producing strains) may use soy-based complex media for robust early-stage growth before transition to defined production media.
• Process screening: Media optimization studies to identify economical nitrogen sources for metabolite or enzyme production.
• Raw material risk profile: Plant-based media avoid animal-origin concerns (e.g., TSE), but allergen management and trace pesticide/residue control should be addressed via supplier CoA and quality agreements.

Compliance note: Where pharmacopeial media (e.g., USP/EP) are required, confirm equivalence; specifications for those standards are not provided for this item and must be verified independently.

Physical Properties

Item-specific facts (from Product Data)

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Storage Conditions: Room temperature
• Shipped: Normal
• Additional physicochemical specs (pH, osmolality, solids content, density, refractive index): Not specified for this item; refer to CoA/Spec Sheet.

General properties (literature/general knowledge — for context only, not item specifications)

• State: Aqueous liquid suspension/solution of soybean flour-derived components; may exhibit slight turbidity typical of unclarified complex media.
• Typical pH: Often near neutral in many soybean-based media formulations, but exact value depends on recipe and manufacturer.
• Solubility: Components are dispersed/dissolved in water; lipophilic minor fractions may remain colloidal.
• Heat stability: Complex media tolerate autoclaving; some heat-labile vitamins may decrease upon sterilization—supplement post-sterilization if required.
• Filterability: May be filter-sterilizable through 0.22–0.45 µm filters depending on particulate load; prefiltration can improve throughput.

Practical notes

• Avoid extended exposure to elevated temperatures beyond intended sterilization, which can increase Maillard reactions (browning) and alter nutrient profile (literature).
• Gentle mixing maintains homogeneity and prevents settling of any fine particulates in storage and during dispensing.

Quality and Grades

Item-specific facts (from Product Data)

• Grade/Purity: BioReagent

What BioReagent grade implies (general guidance)

• BioReagent grade denotes suitability for biological research applications, with manufacturing controls aimed at consistent performance in cell/microbial culture and biochemical workflows. Typical controls may include low bioburden/sterility, defined solids range, and functional growth performance testing; exact acceptance criteria are product-specific.

How to use grade information for this item

• For routine microbiology, fermentation seed cultures, and general growth studies, BioReagent grade is appropriate.
• For highly sensitive applications (e.g., proteomics with trace contaminant concerns, cell-line–specific media development), review the CoA/Spec Sheet for this SKU and consider lot qualification.

Stabilizers and additives

• Stabilizers, antibiotics, antifoams, or buffers are not specified for this item; refer to CoA/Spec Sheet. If absent, users may supplement as needed based on process requirements.

Documentation

• Request and retain the lot-specific CoA for parameters such as sterility test, pH range, total nitrogen, solids/Brix, and appearance (when available). These ensure reproducibility across experiments and scale-up.

Reaction and Applications

As a complex, plant-derived liquid medium, this product is intended for microbiological cultivation rather than chemical reactions.

Representative research applications (literature/general guidance):

• Cultivation of bacteria, yeasts, and select filamentous fungi that perform well in soybean-based complex media, including seed cultures for fermentation development.
• Antibiotic production and screening assays, where nitrogen-rich soy hydrolysates can enhance secondary metabolite titers in some strains.
• Enzyme expression and secretion studies for organisms favoring plant-derived nitrogen sources.
• Microbial physiology experiments (growth curves, substrate utilization) where undefined nutrient richness is acceptable or desired.

Practical tips:

• Sterilization: If the product is supplied non-sterile, autoclave according to institutional SOPs; alternatively, filter-sterilize through 0.22 µm if clarity/heat sensitivity is a concern. Item sterility status is not specified—refer to CoA/Spec Sheet.
• Aseptic technique: Work in a BSC for inoculations; flame-sterilize tools where appropriate; minimize vessel openings.
• Supplementation: Carbohydrate concentration, buffering salts, trace metals, or vitamins may be added to tailor growth. Record additions for reproducibility.
• Aeration: For aerobic cultures, use baffled flasks at 1:5 to 1:10 fill volume; maintain adequate agitation and temperature per organism requirements.
• Monitoring: Track OD600, pH, and dissolved oxygen (for bioreactors). Harvest during exponential phase for biomass-focused work.

Reaction Conditions

Because this is a culture medium rather than a chemical reagent, there are no chemical reaction conditions to report.

General cultivation conditions (literature/general guidance):

• Sterilization: Autoclave at validated conditions appropriate for volume (e.g., 121 °C), or filter-sterilize through 0.22 µm if heat-sensitive supplements are present. Specific cycles should follow institutional SOPs.
• Inoculation density: Commonly 1–5% v/v from an actively growing preculture for shake-flask work; adjust to organism and objective.
• Temperature: Set to organism optimum (e.g., many mesophilic bacteria 28–37 °C; yeasts 25–30 °C). Verify for your strain.
• Agitation/aeration: 180–250 rpm in baffled flasks for aerobic microbes; sparged/controlled DO in bioreactors. Fill flasks to 10–20% of nominal volume to maximize gas exchange.
• pH: Start near neutral for many microbes; active pH control in bioreactors via acid/base or CO2 is recommended for longer runs.
• Duration: Growth to mid-exponential phase often within 6–16 h for fast-growing bacteria; slower for yeasts and filamentous fungi.

Note: All values above are literature norms and should be optimized empirically. Item-specific parameters (pH, solids, sterility) are not specified; consult CoA/Spec Sheet.

Safety and Handling

Item-specific hazard information (from Product Data)

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

General laboratory safety (literature/general guidance; defer to SDS for authoritative data)

• Soybean flour liquid media are generally considered low-hazard laboratory reagents but can support rapid microbial proliferation. Treat as potentially biohazardous after contact with biological samples or once inoculated.
• PPE: Lab coat, gloves (nitrile), and safety glasses. Use biological safety cabinet (BSC) when handling pathogenic cultures or aerosol-generating steps.
• Hygiene: Avoid inhalation of aerosols and ingestion. Do not pipette by mouth. Wash hands after handling.
• Incompatibilities: Avoid contamination with strong oxidizers or reactive chemicals that could degrade organic constituents. Keep containers closed to maintain sterility.
• Waste: Autoclave spent or contaminated media before disposal according to institutional biosafety procedures.
• First aid (general):
  • Skin/eye contact: Rinse with water. Remove contaminated clothing if necessary.
  • Inhalation of aerosols: Move to fresh air; seek medical attention if symptoms persist.
  • Ingestion: Rinse mouth; seek medical attention according to SDS guidance.
• Allergens: Soy-derived materials may present allergen concerns for sensitized personnel; minimize skin contact and aerosols.
• Spill response: Absorb with paper towels/absorbent, decontaminate with appropriate disinfectant (e.g., 10% bleach), then rinse; autoclave waste if contaminated.

Solvent Selection

This product is an aqueous liquid culture medium and is not used as a solvent in synthetic chemistry. Therefore, traditional solvent selection guidelines (polarity, dielectric constant, UV cutoff) are not applicable.

Practical notes (general):

• Compatibility: Fully water-based; miscible with water. Avoid mixing with organic solvents unless intentionally preparing specialized media—organic cosolvents can inhibit growth of many microbes.
• Supplementation: If adding stock solutions (e.g., antibiotics, vitamins), use sterile, aqueous stocks where possible; filter-sterilize supplements and add aseptically after any heat-sterilization step.
• Foam and oxygen transfer: For fermentation, consider antifoam additions (if compatible) and vessel geometry to optimize gas exchange. Additives are not specified for this item; verify compatibility.
• pH/buffering: If specific pH control is needed, use sterile buffer concentrates to adjust; base medium buffering capacity is formulation-dependent (not specified for this item).

Storage and Reconstitution

Item-specific facts (from Product Data)

• Storage Conditions: Room temperature
• Shipped: Normal

General handling guidance (literature/general knowledge)

• Shelf life and sterility: If supplied sterile, maintain container integrity; once opened, handle aseptically and consider aliquoting to minimize repeated exposure. If supplied non-sterile, sterilize before use. Sterility status and expiry are not specified for this item; refer to CoA/Spec Sheet.
• Mixing: Gently invert or stir before dispensing to ensure homogeneity; some components may settle over time.
• Light: Store away from direct sunlight to minimize degradation and warming; amber or opaque storage is beneficial but not mandatory unless specified by CoA.
• Temperature excursions: Room temperature storage is acceptable per Product Data; avoid freezing unless validated, as freeze–thaw can precipitate or denature components.
• Reconstitution: Not applicable—this is a liquid medium. If concentration adjustments are desired, perform under sterile conditions using sterile water and confirm osmolarity/pH impacts.
• Post-use storage: For partially used bottles, store tightly closed at room temperature or 2–8 °C depending on contamination risk and performance needs; return to room temperature and mix before reuse. Define and document in-lab beyond-use dating based on sterility controls.

Always consult the lot-specific CoA/Spec Sheet and SDS for definitive storage and handling instructions.

Structure and Identity

Item-specific facts (from Product Data)

• Product: Soybean Flour Liquid Medium (SKU: S1528653)
• Grade: BioReagent
• Form: Liquid medium
• CAS, CID, InChIKey, SMILES: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular formula / Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.

General description (literature/general knowledge)

• This material is an undefined/complex biological medium derived from plant (soybean) flour components dispersed in water. It is not a single chemical entity but a mixture of peptides, amino acids, carbohydrates, minerals, and lipids typical of soybean hydrolysates.
• Structural features: As a complex mixture, there is no discrete 2D or 3D structure to describe. Functionally, the medium provides nitrogen (peptides/amino acids), carbon (soluble carbohydrates), vitamins, and trace elements to support growth of microorganisms in culture.
• Typical composition (conceptual, literature):
  • Soy-derived peptides and free amino acids (nitrogen source)
  • Soluble sugars and oligosaccharides (carbon/energy)
  • Phospholipids and fatty acids (minor)
  • Minerals (K, Mg, Ca, Fe traces) and vitamins (minor)

Identity implications

• Being plant-based and complex, batch-to-batch characteristics are controlled by manufacturing specifications rather than a fixed molecular identity. Authentication relies on CoA parameters (e.g., sterility, total nitrogen, solids content, pH) — consult CoA/Spec Sheet for this item.

Synthetic Utility

Not applicable in the context of organic synthesis or small-molecule transformations.

Relevant utility in biotechnology (general guidance):

• As a complex nutrient base, soybean flour liquid medium can serve as a starting matrix to which defined carbon sources, buffers, and trace elements are added to create organism-specific growth media.
• Provides a convenient platform for high-throughput screening of strain libraries where rapid biomass accumulation is desired prior to selection based on phenotype or product titer.
• Can be used to prepare agarized versions (if combined with agar) for plate-based selection and colony isolation; this item’s formulation details are not specified—consult CoA/Spec Sheet before adapting to solid media.

For chemical synthesis tasks, refer to conventional solvents and reagents; this product is not intended as a reagent or catalyst.

Target Specificity

Not applicable. This product is not an antibody, enzyme inhibitor, or affinity reagent and has no defined molecular target specificity.

Use it as a general-purpose, plant-derived nutrient medium. For organism-specific performance, conduct strain-level validation and growth promotion testing as needed.

Perguntas frequentes

How should this product be stored?

Store at room temperature.