Soybean Flour Agar Medium - BioReagent

Cat. No.: S1528671

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Overview

For screening and cultivation of Actinobacillus

Specifications

Specifications & Purity

BioReagent

Storage

Room temperature

Shipped In

Normal

Grade

BioReagent

Product Line

biological_products

Application Protocols

The following are general, literature-based protocols for research use. Adjust and validate per your SOPs. Item-specific concentrations and pH are Not specified for this item; refer to CoA/Spec Sheet.

A. Preparation of poured plates

• Weigh the dehydrated medium and add to purified water while stirring.
• Heat to dissolve; adjust pH if required.
• Autoclave using a validated cycle.
• Cool to ~45–55 °C; aseptically add sterile supplements if needed.
• Pour into sterile Petri dishes; let solidify; dry plates if excess surface moisture is present.

B. Streak isolation

• Flame-sterilize loop; streak inoculum across quadrants to obtain isolated colonies.
• Incubate under organism-appropriate conditions; examine colony morphology and pigmentation.

C. Slants and stabs

• Dispense hot medium into culture tubes on a slant rack for slants; allow to solidify.
• Inoculate for maintenance cultures; seal or cap to reduce desiccation.

D. Storage of prepared media

• Store sealed plates/tubes at 2–8 °C to extend shelf-life (general guidance); warm to room temperature before use and check for condensation or contamination.

E. Disposal

• Autoclave all used media and cultures before disposal in accordance with institutional biosafety policies.

Biological Roles

This product functions as a nutrient matrix for microbial growth rather than a single biomolecule.

General medium biology (literature):

• Carbon and energy: Soy-derived carbohydrates and residual lipids supply carbon and energy; partial hydrolysis products (oligosaccharides) are accessible to many environmental isolates.
• Nitrogen and growth factors: Soy proteins/hydrolysates provide peptides, amino acids, and vitamins (e.g., B-group) that support biosynthesis and cell division across diverse microbes.
• Solid support: Agar provides a porous, hydrated gel enabling oxygen diffusion and colony isolation while withstanding typical incubation temperatures without liquefaction.
• Osmotic and pH buffering: Intrinsic salts and organic components offer modest buffering; users typically adjust pH before sterilization to target organism requirements.
• Microbial responses: Medium composition can influence secondary metabolism, pigmentation, and sporulation (notably in actinomycetes and filamentous fungi). Researchers exploit this by comparing growth on soy-based vs glucose/minimal or animal-peptone media to study metabolic regulation.

Item-specific composition and growth-promotion data: Not specified for this item; refer to CoA/Spec Sheet.

Buffer Applications

Not typically used as a defined buffer system. Soybean Flour Agar Medium is a complex culture medium with limited intrinsic buffering.

Practical notes (general):

• If a specific pH is required, adjust the reconstituted medium with sterile acid/base before sterilization (or after, aseptically) and validate the final pH at the use temperature.
• For electrophoresis, protein purification, or biochemical assays requiring precise ionic strength and buffering capacity, use defined buffer systems (e.g., phosphate, MOPS, HEPES) prepared separately and, if needed, incorporated into the medium after sterilization.

Item-specific buffering capacity or target pH: Not specified for this item; refer to CoA/Spec Sheet.

Green Alternatives

Context: Soybean Flour Agar Medium is already plant-derived, reducing reliance on animal-based peptones/hydrolysates.

Sustainability considerations (general):

• Plant-based sourcing: Replacing casein/meat peptones with soybean components can lower environmental impact and address animal-free compliance. Verify supply chain and GM/non-GM preferences as required by your program.
• Agar vs alternatives: Agar (from red algae) is biodegradable and widely used. Alternatives like gellan gum (microbial polysaccharide) can substitute agar to reduce pressure on seaweed resources; gellan often provides clearer gels and different gel strengths at lower concentrations, but ionic conditions (e.g., Ca2+, Mg2+) significantly influence gelation behavior.
• Waste minimization: Prepare only the volume needed; segregate uninoculated waste for conventional disposal when allowed; autoclave inoculated materials and consider waste-to-energy programs where available.
• Energy efficiency: Use media cookers/dispensers to reduce heat loss; autoclave full loads with validated cycles to lower per-unit energy.

Trade-offs (literature):

• Soy-based media can introduce batch variability tied to agricultural inputs; rigorous lot qualification and GPT mitigate this.
• Agar sustainability depends on regional harvesting practices; microbial gums may offer more consistent supply but can require different handling and cation control.

Pharmaceutical Uses

For research use only (per Product Data). No clinical/therapeutic use.

General roles in pharmaceutical/biotech laboratories (literature):

• Microbiological quality control: Plant-based agar media are used for environmental monitoring, bioburden testing, and growth-promotion controls when animal-free media are preferred. Selection of organisms and incubation conditions must follow compendial or internal SOPs.
• Raw material and process hygiene assessments: Supports enumeration/isolation of environmental contaminants in non-sterile manufacturing areas.
• Method development: Useful as a base for evaluating antimicrobial activity or disinfectant efficacy by zone-of-inhibition or surface recovery studies after supplementation, where applicable.

Compliance considerations:

• For regulated testing, ensure the lot-specific CoA documents growth-promotion and physical parameters; qualify media per laboratory validation procedures.

Item-specific pharmacopeial conformity (e.g., USP/EP monographs): Not specified for this item; refer to CoA/Spec Sheet.

Physical Properties

Item-specific properties from Product Data:

• Grade: BioReagent
• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Storage conditions: Room temperature (per Product Data)
• Shipping: Normal (per Product Data)

Not specified for this item; refer to CoA/Spec Sheet:

• Moisture content, ash, pH (of prepared medium), clarity, gelling strength, particulate level.
• Melting/boiling point, density, refractive index, logP, pKa: Not applicable/Not specified for complex dehydrated media.

General information (literature, typical for dehydrated agar media; not product specifications):

• Physical form: free-flowing, hygroscopic powder or granules; color often beige to light tan depending on soy source and lot.
• Solubility: Hydrates and dissolves/disperses in water upon heating with agitation; forms a firm gel on cooling due to agar gelation.
• Thermal behavior: Agar dissolves on heating (>80–90 °C) and gels on cooling (gelation typically ~30–40 °C; melting significantly higher), imparting thermoreversible solidification.
• Hygroscopicity: Tends to absorb ambient moisture; desiccation control improves shelf-life and performance.
• pH after sterilization and gelation depends on formulation and water quality; verify against CoA for lot-specific values.

Quality and Grades

Item-specific: Grade is listed as BioReagent.

What BioReagent grade generally implies (general guidance; not a specification for this item):

• Suitable for biological research workflows such as routine microbiology, environmental monitoring, and academic laboratory studies.
• Emphasis on consistent nutrient performance, low inhibitory contaminants, and batch-to-batch reproducibility validated by growth-promotion testing (GPT) or comparable functional checks, when applicable.

Considerations for complex media:

• Composition is intentionally complex/undefined (soy-derived hydrolysates, carbohydrates, minerals); growth performance rather than chemical purity defines quality.
• For regulated environments (e.g., QC labs), obtain and retain the Certificate of Analysis (CoA) with lot-specific performance, pH, and appearance criteria.
• If your application requires animal-free sourcing, soybean-based media are advantageous versus casein/animal hydrolysate–based blends; confirm absence of animal components on the CoA.

Item-specific values such as microbial limits, heavy metals, or exact nutrient content: Not specified for this item; refer to CoA/Spec Sheet.

Reaction and Applications

Chemical reaction use is not applicable; this is a biological culture medium. Instead, consider the following research applications (general, literature-based; for research use only):

• Cultivation and enumeration: Supports growth of a broad spectrum of environmental and laboratory microorganisms that utilize plant-derived nutrients; commonly used for fungi, actinomycetes, and bacteria tolerant of complex, soy-based substrates.
• Isolation workflows: Useful in soil microbiology and plant-associated microbiome studies where soy polysaccharides and peptides can enhance sporulation or pigment production in certain taxa. Adjusting incubation temperature, humidity, and light can tailor selectivity.
• Morphology and sporulation: The solid agar matrix enables colony morphology assessment, pigment formation, and sporulation screening; overlay or replica-plating techniques can be employed for selection.
• Method development: Serves as a non-animal alternative medium base in assay development, microbial bioprospecting, and preliminary antimicrobial screening (with supplements as needed). Always validate growth-promotion suitability for target organisms.

Item-specific formulations, selectivity agents, or growth-promotion results: Not specified for this item; refer to CoA/Spec Sheet.

Reaction Conditions

Chemical reaction conditions are not relevant. The following provides general microbiological preparation conditions (literature; not product specifications):

• Reconstitution: Gradually disperse the dehydrated medium into purified water with vigorous stirring to prevent clumping. Heat to near boiling to fully dissolve agar.
• Sterilization: Autoclave using a validated cycle (commonly 121 °C for ~15 minutes for small volumes) to achieve sterility. Confirm cycle parameters per load size and equipment performance.
• Pouring plates: Cool the sterilized medium to approximately 45–55 °C before adding any heat-labile supplements (antibiotics, indicators), mix gently to avoid bubbles, and pour into sterile plates. Allow to solidify on a level surface.
• Incubation: Select temperature and atmosphere appropriate for target organisms (e.g., ambient air vs. CO2, aerobic vs. microaerophilic). Record lot number and preparation details for traceability.
• Quality checks: Inspect for clarity, gel strength, color, and absence of contamination after incubation of an uninoculated control plate.

Item-specific preparation concentration (g/L), target pH, or supplement compatibility: Not specified for this item; refer to CoA/Spec Sheet.

Safety and Handling

Item-specific hazard information: Not specified for this item; refer to CoA/Spec Sheet and SDS for authoritative classification.

• Signal word: Not specified for this item; refer to CoA/Spec Sheet.
• H-statements/GHS class/Pictograms: Not specified for this item; refer to SDS.

General laboratory safety guidance (for dehydrated culture media; literature):

• PPE: Wear lab coat, nitrile gloves, and safety glasses. Use a dust mask/respirator if airborne dust may be generated during weighing to minimize inhalation of nuisance dust.
• Incompatibilities: Avoid strong oxidizers and moisture uptake. Keep away from sources of ignition for dusty operations (combustible dust potential under extreme conditions).
• Thermal hazards: When preparing media, hot liquids and pressurized steam can cause burns—use heat-resistant gloves and vent autoclaves carefully.
• Biohazard note: While unopened medium is typically nonhazardous, once inoculated it can contain viable microorganisms. Handle used plates/broths as biohazardous material and autoclave before disposal per institutional biosafety procedures.
• First aid (overview): If inhaled, move to fresh air; for skin/eye contact with dust, rinse with water; if ingested, rinse mouth. Seek medical advice if irritation persists. Always consult the SDS for lot-specific guidance.
• Spill response: Avoid dust generation; sweep/vacuum with HEPA-equipped device; dispose according to local regulations.

Solvent Selection

This product is a dehydrated culture medium intended for reconstitution in water; conventional organic-solvent selection does not apply.

Practical guidance (general, literature):

• Water quality: Use purified water (e.g., ASTM Type II or better) to minimize ionic/organic contaminants that can inhibit microbial growth or alter gel strength.
• Dissolution: Add powder gradually to cold or room-temperature water with vigorous stirring to wet thoroughly; then heat to near-boiling to fully dissolve agar before sterilization.
• Additives: If selective supplements or antibiotics are needed, sterilize them separately by filtration and add aseptically after the agar medium has cooled to ~45–55 °C to avoid thermal degradation (temperature range is general guidance).
• Alternative gelling systems: If low-temperature gelling is required, consider agarose-rich or low-gelling-temperature agar blends; confirm compatibility with soybean nutrient profiles.

Not specified for this item; refer to CoA/Spec Sheet for any product-specific reconstitution volumes or conductivity/pH targets.

Storage and Reconstitution

Item-specific (from Product Data):

• Storage conditions (dehydrated medium): Room temperature.
• Shipped: Normal.

Not specified for this item; refer to CoA/Spec Sheet:

• Exact reconstitution concentration (g/L), target pH, and appearance criteria of prepared medium.

General guidance (literature):

• Storage (dry powder): Keep tightly closed in the original container, protected from humidity and excessive heat. Use desiccant where appropriate. Avoid repeated opening in high-humidity environments.
• Shelf-life: Follow labeled expiry; record opening date and lot for traceability.
• Reconstitution: Disperse into purified water with stirring, heat to dissolve agar fully, adjust pH as required, and sterilize by autoclaving. If using heat-labile supplements, cool to ~45–55 °C before aseptic addition.
• Prepared media: Store poured plates or tubes in sealed sleeves or bags to minimize drying, typically at 2–8 °C. Inspect for dehydration, syneresis, or contamination prior to use. Avoid freeze–thaw cycles of prepared agar.
• Stability notes: Water quality, autoclave time/temperature, and supplement compatibility can influence gel strength and growth performance—perform growth-promotion or control checks when introducing new lots.

Structure and Identity

Item-specific: This product (SKU S1528671) is a complex, undefined culture medium composed of plant-derived components (soybean flour) and a gelling agent (agar). As a heterogeneous mixture, it does not have a single molecular formula or molecular weight.

Not specified for this item; refer to CoA/Spec Sheet:

• Molecular formula: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.
• SMILES / InChI / InChIKey: Not applicable to complex mixtures.

General description (literature):

• Soybean flour contributes peptides, amino acids, carbohydrates, vitamins, and minerals derived from plant proteins and lipids; agar (a polysaccharide from red algae) provides a thermoreversible gel matrix.
• Structural features: The medium comprises a particulate blend of biopolymers and low–molecular weight nutrients. No discrete 2D structure can represent the product. Agar is primarily agarose/ agaropectin repeating galactose units; soybean flour contains proteins (glycinin, beta-conglycinin), fibers, and minor lipids.

Synthetic Utility

Not applicable. This product is a biological culture medium and is not typically employed as a reagent or building block in synthetic organic or inorganic chemistry.

Guidance for chemists (general):

• If a solid support or gel matrix is needed for chemistries or assays, consider purified agarose or synthetic hydrogels with defined functionalization rather than complex nutrient media.
• For biocatalysis experiments, researchers may culture producer strains on soy/agar plates to select colonies, but actual synthetic transformations should be carried out in defined reaction media appropriate to the catalyst/biocatalyst.

Item-specific reactive functionality, UV cutoff, or impurity profile: Not applicable/Not specified for this item; refer to CoA/Spec Sheet.

Target Specificity

Not applicable. This product is not an antibody, probe, or targeted affinity reagent.

Item-specific organism selectivity or growth-promotion spectrum: Not specified for this item; refer to CoA/Spec Sheet.

General note (literature): Soy-based complex media are broadly supportive but nonselective unless supplemented with inhibitors or differential indicators.