BioReagent BioReagent para fluxos de trabalho cromatográficos e analíticos sensíveis que exigem interferência mínima da linha de base.
Room temperature Envio Normal. Consulte o COA específico do lote para obter as especificações exatas.
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For detection of anaerobic bacteria in beer
Documento abrangente sobre perigos, manuseamento, armazenamento e conformidade regulamentar.
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Consultar COA →Resumo de referência rápida das especificações e aplicações do produto.
Ver ficha técnica →Atributos de qualidade completos e critérios de aceitação para este grau.
Ver folha de especificações →The following protocols are general literature guidance for agar media and are not item-specific. Adjust according to your laboratory SOPs and the CoA/Spec Sheet when available.
A. Plate preparation • Weigh dehydrated medium (mass per liter: Not specified for this item). Disperse in high-purity water with stirring. • Heat to dissolve agar fully; autoclave (e.g., 121 °C, ~15 min). Cool to ~50–55 °C. • If required, aseptically add sterile-filtered supplements. Mix gently. • Pour into sterile Petri dishes (target volume per plate per your method), allow to solidify, dry surface if needed in a biosafety cabinet.
B. Streaking for isolation • Flame-sterilize loop or use sterile disposables. Streak a diluted inoculum across quadrants to achieve single colonies. • Invert plates and incubate at organism-appropriate temperature and atmosphere (time/temperature: method dependent).
C. CFU enumeration (spread plate) • Prepare serial dilutions of sample in sterile diluent. • Spread 100 µL onto plate surface with a sterile spreader. • Incubate and count plates with 30–300 colonies to compute CFU/mL or CFU/g.
D. Antibiotic supplementation (if applicable) • Add heat-labile antibiotics to cooled sterile medium to reach the desired final concentration. Mix gently and pour promptly.
Quality checks • Include positive-control strains and sterility controls with each batch of plates.
This product is not a single biomolecule but a formulated nutrient and gelling matrix supporting microbial growth.
General biological functions of components (literature; not item-specific): • Peptones/tryptones: Provide amino acids, small peptides, and nitrogen for biosynthesis and energy via deamination and entry into central metabolism. • Yeast/meat extracts: Supply vitamins (e.g., B-complex), nucleotides, carbohydrates, and trace elements that support robust growth and colony morphology. • Mineral salts: Contribute to osmotic balance and provide essential ions (e.g., K+, Na+, Mg2+, PO4 3−) that serve as enzyme cofactors and buffering capacity. • Agar: An inert, largely non-metabolizable polysaccharide that creates a porous gel; supports diffusion of nutrients and waste while providing a stable surface for colony formation.
Applicability: • Suitable as a general-purpose solid medium base in research; organism-specific performance depends on the exact “Modified NBB” formulation and any added supplements (not specified for this item). Empirical verification with reference strains is recommended.
This product is a nutrient medium base rather than a dedicated buffering system.
General guidance (literature; not item-specific): • Intrinsic buffering: Many complex media include phosphate or other weak buffering components that stabilize pH during growth; the capacity is modest compared to defined buffers and depends on formulation. • pH targets: General-purpose media are often adjusted near neutral pH before sterilization (exact value not specified for this item). For pH-sensitive organisms or assays, pre- and post-sterilization pH should be verified and, if necessary, adjusted. • Recipes: If stronger buffering is required, defined buffers (e.g., phosphate, MOPS, HEPES) can be incorporated into the aqueous phase prior to sterilization (confirm compatibility) or sterile-filtered and added post-sterilization to cooled medium.
If your primary need is precise pH control, consider preparing a separate, defined buffer rather than relying on the limited capacity of a complex agar medium.
Environmental and safety profile (general observations): • Water-based formulation with biodegradable organic components (peptones, yeast/meat extracts, agar polysaccharide), yielding comparatively low solvent hazard versus organic media or solvent-heavy workflows. • Primary environmental burdens arise from energy used during sterilization (autoclaving) and single-use plastics associated with plate pouring.
Greener practice options (literature; not item-specific): • Energy efficiency: Consolidate autoclave loads; use validated shorter sterilization cycles when appropriate; avoid overprocessing. • Waste reduction: Employ reusable glass dishes where feasible; optimize batch sizes to minimize expired plates. • Alternative gelling agents: Agar is renewable (red algae–derived). Where appropriate, lower-concentration agarose or plant-derived gellants (e.g., gellan gum) may reduce resource use; verify suitability for target organisms. • Safer supplements: Prefer less hazardous indicators/selective agents when equivalent performance is achievable.
Comparison snapshot (general): • Conventional nutrient agar vs. low-temperature agarose media: Agar requires higher melt temperatures (more energy) but offers superior mechanical strength and cost-effectiveness. Low-gelling-temperature agarose reduces thermal exposure for heat-labile additives but is more resource-intensive and costly.
No therapeutic or clinical claims. For research use only (per Product Data).
General roles in pharmaceutical and biomanufacturing laboratories (not item-specific): • Environmental monitoring and bioburden assessments: As a solid growth medium base, when supplemented appropriately, can be used to culture and enumerate microorganisms from research cleanrooms or process water (method validation required). • In-process controls: Supports growth-based assays (e.g., colony counts, contamination checks) in development labs. • Raw material and component testing: Agar plates prepared from such media can be used to detect microbial contamination in research settings.
Regulatory note: • Pharmacopeial conformity (e.g., USP/EP) and suitability tests are item- and lot-specific and are Not specified for this item; refer to CoA/Spec Sheet and your quality system for qualification before any regulated use.
Item-specific properties from Product Data: • Appearance: Not specified for this item; refer to CoA/Spec Sheet. • Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.
Literature/general properties for dehydrated agar media (not item-specific): • Physical form: Free-flowing, hygroscopic powder or granules; color ranges from off-white to light tan depending on extracts. • Solubility: Dispersible in water; agar requires heating to near boiling to dissolve fully; forms a firm gel upon cooling (typically at ~1.0–1.5% w/v agar, literature). • Gelation/transition (literature): Agar melts ~85–95 °C and gels upon cooling ~32–40 °C (hysteresis). • pH (prepared medium): Depends on formulation; many nutrient media target ~pH 6.8–7.4 at 25 °C (literature). Not specified for this item; refer to CoA/Spec Sheet. • Density/bulk density: Varies with granulation; Not specified for this item; refer to CoA/Spec Sheet. • Refractive index, logP, pKa, UV cutoff: Not applicable/meaningful for complex solid mixtures; Not specified for this item.
Practical notes (general): • Water quality materially affects clarity and gel strength; use deionized or ASTM Type 1 water for reproducible performance. • Foam during boiling can be minimized by gentle swirling and partial covering; avoid scorching to prevent caramelization and color changes.
• Supplied grade (from Product Data): BioReagent.
• Meaning of BioReagent grade (general guidance):
• Item-specific specifications (clarity, gel strength, moisture, pH of 1× medium, total ash, etc.): Not specified for this item; refer to CoA/Spec Sheet.
• Stabilizers/antimicrobials: Not specified for this item; refer to CoA/Spec Sheet. Most agar media bases do not contain antimicrobial inhibitors unless formulated; supplements are commonly added after sterilization as needed.
• Practical QC recommendations (general):
Chemical reaction use: This product is not typically used as a reagent or solvent in organic or inorganic synthesis.
Laboratory applications (general, literature) relevant to this medium type: • Microbial culture: Preparation of solid media plates for isolation, enumeration, and maintenance of bacteria/yeasts compatible with the NBB formulation. The “Modified” designation indicates formulation tweaks versus a parent NBB recipe; exact selectivity and nutrients are not specified for this item. • Plating workflows: Streaking for single colonies, spot assays, replica plating, and CFU counting. Suitable as a base to which selective agents, indicators, or supplements may be added as required by protocol. • Environmental/industrial microbiology: General growth support for non-fastidious organisms in research settings; performance for specific taxa should be validated empirically. • Method development: Matrix for antibiotic susceptibility agar dilution or diffusion assays when supplemented appropriately.
Practical tips (general): • Dissolve with heat to a clear solution, autoclave, then cool to ~50–55 °C before adding heat-labile components and pouring. • Maintain consistent plate depth (commonly ~20–25 mL per 100 mm plate) for reproducible diffusion-based assays. • Label plates with lot numbers and preparation dates; monitor dehydration during storage to avoid changes in water activity that can affect colony morphology.
Chemical reaction conditions are not applicable. The following are preparation and handling conditions for agar media (literature guidance; not item-specific):
• Reconstitution: Disperse the dehydrated medium in high-purity water with stirring. Heat to near boiling until the solution becomes clear, indicating agar dissolution. • Sterilization: Autoclave at 121 °C for ~15 minutes (15 psi). Actual time depends on volume and autoclave validation. Avoid autoclaving longer than necessary to limit Maillard reactions and color changes. • Post-sterilization handling: Cool to ~50–55 °C in a water bath before adding sterile-filtered, heat-labile supplements (antibiotics, indicators). Mix gently to avoid bubble formation. • Plate pouring: Dispense into sterile Petri dishes (commonly 20–25 mL per 100 mm plate) inside a laminar-flow hood. Allow to solidify on a level surface. • Storage of prepared plates: Invert and store in sealed sleeves at 2–8 °C to reduce dehydration and contamination. Warm to room temperature before use to minimize condensation. • Expected performance: Colony recovery, morphology, and growth rates depend on organism and the exact formulation; verify with positive-control strains.
Item-specific preparation parameters (mass per liter, target pH, supplements): Not specified for this item; refer to CoA/Spec Sheet.
Item-specific GHS 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 safety guidance for dehydrated microbiological media (literature; not item-specific): • Expected hazards: Low acute toxicity; dust may cause mechanical eye/respiratory irritation. Treat as a laboratory chemical. Avoid inhalation of dust and contact with eyes/skin. • PPE: Laboratory coat, safety glasses with side shields, and appropriate gloves (e.g., nitrile). Use a dust mask/respirator if handling large quantities or if dust generation is unavoidable. • Thermal hazards: Hot media can cause burns. Agar solutions are near-boiling during dissolution and are dispensed around 50–55 °C for plating; use heat-resistant gloves. • Sterilization: Autoclave according to institutional biosafety procedures (commonly 121 °C, 15 psi). Ensure vessels are not tightly sealed to prevent overpressure. • Biological risk management: Post-sterilization, the medium becomes a vehicle for microbial growth. Practice aseptic technique to prevent unintended propagation. Decontaminate all waste by autoclave or approved disinfectants. • Incompatibilities: Strong oxidizers may degrade organic constituents; strong acids/bases can alter pH and gelling properties. • First aid (overview): If inhaled—move to fresh air; eyes—rinse with water for several minutes; skin—wash with soap and water; ingestion—rinse mouth. Seek medical attention if symptoms persist.
Always consult the product SDS for authoritative hazard, exposure limits, and emergency procedures.
This product is a solid culture medium base; the relevant solvent is water.
• Primary solvent: High-purity water (ASTM Type 1 or equivalent). Avoid high ionic strength or chlorine-containing tap water that can influence gelation and clarity.
• Miscibility (general): Fully dispersible in water upon heating; not intended for use with organic solvents. Organic co-solvents can inhibit gelation and microbial growth.
• Practical solvent considerations:
• When to choose alternatives:
Item-specific conditions from Product Data: • Storage conditions (dry powder): Room temperature. • Shipped in: Normal. • Reconstitution protocol: Not specified for this item; refer to CoA/Spec Sheet.
General guidance for dehydrated agar media (literature; not item-specific): • Storage (dry): Keep tightly closed in original container at ambient temperature in a cool, dry place. Protect from humidity—product is hygroscopic. Avoid prolonged exposure to light and heat. • Shelf life: Use by the manufacturer’s indicated date on the label/CoA. Reseal promptly after opening; consider desiccant storage to control moisture. • Reconstitution: Dissolve the specified mass per liter of high-purity water (mass/L not specified for this item). Heat to clarify, autoclave, cool to ~50–55 °C, add any sterile-filtered supplements, and pour plates. • Prepared plates: Store inverted in sealed sleeves or containers at 2–8 °C to minimize dehydration and contamination. Label with preparation date and contents. Avoid repeated warming/cooling cycles. • Freeze-thaw: Not applicable to dry powder. Avoid freezing prepared agar plates as freeze–thaw damages gel structure and performance.
Always consult the product’s CoA/Spec Sheet and SDS for item-specific preparation, pH targets, and performance parameters.
• Item type: Modified NBB Agar Base is a complex, dehydrated microbiological culture medium base. It is a formulated mixture (typically including peptones/tryptones, yeast or meat extracts, mineral salts, and agar as the gelling agent). As a formulated mixture, it does not have a single defined molecular structure.
• Item-specific identifiers from Product Data:
• Structural features (general, literature):
• 2D description in words (general):
Not applicable for chemical synthesis. Modified NBB Agar Base is a biological culture medium and is not employed as a reagent, catalyst, or solvent in conventional organic/inorganic reaction chemistry.
If your workflow involves microbial biocatalysis, this medium can serve as the solid growth platform for maintaining strains between transformations, but it does not participate chemically in the transformations themselves.
Not applicable. This product is not an antibody, probe, or affinity reagent and has no target specificity parameters (antigen, epitope, clone, isotype).
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