Silicate Bacteria Medium - BioReagent

Cat. No.: S1528565

QUALITÉ & PURETÉ BioReagent

Storage

Room temperature

Shipped In

Normal

Vue d’ensemble

For cultivation of silicate bacteria

Spécifications

Spécifications et pureté

BioReagent

Conditions de stockage de stockage

Room temperature

Expédié en

Normal

Grade

BioReagent

Product Line

Produits biologiques

Application Protocols

The following are general, literature-based protocols for silicate-containing media; adapt to your organism and consult the product CoA for any item-specific directions.

A. Reconstitution (dry blend)

• Weigh the recommended mass per liter (Not specified for this item; refer to CoA/Spec Sheet).
• Add to ~80–90% of final volume of Type I/II water with stirring at room temperature until completely dissolved.
• Adjust pH as required by your organism (commonly near neutral to slightly alkaline in algal work; literature guidance).
• Bring to final volume with water.

B. Sterilization and supplementation

• Autoclave at 121 °C for 15–20 min if compatible. Allow to cool to ~40–50 °C.
• Separately sterile-filter heat-labile components (e.g., vitamins/trace metals) and silicate stock if instructed by your protocol to minimize polymerization; add aseptically to cooled medium.

C. Inoculation and incubation

• Work aseptically in a laminar flow hood.
• Inoculate with a log-phase culture to a defined starting density.
• Incubate under organism-appropriate conditions (temperature, photoperiod/irradiance for phototrophs, agitation/aeration as required). Parameters are organism-specific and not specified for this item.

Quality checks

• Verify pH and clarity post-sterilization and after silicate addition (look for haze/gelation as signs of silicate polymerization at high pH/concentration).
• Include sterility controls and, where applicable, growth-positive controls.

Biological Roles

Silicate (present as dissolved silicic acid, Si(OH)4, under physiological pH) is a crucial nutrient for several microorganisms, most notably diatoms.

• Structural biomineralization: Diatoms assimilate silicic acid via SIT family transporters and polymerize it into hydrated amorphous silica to construct intricate frustules (cell walls). Availability of silicate directly controls cell division in many diatom species (literature).
• Nutrient stoichiometry: In aquatic systems, Si:N:P ratios influence phytoplankton community structure. Silicate depletion can shift dominance away from diatoms toward non-silicifying taxa (literature).
• Metabolic integration: While silicate is not redox-active like nitrate or sulfate, its uptake is energy-dependent and coordinated with carbon fixation and cell-cycle checkpoints in diatoms. Trace metals and pH can modulate polymerization kinetics in vitro.
• Bacterial interactions: Certain bacteria associate with silicifying algae, participating in silica dissolution/recycling and organic matter turnover. A silicate-supplemented medium can be used to study such microbe–microbe interactions.

Note: The above roles are general, literature-based descriptions of silicate in microbial physiology. Item-specific composition or biological performance parameters for this product are Not specified for this item; refer to CoA/Spec Sheet.

Buffer Applications

This product is a culture medium, not a dedicated buffering agent. While many media include buffers to stabilize pH during growth, buffer capacity and pH range for this specific item are Not specified for this item; refer to CoA/Spec Sheet.

For dedicated buffering needs, use standard biological buffers (e.g., HEPES, MOPS, Tris) formulated at the desired pH and ionic strength, and then supplement the culture medium as appropriate per organismal tolerance.

Green Alternatives

For culture media, “green” considerations focus on water use, packaging, sterilization energy, and waste minimization rather than solvent substitution.

Strategies and comparisons (general guidance):

• Reduce sterilization energy: Use validated filtration for heat-labile fractions and autoclave only what requires heat sterilization. Batch-prepare working aliquots to avoid repeated cycles.
• Concentrates vs ready-to-use: Concentrated media reduce shipping mass/volume and packaging. Reconstitute on-site with purified water.
• Component sourcing: Prefer suppliers with documented responsible sourcing and minimized heavy-metal impurities.
• Waste reduction: Scale preparation to immediate needs; avoid overproduction that necessitates disposal of expired sterile media.

Comparison (literature-based examples; not item-specific):

• Guillard’s f/2 with silicate vs other algal media (e.g., ASM-1 with silicate): f/2 is widely used and well-characterized; ASM-type media may reduce certain trace-metal chelators. Selection depends on organismal requirements and downstream analytics.

Trade-offs:

• Higher silicate concentrations can increase the risk of polymerization and precipitate formation, potentially shortening shelf life; lower concentrations reduce waste but may limit growth. Balance per experimental need.

Pharmaceutical Uses

This product is intended For research use only (per Product Data) and is not formulated as a pharmaceutical excipient or for manufacturing of medicinal products.

• Regulatory status: No pharmacopeial monograph is implied. GMP suitability not claimed.
• Typical lab role (research context): Growth and maintenance of silicate-requiring microorganisms for basic research, bioprocess development studies, or environmental modeling.

Any use in clinical diagnostics, therapeutic manufacturing, or food applications is outside the scope of this product.

Physical Properties

Item-specific physicochemical specifications are not provided for this product and cannot be inferred for a multicomponent medium.

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• pH (as supplied or at working strength): Not specified for this item; refer to CoA/Spec Sheet. (Literature note: many silicate media for phototrophs operate near neutral pH, ~7.5–8.2, depending on formulation.)
• Solubility: Formulated for complete solubility/dispersibility in water (general for media). Exact solubility behavior: Not specified for this item; refer to CoA/Spec Sheet.
• Density, refractive index, osmolality, conductivity: Not specified for this item; refer to CoA/Spec Sheet.
• Sterility: Not specified for this item; refer to CoA/Spec Sheet. Users typically sterilize by autoclaving or filtration (literature/good practice).
• Preparation concentration: Not specified for this item; refer to CoA/Spec Sheet (some media are supplied as 1× or as concentrates in general practice).

Because this is a mixture designed for microbiological culture, single-compound properties such as boiling point, melting point, or logP are not applicable.

Quality and Grades

• Grade: BioReagent (as provided in Product Data).

What BioReagent typically signifies (general guidance):

• Suitable for biological and microbiological research where consistent nutrient composition and low levels of inhibitory impurities are important.
• Emphasis on lot-to-lot consistency, traceability, and documentation supportive of cell/microbial culture work.

Item-specific quality details:

• Purity/assay of individual constituents, UV cutoff, heavy metals, microbial bioburden, and peroxide levels: Not specified for this item; refer to CoA/Spec Sheet.
• Stabilizers/preservatives (if any): Not specified for this item; refer to CoA/Spec Sheet.

Practical implications:

• Expect performance appropriate for cultivating silicate-requiring organisms when prepared and sterilized correctly.
• For chromatography or clinical applications, this grade is not intended; it is optimized for research use in culture workflows.

Documentation: For exact composition, pH target, preparation instructions, and recommended sterilization, consult the Certificate of Analysis/Specification Sheet for the specific lot.

Reaction and Applications

Although not a chemical reagent for synthesis, Silicate Bacteria Medium serves as a functional matrix for biological processes in culture.

Representative research applications (general, literature-based):

• Cultivation of silicate-requiring microorganisms, especially diatoms, silicifying algae, and certain bacteria utilizing silicic acid in metabolism or biomineralization studies.
• Biomineralization research: probing silica deposition, frustule morphogenesis, and the roles of silaffins/long-chain polyamines in diatoms under controlled silicate availability.
• Nutrient limitation/enrichment experiments: modulating silicate concentration to study growth kinetics, uptake transporters (SITs), and competitive dynamics in mixed cultures.
• Environmental and aquatic microbiology: modeling silica cycles, testing effects of dissolved silicate on community composition.

Practical considerations (good laboratory practice):

• Prepare with high-purity water and sterilize by autoclaving (121 °C, ~15 psi, 15–20 min; literature generality) unless the CoA specifies otherwise. Heat-labile vitamins/trace metals are commonly sterile-filtered (0.22 μm) and added aseptically after cooling.
• Avoid high pH and prolonged storage of concentrated silicate stocks to minimize silica polymerization/gelation (literature). Prepare fresh silicate supplements and add last when possible.
• Maintain asepsis; use sterile vessels and work in a laminar flow hood when appropriate.

Item-specific application notes or performance claims are Not specified for this item; refer to CoA/Spec Sheet.

Reaction Conditions

Chemical reaction conditions are not applicable to this product. For culture use, general preparation conditions (literature/good practice) include:

• Dissolution in purified water with stirring at room temperature.
• pH adjustment to the target value specified by your protocol before sterilization.
• Sterilization by autoclaving at 121 °C for 15–20 min (if compatible) or by membrane filtration (0.22 μm) for heat-labile fractions.

Item-specific instructions (concentration, pH range, sterilization method) are Not specified for this item; refer to CoA/Spec Sheet.

Safety and Handling

• GHS classification: Not specified for this item; refer to SDS.
• Signal word / H-statements / pictograms: Not specified for this item; refer to SDS.
• General hazard profile (mixture, literature/good practice): Most culture media are of low acute hazard but may cause eye/skin irritation or respiratory irritation as dust/aerosol. Some components can affect local pH or ionic strength.
• PPE: Use lab coat, safety glasses, and appropriate gloves. Avoid inhalation of powders/aerosols; handle in a clean area to prevent contamination.
• Handling: Avoid moisture uptake if supplied as dry blend; use only clean, sterile vessels. Prepare with high-purity water (e.g., ASTM Type I/II). If autoclaving, do not seal tightly; allow pressure equalization.
• Incompatibilities: Store away from strong acids/bases and reactive oxidizers. Silicate-containing solutions can gradually form gels at high pH or concentration (general note); prevent unnecessary concentration by evaporation.
• First aid (overview; defer to SDS):
  • Inhalation: Move to fresh air; seek medical advice if symptoms persist.
  • Skin/eyes: Rinse with water for several minutes; remove contaminated clothing; seek medical attention if irritation continues.
  • Ingestion: Rinse mouth; do not induce vomiting; seek medical attention if unwell.
• Spills: Avoid dust. Collect mechanically; rinse residuals with water while preventing release to drains where prohibited.
• Waste: Dispose according to institutional and local regulations for laboratory media/biologicals; autoclave biological waste prior to disposal as required.

Solvent Selection

This product is a culture medium intended to be used in water. Organic solvent selection is not applicable.

• Primary solvent: Deionized or distilled water (ASTM Type I/II recommended in research workflows).
• Miscibility: Media components are formulated for aqueous dissolution; avoid organic co-solvents unless a protocol explicitly requires them.
• Practical tips:
  • Warm water (room temperature to ~35 °C) and stirring can aid dissolution (general practice).
  • Adjust pH, if required by your protocol, only after full dissolution and prior to sterilization.
  • Filter sterilize heat-labile components separately and add aseptically post-autoclave.

If your application requires defined ionic strength or buffering capacity, select water quality accordingly and verify pH/osmolality after reconstitution.

Storage and Reconstitution

• Storage conditions (as supplied): Room temperature (per Product Data). Keep container tightly closed, dry, and protected from light and moisture. Avoid temperature extremes.
• Shipping: Normal (per Product Data).
• Shelf life: Not specified for this item; refer to CoA/Spec Sheet.

After reconstitution (general guidance):

• Aqueous media are best used fresh. If storage is necessary, hold at 2–8 °C, protected from light, and use within a timeframe validated by your lab (item-specific stability Not specified for this item; refer to CoA/Spec Sheet).
• Do not freeze unless your protocol validates stability of all components.
• If sterilized by autoclave, allow to cool to room temperature before adding sterile-filtered heat-labile components. Mix gently to avoid aeration-induced pH drift.

Reconstitution tips (good practice):

• Use high-purity water and clean glassware. Avoid prolonged standing of concentrated silicate stocks; prepare fresh to minimize polymerization/gelation.
• Label with preparation date, lot number, and any supplements added. Monitor for precipitation or turbidity before use.

For exact reconstitution mass/volumes, target pH, and sterilization instructions, refer to the CoA/Spec Sheet for this SKU.

Structure and Identity

Silicate Bacteria Medium is a formulated microbiological culture medium; it is a multicomponent mixture rather than a single chemical substance.

• Product type: Complex/defined culture medium (mixture) enriched with a silicate source
• Intended use: cultivation of silicate-requiring microorganisms (e.g., diatoms and certain bacteria) for research purposes
• Molecular formula: Not applicable (mixture). Item-specific composition: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular weight: Not applicable (mixture). Item-specific values: Not specified for this item; refer to CoA/Spec Sheet.
• SMILES/InChI/InChIKey: Not applicable for a multicomponent medium.
• Structural features (descriptive, general): Typically contains inorganic salts, a silicic acid/silicate source (e.g., sodium metasilicate in common literature recipes), essential macro/micronutrients, and may include a buffer system; exact constituents for this SKU are Not specified for this item; refer to CoA/Spec Sheet.
• Form: Appearance Not specified for this item; refer to CoA/Spec Sheet. Often supplied as a dry blend or ready-to-use aqueous medium in general practice (literature).

Synthetic Utility

Not applicable as a chemical building block. Silicate Bacteria Medium is a biological culture matrix, not a reagent for organic or inorganic synthesis.

For chemical synthesis requiring silicates or silanols, consider defined reagents (e.g., sodium metasilicate, tetraethyl orthosilicate) rather than a complete culture medium.

Target Specificity

Target specificity is not applicable. This product is not an antibody, probe, or targeted biochemical. It is a general culture medium designed to support growth of silicate-requiring microorganisms.