MMO-MUG Medium - BioReagent

Cat. No.: M1528767

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Übersicht

For total coliform enzyme substrate detection

Specifications

Spezifikationen & Reinheit

BioReagent

Storage

Room temperature

Verschickt in

Normal

Note

BioReagent

Product Line

biological_products

Application Protocols

The Product Data do not include a proprietary protocol. The following is generalized, literature-based guidance for MUG media; adapt to your validated method and consult the CoA/Spec Sheet.

Presence–Absence test (water, literature example):

1. Prepare medium per label instructions using purified water. Sterilize as directed; if applicable, add MUG supplement aseptically after cooling.
2. Aseptically add 100 mL water sample to the test vessel containing the medium (or add medium to the sample, depending on format).
3. Incubate at 35–37 °C for 18–24 h.
4. Examine under ~365 nm UV in a dark environment. Record fluorescence (E. coli presumptive positive). Record any additional indicators (e.g., acid/gas) required by your method.
5. Perform confirmatory testing per your SOP (e.g., streak to selective agar, additional biochemical tests).

Most Probable Number (MPN) or enumeration (literature outline):

• Prepare serial dilutions of sample in sterile diluent.
• Inoculate replicate tubes/wells with defined volumes of medium.
• Incubate 35–37 °C for 24–48 h as specified.
• Score wells/tubes for fluorescence and other indicators; compute MPN with the appropriate statistical table/software.

Quality controls:

• Include known positive control (E. coli GUS+) and negative control (sterile water and/or non-GUS organism) each run.

All parameters above are general; defer to your validated method and the item’s CoA/Spec Sheet for exact volumes, times, and confirmatory steps.

Biological Roles

MMO-MUG Medium serves as a nutrient and indicator system for cultivating and detecting bacteria, particularly coliforms and Escherichia coli, in environmental and quality-control testing.

General biological context (literature):

• Nutritional support: Peptones, amino acids, carbohydrates, and mineral salts (typical in such media) provide carbon, nitrogen, and essential ions to support growth of target organisms.
• Enzymatic reporting: The MUG component functions as a fluorogenic substrate for β-glucuronidase (GUS). Many E. coli strains express GUS, which hydrolyzes MUG to release 4-methylumbelliferone (4-MU), a fluorescent molecule visible under long-wave UV. This enables rapid and sensitive detection without colony staining.
• Selectivity/differentiation: Selective agents (if present) suppress non-target flora, while indicator systems allow phenotypic differentiation (e.g., coliform fermentation indicators paired with MUG for E. coli). Specific agents for this item are not specified; consult the CoA/Spec Sheet.
• Physiology link: Detection relies on active metabolism and enzyme expression; incubation temperature, medium composition, and sample history affect expression of β-glucuronidase and thus fluorescence intensity.

Scope and limitations (literature):

• A small proportion of E. coli strains may be GUS-negative, leading to false negatives with MUG-only systems; conversely, some non-E. coli organisms can exhibit GUS activity, potentially causing presumptive positives. Confirmatory testing per your standard method is recommended.

Item-specific biological performance characteristics are not provided and should be verified with positive/negative controls and growth-promotion tests per laboratory QA.

Buffer Applications

Not typically applicable as a standalone buffering system. MMO-MUG Medium is a complete culture medium intended for microbial growth and indicator readout, not for buffering biochemical reactions.

General note (literature):

• Such media usually contain buffering components to maintain near-neutral pH during incubation, which preserves enzyme activity and indicator performance. Exact buffer identity and pH range for this item are not specified; refer to the CoA/Spec Sheet if your method requires defined buffering capacity.

Green Alternatives

As a water-based microbiological medium, MMO-MUG Medium is intrinsically more benign than many solvent-intensive analytical reagents. Sustainability considerations and alternatives should focus on preparation efficiency, waste minimization, and energy use.

Greener practice options (general, literature):

• Ready-to-use vs. in-house preparation:
  • Ready-to-use sterile formats can reduce autoclave cycles (energy/water), but may increase packaging waste and shipping mass.
  • Dehydrated media prepared on-demand minimize transport mass and can reduce expired waste if prepared in small batches.
• Sterilization strategy:
  • Optimize autoclave loading and cycle selection; avoid over-sterilization that degrades heat-labile indicators and wastes energy.
  • Where validated and allowed, membrane filtration sterilization of indicator supplements can preserve activity and lower energy.
• Waste management:
  • Segregate uninoculated media (non-biohazard) from inoculated cultures (biohazard). Treat inoculated waste via autoclave to enable safer downstream disposal, potentially reducing the need for chemical disinfectants.
• Water and plastic use:
  • Use calibrated volumes to avoid over-preparing media; switch to reusable glassware where compatible with your QA system to curb single-use plastics.

Alternatives context (literature):

• Other E. coli detection methods (e.g., defined substrate technologies, chromogenic agars) may offer shorter incubation or simplified readouts; trade-offs include cost, selective spectrum, and waste profile. Selection should align with method validation requirements and lab sustainability goals.

Pharmaceutical Uses

This product is for research use only (per Product Data) and is not intended for therapeutic or clinical diagnostic applications.

Relevant, non-clinical uses (literature):

• In pharmaceutical quality control laboratories, MUG-based media may be used in environmental monitoring or water system testing to detect coliforms/E. coli as part of facility hygiene programs. Adoption requires internal validation and alignment with compendial/house methods.

Item-specific pharmacopeial alignment, sterility assurance level, or validated method claims are not provided. For regulated use, qualify the medium within your quality system and consult the CoA/Spec Sheet for available performance data.

Physical Properties

• State/appearance: Not specified for this item; refer to CoA/Spec Sheet.
• pH (prepared medium): Not specified for this item; refer to CoA/Spec Sheet. (Typical neutral range for coliform media in literature: ~6.8–7.4; literature, not item-specific.)
• Solubility: Intended for preparation in water (general for culture media; literature). Item-specific solubility and preparation concentration: Not specified for this item; refer to CoA/Spec Sheet.
• Density, refractive index, viscosity: Not applicable/not specified for this item.
• Melting/boiling point: Not applicable to a complex aqueous medium or dehydrated blend.
• Osmolality (prepared): Not specified for this item; refer to CoA/Spec Sheet.
• UV/Fluorescence behavior (general, literature):
  • MUG-derived product 4-methylumbelliferone (4-MU) fluoresces blue under long-wave UV (~365 nm) after enzymatic cleavage by β-glucuronidase; this attribute underpins detection in MUG-containing media (literature). This is general background and not a specification of fluorescence intensity for this item.

Preparation notes (general, literature):

• Dehydrated media are typically dissolved in purified water to the label-indicated concentration and sterilized per instructions (autoclave or membrane filtration depending on heat stability of components). Specific parameters for MMO-MUG Medium are not provided here; follow the item label and CoA/Spec Sheet.

Because this product is a formulated mixture, conventional single-compound physical constants (MW, SMILES, InChI) do not apply.

Quality and Grades

• Grade/Purity (from Product Data): BioReagent.

What BioReagent typically denotes (general definition):

• BioReagent grade indicates suitability for biological research workflows, with attention to component consistency and performance in life science applications. While not equivalent to clinical diagnostic grade, BioReagent materials are produced to support reproducible lab results in microbiology, molecular biology, or cell biology settings.

Implications for MMO-MUG Medium:

• The designation suggests batch-to-batch consistency appropriate for microbial culture/detection workflows. However, item-specific performance metrics (e.g., pH of prepared medium, growth promotion tests, inhibitory balance) are not specified for this item; refer to CoA/Spec Sheet.
• No stabilizers, antibiotics, or supplements are listed in the Product Data. Presence/absence of such additives is not specified and should be verified on the CoA/Spec Sheet.

Documentation and lot traceability:

• For regulated or validated methods, retain the Certificate of Analysis for details such as manufacturing lot, recommended preparation instructions, and any growth-promotion or selectivity testing results.

Notes:

• This product is for research use only (per Product Data). It is not certified for clinical diagnostic use unless explicitly stated on accompanying documentation.
• If your method requires specific pharmacopeial conformity (e.g., ISO, EPA, or Standard Methods performance criteria), confirm alignment with method requirements using the CoA/Spec Sheet and internal qualification.

Reaction and Applications

This product is a microbiological medium, not a reagent for synthetic reactions. Its primary applications are in microbial detection and culture.

Use-cases (general, literature):

• Total coliform and E. coli detection: MMO-MUG-type media are commonly used for presence–absence or enumeration testing in water quality workflows. The “MUG” component refers to 4-methylumbelliferyl-β-D-glucuronide, a fluorogenic substrate cleaved by the β-glucuronidase (GUS) enzyme found in most E. coli strains, generating blue fluorescence of 4-methylumbelliferone under long-wave UV.
• Differential indication: Growth and metabolic activity produce visual or fluorescent signals, enabling differentiation between total coliforms and E. coli where the method specifies complementary indicators.
• Environmental monitoring: Surface water, drinking water, wastewater effluents, recreational waters, and process hygiene samples where detection of coliforms/E. coli provides a sanitary quality indicator (per literature methods).

Practical tips (general, not item-specific):

• Use aseptic technique throughout. Verify sample volumes and incubation temperatures/times per your validated method (e.g., 35–37 °C, typical 18–24 h; literature).
• For fluorescence readout, examine under ~365 nm UV in a dark environment; include known positive/negative controls to confirm performance.
• If using membrane filtration workflows, confirm compatibility of the medium with your membrane type/pore size according to the method.

Item-specific application claims are not provided in the Product Data. Refer to the CoA/Spec Sheet and your standard method for definitive instructions.

Reaction Conditions

Here, “reaction conditions” refers to microbiological culture conditions rather than chemical synthesis.

General culture conditions for MUG-based E. coli detection (literature, not item-specific):

• Preparation: Dissolve the medium at the label-indicated concentration in purified water. Sterilize as instructed for the specific formulation (autoclave or filter-sterilize). For heat-sensitive indicator supplements, aseptically add to cooled sterile base (~45–50 °C) if applicable. For this item, exact preparation is not specified; refer to the CoA/Spec Sheet.
• Inoculation: Add the defined sample volume (e.g., presence–absence tests often use 100 mL; enumeration formats may vary) using aseptic technique. Include positive (E. coli control strain) and negative controls.
• Incubation: Typically 35–37 °C for 18–24 h (literature). Some methods allow up to 48 h depending on sample matrix and target sensitivity.
• Detection: Examine under long-wave UV (~365 nm) in a dark environment; GUS-positive cultures emit blue fluorescence (4-MU). Record turbidity/gas formation or color change if the method integrates additional indicators.
• Confirmation: Due to potential GUS-negative E. coli or GUS-positive non-targets, perform confirmatory tests per your standard method (e.g., subculture to selective agar, oxidase testing, additional substrate assays).

Note: The above conditions are general guidance based on literature. Follow your validated method and the item’s CoA/Spec Sheet for authoritative conditions.

Safety and Handling

Safety information explicitly provided for this item:

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

General laboratory safety guidance for microbiological media (literature, not item-specific):

• Primary hazards: While many medium components are of low intrinsic hazard, the product supports microbial growth. Once inoculated, all materials (tubes, plates, pipette tips) should be treated as biohazardous and decontaminated (autoclave or validated chemical disinfectant) prior to disposal per institutional biosafety procedures.
• PPE: Laboratory coat, gloves (nitrile), and safety glasses. Use biological safety cabinet (Class II) where aerosol-generating steps are possible or when handling environmental samples with unknown bioburden.
• Incompatibilities: Avoid contact with strong oxidizing agents and reactive chemicals not compatible with organic nutrient mixes (general). For prepared media, avoid desiccation and contamination; keep containers closed.
• First aid (overview): In case of contact, rinse skin/eyes with water. If inhaled (e.g., powder dust), move to fresh air. If ingested, rinse mouth. Seek medical attention if symptoms persist. Defer to SDS for authoritative measures.
• Spill response: For powder, avoid dust formation; gently sweep with minimal disturbance, collect, and dispose according to local regulations. For inoculated liquid, cover with suitable disinfectant, allow adequate contact time, then absorb and dispose as biohazard.

Always consult the product-specific SDS for definitive hazard classification and handling instructions.

Solvent Selection

Not typically applicable. MMO-MUG Medium is designed to be dissolved in water for microbial culture.

General guidance (literature, not item-specific):

• Primary solvent: Purified water (e.g., ASTM Type I/II or equivalent) is used to prepare the medium at the label-indicated concentration.
• Avoid: Organic solvents, which can inhibit microbial growth or denature indicator substrates. High ionic strength waters can alter selectivity and buffering.
• Optional supplements: If your method requires antibiotics or additives, dissolve separately as directed by the method and aseptically add to cooled, sterile medium. For this specific item, any supplements or their concentrations are not specified; consult the CoA/Spec Sheet.

Comparison (contextual):

• Water-prepared MUG media vs. alcohol-based detection systems: aqueous media are preferred for maintaining viability and enzyme activity for β-glucuronidase-based detection.

For practical selection, focus on water quality and sterility rather than alternative solvents.

Storage and Reconstitution

• Storage conditions (from Product Data): Room temperature. Protect from contamination and moisture. Keep container tightly closed.
• Shipping: Shipped under normal conditions (from Product Data).

Reconstitution/preparation:

• Exact preparation instructions (e.g., grams per liter, sterilization method, pH targets) are not specified for this item; refer to CoA/Spec Sheet.
• General guidance (literature, not item-specific):
  • Use purified water. Dissolve the medium completely with gentle heating if necessary.
  • Sterilize according to the label. If any indicator or supplement is heat-sensitive, sterile-filter and add aseptically to cooled sterile base (~45–50 °C).
  • Dispense into sterile containers using aseptic technique to avoid pre-inoculation contamination.

Storage after preparation (general, literature):

• Store prepared medium in the dark at 2–8 °C to preserve indicator performance. Typical in-use shelf life ranges from days to weeks depending on formulation; for this item, stability is not specified—follow CoA/Spec Sheet and internal QC dating.
• Avoid repeated warming/cooling cycles; prepare volumes aligned to expected throughput.

Disposal:

• Uninoculated medium: dispose per local regulations for nonhazardous laboratory chemicals unless otherwise specified by the SDS.
• Inoculated medium: treat as biohazard; autoclave or disinfect before disposal per institutional biosafety procedures.

Structure and Identity

MMO-MUG Medium is a formulated, multi-component microbiological culture medium designed for detection and enumeration workflows. It is not a single, well-defined chemical substance.

• Composition type: Complex blend (nutrients, selective agents, indicator system). Exact formulation: Not specified for this item; refer to CoA/Spec Sheet.
• Analyte form: Prepared medium or dehydrated blend (unspecified). Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Functional elements (general, literature):
  • Growth-supporting peptones/mineral salts (typical for nutrient media)
  • Selectivity/differentiation agents for coliform/E. coli testing (MMO-MUG naming convention commonly denotes inclusion of the fluorogenic substrate 4-methylumbelliferyl-β-D-glucuronide, MUG, for β-glucuronidase detection; literature)
  • Buffering components to maintain near-neutral pH (literature)
• Molecular formula: Not applicable to mixtures.
• Molecular weight: Not applicable to mixtures.
• SMILES / InChI / InChIKey: Not applicable to mixtures; not specified for this item.
• 2D structure (descriptive): Not applicable; the product is a mixture without a single defined molecular structure.

Notes:

• MMO-MUG Medium is categorized under life-science research reagents and should be treated as a culture medium for microbial detection and differentiation. For exact lot-specific identity parameters (e.g., pH at 25 °C, total solids), consult the product’s CoA/Spec Sheet.

Synthetic Utility

Not applicable. MMO-MUG Medium is a microbiological culture medium and does not serve as a building block, reagent, or catalyst for organic synthesis.

For chemical synthesis needs, select reagents and solvents appropriate to the transformation of interest. Refer instead to the sections on Biological Roles, Reaction Conditions (culture), and Application Protocols for practical use of this medium.

Target Specificity

Not applicable to antigen/antibody or molecular targeting. This product is a culture medium rather than a biochemical probe with defined molecular selectivity documentation.

Contextual note (literature):

• MMO-MUG-type media are commonly used to detect organisms expressing β-glucuronidase, notably many strains of Escherichia coli, via a fluorogenic MUG reaction. This is general background and not a product-specific performance claim. Confirm target specificity using controls and confirmatory tests per your method.

Häufig gestellte Fragen

How should this product be stored?

Store at room temperature.