Sucrose Content Assay Kit (Resorcinol, Micro Method)

Cat. No.: S1515827

GRADE & PURITY BioReagent

Panoramica

Sucrose is the primary product of plant photosynthesis and the main form for sugar transport and storage. Therefore, determining sucrose content is of great significance for understanding plant sugar metabolism. Additionally, sucrose content serves as a crucial quality control indicator for products such as beverages, honey, preserved fruits, candies, and dairy products. This kit can detect sucrose content in plant samples. The principle involves first heating the sample with alkali to destroy reducing sugars. Subsequently, under acidic conditions, sucrose is hydrolyzed to produce glucose and fructose. The fructose then reacts with resorcinol to form a colored product, which exhibits a characteristic absorption peak at 480 nm.

Specifications

Specifiche e purezza

BioReagent

Grado

BioReagent

Applicazione

Cell Metabolism

Tipo di campione

Tessuti vegetali

Metodo di rilevamento

Colorimetric Method

Detection instrument

Microplate reader,Visible Spectrophotometer

Detection wavelength

482nm

Stoccaggio e spedizione

Condizioni di conservazione di stoccaggio

Store at 2-8°C,Protected from light

Spedito in

Wet ice

Stabilità e conservazione

Store at 2-8℃ for 6 months. Store in the dark.

Application Protocols

Detailed, step-by-step protocols, reagent preparation, and plate/tube layouts are Not specified for this item; refer to the kit insert supplied with the product for authoritative instructions.

General recommendations for successful execution (non-specific, for planning only):

• Calibrate the spectrophotometer/plate reader at the wavelength specified in the kit insert and verify pathlength if using microplates.
• Prepare a multi-point sucrose standard curve spanning the expected sample range.
• Process standards and samples in parallel with identical timing and temperature control.
• Include appropriate blanks (reagent and matrix blanks) to correct for background.

Because kits can differ in reagent concentrations, incubation temperatures/times, and λmax, always defer to the documentation accompanying SKU S1515827.

Biological Roles

This kit measures sucrose, a central carbohydrate in biology. The content below provides general biochemical context (literature) and is not specific to the kit’s composition.

• Sucrose function: A non-reducing disaccharide composed of glucose (α-D-Glc) and fructose (β-D-Fru) linked via α(1→2)β. In plants, sucrose is the primary translocated sugar from source (photosynthetic tissues) to sink organs (roots, fruits, seeds).
• Metabolic pathways: Hydrolysis by invertases (β-fructofuranosidases) or sucrose synthase yields fructose and glucose, feeding glycolysis, pentose phosphate pathway, and biosynthetic routes. In microbes and animals, dietary sucrose is cleaved by sucrase–isomaltase in the intestine (biochemistry background).
• Signaling roles: In plants, sucrose and its cleavage products act as signaling molecules influencing gene expression, stress responses, and developmental processes (e.g., via trehalose-6-phosphate crosstalk; literature).
• Storage/compatible solute: Sucrose contributes to osmotic balance and stress tolerance, accumulating under drought, salinity, and cold (plant physiology literature).
• Analytical implication: Because sucrose is non-reducing, methods targeting reducing ends (e.g., DNS) under-report unless hydrolysis occurs. Resorcinol-based approaches take advantage of fructose reactivity after acid hydrolysis, providing specificity aligned with sucrose-derived ketose formation.

Relevance to assay selection:

• Samples rich in free fructose (e.g., certain fruit juices) may yield positive signal after acid treatment independent of sucrose; specificity must be managed through calibration and, if needed, enzymatic differentiation.
• Plant extracts contain pigments and phenolics that can interfere optically or chemically; clarification and matrix-matched controls improve accuracy.

Buffer Applications

Not typically applicable. This product is an analytical colorimetric kit rather than a buffering agent or buffer system. Use the kit’s specified reagents and diluents per the kit insert. If samples must be prepared in buffers, ensure they are compatible with strong acid treatment and heating (literature cautions):

• Avoid high concentrations of Tris, phosphate, or carbonate that can neutralize acids or alter reaction conditions.
• Keep detergent and solvent levels low to prevent phase separation or interference with color development.

For precise compatibility and allowable buffer compositions for standards and samples, refer to the kit documentation.

Green Alternatives

Context: The resorcinol micro-method relies on strong mineral acid and heating, with phenolic chemistry. While effective and widely used, it carries environmental, safety, and energy considerations. Below is a balanced, literature-based comparison of alternatives.

• Enzymatic sucrose assays (literature):

  • Pros: Aqueous, near-neutral pH; milder temperatures; high specificity for sucrose via invertase/β-fructofuranosidase with subsequent glucose quantification (e.g., GOPOD). Reduced hazardous waste.
  • Cons: Cost of enzymes, sensitivity to preservatives/solvents, cold-chain requirements, potential matrix enzyme inhibitors.

• Total carbohydrate assays (anthrone, phenol–sulfuric acid; literature):

  • Pros: Simple, broad applicability, robust chromophores.
  • Cons: Use concentrated sulfuric acid and/or phenol; less specific for sucrose; hazardous reagents; greater waste treatment burden.

• HPLC/IC with refractive index or pulsed amperometry (literature):

  • Pros: No derivatization; direct resolution of glucose, fructose, sucrose; minimal hazardous reagents; high specificity and wide dynamic range.
  • Cons: Instrument-intensive; mobile phases may still require acids/buffers; higher capital and maintenance demands.

Sustainability tips when using resorcinol methods (general):

• Miniaturize to microplate or microcuvette formats to reduce reagent volumes and waste.
• Implement heat blocks with lids/insulation to improve energy efficiency.
• Segregate and neutralize acidic waste; explore on-site neutralization to reduce transport.
• Use secondary containment and light protection to extend reagent life, reducing discard frequency.

Selection should balance data quality, safety/environmental impacts, available instrumentation, and sample matrix constraints.

Pharmaceutical Uses

Scope: Non-clinical, research/QC context only. This kit is for research use only (per Product Data) and is not intended for diagnostic or therapeutic applications.

Use cases in pharmaceutical/bioprocess labs (general, literature):

• Excipient quantitation: Sucrose is widely used as a stabilizer/cryoprotectant in protein formulations, lyophilization cakes, and vaccines (as an excipient). Colorimetric sucrose assays can support research-scale formulation development and in-process checks.
• Raw material screening: Assess sucrose content/purity in incoming materials for research use, including syrups or compounded buffers containing sucrose.
• Cleaning verification (research): Detect residual sucrose in equipment rinse samples where sucrose-containing solutions were handled.

Methodological notes:

• Matrix considerations: Proteins, surfactants, and buffers common in formulations can affect acid hydrolysis and chromophore yield; appropriate dilutions and matrix spikes are recommended.
• Alternatives: Enzymatic sucrose assays or chromatographic methods (HPLC/IC-RI) are often preferred for regulated QC due to specificity and method robustness; use this colorimetric approach for screening or development work where its speed and simplicity are advantageous.

Documentation: Establish in-house method performance (linearity, accuracy, precision, robustness) for your specific matrices and instruments. For any cGMP-adjacent use, develop and validate per ICH/USP guidance using appropriate reference standards and controls.

Physical Properties

Item-specific physical properties (bp, mp, density, refractive index, pKa, logP, solubility) are not defined for a multi-component kit and are not provided in the Product Data.

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Physical form: Typically solutions and/or solids packaged as separate vials (general for assay kits); exact details not specified for this item.

Literature/contextual properties relevant to the assay chemistry (for method understanding only):

• Chromophore λmax: Resorcinol–ketose condensation products in strong acid often display absorbance in the visible range near 480–520 nm (literature), with precise wavelength dependent on acid strength, temperature, and formulation.
• Reaction medium: Concentrated hydrochloric acid or other strong mineral acid is commonly employed (literature) to dehydrate ketoses and promote condensation with resorcinol.
• Temperature dependence: Color development typically requires heating (literature), often in the range of ~80–100 °C for minutes to tens of minutes, depending on protocol.

Important: None of the above constitute specifications for this particular product. For exact property values, stability profiles, and component details, consult the kit insert and component SDS/labels. If you require precise wavelengths, incubation temperatures, linear ranges, or solution compositions for this catalog item, please refer to the manufacturer documentation provided with the kit.

Quality and Grades

• Supplied grade: BioReagent (per Product Data).

What BioReagent typically implies (general):

• Suitability for common biochemical and life science workflows, with controlled levels of common impurities relevant to biochemical assays.
• Emphasis on consistency, lot-to-lot performance, and documentation suitable for research use (not for clinical or diagnostic use).

Item-specific notes:

• This is a sucrose content assay kit leveraging the resorcinol micro-method. Performance criteria such as sensitivity, linear range, and interferences are determined by formulation and component quality; these parameters are Not specified for this item; refer to CoA/Spec Sheet/Kit Insert for validation data.
• Stabilizer(s), preservatives, or component concentrations: Not specified for this item.
• Light protection is explicitly required by the storage statement, indicating one or more photo-labile components.

Best practices for quality assurance in use:

• Verify calibration using the provided or freshly prepared sucrose standards (if included; consult kit insert). Confirm linearity and repeatability with a multi-point standard curve.
• Include quality controls (matrix-matched samples and spikes) to assess recovery and potential matrix effects.
• Document instrument wavelength accuracy and cuvette/pathlength integrity, especially for microplate vs. cuvette formats.

For regulatory or QC environments (general): While BioReagent grade supports research/QC method development, method qualification/validation parameters (LOD/LOQ, accuracy, precision, robustness) should be established in-house using your instrument and sample matrices.

Reaction and Applications

Use case overview: Colorimetric quantification of sucrose by the resorcinol micro-method. Suitable for research, method development, and QC of sucrose-containing samples. For research use only (per Product Data).

Assay principle (literature):

• Hydrolysis: Sucrose is acid-hydrolyzed into glucose and fructose.
• Chromogenesis: Under strong acid and heat, ketoses (fructose) dehydrate to 5-hydroxymethylfurfural (HMF)-like intermediates that condense with resorcinol, yielding a colored complex with visible absorbance (commonly near 480–520 nm depending on conditions).
• Quantification: Compare sample absorbance to a sucrose calibration curve prepared and processed identically.

Applications (general):

• Food and beverage analysis (e.g., soft drinks, juices, syrups) to estimate sucrose content.
• Plant physiology and carbohydrate partitioning studies (extracts from leaves, phloem exudates) where sucrose is the transport carbohydrate.
• Formulation and process QC for research-scale products using sucrose as an excipient or cryoprotectant.

Practical considerations (literature):

• Interferences: Free ketoses (e.g., fructose) and strongly colored or reducing substances can bias results. Matrix dilutions, blanks, or enzymatic pretreatments may be needed for specificity.
• Linearity/sensitivity: Micro-methods often support low µg amounts per well/tube; establish an in-house calibration range appropriate to instrument pathlength and kit formulation.
• Precision: Maintain consistent timing, temperature, and acid concentration; pre-warm reagents and use matched incubation conditions across standards and samples.
• QC checks: Include reagent blank, matrix blank, and at least 5–7 calibration points covering the expected range.

Always follow the kit insert for the definitive workflow, reagent volumes, and timing for this item.

Reaction Conditions

Exact operating conditions for this specific kit are Not specified for this item; refer to the kit insert. The points below summarize typical, literature-based conditions for the resorcinol micro-method for sucrose determination.

• Reagents: Resorcinol in strong mineral acid (commonly hydrochloric acid) and aqueous sucrose standards/samples.
• Hydrolysis and color development: Heating is generally required. Literature reports incubations around 80–100 °C for ~10–30 minutes, with timing strictly controlled for reproducibility.
• Detection: Measure absorbance of the developed chromophore in the visible region; λmax commonly reported near 480–520 nm depending on formulation and acid strength. Use matched blanks.
• Calibration: Prepare a multi-point sucrose calibration curve treated identically to samples. Ensure the linear range brackets expected sample concentrations; micro-methods often target low µg levels per measurement.
• Vessels: Microtubes or microplate wells compatible with strong acids and heat. If using capped tubes, avoid over-tightening to prevent pressure buildup.
• Interference management: Colored/turbid matrices can require clarification (centrifugation/filtration) and matrix blanks. Free fructose elevates signal; consider enzymatic differentiation if required.
• Temperature control: Use a calibrated dry block or water bath with verified set-point accuracy and uniformity; pre-equilibrate reagents.
• Timing: Start timing upon sample exposure to hot acid; process standards and samples in consistent batch sizes to minimize drift.

These guidelines are provided for contextual understanding only. Follow the provided kit documentation for authoritative volumes, timings, and wavelengths.

Safety and Handling

• GHS/Signal word/H-statements/Pictograms: Not specified for this item; refer to the SDS for each kit component.
• Storage: Store at 2–8 °C, protected from light (per Product Data). Keep tightly closed. Avoid moisture ingress and temperature excursions.
• Shipping: Ships on wet ice (per Product Data).
• General hazards (literature, typical for resorcinol/strong-acid sugar assays): Components may include strong acids (corrosive), phenolic compounds (harmful if swallowed or in contact with skin), and dyes/indicators (irritants). Heat is used for color development—risk of burns and pressure buildup in sealed tubes.

Handling guidance (general best practice; defer to SDS/kit insert):

• PPE: Wear lab coat, chemical-resistant gloves, eye protection, and work in a fume hood when heating acidic reagents.
• Incompatibilities: Avoid contact with bases, oxidizers, and reactive metals when handling strong acids. Do not mix waste streams containing oxidizers and organics without neutralization/segregation.
• Procedural cautions: When heating acid mixtures in capped tubes, use vented caps or loosen caps to prevent pressure buildup. Protect light-sensitive reagents from ambient light to preserve stability.
• First aid (overview; follow SDS): Eye/skin contact with acids—immediate irrigation for ≥15 min and seek medical attention. Inhalation of vapors—move to fresh air, seek medical attention if symptoms persist. Ingestion—do not induce vomiting; seek medical attention.
• Waste: Neutralize acidic wastes appropriately; collect phenolic/organic wastes as hazardous per institutional and local regulations.

Always consult the SDS and kit insert for definitive safety information and component-specific guidance.

Solvent Selection

This is an assay kit rather than a solvent. Solvent selection pertains to the assay medium used for color development and sample preparation.

• Applicability: The resorcinol micro-method (literature) typically employs an aqueous strong acid medium (e.g., HCl) to hydrolyze sucrose and dehydrate ketose intermediates. Water is the matrix for standards and samples; organic solvents are generally unnecessary and can interfere.

General guidance (literature):

• Polarity: The color-forming reaction proceeds in highly polar, protic, strongly acidic media. Maintaining the specified acid concentration is critical for sensitivity and selectivity.
• Miscibility: Aqueous samples are directly compatible. High levels of co-solvents (alcohols, DMSO) can alter reaction kinetics and color yield; keep total organic content minimal (<5% v/v is often advisable) unless the kit protocol allows otherwise.
• Sample cleanup: For complex matrices (e.g., syrups, beverages, extracts), dilution in water and clarification/filtration can reduce turbidity and minimize scattering.

Comparison (selection rationale; literature):

• Resorcinol-HCl vs. anthrone-sulfuric acid: Resorcinol is more selective for ketoses (via Seliwanoff-type chemistry), offering better discrimination when targeting sucrose-derived fructose. Anthrone is broadly responsive to total carbohydrates.
• Enzymatic alternatives: Enzymatic sucrose assays (invertase + mutarotase + glucose oxidase peroxidase) are aqueous and milder; choose when matrix acids/bases or heat-sensitive components preclude hot acid conditions.

Refer to the kit insert for the exact solvent system and allowable sample preparation solvents for this product.

Storage and Reconstitution

• Storage conditions (per Product Data): Store at 2–8 °C. Protect from light. Keep components tightly capped to minimize evaporation and contamination.
• Shipping: Shipped on wet ice.
• Stability: Shelf life and post-opening stability are Not specified for this item; refer to CoA/Spec Sheet/Kit Insert.
• Reconstitution/preparation: Not specified for this item. Some kits provide concentrated reagents or dry standards requiring dilution; follow the kit insert for exact diluents and volumes. Use high-purity water (e.g., ≥18 MΩ·cm) for reagent preparation when instructed.
• Handling tips (general):
  • Allow reagents to equilibrate to room temperature before opening to minimize condensation.
  • Mix thoroughly after reconstitution; verify complete dissolution of any solid standards.
  • Protect light-sensitive reagents by minimizing exposure (use amber vials or wrap in foil) and return promptly to cold storage after use.
  • Avoid repeated freeze–thaw unless explicitly permitted by the kit; aliquot if needed per kit guidance.
• Instrument readiness: Warm up spectrophotometer/plate reader and validate wavelength accuracy with suitable standards if available.

For definitive storage durations, reconstitution recipes, and in-use stability, consult the kit insert and component labels provided with SKU S1515827.

Structure and Identity

This product is an analytical kit containing multiple components for a colorimetric determination of sucrose using the resorcinol micro-method. As a kit/mixture, a single molecular identity does not apply.

• Item type: Sucrose Content Assay Kit (Resorcinol, Micro Method); SKU S1515827
• Components: Not specified for this item; refer to CoA/Spec Sheet/Kit Insert. Typical resorcinol methods (literature) include resorcinol reagent in strong acid (e.g., HCl) and sucrose standards.
• Molecular formula: Not applicable to kits composed of multiple reagents.
• Molecular weight: Not applicable to kits; individual reagents have their own values (not provided in Product Data).
• SMILES/InChI/InChIKey: Not applicable to multi-component kits.
• Structural features (general, literature): The colorimetric reaction is based on dehydration of ketoses under strong acid to yield furfural derivatives that condense with resorcinol, giving a chromophore measurable in the visible range. In sucrose assays, sucrose is hydrolyzed to glucose and fructose; fructose (a ketose) drives the chromogenic reaction.
• 2D structure description (general): Resorcinol is a benzene ring bearing two hydroxyl groups in meta positions (1,3-dihydroxybenzene). Under assay conditions, furfural-like intermediates form conjugated adducts with resorcinol, producing a colored species.

Notes:

• Because this is a kit, structural identifiers for a single compound are not meaningful. Any such identifiers must be taken from each component’s SDS/label.
• Use the kit insert for the exact composition and identities of included reagents and standards.

Synthetic Utility

Not typically applicable. This product is an analytical assay kit, not a synthetic building block or reagent for chemical transformations.

If your objective is synthetic carbohydrate chemistry or derivatization:

• Consider using pure sucrose or monosaccharide standards for reactions such as glycosylations, protection/deprotection studies, or Maillard-type model reactions.
• The resorcinol color reaction is an analytical endpoint rather than a preparative synthetic transformation.

For synthesis-focused needs, please browse dedicated reagents, catalysts, and solvents in our catalog that are designed for chemical synthesis rather than colorimetric analysis.

Target Specificity

Not applicable. This is not an antibody, probe, or capture assay targeting a biomolecular epitope. The kit quantifies sucrose chemically via the resorcinol color reaction following acid hydrolysis.

• Antigen/epitope/clone/isotype/species reactivity: Not applicable to this product.

For analytical specificity toward sucrose vs. other carbohydrates, see Reaction & Applications and Reaction Conditions for literature-based discussion of selectivity and potential interferences.