An internationally recognized testing institution, assisting enterprises in achieving technological advancement.
ZHONGXI Testing has obtained inspection qualification certifications from multiple countries and regions worldwide. We possess a senior testing team and advanced testing methods, providing independent, impartial, and professional third-party verification services for global carbon projects.
Certified by multiple international standards such as CNAS, VCS, and GS, with reports universally applicable worldwide.
Covering 140+ countries and regions, it supports on-site detection and remote verification in multiple languages.
Adopt standard experimental methods to ensure accurate and reliable data.
Agarolytic enzymes—including α-agarase, β-agarase, and α-neoagarobiose hydrolase—catalyse the hydrolysis of agar, a galactan polysaccharide derived from red algae, into bioactive oligosaccharides such as neoagaro-oligosaccharides and agaro-oligosaccharides. These enzymes play pivotal roles in marine carbon cycling, and their biotechnological applications span functional food production, cosmetic ingredient development, and drug delivery systems. Accurate and sensitive detection of agarase activity, along with the characterisation of its kinetic parameters, substrate specificity, and stability, is fundamental to strain screening, bioprocess optimisation, and product quality assurance. Our specialised detection platform provides a fully validated suite of biochemical, chromatographic, and mass spectrometric assays tailored to agarolytic enzymes from marine bacteria, fungi, and recombinant sources, delivering the high-precision, actionable data that clients require for research, development, and regulatory compliance.

Clients seeking agarolytic enzyme detection services are typically driven by a range of strategic objectives. In marine biotechnology and microbial screening, the primary need is to quantify agarase activity to identify and characterise novel agar-degrading microorganisms from environmental samples, or to assess the potency of engineered strains. In functional food and nutraceutical development, monitoring enzyme activity ensures consistent production of prebiotic oligosaccharides with desired degree of polymerisation and bioactivity. In biocatalysis and enzyme engineering, detailed kinetic parameters (Km, Vmax, kcat) and substrate specificity are essential for optimising reaction conditions and for evaluating mutant libraries. In quality control of enzyme preparations, verifying the specific activity, purity, and stability of agarase batches is critical for commercial products. In regulatory submissions, comprehensive data on enzyme activity and product composition are required for novel food ingredient approvals. Our service is specifically designed to address these needs with scientific rigour, providing clients with a complete functional and molecular fingerprint of their agarolytic enzyme products.
Our analytical platform comprises four interconnected modules that collectively deliver a comprehensive evaluation of agarolytic enzyme quality and performance. The Activity Quantification Module employs a range of validated assays, including a colorimetric reducing sugar assay (using DNS or the Nelson-Somogyi method) with agarose or agar as substrate, as well as a fluorescence-based assay using a labelled oligosaccharide substrate for enhanced sensitivity. We determine the specific activity (U/mg protein) with precision within ±2% RSD and a limit of detection (LOD) as low as 0.001 U/mL. For detailed kinetic characterisation, we calculate Michaelis-Menten parameters for the primary substrate (agarose) and for various oligosaccharide substrates, as well as inhibition constants for potential inhibitors, with 95% confidence intervals typically within ±5%. The Product Profiling Module uses high-performance thin-layer chromatography (HPTLC) and ultra-high-performance liquid chromatography with charged aerosol detection (UHPLC-CAD) or MS detection to resolve and quantify the oligosaccharide products, providing degree of polymerisation (DP) distribution and reaction endpoint profiles with LOQs of 0.1 µg/mL. The Purity and Structural Module uses SDS-PAGE with silver or Coomassie staining, size-exclusion chromatography (SEC-HPLC), and capillary electrophoresis (CE) to assess purity and detect aggregates or fragmentation. We also perform intact mass analysis by ESI-TOF MS to confirm molecular weight and LC-MS/MS for peptide mapping and identification of post-translational modifications. The Stability and Formulation Module subjects the enzyme to accelerated aging conditions (temperatures from 4°C to 50°C, pH 4–9, and various ionic strengths) and monitors residual activity, aggregation, and product profile changes over time. Using Arrhenius modelling and deactivation kinetics, we predict shelf-life and identify critical degradation pathways (e.g., deamidation, oxidation, proteolysis). All modules are validated with certified reference agarase standards (e.g., from Zobellia galactanivorans or recombinant E. coli) and include rigorous quality controls (system suitability, blank subtraction, and replicate analyses).
Our platform consistently delivers performance that surpasses typical industry and academic standards. In activity assays, we achieve signal-to-noise ratios > 200:1 at the LOD, and our kinetic fitting software uses global non-linear regression to provide precise estimates of Km and Vmax, with residual errors < 3%. For product profiling, our UHPLC-CAD method resolves oligosaccharides up to DP 15 with baseline separation and retention time reproducibility < 0.2% RSD. In purity analysis, our SEC-HPLC method resolves monomer, dimer, and aggregates with peak area precision < 1%. In stability studies, we apply accelerated degradation models that account for both first-order and autocatalytic pathways, providing robust predictions of half-life (t1/2) and activation energy (Ea). Additionally, we offer differential scanning calorimetry (DSC) to determine melting temperature (Tm) and enthalpy change (ΔH), which are critical indicators of conformational stability. For clients requiring detailed structural characterisation, we provide X-ray crystallography (where feasible) and molecular docking simulations to map substrate binding and catalytic mechanisms. This multi-layered approach ensures that our clients receive not only a simple activity value but a comprehensive understanding of the enzyme's molecular integrity, substrate specificity, and stability under process-relevant conditions.
Our service offers several unique benefits that directly address client challenges. First, we have developed matrix-specific sample preparation protocols for a wide variety of agarase sources—including crude culture supernatants, purified enzyme solutions, immobilised preparations, and formulated products—that effectively remove interfering polysaccharides and phenolic compounds while preserving enzymatic activity, achieving recoveries > 92% for all tested matrices. Second, we maintain a comprehensive reference library of known agarase families (GH16, GH86, GH50, GH118) and their characterised product profiles, enabling rapid identification of enzyme type and prediction of oligosaccharide yields. Third, we offer a rapid screening service using a microplate-based DNS assay that provides semi-quantitative activity data within 2 hours of sample receipt—ideal for high-throughput screening of microbial isolates or mutant libraries. Fourth, our customised product profiling studies can determine the oligosaccharide composition under various reaction conditions (pH, temperature, substrate concentration) and provide statistically robust recommendations for process optimisation to achieve desired DP distributions. Fifth, we provide integrated data interpretation that links enzyme activity, product profile, and stability to industrial performance metrics (e.g., oligosaccharide yield, reaction time, shelf-life), enabling clients to predict full-scale performance without extensive pilot trials. Sixth, all our methods comply with ICH Q2(R1), AOAC, and ISO 17025 guidelines, and we supply full validation dossiers (specificity, linearity, accuracy, precision, LOD, LOQ, robustness) along with detailed SOPs, ensuring that our data are readily accepted by regulatory authorities and customers. Our team of enzymologists, carbohydrate chemists, and bioprocess engineers provides consultative interpretation, helping clients to translate analytical findings into actionable improvements—for example, recommending optimal pH and temperature for maximal oligosaccharide yield, identifying heat-labile variants, or designing effective stabilisation strategies.
Our reporting transforms analytical data into strategic operational and scientific knowledge. We deliver a comprehensive final report that includes: (i) an executive dashboard with key metrics (specific activity, Km, Vmax, DP profile, purity %, shelf-life estimate) presented as concise scorecards; (ii) a detailed analytical section containing raw data, calibration curves, chromatograms, and kinetic fits; (iii) a statistical comparison of samples against reference standards or historical batches, with p-values and confidence intervals; and (iv) an interpretive narrative that contextualises the results—for example, explaining how a shift in product DP distribution indicates a change in enzyme mode of action (endo vs. exo), or how a low level of protease contamination could lead to gradual activity loss. For clients with multiple batches or reaction conditions, we provide multivariate analysis (PCA, PLS-DA) to identify critical quality attributes and to guide process optimisation. We also offer predictive models that estimate oligosaccharide yield or reaction kinetics based on initial enzyme characteristics and process parameters, enabling proactive control of production runs. All raw data files (e.g., .xlsx, .raw, .cdf) are supplied to ensure full transparency and re-analysis capability.
The versatility of our agarolytic enzyme detection service spans a wide range of sectors. In marine biotechnology and microbial ecology, our assays support the discovery and characterisation of novel agar-degrading microorganisms and their enzymes. In functional food and nutraceutical development, we ensure consistent production of prebiotic agar-oligosaccharides with defined bioactivity. In cosmetic and pharmaceutical formulations, our product profiling verifies the purity and composition of agarose-derived ingredients. In enzyme manufacturing, our purity and stability testing ensure product reliability and regulatory compliance. In academic research, our detailed kinetic and structural data support studies on enzyme mechanism, evolution, and protein engineering. In process scale-up, our stability and product profile data guide the design of efficient bioreactors. Our ability to tailor the analytical package to the specific enzyme type, application, and regulatory framework ensures that we serve both small research groups and large industrial enterprises with equal rigor and responsiveness.
We are dedicated to advancing agarolytic enzyme analytics through continuous technological improvement. Our current R&D includes the development of lab-on-a-chip microfluidic systems for real-time activity and product profiling, and the application of machine learning algorithms to predict enzyme performance from primary sequence and structural features. We actively participate in inter-laboratory proficiency testing for enzyme activity and carbohydrate analysis, and we contribute to the development of standard reference materials for agarolytic enzymes. Our quality management system is ISO 9001 and ISO 17025 certified, and we follow GLP for all regulatory studies. We offer flexible engagement models—from single-sample analysis to multi-year collaborative projects—with dedicated project managers, volume discounts, and priority handling for time-sensitive samples. Our global logistics provide specialised shipping kits (with stabilising buffers and temperature control) to preserve enzyme activity during transit. Turnaround times range from 2 business days for rapid activity screening to 12 business days for comprehensive kinetic, product profiling, and stability assessment. We maintain open communication, providing preliminary results upon request and final reports with expert commentary. Our success is measured by the confidence our clients have in their products and processes. We invite you to partner with us to unlock the full potential of your agarolytic enzyme-based technologies.
In summary, our agarolytic enzyme detection service delivers a comprehensive, precise, and application-oriented analytical solution that integrates activity quantification, product profiling, purity assessment, and stability evaluation. By combining advanced instrumentation with deep expertise in carbohydrate enzymology, we empower our clients to ensure product quality, optimise bioprocesses, and accelerate innovation in the rapidly expanding field of marine-derived bioactives. We look forward to supporting your agarase analysis needs with our state-of-the-art analytical platform.