Analytical and Quality Assurance Services

Analytical and Quality Assurance Services

An internationally recognized testing institution, assisting enterprises in achieving technological advancement.

Reasons for choosing our testing services

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.

Internationally recognized authority

Internationally recognized authority

Certified by multiple international standards such as CNAS, VCS, and GS, with reports universally applicable worldwide.

Global service capability

Global service capability

Covering 140+ countries and regions, it supports on-site detection and remote verification in multiple languages.

Professional experimental methods

Professional experimental methods

Adopt standard experimental methods to ensure accurate and reliable data.

Comprehensive Analytical and Quality Assurance Services for Schizochytrium Biomass and DHA Oil Production

Schizochytrium is a genus of marine heterotrophic protists that has gained immense commercial importance as a primary source of docosahexaenoic acid (DHA), an omega-3 long-chain polyunsaturated fatty acid essential for human brain development, cardiovascular health, and inflammatory regulation. The industrial cultivation of Schizochytrium for DHA-rich oil production demands rigorous quality control across every stage—from strain selection and fermentation monitoring to downstream processing and final product certification. Our specialized detection platform offers a comprehensive suite of analytical services tailored to Schizochytrium biomass and its derived oils, delivering high-precision data that empower clients to optimize yield, ensure product safety, meet label claims, and comply with global regulatory standards.

Analytical and Quality Assurance Services

Scientific and Industrial Rationale for Schizochytrium Analysis

Clients seeking analytical services for Schizochytrium are typically motivated by a range of strategic objectives. In fermentation process development and monitoring, accurate quantification of biomass yield, lipid content, and DHA titer is critical for maximizing productivity and identifying optimal harvest times. In quality control of final products, verifying the DHA concentration, oxidative stability, and absence of contaminants (e.g., heavy metals, environmental pollutants, or residual solvents) is mandatory to meet food, feed, and pharmaceutical safety standards. In strain improvement and research, detailed lipidomic and metabolomic profiling supports the selection of high-performance strains and the elucidation of metabolic pathways. Our service is meticulously designed to address these diverse needs, delivering actionable data that are directly applicable to production, regulation, and research.

Integrated Analytical Pipeline for Holistic Schizochytrium Characterization

Our analytical platform is organized into five interconnected modules that collectively provide a comprehensive evaluation of Schizochytrium samples. The Biomass and Proximate Analysis Module uses gravimetric and NIR-based methods for total solids, ash, moisture, and crude protein (Kjeldahl), delivering reproducibility within ±2%. The Lipid Extraction and Quantitation Module employs pressurized solvent extraction (ASE) or Folch extraction to recover total lipids, followed by gravimetric quantitation with recoveries of 96–103% and RSD < 2%. The Fatty Acid Profile Module uses UHPLC-MS/MS and GC-FID for detailed fatty acid methyl ester (FAME) analysis, achieving baseline separation of over 35 fatty acids including DHA, EPA, and important saturated and monounsaturated species, with LOQs as low as 1 µg/mL and linearity over four orders of magnitude. The Purity and Contaminant Module screens for heavy metals (ICP-MS) with sub-ppb detection limits, residual solvents (GC-HS), pesticides (GC-MS/MS), and mycotoxins (LC-MS/MS), ensuring compliance with EPA, FDA, and EU regulations. The Stability and Oxidative Integrity Module performs accelerated oxidation studies (OSI), peroxide value (PV), and anisidine value (AV), providing shelf-life predictions and kinetic degradation parameters with 95% confidence intervals. All modules are validated with certified reference materials and include rigorous internal controls to ensure data integrity.

Unmatched Analytical Sensitivity, Specificity, and Structural Coverage

Our platform routinely achieves performance metrics that set new industry benchmarks. In fatty acid profiling, we identify and quantify cis/trans isomer-specific DHA and other PUFAs, with inter-day precision < 3% RSD. The UHPLC-MS/MS method uses isotopically labelled internal standards for absolute quantitation, eliminating matrix effects. For oxidative stability, our Rancimat system provides induction times at 110°C with coefficient of variation < 2%, and our accelerated shelf-life modeling (Arrhenius-based) delivers predicted shelf-life with ±10% accuracy. Additionally, we offer total oil profiling by high-temperature GC to monitor for and identify unexpected or potentially harmful lipid species. Our total contaminant screening covers over 200 analytes in a single GC-MS/MS run, ensuring complete chemical safety evaluation.

Distinctive Advantages of Our Schizochytrium Analytical Service

Our service is distinguished by several unique features that directly address client challenges. First, we provide species-optimized protocols for Schizochytrium that account for its tough cell wall and high oil content, ensuring efficient extraction and accurate results. Second, we maintain a comprehensive reference oil database for benchmarking, enabling rapid detection of deviations from expected profiles. Third, we offer a rapid screening service using FTIR-ATR spectroscopy that delivers semi-quantitative DHA and total oil estimates within 30 minutes of sample receipt. Fourth, our customised process optimization support includes statistical design of experiments (DoE) to correlate fermentation parameters with final oil quality. Fifth, we provide full regulatory documentation for feed and food applications, including 24-month stability study reports and certificates of analysis (CoA) compliant with ISO 17025, GMP, and EU Novel Food regulations.

Comprehensive Data Integration, Modeling, and Reporting

Our reporting provides a complete quality dossier for each sample. We deliver a certificate of analysis with DHA content, fatty acid profile, contaminant status, and stability data, alongside detailed chromatograms, mass spectra, and OSI graphs. For multi-sample projects, we provide statistical summaries, trend analysis, and predictive shelf-life models based on the full dataset. All raw data files are provided to ensure full transparency.

Broad Applications Across the DHA Production Value Chain

Our services support clients from strain development through to the final product. In fermentation R&D, they guide medium optimization and harvest timing. In production quality control, they ensure batch-to-batch consistency and regulatory compliance. In product development for infant formula, supplements, and aquaculture feed, they validate nutritional labels and safety. In research into DHA metabolism, they provide the detailed chemical data needed for scientific publications.

Commitment to Innovation, Quality, and Collaboration

We invest continuously in method development, including microscale lipid extraction and machine learning for predictive quality. Our quality management is ISO 9001 and ISO 17025 certified, and we adhere to GMP and GLP standards. We offer flexible service agreements, global sample logistics, and typical turnaround times of 5–10 business days. Our team of lipid chemists, microbiologists, and regulatory experts provides dedicated support, helping clients interpret results and refine their processes.

In summary, our Schizochytrium analytical service delivers a complete, precise, and regulatory-ready solution that integrates biomass, lipid, fatty acid, purity, and stability assessment. By combining state-of-the-art instrumentation with deep expertise in marine biotechnology, we empower our clients to achieve superior product quality and accelerate their market success. We look forward to supporting your Schizochytrium analysis needs.

Submit detection request

Fill in the information to obtain a professional testing plan