Quantitative Assay & Potency Determination
Aprofood is an expert in the analysis of peony-derived materials. We have mastered advanced analytical techniques such as chromatography, mass spectrometry, spectroscopy and elemental analysis to accurately quantify the nutrients and active compounds in peony pollen, helping our clients verify product quality, standardize batches and support product development and labeling.
Why Quantitative Analysis is Important for Peony Pollen?
Peony pollen is a nutrient-rich material that contains proteins, amino acids, fatty acids, flavonoids, polysaccharides, vitamins and trace elements. However, the content of these components varies with species, variety, geographical origin, harvest period and processing methods. For example, studies on tree peony pollen have established methods based on post-column derivatization cation-exchange chromatography, gas chromatography-mass spectrometry in selected ion monitoring mode (GC-MS-SIM) and inductively coupled plasma mass spectrometry (ICP-MS) to determine amino acids, fatty acids and trace elements, providing a technical basis for further research on peony pollen. Quantitative assay and potency determination help to:
- Verify the content of nutrients and active compounds in raw materials and finished products
- Evaluate the quality differences between varieties, origins and batches
- Support standardization and quality specifications of peony pollen products
- Provide data for product labeling and technical documentation
Our Service
Aprofood has a well-established analytical platform for peony pollen, enabling us to carry out quantitative assays quickly, accurately and reliably. We offer customizable testing solutions to determine the content of specific components in your samples, in order to confirm the quality and potency of the product. Our services cover a variety of components, including:
Amino Acid Determination
Amino acids are important nutritional components of peony pollen. We use post-column derivatization cation-exchange chromatography to quantify free and total amino acids, including essential amino acids, so that the protein quality and nutritional value of the pollen can be evaluated. This method is applicable to raw pollen, wall-broken pollen, pollen powders and pollen-containing products.
The fatty acid composition reflects the nutritional characteristics and oxidative stability of pollen lipids. We use GC-MS in selected ion monitoring mode to identify and quantify saturated, monounsaturated and polyunsaturated fatty acids. The high sensitivity and selectivity of this method are suitable for complex lipid matrices and low-content components.
Trace elements are an important part of the nutritional value of pollen. We use inductively coupled plasma mass spectrometry (ICP-MS) to determine the content of mineral and trace elements such as potassium, calcium, magnesium, iron, zinc, copper, manganese and selenium, with a wide linear range and low detection limits. The same platform can also be used to monitor heavy metals.
Flavonoids and polyphenols are the main active compounds associated with the antioxidant activity of peony pollen. We determine the total flavonoid and total phenolic content by spectrophotometry, and quantify individual flavonoids and phenolic compounds by HPLC or LC-MS/MS, providing both overall potency indicators and detailed compound profiles.
Proteins and polysaccharides are major functional components of pollen. We determine total protein and polysaccharide by the phenol-sulfuric acid method, with options for further analysis of monosaccharide composition. These indicators are commonly used for quality specifications and for evaluating the effect of wall-breaking.
Marker Compound and Potency Determination
For clients who need to define the potency of a product, we quantify selected marker compounds using validated HPLC or LC-MS/MS methods, and calculate the content per unit weight of pollen, extract or finished product. This allows batch-to-batch consistency to be evaluated and supports the setting of quality specifications.
Method Validation and Customized Solutions
Quantitative results are only meaningful when the method is reliable. Aprofood can carry out method development and validation, including linearity, limit of detection and quantification, precision, accuracy (recovery) and repeatability, using certified reference materials and standard compounds. We can also tailor the testing plan to your samples, whether raw pollen, wall-broken pollen, extracts, tablets, capsules or beverages, and to your regulatory and quality requirements.
Analytical Techniques
| Analytical Technique |
Target Components |
Application |
| Post-column derivatization cation-exchange chromatography |
Free and total amino acids |
Evaluation of protein quality and nutritional value |
| Gas chromatography-mass spectrometry in selected ion monitoring mode (GC-MS-SIM) |
Fatty acids (saturated, monounsaturated, polyunsaturated, including α-linolenic acid) |
Fatty acid profiling and lipid quality evaluation |
| Inductively coupled plasma mass spectrometry (ICP-MS) |
Mineral and trace elements, heavy metals |
Nutritional element determination and safety monitoring |
| High-performance liquid chromatography (HPLC) |
Flavonoids, phenolic compounds, marker compounds |
Compound profiling and potency determination |
| Liquid chromatography-tandem mass spectrometry (LC-MS/MS) |
Trace-level flavonoids, phenolics and marker compounds |
High-sensitivity quantification in complex matrices |
| UV-Vis spectrophotometry |
Total flavonoids, total phenolics, total polysaccharides |
Overall potency indicators |
| Kjeldahl/Dumas nitrogen analysis |
Total protein |
Protein content and quality specifications |
| Post-column derivatization cation-exchange chromatography |
Free and total amino acids |
Evaluation of protein quality and nutritional value |
Our Workflow of Quantitative Assay & Potency Determination
01 Consultation and Project Design
We discuss your sample type, target components and quality or regulatory requirements, and then design a testing plan and provide a quotation.
03 Method Selection and Validation
We select a suitable analytical method for each target component. For new or customized projects, method development and validation are performed, including linearity, detection limits, precision and recovery.
05 Data Review and Calculation
Results are calculated, cross-checked and reviewed by experienced analysts, and abnormal data are re-tested when necessary.
02 Sample Receipt and Pretreatment
Samples are registered and inspected on arrival. Depending on the matrix, we carry out drying, grinding, wall-breaking, extraction, hydrolysis or digestion to prepare the sample for analysis.
04 Instrumental Analysis
Samples are analyzed on the corresponding platform, with calibration standards, blanks and quality control samples run together with each batch.
06 Reporting and Technical Support
We deliver a detailed report that includes methods, results and quality control data. Our team is available to help you interpret the results and plan follow-up work such as batch comparison and specification setting.
Advantages of Our Services
Peony-specific expertise
We focus on peony pollen and related materials, and understand how variety, origin, wall-breaking and processing affect the content of active compounds in each sample.
One sample, multiple results
Amino acids, fatty acids, trace elements, flavonoids and polysaccharides can be determined from a single sample submission, saving time, sample volume and cost.
Validated and traceable methods
Our methods are verified for linearity, sensitivity, precision and recovery, and every report includes method and quality control data for full traceability.
Flexible sample types
We handle raw pollen, wall-broken pollen, extracts, powders, tablets, capsules and beverages, with pretreatment adapted to each type of matrix.
Frequently Asked Questions (FAQs)
Q1: What types of peony pollen samples can you analyze?
A1: We can analyze raw pollen, wall-broken pollen, pollen powders, extracts, tablets, capsules and beverages. Because each matrix behaves differently, sample pretreatment such as drying, grinding, extraction, hydrolysis or digestion is adapted to the sample type. If your product is not on this list, please tell us about it and we will evaluate the best approach, including any special handling or storage requirements.
Q2: Which components can be quantified?
A2: Our routine programs cover amino acids, fatty acids, trace elements, flavonoids and polyphenols, proteins, and polysaccharides. Selected marker compounds can also be quantified to define the potency of a raw material, extract or finished product. You can choose a single indicator or combine several into one customized testing panel, depending on your quality goals and budget.
Q3: How much sample is required for testing?
A3: The amount depends on the number of target components and the sample matrix, since some analyses require separate extraction or digestion steps. As a general guide, a few grams is enough for most routine panels. The exact amount will be confirmed in the testing plan, and we recommend sending a little extra for any necessary re-testing, so that your project is not delayed by insufficient material.
Q4: Can you test for a specific marker compound that is not on your standard list?
A4: Yes, we can develop and validate a customized method for most target compounds when a reference standard is available. You may also provide the standard yourself, and our scientists will assess the feasibility before the project starts. This helps avoid unexpected delays and ensures the method suits your sample, while keeping the final data reliable and reproducible.
Q5: How do you ensure the accuracy of the results?
A5: Our methods are verified for linearity, limits of detection and quantification, precision and recovery. Calibration standards, blanks and quality control samples are run together with each batch, and abnormal data are re-tested when necessary. Every report includes the method and quality control data so that the results can be reviewed and traced, giving you full confidence when comparing batches or supporting product documentation.
Accurate quantification of peony pollen components depends on far more than the instrument. Variety, origin, moisture content, particle size, wall-breaking treatment and matrix interference can all influence the results, so each project needs a carefully matched approach. Aprofood combines peony-specific experience with validated analytical methods, selecting the most suitable technique and sample preparation for every target component to deliver accurate, reproducible data on the content and potency of your products. To discuss your project needs or request a testing plan and quotation, please feel free to contact us.
For Research Use Only.
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