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What should be considered in the formulation design of herbal granule solutions?
2026-02-26
Why OEM/ODM Clients Must Focus on Formulation Design?
In the functional food and dietary supplement OEM sector, herbal granule solutions have become one of the preferred dosage forms for B2B clients. According to data, the global herbal extract market exceeded $42 billion in 2023, with granule dosage forms achieving a compound annual growth rate of 12.5% due to their advantages of high production efficiency, strong dosage form adaptability, and excellent end-user experience.
However, in OEM/ODM collaborations, technical decisions made during the formulation design stage directly determine the compliance risks, production costs, and market competitiveness of the product after its launch. Many clients frequently encounter the following pain points during the OEM process: Inappropriate raw material compatibility leading to antagonistic efficacy or poor stability; Taste defects causing high return rates at the end-user level; Misunderstanding of regulations causing customs clearance delays or labeling corrections; Ambiguous process parameters leading to batch-to-batch quality fluctuations.
This article, from the perspective of B2B OEM collaboration, systematically analyzes the six key technical nodes of herbal granule formulation design, helping clients achieve efficient communication and accurate delivery when collaborating with manufacturers.
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How can OEM herbal granule solutions customers mitigate supply chain risks?
1.Raw Material Traceability and Supplier Audit
Geographical Verification: Require suppliers to provide proof of raw material origin (e.g., GAP-certified Yunnan Panax notoginseng base, organic certification for Ningxia wolfberry) to avoid the risk of counterfeit products.
Pesticide Residue and Heavy Metal Pre-screening: Obtain third-party testing reports (SGS, Eurofins), focusing on multiple pesticide residue scans (GC-MS/MS 500+ items) and heavy metals (lead ≤0.5mg/kg, arsenic ≤0.3mg/kg).
Extract Standardization: Confirm the content of marker components in the raw material COA (e.g., astragaloside A ≥0.8%, total saponins ≥5%), and establish a batch-to-batch fingerprint comparison archive.
2.Scientific Assessment of Formulation Compatibility
Synergistic/Antagonistic Mechanism Validation: Validate the rationality of the formulation through cell models or literature evidence. For example, the combined use of Ganoderma lucidum polysaccharides and Lycium barbarum polysaccharides can enhance the immune regulation synergy index (CI value ≥ 1.2), while the combined use of certain tannin-containing raw materials with proteins may reduce bioavailability.
Solvent compatibility review: When water extracts and alcohol extracts are combined, the clarity and precipitation risk after co-solution need to be assessed.
OEM flexible design: It is recommended that customers retain the "basic formula + functional enhancement module" architecture, which facilitates rapid adjustments based on market feedback (e.g., basic immune formula + sleep support module/energy metabolism module).
Herbal granule solutions - taste and solubility optimization
1. Industrial solutions for solubility defects
Customer pain point: Flocculent precipitation or stratification occurs after reconstitution, leading to end-user complaints.
Particle size control standards: Micronization to D90 ≤ 45μm is recommended, but the risk of hygroscopicity must be balanced (smaller particle size means larger specific surface area, leading to an exponential increase in moisture absorption rate).
Solubilization system design:
Hydrophilic carriers: Maltodextrin (DE value 10-15), resistant dextrin (as claimed for dietary fiber)
Surfactants: Lecithin (natural source, 0.3-0.8%) or polysorbate 80 (must comply with GB 2760 limits)
Dispersion technology: High-speed shear dispersion + spray drying granulation to ensure rapid solubility (≤2 minutes for complete dissolution, no visible residue)
2. B-end cost considerations for masking taste
Market data: Poor taste is the primary factor contributing to the decline in repurchase rates of functional foods (accounting for 37%).
Natural Flavor Masking Solutions:
Natural Flavor Masking Solutions:
Bitterness Blocking: β-Cyclodextrin inclusion (inclusion rate ≥85%), increasing cost by approximately ¥8-12/kg
Astringency Modification: Adding 0.5-1.0% erythritol or steviol glycosides (Reb-A 97%), zero calories and in line with clean label trends
Flavor Synergy: Developing regional flavor combinations such as citrus-ginger root and berry-ginseng, tailored to European and American market preferences, using herbal granule solutions
Standardized Sensory Evaluation: Establishing an internal tasting panel (n≥15), using a 9-point preference scoring system, with a target score ≥7.0 for mass production.
3.OEM Customer Label Claim Support
Providing Clean Label Options: All flavor modifiers can be of natural origin and labeled as "natural flavoring" or specific plant extracts in the ingredient list, avoiding negative associations with "artificial additives".
Stability and Molding Process: Core for Ensuring Consistent OEM Order Delivery
4.1 Shelf Life Stability Guarantee
Key Points of B2B Quality Agreements: Clearly defining accelerated testing and long-term sample retention standards.
Moisture Absorption Control System:
Environmental Control: Dew point temperature in the production area ≤ -20℃, raw material water activity (Aw) ≤ 0.25 before packaging.
Packaging Solution: Aluminum foil composite bag (PET/AL/PE structure, moisture permeability ≤ 0.5g/m²·24h) + silica gel desiccant (1g/10g product).
Shelf Life Verification: Accelerated testing at 40℃/75%RH for 6 months, content decrease rate ≤ 5%, no clumping or discoloration.
Chemical Stability Monitoring:
Antioxidant Design: For polyphenol-sensitive components, add 0.05-0.1% rosemary extract (natural antioxidant) or vitamin E.
Light Protection: Use brown bottles or aluminum foil bags for light-proof packaging; conduct accelerated light testing (4500Lux±500Lux, 10 days) if necessary.
4.2 Molding Process Selection and OEM Capacity Matching
Optimal process recommended based on customer order size and product characteristics:
| Process | Minimum Order Quantity (MOQ) | Applicable Raw Material Characteristics | Capacity Efficiency |
Cost Structure |
| Wet Granulation | 500kg | High viscosity, thermal stability | Medium |
low equipment investment, medium energy consumption |
| Dry granulation | 300kg | Heat sensitive, easily oxidized | Medium | No drying cost, but lower yield |
| Fluidized bed granulation | 1000kg | Large-scale standardized products | High |
High equipment investment, low unit cost |
| Spray drying | 200kg | High solubility requirement | High |
Suitable for one-step molding from extract |
Dosage and Efficacy Precision
Conversion from Traditional Dosage to Scientific Dosage
Avoid directly using medical claims such as "treatment" or "cure"; convert to functional claims.
Dosage Conversion Model: Three-level conversion relationship between crude drug amount → extract amount → marker component amount
Example: Rhodiola rosea anti-fatigue product, recommended daily intake of rhodioloside ≥6mg (equivalent to 3-5g of crude drug or 300-500mg of extract, at a 10:1 ratio)
Bioavailability Enhancement Strategies:
* Piperine Synergy: Increases curcumin absorption rate by 20 times
* Liposome Encapsulation Technology: Suitable for fat-soluble components (such as coenzyme Q10, fat-soluble vitamins), increasing bioavailability by 3-5 times, but increasing cost by approximately ¥150-200/kg
Efficacy Verification and Literature Support
Provide clients with a claim support package:
* Raw material level evidence: Abstracts of in vitro/in vivo studies indexed in PubMed (≥5 relevant articles)
* Formulation level evidence: If required by the client, animal function tests (immunomodulation, antioxidation, etc.) can be commissioned to a CRO
* Compliance Claim Thesaurus: Based on GB 16740 or EFSA health claim regulations, providing pre-approved claim statements (e.g., "helps maintain normal immune function").
Differentiated Positioning Recommendations for OEM Clients
Basic Version: Single-ingredient/simple compound formula, cost-oriented, suitable for e-commerce traffic generation. Professional Version: Evidence-based herbal granule solutions formulation + quantitative labeling of active ingredients, suitable for pharmacies/professional channels.
Basic Version: Single-ingredient/simple compound formula, cost-oriented, suitable for e-commerce traffic generation. Professional Version: Evidence-based herbal granule solutions formulation + quantitative labeling of active ingredients, suitable for pharmacies/professional channels.
Key to Successful OEM/ODM Collaboration
The formulation design of herbal granule solutions serves as a technological bridge connecting traditional herbal wisdom with the modern consumer market. For B2B clients, choosing a manufacturing partner with the following capabilities is crucial:
✓ Technical Integration Capabilities: One-stop solutions from raw material selection to process optimization
✓ Regulatory Foresight: Multi-market compliance experience, mitigating potential legal risks
✓ Quality Assurance Capabilities: A comprehensive quality system and batch traceability mechanism
✓ Flexible Response Capabilities: Support for small-batch trial production (MOQ from 100kg) and rapid delivery
Through in-depth collaboration with professional manufacturers, OEM clients can focus more on brand building and market expansion, achieving a dual improvement in supply chain efficiency and product competitiveness.
Partner with Sost Biotech for Professional Herbal Granule Solutions
Xi'an Sost Biotech Co., Ltd. is a B2B manufacturer specializing in plant extracts and functional food ingredients, providing global OEM/ODM clients with:
Herbal Granule Solutions (Instant/Sustained-Release/Effervescent)
Compound Herbal Premixes (Immunity, Sleep, Metabolism, Beauty, etc.)
Functional Food Ingredients (Standardized Extracts, Natural Pigments, Natural Sweeteners)
References:
[1] Grand View Research. Herbal Extracts Market Size Report, 2023-2030[R]. San Francisco: Grand View Research, 2023.
[2] U.S. Food and Drug Administration. 21 CFR Part 111 - Current Good Manufacturing Practice in Manufacturing, Packaging, Labeling, and Holding Operations for Dietary Supplements[S]. Silver Spring: FDA, 2023.
[3] European Food Safety Authority. Guidance on the preparation and presentation of an application for authorisation of a novel food in the context of Regulation (EU) 2015/2283[J]. EFSA Journal, 2021, 19(3): e06560.