Product Introduction
Shaanxi Zhenhuacui Biotechnology uses cutting edge spray drying technology to make high-quality Dark Plum Powder. Our standardised extract has a food-grade consistency and 98% citric acid content, which has been confirmed by HPLC. It meets the high standards of supplement makers, drink makers, and functional food developers all over the world.

Advantages for businesses:

Precise Standardization for Consistent Results
Dark plum (Prunus mume) has been used for hundreds of years in traditional medicine. We've taken this botanical history and put it together with current extraction science to make a reliable ingredient for use in industrial products.
The highest quality dark plums are used to make our powder. They are carefully chosen, washed, treated with enzymes, and dried with a spray. The end result is a fine, dark brown powder that has standardised active chemicals, mostly malic acid and citric acid, which can be tested by HPLC.
This standardisation solves a very important problem for manufacturers: variation from batch to batch. Each lot gives you the same performance, which makes quality control and following the rules easier.
| Parameter | Specification | Test Method |
|---|---|---|
| Active Ingredient | Citric Acid 98% | HPLC |
| Appearance | Dark Brown Fine Powder | Visual |
| Particle Size | 80 Mesh (Pass Rate ≥95%) | Sieve Analysis |
| Moisture | ≤ 5.0% | Karl Fischer |
| Heavy Metals | ≤ 10ppm | ICP-MS |
| Microbiological | Total Plate Count ≤ 1000cfu/g | USP/EP |
| Shelf Life | 24 Months | Stability Study |
Complete specifications including arsenic, lead, E.coli, and Salmonella testing available in COA
Dietary Supplement Manufacturers
Make pills and tablets that are good for your gut system and your metabolism. The great flowability and compressibility of our powder make the process of making tablets easier.
Beverage Product Developers
Make healthy drinks and plant teas that are naturally sour. It dissolves more than 95% of the time in both hot and cold liquids, so the solutions are clear and don't form precipitates.
Functional Food Brands
Add to snack items, meal replacement bars, and protein bars. Process-safe up to 120°C in terms of heat.
Cosmetic Formulators
Natural fruit acids are gentle exfoliants that can be used on the face. Standard makeup bases can be used with this.

Your brand's image can be hurt quickly by contamination, inconsistent potency, or not following the rules set by regulators.
That's why we've built quality into every step:
Multi-Level Testing Protocol
International Certifications
These aren't just certificates on the wall - they represent daily operational discipline that protects your supply chain.

Step 1: Raw Material Selection
We get our dark plums from controlled growth areas and choose the ripest fruit based on its colour, sugar content, and acidity level. Before processing, each batch's name is checked.
Step 2: Preparation & Extraction
After being washed with clean water, fruits are handled with enzymes to get the most out of their active compounds while keeping their nutritional value.
Step 3: Concentration
Low-temperature vacuum concentration gets rid of extra water and keeps heat-sensitive substances safe. This step is very important for keeping biological action going.
Step 4: Spray Drying
Our high-tech spray dryer works with exactly controlled inlet and exit temperatures (160°C and 80°C), making particles that are all the same size and have the right amount of moisture and flow.
Step 5: Standardization & Blending
HPLC is used to analyse the batches and mix them so that the exact 98% citric acid standard is met.
Step 6: Quality Release
Before a batch moves, it has to pass our 23-point quality checklist and get COA approval from our QC head.
Standard Packaging:
25kg fiber drums with double food-grade PE bags (heat-sealed). This configuration protects against moisture, oxygen, and light during international shipping.
Custom Packaging Options:

Storage Requirements:
Store at room temperature (15-25°C) in dry conditions away from direct sunlight. Properly stored product maintains specification for 24 months from manufacture date.
Global Shipping:

Deep Plant Extract Expertise
Since 2014, we've specialized exclusively in botanical extracts. This focused experience means we understand the technical challenges of plant-based ingredients - from seasonal supply variations to extraction optimization.
R&D Partnership Approach
Our technical team works as an extension of your R&D department. We provide:
Production Flexibility
Whether you need 1kg for initial trials or 5,000kg for commercial production, we maintain consistent quality. Our dual production lines allow us to handle small batches without cross-contamination risks.
Risk Mitigation
We maintain 30-60 days safety stock of standard products. For customers with scheduled purchase agreements, we reserve dedicated production capacity to prevent supply disruptions.


Q: What's your minimum order quantity?
A: 1kg. We provide 50-100g samples for testing (refundable on first commercial order).
Q: Can citric acid be adjusted?
A: Yes. Our citric acid standards range from 10% to 98% depending on your application. Custom citric acid-malic acid ratios are available.
Q: What's your custom formulation lead time?
A: 15-20 days for R&D and stability testing. 20-25 days for commercial manufacturing after formula approval. We provide rush service.
Q: Can you assist develop final products?
A: Yes. Our OEM/ODM services include formulation design, prototype development, stability testing, package design, and commercial manufacture for tablets, capsules, powders, and gummies.
Ready to formulate with premium Dark Plum Powder backed by pharmaceutical-grade quality systems?
Contact our technical team:
📧 Email: plantex@asianbios.com
Send Inquiry
You may like