| HS Code | 792871 |
| Chemical Name | Poly-L-lysine |
| Molecular Formula | (C6H12N2O)n |
| Appearance | White to off-white powder |
| Solubility | Highly soluble in water |
| Molecular Weight | Varies, commonly 30,000–70,000 Da |
| Storage Temperature | 2-8°C |
| Sterility | Non-sterile, sterilization by filtration recommended |
| Ph Range Solution | 7.0–8.5 (1% aqueous solution) |
| Cas Number | 25988-63-0 |
| Grade | Cell culture grade |
| Biodegradability | Biodegradable |
| Origin | Synthetic |
| Main Use | Cell adhesion in tissue culture |
As an accredited Poly Lysine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Poly Lysine is packaged in a 100g amber plastic bottle with a secure screw cap and a detailed product information label. |
| Shipping | Poly Lysine is shipped in tightly sealed containers, protected from moisture and light to preserve stability and prevent contamination. It is packaged according to safety regulations, accompanied by appropriate labeling and documentation. Temperature and handling requirements may vary; dry ice or refrigeration is used for sensitive grades. Shipping complies with relevant chemical transport guidelines. |
| Storage | Poly Lysine should be stored in a cool, dry place, away from direct sunlight and moisture. It is typically kept at 2–8°C (refrigerator conditions) to maintain stability. The container should be tightly sealed to prevent contamination and degradation. If provided as a lyophilized powder, protect from humidity. For long-term storage, aliquoting and freezing at −20°C is recommended. |
Competitive Poly Lysine prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Poly Lysine keeps earning its place as a gold-standard ingredient in food processing and preservation. After three decades of hands-on production in our plant, I have watched this amino acid polymer work its way into products where safety and stability matter most. Businesses come to us because they want to cut down on synthetic preservatives, boost food safety, and still achieve that clean label consumers trust. Poly Lysine answers these pressures with a natural approach that withstands harsh, real-life conditions on production lines.
In our facility, most Poly Lysine batches come out as epsilon-Poly-L-Lysine, the naturally fermented type. We control every step from raw material sourcing to fermentation, focusing on purity and batch consistency. Typical models include high-purity granular types for dry blends and water-dispersible versions for liquid systems. Granule size, moisture content, and charge density get checked every few hours, not just for paperwork, but because even a slight change in polymer length changes the way Poly Lysine interacts with microbial cells.
Working on the shop floor, one learns that consistency trumps everything. Customers depend on repeatable lots, especially those running high-speed filling lines or working with delicate foods like ready-to-eat salads and protein shakes. Each batch comes with a tight molecular weight range: longer chains deliver broader-spectrum control against bacteria and some molds, but shorter chains tend to dissolve faster in cold process systems. Choosing the right model comes down to understanding the application—not just in theory, but by iterative trial over the years.
While hundreds of specification sheets float around this industry, only a handful of details regularly decide project success. In our experience, the critical numbers are purity, moisture, pH in a 1% water solution, and average polymer length. Our Poly Lysine products offer over 95% purity by weight, with water content staying below 6%. Nobody wants a caking powder, so we test each drum for flow value before sealing it up.
As for pH, food technologists lean towards a neutral-to-slightly alkaline profile, which fits right into salad dressings, baked snacks, and cooked meat products. Whether meant for a vegan spread or a chicken sausage, Poly Lysine’s pH makes it friendly to both, while other preservatives trigger flavor or color problems. We skip any solvents or synthetic extenders in our process, forgoing commodity shortcuts in favor of long-term customer loyalty.
In food plants, cross-contamination and shelf-life failures keep managers up at night. Poly Lysine addresses both. Its effectiveness isn’t just a lab myth; real-world conditions on a hundred production lines have shown us how it suppresses Listeria, some strains of E. coli, and staph, even in cold and moist formulations that attract these pathogens. Water activity, pH, and competitive microflora all shape how any preservative works, but Poly Lysine is less temperamental than the old guard like nitrite or sorbate. It survives pasteurization steps and holds its own through freeze-thaw cycles, so distribution to warmer markets remains simpler.
Bread and pastry lines use it to hold off mold outbreaks, even in minimally packaged goods. Sushi chefs and fresh-cut fruit packers leverage it for its total lack of off-flavor—years of feedback showed they could use it at functional doses without their customers picking up “pharmaceutical” bitterness. This level of real-world neutrality is hard to match with most chemical preservatives, especially when reduction of sodium is a concern.
Our chemists frequently field inquiries from skin care brands seeking plant-based, non-irritating antimicrobials. Poly Lysine answers that call, fitting easily into serums and creams, where stability and microbial control overlap. The polymer’s positive charge interacts with cell membranes, but unlike common preservatives, it doesn’t trigger allergic reactions in patch tests.
Pharmaceutical customers, especially those formulating oral suspensions or wound-care gels, need every additive to show both biocompatibility and low toxicity. Poly Lysine clears these hurdles—its natural origin and routine use in food open doors for faster regulatory reviews. Clinical trials even explore its use in slow-release drug formulations where its gradual breakdown helps modulate delivery. We do not push Poly Lysine as a cure-all, but years of stability and compatibility data back up each claim we make.
In the preservation industry, sodium benzoate and potassium sorbate have a long history. Yet these chemicals often add a distinct taste, generate regulatory debate, or struggle with mold and yeast at higher pH levels. Poly Lysine solves many of these issues through its broad spectrum: it remains active across a wider pH range, shows stability through thermal processes, and introduces no off-flavors. Not every food-grade polymer can match this profile; few can maintain integrity during retort or UHT applications.
Organic food producers often need to stay within the limitations of clean-label standards, which Poly Lysine supports. Our plant sticks to microbial fermentation as the only production route, using food-grade substrates, and the process leaves no traces of allergens or byproducts. The resulting product carries global regulatory recognition for natural preservative use, which synthetic competitors cannot claim.
Traditional preservatives sometimes lose activity in complex matrices like dairy or high-protein foods due to binding or inactivation. Poly Lysine’s structure helps maintain function even in these tough systems, minimizing the risk of microbial spoilage. We work directly with QA teams to fit dosing to each product, helping customers solve real problems, not paper ones.
As a direct manufacturer, scale presents both a challenge and a promise. Tiny laboratory batches can look impressive but rarely predict actual performance on 10-ton lots. Over the years, we invested in large-batch reactors with tight process monitoring. This move keeps batch-to-batch variation minimal, which our global food customers demand—especially those running automated lines with little room for error.
Larger scale also means our product supports both high-volume processors and small artisanal producers. Volume allows us to drop production costs, but we never short-change the critical checks. Our in-house labs use HPLC and amino acid analysis, not just spot tests. The entire team undergoes routine training, and auditors have open access to our processes. Trust, both regulatory and commercial, grows by showing our work in real time, not just sending out a passing lab slip.
Handling raw materials for Poly Lysine also brings lessons learned. Some fermentable sugars and protein feedstocks can subtly alter the polymer structure. We source only consistent inputs and test each lot ourselves, avoiding issues later in downstream applications. Raw material QA matters more than many buyers realize; a poor substrate base can cause headaches in finished products, and only producers with experience spot these signs early.
From a sustainability angle, Poly Lysine offers some genuine advantages. Our fermentation process runs at moderate temperatures, consuming less energy than many chemical syntheses. Waste streams mainly consist of spent nutrients, which classify as low-hazard and often feed nearby agricultural projects. While no industry is waste-free, our focus keeps environmental output to a minimum.
Unlike petrochemical-derived preservatives, Poly Lysine stems from renewable sources. We use sugar from non-GMO crops and have spent years optimizing our fermentation yields to extract more product per unit of raw material. Less waste means both better economics and a lighter environmental touch.
To comply with global market needs, we keep our supply chain fully transparent. Customers want traceability from fermentation vat to final packaging, and we freely share batch records. Traceability not only satisfies regulatory demands but also adds a layer of quality that trading companies cannot match.
The past few years have thrown supply chains into chaos. Our response? We keep raw material contracts running at least a year ahead, using buffer stocks. Global shipping delays forced us to build storage and invest in robust packaging that protects quality, even during unexpected transit holds. Shrink-wrapped, air-tight drums prevent absorption and caking, two issues that can render preservatives ineffective before they ever reach an end user.
We keep open communication with customers on shipment status and regulatory changes. Every export market wants up-to-date documentation, which our compliance team provides in multiple languages. This proactive stance prevents many shipment delays and regulatory headaches—both for us and for our customers. Few chemical companies can say they have not missed a shipment throughout a global crisis, but our on-the-ground logistics team keeps our operation moving.
Long before Poly Lysine lands in a retail product, we encourage partners to run real-world trials. Our technical team travels out to factories, helping line operators avoid common pitfalls—wrong rehydration method, temperature shocks, pH drops. Preservative function always depends on these small factors, and our years in manufacturing have taught us that success depends on practical know-how as much as chemical purity.
Feedback loops play a huge part in improving our Poly Lysine offerings. Every time a noodle producer or dairy beverage company reports a shelf-life breakthrough or new process hiccup, we log that data and adapt. That direct feedback from line operators and food safety managers helps us evolve with the market. Our involvement doesn’t stop with the sale; it goes through regulatory audits, post-launch troubleshooting, and even the occasional reformulation.
Customers often ask, “What is the right Poly Lysine dose for my product?” Food safety and regulatory bodies set upper limits, but hitting the sweet spot is not just about passing tests. Years of hands-on support taught us that less is often more. Adding Poly Lysine at just the needed amount, factoring in food matrix, packaging, and expected storage conditions, avoids waste and minimizes cost.
We developed quick-check guides and on-site support to help quality control teams avoid dosing errors. This practice keeps both safety and sensory quality intact. Too much Poly Lysine may not harm the food, but cost and potential regulatory questions rise unnecessarily. Our approach values outcome over quantity, helping customers compete in tight-margin markets.
Regulatory landscapes change. FDA, EFSA, and other key agencies frequently update permissible levels for natural preservatives. Years of detailed documentation let us respond to these cues quickly. Each Poly Lysine batch leaves the factory with up-to-date lot tests and region-specific export paperwork, keeping client operations audit-ready.
Since Poly Lysine produces no toxic metabolites and metabolizes safely in the body, it regularly passes muster with health agencies. Both US and international bodies recognize it for use in foods, beverages, and even dietary supplements. We make sure every claim about safety traces back to experimental evidence and field data staring from early studies through to current industrial work.
Even as a manufacturer, honesty about Poly Lysine’s limitations remains central. This preservative can slow spoilage but will never make up for weak hygiene or packaging flaws. It does not eliminate all yeast issues in high-sugar or acidic applications without proper pH control, nor does it survive extreme pH in certain industrial cleaners.
Being on the production side means we see it all—times when Poly Lysine does exactly what’s intended, and edge cases where another solution proves better. Our technical advice backs off when Poly Lysine is not the best fit, guiding clients toward mixtures or alternative technologies if needed. Long-term business relies on solving, not just selling.
We do not rest on current achievements. Our R&D team continues to investigate modified versions of Poly Lysine that improve solubility, antimicrobial spectrum, or environmental stability. Partnerships with scientific institutes fuel this work, using field data from active customers.
New food products, processing methods, and dietary trends emerge every year. Far from simply supplying a standard product, we encourage collaborators to bring us their challenges. The lessons we learn from specialized projects filter down into every lot we make, whether for a small regional baker or a multinational food group.
Manufacturing Poly Lysine at scale requires stubborn attention to detail, technical curiosity, and grit. Over years of direct production, we have adapted ingredient options and methods to meet demands honestly and efficiently. Poly Lysine stands out by reliably improving safety and shelf-life—backed by lived experience, not just technical sheets.
