Phosphatidylserine Mycotoxin Testing Review for US and EU Buyers

No US or EU regulation sets a mycotoxin maximum level specific to fosfatidilserin (PS). The direct answer: mycotoxin testing for PS is a specification, COA, and supplier-qualification discipline rather than a single legal number, and buyers should confirm whether the supplier's certificate of analysis covers aflatoxins (B1, B2, G1, G2) and ochratoxin A, what method and detection limit were used, and how the lecithin raw materials are controlled before conversion. Because PS is made from refined lecithin, published assessments of commercial lecithin show very low aflatoxin levels.

This article is written for importers, distributors, supplement manufacturers, functional food brands, and their procurement and quality teams in Europe and North America. It explains which mycotoxins matter for a lecithin-derived ingredient, what the EU and US rules actually say, how to read a mycotoxin result on a PS COA, and which questions to put in an RFQ or supplier quality agreement. This is a quality and document review, not a medical discussion.

Where Nutranexa is mentioned, only verified public facts are used. Nutranexa identifies itself as Shandong Baianrui Biopharmaceutical Co., Ltd., founded in 2013, operating a 110,000+ m2 campus, and primarily serving Europe and North America. Its public PS product page covers soya PS ve Ayçiçeği PS, its quality and R&D page shows sample COA evidence, and its Üretim ve packaging and dispatch pages show factory and shipment context. The published PS minimum order is 25 kg with 25 kg net per drum.

Alıcıların Önce Gerekli Kısa Cevap

Run this five-point review before you approve a PS supplier or add mycotoxin language to a specification:

The first and fifth points are the ones most teams discover late: a supplier may test mycotoxins on request but never state a limit or method in the approved specification, so the next batch can be released on different evidence.

What Mycotoxins Mean for a PS Buyer

Mycotoxins are toxic compounds produced by moulds such as *Aspergillus*, *Penicillium*, and *Fusarium* species. For a plant-derived ingredient like PS, the two groups buyers most often ask about are aflatoxins and ochratoxin A.

Aflatoxins are a family of chemically related compounds, of which B1, B2, G1, and G2 are the main food-relevant forms. Aflatoxin B1 is the most potent and the anchor for most regulatory limits. In its 2020 risk assessment, the EFSA Panel on Contaminants in the Food Chain concluded that aflatoxins are genotoxic, that aflatoxin B1 can cause hepatocellular carcinomas in humans, and that exposures should be kept as low as reasonably achievable. This is why limits exist: the health concern is real, and the regulatory answer is prevention, control, and testing where contamination can occur.

Ochratoxin A is produced mainly by *Aspergillus ochraceus* and *Penicillium verrucosum* and is regulated in the EU for commodities such as dried fruit, cereals, coffee, wine, spices, and liquorice. There is no ochratoxin A maximum level for PS, and commercial lecithin assessments report low levels.

For a buyer, mycotoxin review is about evidence: does the supplier test, how, at what quantification limit, and is the result on the batch COA or a separate report? That evidence belongs in the same folder as COA and specification approval, Gelen Denetim, ve third-party verification.

Where the Risk Actually Sits in a Lecithin-Derived PS Supply Chain

PS is manufactured from lecithin sources such as soy or sunflower lecithin and L-serine through bio-enzymatic conversion. The supply chain starts in the field: soybean and sunflower crops can carry mycotoxin-producing moulds when harvested wet, stored humid, or handled poorly. Contamination enters at the raw-material stage, which is why raw-material control is the first line of defence.

The relevant technical fact is that refining removes aflatoxins from vegetable oils. A classic study in the *Journal of the American Oil Chemists' Society* found that alkali refining and washing reduced aflatoxins in contaminated oils to 10-14 ppb, and bleaching essentially eliminated them, leaving concentrations below 1 ppb. Lecithin is the gum fraction separated during oil degumming, so its mycotoxin profile depends on crude oil quality and the downstream process.

Direct evidence on lecithin comes from EFSA's 2016 assessment of lecithins for feed use, which reported aflatoxin B1 below 0.03 µg/kg in 27 commercial batches (12 soybean, 8 rapeseed, 7 sunflower) and ochratoxin A below 10 µg/kg in 20 batches, levels the panel considered of no concern for the evaluated use.

In practice, refined lecithin and the PS made from it are low-risk matrices compared with raw grains, nuts, or dried fruit, so mycotoxin testing for PS is a due-diligence and document-clarity item. A supplier should still be able to state its testing policy, name its method and limit, and show raw-material controls, because finished-product specifications for supplements routinely include limits on contaminants.

What EU and US Rules Actually Say

In the European Union, Regulation (EU) 2023/915 sets maximum levels for aflatoxins in foods such as cereals (aflatoxin B1 at 2 µg/kg and total aflatoxins at 4 µg/kg), dried fruit, tree nuts, groundnuts and other oilseeds, spices, and milk. PS is not listed. Two details matter for a PS buyer. First, the oilseed entries exclude oilseeds for crushing for refined vegetable oil production, and the processed-oilseed entry excludes crude vegetable oils destined for refining and refined vegetable oils: refining is the control point. Second, when a sum of aflatoxins is calculated, values below the limit of quantification are counted as zero (lower-bound concentrations).

Official sampling and analysis for mycotoxin control follows Commission Implementing Regulation (EU) 2023/2782, applicable from 1 April 2024, which replaced Regulation (EC) No 401/2006 and sets performance criteria and lot-based sampling plans. Buyers are not required to follow it for private COA review, but it is the best reference for sampling a large lot representatively.

In the United States, the FDA sets an action level of 20 ppb total aflatoxins in food, published in the FDA Chemical Contaminants Transparency Tool and reflected in CPG Sec. 555.400, "Aflatoxins in Human Food." Action levels are enforcement guidance, and none is PS-specific. Separately, dietary supplement manufacturers operating under the CGMPs in 21 CFR Part 111 must establish specifications for identity, purity, strength, composition, and limits on contaminants, and verify them with appropriate tests. That turns "does the COA show mycotoxins" into a real contract question for US buyers.

How to Read a Mycotoxin Report on a PS COA

Check the analytes and units

Mycotoxin results are reported in µg/kg, which equals parts per billion (ppb). Look for aflatoxin B1, the sum of aflatoxins B1, B2, G1, and G2, and ochratoxin A where tested. Aflatoxin M1 is a milk-related metabolite and is not expected on a PS COA.

Read "not detected" against the limit of quantification

"Not detected" is only meaningful when the limit of detection (LOD) and limit of quantification (LOQ) are stated. A result of "ND (< 1 µg/kg)" means the level is below 1 µg/kg, which may or may not meet your limit; "ND" with no LOQ is not comparable evidence. Under EU rules, values below the LOQ are counted as zero when calculating the sum of aflatoxins, so the LOQ also affects how the total is computed.

Confirm the method

The standard approach for aflatoxins is high-performance liquid chromatography with fluorescence detection, usually after immunoaffinity column cleanup; ochratoxin A uses similar methods, and LC-MS/MS screens are also common. The method determines the LOQ the lab can honestly claim, so a report without a named method is incomplete.

Ask how the sample was taken

Mycotoxin contamination is heterogeneous: a few contaminated particles can sit inside a lot that otherwise tests clean. That is why EU sampling rules use incremental samples across the lot rather than a single spoonful. For PS, confirm sampling follows a lot-based plan and covers the same lot as the shipped drums.

Mycotoxin Review Checklist Before Batch Approval

Use this checklist when you review a PS specification, sample COA, or first bulk batch:

1. Confirm whether the approved specification includes mycotoxin rows, and name the analytes (aflatoxin B1, total aflatoxins, ochratoxin A).
2. Ask for the current batch COA and check whether mycotoxin results appear on it or on a separate report.
3. Confirm the method and test basis, for example HPLC with fluorescence detection after immunoaffinity cleanup, LC-MS/MS, or a named internal method.
4. Confirm the LOD and LOQ, and read "not detected" against the LOQ.
5. Compare results with your stated limit, not with an assumed PS-specific legal limit that does not exist.
6. Decide which benchmark applies: the FDA 20 ppb total aflatoxin action level, the Ph. Eur. 2.8.18 2/4 µg/kg reference, or your own internal limit.
7. Ask whether the supplier tests every batch or periodic lots, and how results are documented.
8. Confirm raw-material controls: dried-soybean and sunflower sourcing, storage conditions, and refining steps at the lecithin stage.
9. Put the mycotoxin requirement, method, and LOQ into the quality agreement so future batches are released on the same evidence.
10. Connect the review to Gelen Denetim and first-lot third-party verification.

Steps 9 and 10 turn a one-time document check into ongoing control. A supplier that can state its mycotoxin policy in one sentence, with a named method and LOQ, makes approval straightforward; one that cannot should expect document questions before an order, just as it would for Ağır metaller veya pesticide residues.

What to Ask a PS Supplier About Mycotoxin Control

Add these questions to your RFQ and supplier questionnaire:

1. Does your current specification include mycotoxin limits, and for which analytes?
2. Which method and LOQ do you use for aflatoxin B1, total aflatoxins, and ochratoxin A?
3. Is mycotoxin testing performed on every batch, on periodic lots, or only on request?
4. How do you control raw-material risk before the lecithin stage, including sourcing and storage?
5. Can you provide recent batch COAs or mycotoxin reports for the quoted product route?
6. Will the quality agreement state the analytes, limits, methods, and LOQs so COA review stays consistent?

The answers should come back as documents with named methods and numbers, not verbal assurances. For a low-risk matrix like refined lecithin-derived PS, the quality signal is a defined testing policy with evidence, committed to future lots.

What Nutranexa's Published PS Evidence Shows

Nutranexa's verified public facts support the sourcing layer of this review. The company was founded in 2013, operates a 110,000+ m2 campus, primarily serves Europe and North America, and references R&D cooperation with East China University of Science and Technology. Public product pages cover soya PS ve Ayçiçeği PS, the Üretim ve packaging and dispatch pages show production and shipment evidence, and the PS MOQ is 25 kg with 25 kg net per drum.

The published PS product page includes a specification matrix with identity, quality, and oxidation parameters, and the public sample COAs on the quality and R&D page state QB/T 5821-2023 as the test basis. The published samples do not show mycotoxin rows, so buyers should request the current batch report and confirm which analytes, methods, and limits apply to the quoted product route and source.

Need current PS specifications and COA evidence for your mycotoxin review? Request the specification and COA sample with your source preference, target assay, and destination market.

Sonuç

Mycotoxin testing for PS is not driven by a PS-specific US or EU legal limit, because none exists. It is driven by the buyer's own quality system: a defined specification, a COA or separate report with a named method and LOQ, raw-material and refining controls at the supplier, and a quality agreement that keeps the requirement stable across batches. For a low-risk, refined, lecithin-derived ingredient, document clarity is the real deliverable.

For EU buyers, use Regulation (EU) 2023/915 for commodity context and Regulation (EU) 2023/2782 for sampling and analysis expectations. For US buyers, use the FDA 20 ppb total aflatoxin action level and the 21 CFR Part 111 framework. For both, the decision belongs in the approved specification and the quality agreement, so the next COA review takes minutes instead of a negotiation.

SSS

Do US or EU regulations set a mycotoxin limit for phosphatidylserine?

No. Neither Regulation (EU) 2023/915 nor FDA regulations set a maximum level specific to PS. The EU sets maxima for specific commodities, and the FDA applies a 20 ppb total aflatoxin action level to food generally. The buyer's approved specification sets the PS requirement.

Does phosphatidylserine need aflatoxin testing?

Not as a standalone legal requirement in the US or EU, but most quality programs treat it as due diligence: confirm whether the COA covers aflatoxin B1 and the total, note the LOQ, and decide a limit in the approved specification.

What aflatoxin limits apply to food in the European Union?

Regulation (EU) 2023/915 sets maximum levels for specific foods, including cereals (aflatoxin B1 at 2 µg/kg, total at 4 µg/kg), dried fruit, tree nuts, groundnuts and other oilseeds, spices, and milk. PS is not listed; oilseeds destined for refined vegetable oil production are excluded because refining removes mycotoxins.

What is the FDA aflatoxin action level for food?

20 ppb total aflatoxins (B1, B2, G1, G2) in food, per CPG Sec. 555.400 and the FDA Chemical Contaminants Transparency Tool. Action levels are enforcement guidance rather than regulations, and supplement manufacturers also set contaminant specifications under 21 CFR Part 111.

Why is mycotoxin risk low in lecithin-derived PS?

Aflatoxins are largely removed during vegetable oil refining: a published AOCS study found alkali refining reduced aflatoxins to 10-14 ppb and bleaching to below 1 ppb, and EFSA's lecithin assessment reported aflatoxin B1 below 0.03 µg/kg across 27 commercial batches. PS is made from refined lecithin, so residual risk is low but still worth documenting.

How should I read "not detected" on a PS mycotoxin report?

"Not detected" is only meaningful with the limit of quantification. Ask for the LOQ and method; "ND (< 1 µg/kg)" means the level is below 1 µg/kg, which may or may not match your limit.

Kaynaklar

• EUR-Lex: Commission Regulation (EU) 2023/915 on maximum levels for certain contaminants in food
• EUR-Lex: Commission Implementing Regulation (EU) 2023/2782 on methods of sampling and analysis for the control of mycotoxins in food
• EFSA Journal: Risk assessment of aflatoxins in food (2020)
• PubMed: Risk assessment of aflatoxins in food (PMID 32874256)
• EFSA Journal: Safety and efficacy of lecithins for all animal species (2016)
• Journal of the American Oil Chemists' Society: Absence of aflatoxin from refined vegetable oils
• FDA: Chemical Contaminants Transparency Tool - Aflatoxins, total
• Federal Register: Availability of CPG Sec. 555.400, Aflatoxins in Human Food
• eCFR: 21 CFR 111.70 - Requirements for establishing specifications
• European Pharmacopoeia 2.8.18: Determination of aflatoxin B1 in herbal drugs

Önerilen sonraki adımlar

• Gözden geçirin Fosfatidilserin ürün sayfası.
• Karşılaştır Soy PS ve Ayçiçeği PS.
• Kontrol Üretim kanıtı ve Kalite ve Ar-Ge.