30 TPD Peanut Oil Plant in Vietnam — Ho Chi Minh City EU-Compliant Export Groundnut Oil Mill

Q: What are EU aflatoxin limits for groundnut oil and what is the compliance strategy?

EU Regulation (EC) No 1881/2006 (as amended) sets maximum levels for aflatoxins in groundnut oil. For refined groundnut oil intended for direct human consumption: total aflatoxins (B1+B2+G1+G2) maximum 4 μg/kg; aflatoxin B1 maximum 2 μg/kg. For groundnut oil used as an ingredient in processed foods: same limits apply. These limits are among the strictest in the world. EU border inspection authorities (including Hamburg, Rotterdam, and Antwerp) regularly test imported groundnut oil and groundnuts for aflatoxin compliance. The compliance strategy for this Vietnam plant has three layers: (1) raw material control — LED optical sorting rejects discoloured/mouldy kernels where aflatoxin is concentrated, plus ELISA rapid testing of every intake lot; (2) processing control — bleaching earth in the refinery partially removes aflatoxin; (3) finished product testing — HPLC testing of each export lot with SGS-verified Certificate of Analysis.

Q: What is HACCP and how does it apply to an oil mill?

HACCP (Hazard Analysis and Critical Control Points) is a systematic food safety management approach that identifies physical, chemical, and biological hazards in a food production process and establishes critical control points (CCPs) to prevent, reduce, or eliminate those hazards. For a peanut oil mill, a HACCP plan identifies hazards including: aflatoxin contamination (biological/chemical — CCP at raw material intake and in refinery bleaching), pesticide residues (chemical — controlled through certified supplier approval), physical contaminants (metal, stones — CCP at magnetic separator and destoner), and process deviations (e.g., insufficient refinery temperature reducing mycotoxin removal). Each CCP has defined critical limits, monitoring procedures, corrective actions, and verification records. For EU export, HACCP certification by an accredited third party (SGS, Bureau Veritas, TÜV) is expected and significantly facilitates EU border clearance. This plant obtained SGS HACCP certification 5 months after commissioning.

Q: How does LED optical sorting reduce aflatoxin risk in peanut oil?

Aflatoxin in peanuts is produced by Aspergillus moulds, which typically colonise damaged, shrivelled, discoloured, or immature kernels. LED optical colour sorting (also called colour sorter or optical sorter) uses high-resolution cameras and LED illumination to inspect each individual peanut kernel at high speed (up to 5 tonnes/hour) and reject kernels that are discoloured (yellow-green, brown spots), shrivelled, or visually abnormal. Since Aspergillus-infected kernels tend to have visible mould growth or discolouration, optical sorting removes a high proportion of aflatoxin-containing kernels before pressing. Studies have shown that optical sorting can reduce aflatoxin contamination by 70–90% in groundnuts. This is a critical CCP (Critical Control Point) in the HACCP plan — the sorter at this Vietnam plant rejects approximately 2–3% of incoming peanuts, concentrating aflatoxin in the reject fraction and dramatically reducing contamination in the accepted product stream.

Q: Does bleaching earth remove aflatoxin from peanut oil?

Yes, activated bleaching earth (bentonite clay) has a significant aflatoxin adsorption capacity in the refinery bleaching step. Aflatoxins adsorb onto the clay particles due to their polarity and molecular structure. A well-designed bleaching step using activated bleaching earth at dosages of 1–3% (weight/weight of oil) at 90–100°C under vacuum can remove 60–80% of the aflatoxin present in crude peanut oil. For this Vietnam plant, the starting crude oil aflatoxin level was typically 1–3 μg/kg B1 (after optical sorting pre-treatment). After the refinery bleaching step, aflatoxin B1 in finished refined oil consistently measures below 0.5 μg/kg — well within the EU limit of 2 μg/kg B1. The combination of optical sorting (pre-processing control) + bleaching (in-process control) + finished product HPLC testing (post-process verification) constitutes a robust three-layer aflatoxin management system.

Q: What are the Vietnam groundnut export market opportunities to Europe?

Vietnam produces approximately 400,000–500,000 tonnes of groundnuts annually, primarily in the North Central Coast provinces and Binh Duong/Tay Ninh regions. European market opportunity: the EU imports significant volumes of groundnut oil from Brazil, Argentina, China, India, and increasingly from Southeast Asia. Key advantage for Vietnamese producers: competitive peanut raw material prices, lower labour costs than China, and improving food safety infrastructure post-2018 TRACES reform. The main challenge historically has been aflatoxin compliance — multiple Vietnamese groundnut oil shipments have been border-rejected at EU ports. Producers that invest in HACCP-certified food safety systems (LED sorting, rigorous testing, SGS audit) can access EU buyers at premium prices (€4–5/kg for certified groundnut oil vs ~€2.3/kg domestic market equivalent). This plant achieved €4.2/kg export pricing to a German organic food importer, nearly double the domestic Vietnam value — demonstrating the significant premium available for EU-compliant Vietnamese groundnut oil.

Project Overview

The Challenge

A Ho Chi Minh City food company wanted to export premium groundnut oil to Europe. Vietnam produces high-quality peanuts in Binh Duong and Tay Ninh provinces, but previous Vietnamese groundnut oil exports had been blocked at EU ports — particularly Hamburg — for aflatoxin non-compliance. EU Regulation (EC) No 1881/2006 limits aflatoxin B1 to 2 μg/kg in refined groundnut oil for human consumption.

The company started from scratch with a HACCP-designed plant rather than retrofitting existing equipment. SinoOil's brief was to design a groundnut oil system where EU food safety compliance was built in at every stage — from raw material intake through final packaging.

The Solution

SinoOil designed a three-layer aflatoxin management system within a full HACCP framework:

Layer 1 — Raw material control: Aflatoxin ELISA rapid test station at intake gate (every lot tested before unloading); LED optical colour sorter rejecting discoloured/mouldy kernels at 5T/h
Layer 2 — In-process control: Full DBDW refinery with SS316 contact surfaces; bleaching earth dosage optimised for aflatoxin adsorption (1.5% dosage at 95°C, 30 minutes)
Layer 3 — Finished product verification: HPLC testing of each export lot; SGS-verified Certificate of Analysis accompanying each shipment
HACCP documentation system: SGS Vietnam-audited HACCP plan with CCP monitoring logs, corrective action records, and full batch traceability from farm supply to export container
SS316 food-grade construction throughout all peanut contact surfaces — exceeding EU Regulation (EC) No 1935/2004 food contact materials requirements

Equipment List

#	Equipment	Model / Specification	Qty
1	Aflatoxin rapid test station at intake	ELISA kit, 15-minute result, every intake lot	1
2	LED optical colour sorter	RGB LED, 5T/h, rejects discoloured/shrivelled	1
3	Cleaning screen	TQLZ80, 8T/h	1
4	Peanut dehulling machine	BTM-800, 3T/h	2
5	Roasting drum	CYJ-2.5, 150–170°C	1
6	Screw oil presses (SS316 contact surfaces)	6YL-180, 10 TPD each, SS316 barrel lining	3
7	Plate filter (SS316 plates)	BASY-800, SS316 filter plates	1
8	Batch full refinery DBDW (SS316 vessels)	2T/batch, SS316 throughout, 230°C deodoriser	1
9	SGS-approved production record system	Batch traceability software + paper records	1
10	SS316 storage tanks	10T each, nitrogen blanket	3
11	EU-compliant export packaging line	Semi-auto, 1L/5L glass + HDPE, EU label-ready	1
12	Quality lab (PV, FFA, aflatoxin HPLC)	HPLC system, ELISA kits, standard test equipment	1 set
13	CIP cleaning system	Automated food-grade sanitiser circuit	1
14	Process batch documentation system	Batch record forms, CCP monitoring logs, SGS HACCP	1 set
15	Floor drainage + hygiene stations	GMP-compliant floor design, hand sanitiser stations	Full plant

Project Results

13.5 TPD

Refined Peanut Oil

EU-compliant

<0.5 μg/kg

Aflatoxin B1

EU limit: 2 μg/kg

HACCP

SGS Vietnam Certified

5 months post-commissioning

€4.2/kg

EU Export Price

vs ~€2.3/kg domestic

Hamburg

First EU Export Cleared

No border rejection

Germany

First Client

Organic food importer

"Two years ago Vietnamese groundnut oil was blocked at Hamburg port for aflatoxin. We started from scratch with a HACCP-designed plant and rigorous incoming peanut testing. SinoOil understood the EU market requirements — they are not just selling machines, they helped us design a food safety system. Our first EU container cleared customs without a single issue."

— Export Director, Binh Duong, Vietnam | November 2023

Frequently Asked Questions

What are EU aflatoxin limits for groundnut oil and what is the compliance strategy?

EU Regulation (EC) No 1881/2006 sets maximum aflatoxin levels in groundnut oil: total aflatoxins (B1+B2+G1+G2) maximum 4 μg/kg; aflatoxin B1 maximum 2 μg/kg for refined groundnut oil for direct human consumption. These are among the strictest limits globally. EU border inspection authorities at Hamburg, Rotterdam, and Antwerp regularly test imported groundnut oil. The compliance strategy for this Vietnam plant uses three layers: (1) raw material control — LED optical sorting rejecting discoloured/mouldy kernels plus ELISA rapid testing of every intake lot; (2) in-process control — activated bleaching earth in refinery removes 60–80% of remaining aflatoxin; (3) finished product verification — HPLC testing of each export lot with SGS-verified Certificate of Analysis. This plant achieves aflatoxin B1 below 0.5 μg/kg — well under the EU 2 μg/kg limit.

What is HACCP and how does it apply to an oil mill?

HACCP (Hazard Analysis and Critical Control Points) is a systematic food safety management approach that identifies physical, chemical, and biological hazards in production and establishes critical control points (CCPs) to prevent or eliminate those hazards. For a peanut oil mill, a HACCP plan identifies hazards including: aflatoxin contamination (CCP at raw material intake and refinery bleaching), pesticide residues (controlled through certified supplier approval), physical contaminants (CCP at magnetic separator and destoner), and process deviations (e.g., insufficient refinery temperature). Each CCP has critical limits, monitoring procedures, corrective actions, and verification records. For EU export, HACCP certification by SGS, Bureau Veritas, or TÜV significantly facilitates EU border clearance. This plant obtained SGS HACCP certification 5 months after commissioning, enabling the first successful EU export shipment to Hamburg.

How does LED optical sorting reduce aflatoxin risk in peanut oil production?

Aflatoxin in peanuts is produced by Aspergillus moulds, which typically colonise damaged, shrivelled, or discoloured kernels. LED optical colour sorting uses high-resolution cameras and LED illumination to inspect each individual peanut kernel at high speed (up to 5T/h) and reject kernels that are discoloured, shrivelled, or visually abnormal. Since Aspergillus-infected kernels tend to have visible mould growth or discolouration, optical sorting removes a high proportion of aflatoxin-containing kernels before pressing. Studies show optical sorting can reduce aflatoxin contamination by 70–90% in groundnuts. This is a critical CCP in the HACCP plan — the sorter at this Vietnam plant rejects approximately 2–3% of incoming peanuts, concentrating aflatoxin in the reject fraction and dramatically reducing contamination in the accepted product stream used for oil extraction.

Does bleaching earth remove aflatoxin from peanut oil?

Yes, activated bleaching earth (bentonite clay) has significant aflatoxin adsorption capacity in the refinery bleaching step. Aflatoxins adsorb onto clay particles due to their polarity and molecular structure. A well-designed bleaching step using 1–3% activated bleaching earth at 90–100°C under vacuum for 30 minutes can remove 60–80% of aflatoxin present in crude peanut oil. For this Vietnam plant, crude oil aflatoxin B1 was typically 1–3 μg/kg after optical sorting pre-treatment. After refinery bleaching, aflatoxin B1 in finished refined oil consistently measures below 0.5 μg/kg — well within EU's 2 μg/kg limit. The combination of optical sorting (pre-processing) + bleaching (in-process) + HPLC testing (post-process verification) provides a robust three-layer aflatoxin management system delivering consistent EU compliance.

What are the Vietnam groundnut export market opportunities to Europe?

Vietnam produces approximately 400,000–500,000 tonnes of groundnuts annually. European market opportunity: the EU imports significant volumes of groundnut oil from Brazil, Argentina, China, and India. Key advantage for Vietnamese producers: competitive peanut raw material prices, lower labour costs than China, and improving food safety infrastructure. The main challenge historically was aflatoxin compliance — multiple Vietnamese groundnut oil shipments have been border-rejected at EU ports. Producers investing in HACCP-certified systems (LED sorting, rigorous testing, SGS audit) can access EU buyers at premium prices: €4–5/kg for certified groundnut oil versus ~€2.3/kg domestic value — nearly double. The EU-Vietnam Free Trade Agreement (EVFTA, effective August 2020) eliminates tariffs on many food products including groundnut oil, further improving the economics of the EU export route for compliant Vietnamese producers.