The opening scene:

At first light in White River, the production floor is still quiet. Overnight deviations are on screen, temperature logs line up with critical limits, and training gaps are flagged for the day. By the time the line starts, Marelise van Deventer has already set the tone: prevention first, proof on file, people prepared.

That habit, more than any title, explains her rise from retail operations to Food Safety and Quality Control Manager at Mac Masters International.

“Excellent food safety lives in the details. Every reading, every record, every training session counts.”

The making of a practitioner

Many dismiss retail as shelf stacking. Marelise treated it as a systems classroom. At Pick n Pay she learnt the rhythm of deliveries and the value of traceability. Supplier hiccups taught her why documentation protects businesses when products move fast. Stock control drilled the basics that later become audits: what was received, what moved, what is left, and where the evidence lives.

Those routines looked simple at the time. They became the base of her food safety career.

Eight years that shaped a specialist

In 2017 she joined Golden Macadamias. Logistics coordination showed her how a premium crop moves from farm to export container. Warehouse leadership added the realities of certification, grading and dispatch. Over eight years she managed quality for thousands of tonnes, worked to South African export standards for multiple buyers, and learnt a hard truth about the sector: global markets do not forgive inconsistency.

Procedures matter. Check points exist for a reason. Teams make systems work.

The step up

In 2025 she took on a new brief at Mac Masters International, a White River processor supplying premium in-shell and kernel macadamias to global customers. The company needed someone equally at ease with the standard and the factory floor, someone who could take a team through demanding external audits without turning the process into a paperwork drill. Marelise fit the brief.

A day built for readiness

• Early morning: scan deviations, validate temperature and allergen controls, review supplier schedules, assign training touchpoints.
• Mid-morning: on the floor. Walk the line, check behaviours against procedures, listen to operators, correct where reality has drifted from the written method.
• Afternoon: documents and risk. Update hazard analyses, close corrective actions, refresh supplier approvals, plan internal audits, verify HACCP records.
• Late afternoon: people. Coach, mentor, and build confidence so the system runs even when managers are not watching.

Why the Lowveld matters

South Africa remains the world’s largest producer by volume, and the Lowveld is its engine room. For context, global macadamia output in 2024 was estimated at about 338,000 tonnes in-shell at 3.5% moisture, with South Africa at the front of the pack.

Seasonal forecasts move as the harvest unfolds. South Africa’s 2025 crop started with a preliminary modelled estimate of 93,588 tonnes DNIS at 1.5% moisture, later revised by industry updates to about 85,166 tonnes DNIS after weather impacts. When you quote volumes, keep the moisture basis next to the number so readers can compare like for like.

“In macadamia processing, ‘good enough’ does not exist. Every nut that leaves the facility carries our reputation.”

Keeping current: FSSC 22000 Version 6 in practice

Marelise completed Version 6 training in 2025 and runs the system with a practical focus. Version 6 has been mandatory for audits from 1 April 2024, and it raises expectations in areas that matter for nut processors.

What this looks like on the floor:

• Food safety and quality culture. Keep a written plan with goals, roles and evidence of behaviours on the floor. Track progress, not posters.
• Allergen and label control. Formal checks at every release step, even in low-allergen categories.
• Outsourced processes. Risk-assess and actively oversee storage, fumigation or transport that sits outside your walls. Keep criteria, approvals and performance records.
• Environmental monitoring. A risk-based programme suited to low-moisture products, with defined sites, frequency, actions and trend reviews.
• Food defence and fraud. Threat and vulnerability assessments with tested controls and incident response paths.
• Quality control requirements. Version 6 is explicit about measurable quality criteria alongside safety limits, so teams catch drift before customers do.

What sets her apart

Floor credibility and system fluency. She has run real lines, received urgent deliveries and resolved issues with export-level consequences.

Audit preparation that goes beyond binders. The files are in order, and so are the people who use them. Staff can explain the why, not only the what.

Export awareness. International buyers expect strict grading, controlled moisture, tight traceability and reliable pest management. Meeting those terms protects access and price.

Team development. Robust systems are built through coaching, not reminders. The goal is a culture where correct behaviour is the default.

The audit on the horizon

External auditors will arrive with healthy scepticism. They will check document control, risk assessments, prerequisite programmes, training competence, supplier approvals, bidirectional traceability, and proof that corrective actions worked. The aim is simple: no surprises, no loose ends.

The business case for doing it right

Great quality control specialists do not add cost, they prevent it. They reduce recall risk, protect accreditations that open markets, and support premium pricing through consistent delivery. In a sector where one failure can shut doors far away, the return is measured in contracts kept and reputations intact.

At a glance

• Role: Food Safety and Quality Control Manager
• Company: Mac Masters International, White River
• Standard: FSSC 22000 Version 6 in place and audited from April 2024 onward
• Sector context: Global 2024 macadamia output ~338,000 tonnes in-shell; South Africa remains the top producer. 2025 SA crop guidance revised to about 85,000 tonnes DNIS as the season progressed.

Sources

• International Nut & Dried Fruit Council. Macadamias: Global Statistical Review. 13 Mar 2025. (Preliminary SA 2025 estimate: 93,588 t DNIS / ≈95,500 t @3.5%.)
• Produce Report. Global Macadamia Market Outlook for 2024. 29 Jul 2024. (INC estimate: ~338,000 t in-shell @ 3.5% moisture.)
• FreshPlaza. Zero-rated South African macadamia exports to China will soften blow of U.S. tariffs. 16 Jul 2025. (SA 2025 revision to ~85,166 t DNIS, citing SAMAC.)
• FSSC. FSSC 22000 Version 6 becomes mandatory as of 1 April 2024. 1 Apr 2024.
• FSSC. FSSC 22000 – Version 6 (Scheme documents). Accessed 13 Aug 2025.
• Mac Masters International. Contact & Facility (White River, South Africa). Accessed 13 Aug 2025.