Preserving Peanut Quality Under Hermetic Storage
Peanuts travel long distances and often remain in storage for extended periods. During that time, quality loss is a persistent concern. Rising free fatty acids, flavour deterioration and mould risks
Helianthus annuus
Sunflower seeds
Sunflower seeds are an oil-rich commodity where storage stability directly determines quality, safety and yield. Moisture, oxygen and insect control are critical to prevent rapid deterioration during storage and transport.
After harvest, sunflower seeds remain metabolically active and highly sensitive to their environment. Excess moisture activates fat-cleaving enzymes, accelerating respiration, self-heating and quality loss. At the same time, unsaturated fatty acids react quickly with oxygen, leading to rancidity—especially in shelled kernels. Insect infestation further increases losses through weight reduction and contamination. Conventional packaging often fails to protect against condensation, oxygen ingress and pest penetration. For long-term storage and logistics, sunflower seeds require airtight, watertight and palletized solutions that stabilize internal conditions while ensuring safe handling and transport.
Challenges in sunflower seed preservation
Oil under stress
Sunflower seed preservation is dominated by oil instability. Moisture triggers enzymatic fat breakdown, which increases respiration and internal heat, creating a cycle of accelerating degradation. Oxygen exposure causes oxidative rancidity, particularly after shelling, reducing taste and market value.
Insect pressure is another major challenge, with beetles, moths and mites causing direct losses and contamination. Seeds also release carbon dioxide during respiration, which can accumulate to hazardous levels in poorly ventilated storage. Traditional packaging struggles to balance airtight protection, moisture control and safe gas management, especially in bulk handling. Effective preservation requires a solution that stabilizes oil quality, limits biological activity and prevents infestations without introducing metals or chemical residues.
- Oxidation & rancidity
- Moisture activation
- Insect infestation
- Self-heating risk
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The VacQPack solution for sunflower seeds
Controlled stability
VacQPack preserves sunflower seeds using hermetic bulk-sized Modified Atmosphere Packaging (MAP) with high-barrier, seven-layer EVOH liners. By reducing oxygen through vacuum and controlled gas flushing, VacQPack slows respiration and prevents oxidative fat cleavage. The watertight, gastight packaging stabilizes moisture, protects against condensation and blocks insect entry while enabling organic pest eradication using COâ‚‚ when needed. Fully palletized and metal-free, the VacQPack solution ensures safe handling, extended shelf life and consistent sunflower seed quality during long-term storage and global transport.Â
- Consistent product quality and taste
- Reduced food loss and waste
- Full control over product safety
- Optimized total cost of ownership (TCO)
- Non-chemical, organic treatment
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Best practice
Learn how customers across different commodities use VacQPack as a best practice for quality protection. By applying natural MAP, they prevent insects, control moisture, and safeguard product value throughout storage and transport.
Particularly on humid and hot areas, problems like condensation, variation of moisture content, oxidation and in some cases insect infestation, are common on the difficult task of keeping the quality of soybean seeds during storage.
The refrigeration is the conventional technique for preservation, but it requires a great deal of investment on infrastructures and implies significant expenditures on energy. Besides, once the seed leaves the refrigeration mode, gets again vulnerable and enters in a rapid degradation process.
Infisght from our research expert
Marie-José
Research Expert
m.vanlitsenburg@vacqpack.com
Our research Expert Marie-José translates scientific studies into practical MAP insights, helping producers safeguard quality from origin to arrival.
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