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
Pistacia vera
Pistachio
Pistachios are a premium nut where extended shelf life directly translates into commercial flexibility and higher revenue. However, long-term storage comes with specific biological and environmental risks that require precise control.
Unlike many other nuts, pistachios carry a higher inherent risk of aflatoxin contamination if moisture and fungal growth are not properly controlled. While they are less prone to oxidative rancidity due to their fatty acid composition, they remain sensitive to insects, temperature fluctuations and storage duration. Industry guidelines require pistachios to be dried to very low moisture levels before storage, with narrow limits for temperature and relative humidity. Maintaining these ideal conditions over long periods and complex logistics chains is challenging. Without airtight protection, quality degradation, shell staining and pest damage can quickly reduce market value.
Challenges in pistachio preservation
High-risk storage
Pistachio preservation is primarily defined by food safety risks. Aflatoxin development is a major concern when moisture levels rise above safe thresholds, making precise moisture control essential. Insects such as pistachio seed wasp and carob moth can damage kernels internally, often going unnoticed until quality is compromised. Temperature increases during storage or transport can accelerate shell staining, texture loss and quality decay.
At the same time, pistachios are often stored for long periods to balance supply and demand. Conventional storage relies heavily on strict climate control or cooling, increasing operational costs and complexity. A solution that maintains quality while reducing dependency on external conditions is critical.
- Aflatoxin risk
- Insect infestation
- Shell staining
- Moisture control
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The VacQPack solution for pistachios
Safe flexibility
VacQPack protects pistachios using bulk-sized Modified Atmosphere Packaging (MAP) that creates a low-oxygen, controlled inner environment independent of external storage conditions. High-barrier liners limit oxygen and moisture transmission, reducing fungal growth and aflatoxin risk while eliminating insects organically. Unlike conventional methods, VacQPack allows higher storage temperatures to be used strategically to combat pests without harming taste, firmness or kernel integrity. This enables extended storage beyond one year, safer logistics and consistent pistachio quality without chemical fumigation or intensive cooling.
- 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
Discover why customers like to work with us
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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