Once produce leaves the field it enters a risky journey: respiration, water loss, disease, mechanical damage and temperature swings all erode quality and value. In many developing countries, post-harvest losses for fruit and vegetables can reach a significant share of output. Post-harvest technology is the decisive link that preserves the value created on the farm.
The nature of post-harvest loss
Post-harvest loss is not only visible spoilage. It includes losses in weight, nutritional quality, commercial value and food safety. Causes range from mistimed harvesting and inadequate handling to weak cold chains, poor packaging and rough transport.
Crucially, most of these losses are preventable with the right techniques and infrastructure. Investing in post-harvest technology often yields higher returns than focusing on yield alone.
Key technology groups
There is no universal solution; each commodity needs a combination suited to its physiology and target market.
- Cold storage and cold chains: lowering temperature to slow respiration and microbes.
- Modified atmosphere packaging (MAP): adjusting gas ratios to extend freshness.
- Rapid freezing and advanced systems: preserving cell structure for high-value products.
- Drying: heat-pump, cold and solar drying for value-added processing.
- Heat treatment and irradiation: hot-water, hot-vapour and irradiation for quarantine and export.
Handling and cold-chain organisation
Proper handling at the production site, including cleaning, grading, pre-cooling and packing, sharply reduces loss before products travel far. Yet a continuous cold chain from harvest to consumer remains a major bottleneck.
- Pre-cool immediately after harvest to remove field heat.
- Grade by ripeness and size to optimise storage.
- Monitor temperature continuously along the chain.
Produce value does not end at the furrow; it is preserved or lost at every post-harvest step.
Infrastructure investment and value creation
Post-harvest technology requires capital and operating skills, but delivers lasting benefits: less waste, longer market reach, export potential and steadier farmer incomes. Choosing the right technology scale for local cooperatives and enterprises is essential to avoid over-investment.
ASTRI Institute treats post-harvest technology as a priority within its mission to support agriculture through science and technology. Through research, training and advice on solutions tailored to each region, the Institute aims to cut losses, raise value and strengthen the competitiveness of Vietnamese produce.