Optimizing post-harvest drying process – A breakthrough in improving agricultural product quality with SUNSAY freeze dryer

In the agricultural sector, harvesting is only half the battle. The rest – and the part that determines the economic value of agricultural products – depends entirely on the post-harvest processing. Optimizing the post-harvest drying process is becoming a strategic keyword that businesses, cooperatives and producers cannot ignore if they want to bring their products to larger markets, especially for export.

Drying is no longer the “drying for easy preservation” step as before. Nowadays, drying is the step that determines the sensory, nutritional content, microbiological safety and competitiveness of the product. And in the trend of increasing the value of agricultural products through deep processing, the SUNSAY freeze dryer is a pioneering technology – helping to standardize the entire drying process, ensuring products of stable quality, high aesthetics and meeting international standards.

SUNSAY heat dryer has two separate drying chambers, can dry a variety of products together to increase production productivity.
SUNSAY heat dryer has two separate drying chambers, can dry a variety of products together to increase production productivity.

Post-harvest drying: a long-standing weakness of Vietnamese agricultural products

Vietnam is one of the countries with large agricultural output, with a variety of fruits, vegetables, medicinal herbs and seafood. However, while the output is large, the rate of agricultural products meeting deep processing standards is still very modest. One of the main reasons lies in the post-harvest processing stage, especially drying – a stage that is often overlooked, done based on experience or with rudimentary equipment, lacking control.

Many production facilities are still using sun drying, wood drying, or electric drying methods but cannot control the temperature, humidity and time properly. As a result, the products are often uneven, easily moldy, discolored, odorless or burnt at the edges – leading to not meeting quality requirements when exporting, being rejected or having to sell at low prices.

Meanwhile, in markets such as Japan, Korea, Europe or America, dried products not only need to be clean but also need to retain their natural color, characteristic flavor and nutritional content. This is where modern drying technology – especially the SUNSAY freeze dryer – becomes a practical and sustainable solution.

Convection drying process in cold dryer is simple and easy to operate
Convection drying process in cold dryer is simple and easy to operate

Normalization is the first step of optimization.

When it comes to optimizing the drying process, people often think of saving energy, increasing productivity or reducing labor. But in reality, before optimizing, the process must be standardized. That means, each step in the drying process must be precisely controlled: temperature, humidity, wind speed, time, material arrangement, tray density…

SUNSAY freeze dryer helps the production unit to master all those parameters thanks to the automatic control system, allowing customization and storage of drying formulas for each type of raw material. This not only helps the drying batches achieve consistent quality, but also helps the operator not to have to intervene too much manually – avoiding errors and dependence on skills.

For example, to dry mango, the machine can maintain a stable temperature of 40°C, humidity of about 20%, for a period of 18–24 hours. Similarly, with medicinal herbs, lower temperatures can be chosen to retain enzymes and bioactive compounds. Thanks to that, the drying process is no longer “guessing” but becomes a scientific process.

Convection drying technology is a prominent feature of freeze dryers on the market today.
Convection drying technology is a prominent feature of freeze dryers on the market today.

Preserving the true value of agricultural products

The economic value of agricultural products lies not only in weight or sweetness but also in the content of nutrients, antioxidants, aromas and natural colors. With traditional drying technology, most of these elements will be seriously lost due to the impact of high heat. That is why hot drying often causes the product to change color, lose its smell and reduce vitamins.

SUNSAY freeze dryer completely overcomes that weakness thanks to the low temperature drying mechanism, dry air circulation and precise humidity control, helping the ingredients to be “gently dried”. Thanks to that, the plant cell structure is not broken, the enzymes are still active, the color is still fresh and the flavor is kept as original.

This is not only a technical advantage – but also a commercial value: products that retain flavor and nutrients will have a higher selling price, easily access high-end distribution chains, and meet strict testing requirements in export markets.

40 tray freeze dryer has beautiful design, dries corn effectively, high capacity
40 tray freeze dryer has beautiful design, dries corn effectively, high capacity

From uniformity to sustainable productivity

One of the biggest barriers to small businesses expanding is the lack of consistency in product quality. Each batch produces a different result – and this makes it difficult to build a brand. No customer will be loyal to a product that “has a different experience every time”.

The SUNSAY freeze dryer solves that problem with the ability to program and duplicate drying formulas. You can dry a batch of jackfruit today, and be sure that a month later, the results will be exactly the same. This is especially important for businesses that want to bring their products to supermarkets, e-commerce platforms or export officially, because uniformity is a mandatory criterion in modern distribution.

Furthermore, optimizing the drying process is not just about quality – it also affects productivity and profitability. An efficient system saves energy, reduces labor, increases production cycles and reduces waste. This is the basis for growing in scale without increasing operational risk.

High quality SUNSAY convection freeze dryer, evenly dries products
High quality SUNSAY convection freeze dryer, evenly dries products

Technology helps – but people are still at the center

SUNSAY not only sells machines, but also provides a complete training and process transfer solution. That means, the business does not only own a device – but owns a system of in-depth drying knowledge and experience, drawn from hundreds of practical models.

SUNSAY’s technical team directly surveys raw materials, establishes formulas, provides operating instructions and checks output results with customers. This process not only helps businesses use the machine effectively, but also understands the nature of the technology, thereby confidently developing more different product lines.

This is especially important for agricultural startups, small cooperatives or businesses moving into deep processing – units that need technical companionship, not just a machine.

The future of agriculture is not about volume – it is about added value

For many years, Vietnamese farmers have produced a lot but their profits have remained low because they exported mainly raw materials. To change that, there is no other way but to increase the value of agricultural products through processing – of which drying is the first step, easy to implement, low risk and suitable for production characteristics in Vietnam.

Customers are very satisfied with the cold dryer and the dried product
Customers are very satisfied with the cold dryer and the dried product

However, if we continue to dry in a “just for show” manner, the product will never overcome the technical barrier, the selling price will remain low, and the brand will not be formed. Only when we optimize the post-harvest drying process, making it part of the production strategy, can we create a breakthrough.

And to do that, SUNSAY freeze dryer is the strategic choice: a technology designed to retain the essence of agricultural products, creating beautiful – clean – nutritious products, competitive enough not only domestically but also internationally.

Contact for quote and consultation

SUNSAY freeze dryer is a product researched and designed by engineers with more than 15 years of experience in Vietnam with the mission of improving the value of processing and preserving Vietnamese agricultural products as well as contributing to solving the problem of Post-processing accounting of Vietnam’s agricultural industry.

SUNSAY dryer offers a completely new solution that saves time, reduces investment costs for users, improves productivity, and brings high economic efficiency. With a reasonable price, SUNSAY Vietnam believes that this device is completely worth investing in and using for a long time to bring the most optimal results.

For detailed advice, please visit the website: kynghexanh.com.vn or immediately contact Hotline (Zalo): +84 935 995 035 or switchboard number: +84 94 110 8888 for support.

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