Technology transfer for processing and preserving agricultural products

The Southeast Lam Dong region has farms, cooperatives, and farming households that produce many types of agricultural products every year; processing and preserving to increase the value of agricultural products is always of interest to everyone. The conference introducing technology and equipment in agricultural and food processing organized by the Provincial Center for Science and Technology Application recently supported people with the necessary information above.

MSc. Tran Chi Thanh (2nd, left) introduces some agricultural processing products to cooperatives and agricultural farms.

MSc. Tran Chi Thanh, Sac Moc Tinh Company Limited (Ho Chi Minh City) shared about agricultural and by-product processing technologies with low initial investment costs. The scientific basis of the new technology was introduced by the speaker for everyone to understand. Specifically, jackfruit latex, or peels of fruits: oranges, tangerines, apples, pears... with astringent and bitter substances are all treated with high alkaline pH to create neutralizers. The application of enzyme technology to process agricultural products at a boiling temperature of 100 ^o C for 1 - 5 minutes, immediately soak in cold water, through a dryer, and dry in the sun to dry the product, eliminating microorganisms and mold growth.

To synchronize this process, new technology supports the design of sun-drying houses, automatic temperature compensation by electricity, through the application of solar energy integrating moisture separation technology into agricultural processing. By the innovative designs of the equipment such as solar heat traps placed above the dryer, or placed on the factory roof, integrating moisture separation technology for agricultural and seafood; controlling drying temperature; sterilizing microorganisms and molds with UVC technology; automatic control and monitoring. The application of solar-powered agricultural drying with moisture separation technology is currently designed conveniently, not requiring a large area: a 60 ^m2 drying house can dry 200 kg/batch. The product after drying maintains its nutritional content, and the temperature can be controlled as desired. Multi-function dryers using solar energy save energy, reduce emissions; increase product uniformity and dry quickly; keep the original shape, original color, original taste; food safety, longer preservation and labor saving.

The above method overcomes traditional agricultural processing, such as the step of drying agricultural products in the sun, which requires a lot of space and is easily damaged by sudden rains and birds. Some products do not dry as expected after drying in the sun. The step of freezing seafood consumes a lot of electricity, requires a large freezer, and is difficult to transport. Or drying by heating with fuel or electricity takes a lot of time, fuel, and has a small drying capacity.

Preservation using biological lipid coating technology will keep dragon fruit fresh longer.

“The design of a sun-drying house, with automatic temperature compensation by electricity, is used to dry agricultural and seafood products in the Southeast region of Lam Dong province such as: drying candied dragon fruit peel, candied grapefruit peel, dried mango, dried longan, cashew nuts; processed products such as: winter melon tea, dried white young jackfruit. Along with that, the technology of biological lipid coating, through the steps of sterilization with nano silver, reduces oxygen exposure, reduces heat and cold exposure; preserves fresh fruit for 1-3 months at 4 ^degrees Celsius”, shared Master Tran Chi Thanh.

Recently, through an order from the Suoi Da Organic Dragon Fruit Agricultural Service Cooperative (Ham Thuan Bac commune), Sac Moc Tinh Company has transferred technology and assembled a cool temperature dragon fruit preservation system with a quantity of 100 tons for the Cooperative, creating convenience for exporting dragon fruit to China.

Mr. Nguyen Van Trung - Deputy Director of the Provincial Center for Science and Technology Application said: "Introducing technology and equipment in agricultural and food processing to improve the quality of agricultural and seafood products after harvest to serve the production and business of the province's key and advantageous products, contributing to diversifying products to serve domestic and export needs; increasing community income, aiming at sustainable development of agricultural products".

Source: https://baolamdong.vn/chuyen-giao-cong-nghe-che-bien-bao-quan-nong-san-398207.html