Instructions on how to preserve coffee rice and coffee beans

Coffee rice is not yet grinded, the kernel has been dried or dried, it has a hard shell like the husk of rice, but has lost the outer shell of rice so the farmer calls it rice coffee.

After grinding dried fruit coffee, we get green coffee and coffee husk. These coffee kernels are collectively known as bucket coffee. Newly separated from shells, small seed nuts have not been classified.

By the harvest season, the farmers become busier with fresh coffee fields. Currently, most of our farmers still harvest and preserve manually, depending on the weather.

This is a very important stage. Proper storage will help ensure the best and best quality coffee.

If not preserved properly, the farmer is a great bearer. Just lost the price, both affect the quality of coffee brought to the market.

Factors affecting storage process:

External ambient temperatur

Air humidity

Moisture of coffee beans

The temperature of the coffee block

Air permeability

Common methods:

Closed storage:

What is sealed storage? This is a measure to preserve or not present O2. When O2 deficiency is present, the respiratory processes of the living components almost completely cease, it changes to aerobic respiration. Microorganisms are similar to humans, requiring O2 to breathe. When O2 deficiency, the living activities of the microorganisms are stalled because the coffee beans are mainly aerobic microorganisms, the insects are destroyed. One commonly used method to reduce O2 gas is that it can be added to a mass of CO2.

Preserved in dry state:

– Sun drying – take advantage of the available weather.

– Drying with hot air

– Drying with dry air

– Using water absorption chemicals such as H2SO4, CaCl2 …

Store in a well-ventilated state:

The air blowing into the grain should meet the following conditions:

– Air must be faned evenly throughout the grain.

– Need to ensure a sufficient amount of dry and cool air to achieve the purpose of reducing the temperature and humidity of the grain.

– Fan only when the humidity of outdoor air is low, meaning that after the fan, the moisture content of the particle must be reduced.

– The outdoor air temperature must be lower than the temperature of the grain.

The basis of the positive ventilation preservation method is to take advantage of the loophole of coffee beans that fan the air dry and cool into the grain mass many times, with the aim of reducing the temperature and humidity of the coffee beans. .

Store in low temperature state:

At low temperatures, the life of coffee beans, microorganisms, insects … is limited. The method is carried out by fanning cold air and dry air into coffee beans. Due to the poor conductivity of coffee beans, the cold air is retained in the grain for a long time, limiting the living activities of coffee beans to help the coffee beans be preserved for a long time.

With weather conditions in our country, this method is usually not applicable, but can take advantage of some cold and dry days of winter.

Preserving in bags: (sacks, cloth bags …) This is a popular method that is widely applied. When preserving, the following points should be taken into account:

– Humidity of green coffee in storage must be less than 13%

– The less impurity in coffee, the better, for grade I, II coffee with impurities <0.5%

– Choose storage with good heat and moisture

– Must disinfect and clean the warehouse before arranging bags

– Do not place directly on the ground and close to the wall: 0.3 m away, 0.5 m from the wall.

– In order to avoid encapsulation of bags due to the compressive strength of the upper covers, every 3 weeks must be reversed the order of packing.

Dump into loose piles:

In essence, it is preserved in silos. In order to save packaging and preserve for a longer time, people often preserve green coffee in well-closed corrugated silos, concrete, or wood. The advantage of this method is that in addition to saving packaging and increasing storage time, it can be saved.

Duong Cafe Co.ltd

Adress: 107C Minh Khai, Phường Minh Khai, Quận Hai Bà Trưng, TP.Hà Nội
Hotline: 0912 104 901
Email: duongtamthanh@gmail.com – info@duongcafe.com

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