![]() ![]() Lengthy storage times can lead to a qualitative and quantitative decline in the beans. Even if they arrive at a warehouse without stowaways, pests can find their way to the warehouse. Most of the shipments from developing countries are treated and certified as pest-free before shipping. These insects burrow their way into the coffee bean. Coffee beans can also be infected with insects such as psocids. A coffee bean’s weight can be reduced by one-third within six months from coffee weevils. Most pests need moisture to survive, so they are attracted to unroasted coffee beans. The traditional burlap and jute sacks pose the biggest risk for pest infestations, especially if the beans are not dried to the recommended levels. Experts recommend storing green coffee beans in a dark place or in an opaque container. Additional exposure to direct sunlight will dry out the beans, thereby reducing flavor and aroma. At this point, however, the bean’s days under bright lights should be over. ![]() This process will take the moisture levels down from about 50 percent to 11 percent. At this stage of the coffee bean’s journey, being under bright light is exactly what they need. This is cost effective since it doesn’t require any special equipment. Most producers dry their harvested coffee beans under the sun. Even if you can avoid the aroma and flavor problem, the temperatures are too extreme at 0 to 40 degrees Fahrenheit. The issues of absorbing aromas and flavors arise. You’ve probably heard of freezing or refrigerating beans. Depending on who you consult, room temperature could mean anywhere between 60 degrees or 77 degrees Fahrenheit. Many experts suggest storing beans at room temperature. This leads to the logical conclusion that cool air is better for green bean coffee storage. In other words, warmer air means more moisture in the air and cooler air means less moisture in the air. Temperature LevelsĪs air temperature rises, it can retain more water molecules. Moisture levels are a significant quality control issue. Lower humidity will result in your beans drying out and losing flavor. Higher humidity will result in mold growing on your beans. When the coffee beans have been stored in an environment where the humidity is stable (about 60%), roasters can feel confident they are brewing fresh coffee. Note: some specialty coffees have different moisture standards.Īs you can see, the margin for error from shipping to brewing is very small. This is the moisture level recommended by the International Trade Centre. By the time the raw beans are packaged for shipment by producers, the moisture content has reached about 11 percent. When coffee beans are picked but not yet processed, they contain about 50 percent moisture. Moisture levels of green coffee beans change as they make their way from harvesting to roasters. Fortunately, packaging experts continue to innovate, taking the following vital aspects of coffee bean storage into account: Too porous and not porous enough are the two extremes of packaging coffee beans. This can lead to faded green beans and reduced aroma and flavor. So again, there are problems with moisture content. The problem with plastic bags is that condensation builds up. On the other end of the spectrum from permeable woven bags, are plastic bags. The truth, however, is that storing porous coffee beans in porous bags leads to problems with moisture content. ![]() Pictures of farmers with stacks of these bags are common. When the average person thinks of bulk coffee storage, images of burlap or jute sacks of coffee beans come to mind. For example, if you store your fresh green coffee beans near garlic – the beans will take on the aroma and flavor of garlic! This means they readily absorb and retain moisture. Green coffee beans are porous and hygroscopic. What Are the Different Methods of Storing Green Coffee Beans? Since the coffeehouse culture exploded in the United States in the ’90s, expertise on how to store coffee beans has grown. From harvesting to brewing, how your coffee beans are stored will determine how your customers experience your coffee. This is where proper storage practices of your green coffee beans come into play. However, the quality controls that lead to cup-after-cup of delicious coffee begins before roasting. It begins with high-quality beans and continues with a good roasting system and a good brewing system. Home » News & Trends » News » How to Properly Store Your Green Coffee Beans Before RoastingĪll great coffee roasters know that the key ingredient to running a successful coffee shop is brewing high-quality coffee. ![]()
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