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How Do They Decaffeinate Organic Coffee?
Organic coffee is produced without synthetic chemicals, providing a refreshing beverage that’s both healthy and flavorful. Non-organic varieties may still contain trace chemicals from both its plant sources as well as handling processes – including insecticides and fungicides that may remain after harvesting.
Organic products provide an eco-friendly option, supporting farms that grow their beans under an arbor, protecting biodiversity and maintaining soil fertility – while helping keep specific regional ecosystems alive. But how are these organic beans decaffeinated?
Solvent-Based Method
Coffee “beans” naturally contain caffeine, yet many consumers desire a caffeine boost without keeping them awake at night. Luckily, coffee beans can be processed prior to being roasted so as to extract most of its caffeine – by employing various methods, producers are able to rid green beans of their caffeinated content while simultaneously maintaining many flavor compounds responsible for creating its delicious aroma and taste.
One of the most commonly used methods of decaffeination involves soaking coffee beans in an organic solvent such as methylene chloride or ethyl acetate that binds with caffeine in order to extract it from the bean, followed by steaming to remove any remaining residue of this process before roasting. As these solvents are strictly regulated and considered safe for human consumption, virtually no residue remains behind from this method of decaffeination.
This method was first pioneered in Switzerland and is commonly known as direct solvent-based decaffeination process. Coffee beans are first steamed to open their pores before being immersed repeatedly into a chemical solution (originally benzene but now usually either methylene chloride or ethyl acetate) that binds caffeine efficiently for easy extraction. Finally, after being in contact with this solution for long enough, these beans are again steamed to remove all traces of solvent before roasting takes place.
Another method for extracting caffeine is through non-solvent methods that use gaseous carbon dioxide instead of chemical solvents to do it – known as supercritical CO2 (SCC) method, is rapidly growing in popularity as an organic certification is no longer required to use this technique. Furthermore, SCC decaffeination techniques are far more environmentally-friendly than their solvent-based counterparts and can even be done at the point of production to lower transport costs while still maintaining quality green beans.
An indirect solvent-based method for eliminating caffeine is also a popular approach, using a different kind of chemical solvent than those employed by direct methods. Ethyl acetate (CH3CO2C2H5) is considered more natural than most solvents as it occurs naturally in apples and blackberries when they ripen; hence its popularity among producers looking to make their product appear “natural.” Sugarcane-sourced ethyl acetate often provides this unique option as the source for decaffeination with this unique process for decaffeination purposes – an added plus for labelling their product with “natural” labels!
Swiss Water Process
The Swiss water process is one of the safest chemical-free ways to decaffeinating coffee. First developed in Switzerland in the 1980s, this technique uses fresh, clean water to coax caffeine molecules from green coffee beans without destroying their unique taste and cup quality. Plus, this technique works on coffee from all regions so it’s great for maintaining their distinct characteristics!
Start with boiling fresh, cold water that contains all of the extractable compounds found in coffee beans (except caffeine ), so osmosis will remove caffeine through natural means from these beans and make decaffeinated ones available for sale to roasters who will then craft delicious cups of joe for us to enjoy!
Peet’s partners with expert companies like Swiss Water to decaffeinate our organic, sustainably sourced and fair-traded coffees. At Swiss Water’s facilities in Virginia and Tennessee are teams comprised of cupping lab managers, roasters, baristas, Q graders, scientists and engineers that work tirelessly together to ensure each batch of decaf meets our stringent standards for decaffeination; tasting coffee before and after processing as well as sampling the raw water used during this process!
When you taste our decaffeinated organic coffee, you’ll discover its flavor is nearly identical to regular coffee due to Swiss water method which ensures almost complete removal of caffeine while leaving other flavor compounds undisturbed. The only real differences include slightly altered aroma and trace levels of chemicals such as ethyl acetate (though well below EPA limits).
As part of our commitment to environmental responsibility, we use the Swiss Water Process for decaffeinating. This eco-friendly method uses clean water that returns most of it back into local communities for reuse, while being much faster than chemical-based options – taking just 10 hours from start to finish!
Physical Method
Physical decaffeination involves immersing green beans in water or another liquid that removes caffeine, before straining through activated carbon to collect it. Although less harsh than chemical solvents, physical decaffeination still presents challenges: for one thing, multiple cycles of soaking may be needed before all caffeine has been extracted from them; additionally, solutions must match up well with each variety of bean so as to preserve its distinctive flavors during this phase.
Organic decaffeination methods don’t rely on chemicals; for instance, two of the most widely-used methods don’t use any at all: Swiss Water Process and Carbon Dioxide Filtration are two great examples of non-chemical methods of caffeine removal that can help pregnant or breastfeeding mothers feel safer during this process. Swiss Water Process soaks raw beans in water before filtering through activated carbon to remove caffeine – something chemical-based methods cannot do. Since its introduction in 1930s it has become a popular alternative to chemical-based methods; especially beneficial when using activated carbon filters because this does not involve chemical solvents like chlorine dioxide. Both methods use carbon filters which emit no carbon.
The carbon dioxide method involves passing superheated carbon dioxide through beans to dissolve and remove caffeine, leaving other elements essential to its distinctive flavour undamaged while simultaneously being an environmentally-friendly choice.
As some brands combine these approaches, be sure to read and inspect the label! Look out for terms like solvent-free, chemical-free, Swiss water or certified organic. These ensure that their decaffeination methods are natural, safe, and responsible.
IF YOU STILL DON’T UNDERSTAND WHAT THEY’RE DOING, call or email them directly and inquire as to their process – they should be able to provide all the answers!
While there is limited scientific support to support claims that ingestion of trace amounts of the chemicals (ethyl acetate and methylene chloride) found in some decaffeinated coffees is harmful, many choose to steer clear as these compounds have been linked with carcinogenicity. Thankfully, most harmful chemicals have been replaced with safer alternatives and only trace amounts remain in finished products.
Chemical Method
Coffee beans contain caffeine, but many consumers prefer caffeine-free cups of java. As such, there are various decaffeination techniques to remove caffeine before roasting; though no 100% effective method exists yet; most come close. Unfortunately however, using chemicals with potential environmental or personal health risks remains a potential risk.
Most decaffeination methods employ some kind of chemical solvent, like ethyl acetate or methylene chloride (commonly found in paint strippers and cleaning solutions). The chemicals are circulated through green bean beds where they attach themselves to caffeine molecules before dissolving off, eventually leaving behind beans ready for roasting and consumption.
The direct solvent method is the most frequently employed approach and employs a mixture of methylene chloride and ethyl acetate to decaffeinate beans. First, they’re steamed to open their pores and render them more vulnerable to chemicals; once that has taken effect, they’re immersed into a solution of water and methylene chloride, which penetrates them and bonds with caffeine molecules until virtually caffeine-free beans emerge; these steps must then be repeated numerous times until almost no trace remains in their entirety; then rinsed, dried before being roasted like any other coffee bean!
Organic and natural decaf products have become more widely-embraced as consumers become more concerned about the health impacts associated with conventionally grown, chemical-laden produce. Selecting between organic or regular decaf can often come down to matters of taste, health and environmental sustainability.
No matter whether it is organic or regular decaf, we advise reading the label. Although the methods of decaffeination may not be as important as how your preferred brand decaffeinates their beans, taking an organic/natural route ensures your decaf will have delicious flavor without harmful side-effects for either yourself or the environment.