April 28, 2013

Decaf Coffee

My husband is against the idea of me having a decaf coffee instead. He mentioned some chemicals, whatever included in decaffeination which I didn't bother to remember. Then I googled decaffeination and found this facts http://en.wikipedia.org/wiki/Decaffeination.

In the direct method, the coffee beans are first steamed for 30 minutes and then repeatedly rinsed with either methylene chloride (Dichloromethane/DCM) or ethyl acetate for about 10 hours. The solvent is then drained away and the beans steamed for an additional 10 hours to remove any residual solvent. Sometimes coffees that are decaffeinated using ethyl acetate are referred to as naturally processed because ethyl acetate can be derived from various fruits or vegetables; but, because of the impracticality of gathering natural ethyl acetate, the chemical used for decaffeination is synthetic.


methylene chloride
Dichloromethane's volatility and ability to dissolve a wide range of organic compounds makes it a useful solvent for many chemical processes. Concerns about its health effects have led to a search for alternatives in many of these applications.It is widely used as a paint stripper and a degreaser. In the food industry, it has been used to decaffeinate coffee and tea as well as to prepare extracts of hops and other flavorings. Its volatility has led to its use as an aerosol spray propellant and as a blowing agent for polyurethanefoams.
ethyl acetate
Ethyl acetate is primarily used as a solvent and diluent, being favored because of its low cost, low toxicity, and agreeable odor. For example, it is commonly used to clean circuit boards and in some nail varnish removers (acetone and acetonitrile are also used). Coffee beans and tea leaves are decaffeinated with this solvent. It is also used in paints as an activator or hardener.

According to this site, 'almost all brands of decaffeinated coffee still contain some caffeine and drinking five to ten cups of decaffeinated coffee could deliver as much caffeine as would one or two cups of regular coffee, according to research at the University of Florida Maples Center for Forensic Medicine'.

It's not easy to give up regular coffee for me but to ensure that my blood pressure is below the elevated bracket, I will do it. So it's bye coffee for now, but I will have it again but not that much.

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