Does light affect the freshness of roasted coffee beans?

on March 27, 2018
coffee roasters and coffee beans

 Coffee beans and light.

Light changes everything…

The stored coffee beans affect :

  1. Air
  2. Moisture
  3. Heat
  4. Light

Light is a form of energy – called radiant energy. It impacts our emotional health and wellbeing. There is also a connection between light and our physical world. Nearly all living organisms grow with the help of ultraviolet (UV) light (which has shorter wavelengths than visible light).  At the same time, UV light also accelerates decay.

A mix of various fats, proteins and enzymes create the unique, delicate flavours of our our beloved coffee drinks. The  mix of these individual chemicals is constantly moving and changing. When the roasted coffee beans are exposed to light, the UV radiation will accelerate the breakdown of chemical compounds. Our coffee beans will lose their freshness, flavour and become stale.


The process of light-induced decaying that breaks down pigments, fats, vitamins and proteins is called “Photodegradation”. Typically, this term is defined by sunlight and air acting together.

Both, sunlight and artificial light can speed this process of decaying. Regular lamps – since they are spreading some UV light as well – will also damage the coffee’s flavor.

Storage coffee beans, tips here:

The best way to store roasted coffee beans, it is in close ceramic pot.

glass with black coffee, with reflection of light


  • Anonymous

    Hello. magnificent job. I did not anticipate this. This is a fantastic story. Thanks!

    August 28, 2018 at 10:27 pm Reply
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    Enjoyed reading through this, very good stuff, thankyou .

    May 1, 2018 at 12:19 am Reply
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