カフェインレス・ブラジル【DECAF・BRAZIL】 / 200g
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カフェインレス・ブラジル【DECAF・BRAZIL】 / 200g

¥1,300 税込

送料についてはこちら

  • 豆のまま(Whole Bean)

  • 粉(ペーパー、Medium)

  • 粉(フレンチプレス粗びき, Coarse)

  • 粉(アイスコーヒー細挽き、Fine)

【カフェインレス・ブラジル】 DECAF・BRAZIL (CO2 decaffeination ) 液体CO2でカフェインを除去。芳ばしい適度な苦味とバランスのとれたあじわいです。 CO2メソッドについて CO2メソッドとは、二酸化炭素を超臨界流体の状態にしてカフェインを抽出する方法です。物質に一定以上の温度と圧力を加えると、気体と液体の性質を兼ね備えた超臨界流体状態になります。 超臨界流体は、気体の持つ拡散性と、液体の持つ溶解性をあわせ持つため、コーヒー豆内部への浸透性が高く、成分の抽出効率に優れているのが特徴です。 【What is CO2 METHOD?】 The CO2 decaffeination method Here is a simple break down of how the CO2 decaffeination of coffee beans works: 1. Coffee beans are soaked in water. (This causes the beans to swell to twice their size and allows the caffeine to ultimately dissolve into the water trapped inside the bean.) 2. The soaked beans go into huge stainless steel extraction vessels, which are then tightly sealed. 3. Liquid CO2 is then pumped into the coffee beans at an incredible rate of pressure — 1,000 pounds per square inch, at a temperature of roughly 200 degrees F. At this rate of pressure, we call this supercritical CO2. 4. The supercritical CO2 acts as a solvent, absorbing the caffeine and some of the water. Each bean needs about 5-7 hours to diffuse all of its caffeine. 5. Once the beans are caffeine-free, they’re removed, dried, and roasted for packaging. But there’s one more step in this no-waste process. The decaf beans are now off for production, but what about all that extracted caffeine? It is actually recovered through something called an absorption chamber. By simply showering the dissolved caffeine CO2 with water, the droplets of H2O pull the caffeine out of the CO2 and collect in a separate chamber. This liquid caffeine is then sold to drink manufacturers and other companies that add caffeine to their products. The leftover CO2 is not wasted either. Now purified by the end of this whole process, it can be recaptured, recirculated, and reused.