The Truth About Decaf Coffee

If you’re looking to limit your caffeine intake, decaf coffee can be a great replacement. It has a nearly similar aroma and health benefits to regular coffee with merely an unnoticeable trace of caffeine.

本文将解释制作脱储咖啡所需的内容。它还将调查“Decaf”真的意味着它根本不含咖啡因，看看其一些好的和糟糕的侧面。

Related Article –10个最佳的咖啡豆。

How Is Coffee Decaffeinated?

So how decaf coffee is made?

很久很久以前(1905年),一个名叫路德维希RosE.lius decided that he wanted to decaffeinate some coffee. He theorised that if he moistened the beans to make the caffeine accessible, and then soaked them in奔驰E.to draw the caffeine out, he’d have his wish. Those were the first decaffeinated beans. You can only imagine how they tasted. Benzene is a chemical that the National Cancer Institute today deems ascarcinogenic(1).

直到最近,化学提取是使用的主要方法。化学品不可避免地留下了影响咖啡味的次数，giving decaffeinated its bad rep. Coffee manufacturers no longer use benzene to remove the caffeine and have turned to less harmful methods. However, in some cases, chemicals are still part of the process.

所有脱氧藻藻胺方法有一些主要的要点：

• Water always plays a part由于咖啡因的水溶性。
• 除了咖啡因,有1,000种化学品that are essential for the taste of coffee. A perfect method needs to strap only caffeine and leave other components intact.
• The process requires chemicals like ethyl acetate and methylene chloride. Since water itself would wash out a lot more than just caffeine, the purpose of these solvents is to尽量减少损坏。
• Every decaffeination process starts with unroasted, green coffee beans.

今天，有四种常见的脱咖啡因方法。在这四个中，只有两种使用化学溶剂。当关于产品上的脱节过程没有任何注意事项时，通常是溶剂基。

The Indirect-Solvent Method (or the Methylene-Chloride Method)

This process uses methylene chloride as the primary chemical compound to separate the caffeine from the coffee beans. First, the beans need to stay in near-boiling water for a few hours to remove the caffeine and other compounds. After that, the beans are moved to another tank where they are usually left to soak in methylene chloride.

将剩余的咖啡因分子键合与该溶剂和热量用于蒸发它们。之后，豆子回到水中，在那里他们吸收了大多数香气和其他元素。

直接溶剂方法（或乙酸乙酯法）

在这种方法中，制造商蒸汽绿色咖啡豆半小时。由于蒸汽，豆子会使毛孔打开，并对溶剂反应。

然后制造商用乙酸乙酯冲洗豆类几个小时，从而提取咖啡因。之后，豆类蒸了一些以去除任何剩余的化学物质。

瑞士水方法

瑞士方法或瑞士水资源（SWP）于1988年进入市场，有机作物改善协会有有机认证。它不包括任何化学品，而是依赖于渗透和溶解度来帮助进行该过程。

It starts with dipping coffee beans in near-boiling water which extracts the caffeine and flavor. Then the water passes through a separate activated charcoal filter. This filter captures only caffeine molecules while the flavor stays with the water. The manufacturers then reuse this new, flavor- and aroma-enhanced water to extract the caffeine from a new group of beans.

The Carbon-Dioxide Method

二氧化碳工艺或CO2是商业制造商用于脱咖啡因较大的咖啡的方法。由于其成本高，使用它可以使用它来食用较少量的咖啡是不可能的。该过程是成功的，因为CO2只结合咖啡因，没有别的。

In this process, CO2 is introduced into a stainless steel container under 1,000 pounds of pressure to remove the caffeine and leave the aroma components intact. The CO2 with caffeine is then moved to a different container where the caffeine is released.

由于二氧化碳基本上是“天然”物质，并且是香气组分保留在豆内，CO2正成为加工未来的首选方法。

Decaf有咖啡因吗？

Despite the term “decaf”, decaffeinated coffee is not entirely caffeine-free (2). So, if you have high blood pressure or other conditions that prohibit you from consuming caffeine, you should still be careful.

The United States Department of Agriculture (USDA) states that decaf coffeecan still contain 3% caffeine.

So, let’s say you have a “tall” Starbucks coffee cup, which is around 350ml (12oz). A caffeinated cup of this size would have 180mg of caffeine, while a nominally decaf cup could still have around 5-6mg of caffeine. According to recent research, almost all types of decaffeinated coffee contain caffeine in some quantity (3).

This means that there are around 7mg of caffeine in any 8oz decaf coffee cup. Keep this in mind if you have any medical condition that may be impacted by caffeine intake. This especially applies to anxiety, heart-related diseases, insomnia, and other similar ailments.

Roland Griffiths, Ph. D, who is a professor at the Department of Neurosciences at the John Hopkins University of Medicine explains this further (4):

According to European law standards, decaf coffee must contain no more than 0.1% of caffeine in roasted coffee beans and up to 0.3% in instant coffee.

Paul Toscano, chief marketing officer of Joyride Coffee, shared that their company favors the Swiss Water Process as it can remove 99% of the caffeine from the beans (5).

Decaf Coffee的优缺点

咖啡咖啡咖啡的最大上行活量在其最大的缺点时同时 - 它不含咖啡因。所以，如果你喝咖啡的主要原因是让你的日常咖啡因修复，你就不会尽可能多地享受溃疡。与此同时，如果你喜欢咖啡的味道和香气，但想避免咖啡因，无论是什么原因，Decaf都是去的方式。

One of the main health controversies regarding decaf coffee is the decaffeination process itself. Experts agree that the Swiss Water Process and the liquid CO2 process are completely healthy, but chemical solvents such as methylene-chloride aren’t as safe.

Charlotte Valleyys，高级政策分析师和消费者报告的食品标签专家解释（6) how to avoid solvent-based decaf coffee.

最后的想法

脱咖啡因咖啡是一种已le alternative if you are caffeine-sensitive but still enjoy the taste of coffee. It is also a great replacement during periods where you need to limit your caffeine intake, such as when experiencing insomnia or during pregnancy.

Caffeine is not completely absent from decaf coffee, but if you drink one or two cups a day, the amount you’ll consume is negligible. Also, if you’re worried about chemically-processed coffee, always look for an ‘organic’ label on the product.

另一方面，如果您喜欢喝咖啡，因为它会增加您的能量和精神警觉，Decaf不会产生相同的效果。在这种情况下，您需要选择常规咖啡。