WordGarden.iohydrogenation
B1Pronunciation
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US
- /ˌhaɪˌdrɑdʒəˈneɪʃən/
Meanings
Noun
a chemical process that adds hydrogen to a substance
industrial treatment of oils or fats with hydrogen to make them more saturated
Beyond the definition
Imagine changing a substance by adding hydrogen to it - that's the basic idea here. It's a chemical reaction where hydrogen is added to another substance. You might hear about it most often when talking about oils, like turning liquid vegetable oil into a more solid fat used in margarine or shortening. This process changes the structure of the molecules, often making them more stable and raising their melting point.
But hydrogenation isn't just for food. It's also an important step in many industrial processes, including petroleum refining and making some chemicals. Think of it as a way of changing a substance by adding tiny hydrogen atoms so it behaves differently. In food science, it is one way unsaturated fats can be changed into more saturated fats.
Hydrogenation is a chemical reaction between molecular hydrogen () and another compound, typically an unsaturated organic molecule. Essentially, it's the addition of hydrogen atoms to reduce bonds within the molecule. This process is widely used in both industrial chemistry and biochemistry.
You're most likely to encounter hydrogenation when discussing fats and oils. Unsaturated fats contain double bonds between carbon atoms. Hydrogenation breaks those double bonds and adds hydrogen atoms in their place, "saturating" the fat. This transforms liquid vegetable oils into semi-solid or solid fats like margarine, shortening, and even some types of peanut butter. While it extends shelf life and improves texture, excessive hydrogenation can create trans fats, which are considered unhealthy.
However, hydrogenation isn't limited to food! It's a vital process in the petrochemical industry for converting unsaturated hydrocarbons into saturated ones, improving fuel stability. It also plays a role in pharmaceutical manufacturing, creating certain compounds used in medications. In organic chemistry labs, hydrogenation is a common reaction used to modify molecules and create new substances.
So, whether it's making your toast spreadable, refining petroleum products, or synthesizing life-saving drugs – hydrogenation is the process of adding hydrogen to change a substance's properties, often for practical benefits… though sometimes with unintended consequences!
Examples
- 1
Food production
The factory uses hydrogenation to make margarine from vegetable oil.
- 2
Trans fats
Partial hydrogenation can create trans fats, so many food companies have stopped using it.
- 3
Chemistry class
In chemistry class, we learned that hydrogenation often needs a metal catalyst.
See also
Similar
- hydrogen addition
Shades of meaning
- reduction
- saturation
- oil hardening
Contrast
- dehydrogenation
- oxidation
Used with (collocations)
- catalytic hydrogenation
- partial hydrogenation
- hydrogenation of vegetable oils
Word family
Explore
- unsaturated compound
- heterogeneous catalysis
Forms and spellings
1 form open this card.
Main spelling
- hydrogenationnoun