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Pinene

physical science Maturity 11-13 Next article →

Pinene is a special group of natural substances. These substances are called monoterpenes. You can find them in many different plants. They are most famous for being in pine trees. Pinene is the main part of the liquid extracts from conifers. These are trees like pines and firs. You can also find pinene in plants that are not conifers. Examples include big sagebrush and camphorweed.

Pinene biosynthesis en
Pinene biosynthesis en

Nature makes pinene through a specific way it works. It starts with a substance called geranyl pyrophosphate. This then turns into linaloyl pyrophosphate through a process called cyclisation. After that, a proton is lost from the carbocation equivalent. This creates two main forms of pinene. We call these forms alpha-pinene and beta-pinene. They are geometric isomers. This means they have the same parts but different shapes.

(−)-alpha-pinene-3D-balls
(−)-alpha-pinene-3D-balls

Scientists have worked hard to study these molecules. Researchers at the Georgia Institute of Technology have done important work. They worked with the Joint BioEnergy Institute. These experts found a way to make pinene in a lab. They used a tiny living thing called a bacterium. This allowed them to produce pinene synthetically. This is a big step for science.

Verbenone by oxidation of pinene
Verbenone by oxidation of pinene

There are many interesting facts about pinene. Alpha-pinene is the most common terpenoid in nature. It is very good at keeping insects away. You can find alpha-pinene in rosemary, basil, and sage. It is also in the peel of Makrut lime. Even oranges and lemons have a mixture of these forms. Pinene is also found in pine nuts. Some pinene types are even in cannabis plants.

(1S)-(-)-alpha-pinene-2D-skeletal
(1S)-(-)-alpha-pinene-2D-skeletal

We use pinene in many parts of our lives. Alpha-pinene is a main part of turpentine. Turpentine is a liquid used as a fuel or a solvent. People have even looked at using pinene as a biofuel. This is a fuel for engines. Some pinene parts have heating values like jet fuel. Scientists also study its effects on the body. It may help with memory and swelling.

(1R)-(+)-beta-pinene-2D-skeletal
(1R)-(+)-beta-pinene-2D-skeletal
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🖼️ Images & Media (11)
File:(1R)-(+)-alpha-pinene-2D-skeletal.svg
(1R)-(+)-alpha-pinene-2D-skeletal.svg
File:(1S)-(-)-alpha-pinene-2D-skeletal.png
(1S)-(-)-alpha-pinene-2D-skeletal.png
File:(1R)-(+)-beta-pinene-2D-skeletal.png
(1R)-(+)-beta-pinene-2D-skeletal.png
File:(1S)-(-)-beta-pinene-2D-skeletal.png
(1S)-(-)-beta-pinene-2D-skeletal.png
File:(1S)-(-)-alpha-pinene-2D-projected-skeletal.png
(1S)-(-)-alpha-pinene-2D-projected-skeletal.png
File:(1S)-(-)-beta-pinene-2D-projected-skeletal.png
(1S)-(-)-beta-pinene-2D-projected-skeletal.png
File:(−)-alpha-pinene-3D-balls.png
(−)-alpha-pinene-3D-balls.png
File:(1S)-(−)-alpha-pinene-from-xtal-3D-balls.png
(1S)-(−)-alpha-pinene-from-xtal-3D-balls.png
File:(1S)-(−)-beta-pinene-from-xtal-3D-balls.png
(1S)-(−)-beta-pinene-from-xtal-3D-balls.png
File:Pinene_biosynthesis_en.svg
Pinene_biosynthesis_en.svg
File:Verbenone by oxidation of pinene.svg
Verbenone by oxidation of pinene.svg
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