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Basil

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Basil, scientifically known as *Ocimum basilicum*, is a culinary herb belonging to the Lamiaceae family, which also includes mints.

Basilic-spice
Basilic-spice

Often called "great basil," this tender plant is used in diverse cuisines across the entire globe. While it is native to tropical regions stretching from Central Africa to Southeast Asia, human cultivation has made it a globalized crop. In Western cooking, the term "basil" usually refers to Genovese or sweet basil. Because of its immense variety and frequent cross-pollination, its exact taxonomy is quite complex. There are at least 60 recognized varieties of this plant.

The physical structure of basil is quite distinct. It features square stems, which is a common trait among the Lamiaceae family. The leaves are glossy and ovulate, meaning they are shaped like an egg. These leaves can be green or purple and are arranged oppositely along the stem. They often have smooth or slightly toothed edges and may cup slightly.

The Flowers of Italian Basil
The Flowers of Italian Basil

At the top of the plant, a central inflorescence, or spike, produces small white flowers. Unlike many other plants in its family, the four stamens and the pistil lie over the lower lip of the flower. After insects pollinate the flowers, the plant develops small, round seeds called achenes inside a protective calyx.

Basil's famous scent comes from volatile aromatic compounds found in its essential oils. These compounds vary depending on the specific cultivar being grown. For example, European basil contains high concentrations of linalool and methyl chavicol, or estragole, in a roughly 3:1 ratio. Sweet basil carries a clove-like scent because it contains eugenol. This specific chemical is synthesized from coniferyl acetate and NADPH.

Xylocopa pubescens female with mite 1
Xylocopa pubescens female with mite 1

Other important components include 1,8-cineole and myrcene, which contribute to the complex aroma profiles that chefs value.

There are many distinct types of basil, ranging from pure species to complex hybrids. Common cultivars include Genovese basil, which is a staple in Mediterranean cooking, and Thai basil (*O. basilicum* var. *thyrsiflora*).

Prem Tinsulanonda International School garden
Prem Tinsulanonda International School garden

Some varieties offer unique flavors, such as cinnamon basil or the lemony-scented lemon basil. Hybrids occur when *O. basilicum* cross-pollinates with other species in the *Ocimum* genus. This process creates new plants like African blue basil (*O. basilicum* × *O. kilimandscharicum*) and lemon basil (*O. × americanum*). Even the color varies, with cultivars like "Purple Delight" or "Dark Opal" offering deep purple foliage.

The history of the name "basil" is as rich as its flavor. The word originates from Latin and Greek terms meaning "royal" or "kingly plant." This name likely stems from the belief that basil was used to produce perfumes for royalty. In French, it is even referred to as "the royal herb." Historically, the name was sometimes confused with the basilisk, a mythical creature. Some ancient traditions suggested that the plant could serve as an antidote to basilisk venom.

Growing basil requires specific environmental conditions to thrive. The plant is highly sensitive to cold and prefers hot, dry conditions with high light intensity.

Increasing light, specifically the photosynthetic photon flux density, can improve the plant's height and weight. It grows best in well-drained organic soil because oxygen availability in the root zone is vital. If the soil does not drain well, the roots may suffer from hypoxia, or a lack of oxygen. This can reduce the yield of essential oils. Growers often use pruning to manage the plant. By pinching off flower stems, growers prevent the plant from becoming woody and keep it focused on leaf production.

Beyond the kitchen, basil has significant scientific and medicinal applications. In folk medicine, it is used in practices like Ayurveda and traditional Chinese medicine. Its essential oils have shown potential as insect repellents and insecticides. Studies have shown the oil can inhibit the electrical activity of certain insects, such as mosquitoes. It has also been found to be effective against pests like the cowpea pest, *Callobruchus maculatus*.

Ocimum basilicum desiccated 5145~2016 01 03
Ocimum basilicum desiccated 5145~2016 01 03

Additionally, the oil can act as a nematicide against various worms and can inhibit certain types of bacteria and fungi.

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🖼️ Images & Media (7)
Timelapse-Basil-growing.oga
File:Ocimum basilicum desiccated 5145~2016 01 03.JPG
Ocimum basilicum desiccated 5145~2016 01 03.JPG
File:Prem Tinsulanonda International School garden.jpg
Prem Tinsulanonda International School garden.jpg
File:Xylocopa pubescens female with mite 1.JPG
Xylocopa pubescens female with mite 1.JPG
File:The Flowers of Italian Basil.jpg
The Flowers of Italian Basil.jpg
File:Basilic-spice.jpg
Basilic-spice.jpg
File:WHH Isabella Pot of Basil DelArt.jpg
WHH Isabella Pot of Basil DelArt.jpg
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