engineering

Oil of clove

Oil of clove is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Oil of clove rather than just read about it. In short: Oil of clove, also known as clove oil or eugenol, is an essential oil extracted from the clove plant through steam distillation, Syzygium aromaticum. Clove oil is commonly used in aromatherapy and for flavoring food, tea, and toothpaste.

Key takeaways

Oil of clove belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Oil of clove to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Oil of clove from memory before moving on to harder problems.

Reference excerpt

Oil of clove, also known as clove oil or eugenol, is an essential oil extracted from the clove plant through steam distillation, Syzygium aromaticum. Clove oil is commonly used in aromatherapy and for flavoring food, tea, and toothpaste. In alternative medicine, it may be used as a topical medication to relieve toothache. There is insufficient medical evidence to support its use as an analgesic for treating pain. Madagascar and Indonesia are the main producers of clove oil.

Types and phytochemicals There are three types of clove oil:

Bud oil is derived from the flower-buds of S. aromaticum. It consists of 60–90% eugenol, eugenol acetate, caryophyllene and other minor constituents. Leaf oil is derived from the leaves of S. aromaticum. It consists of 70–82% eugenol, and some amounts of beta Caryophyllene and alpha Humulene. Stem oil is derived from the twigs of S. aromaticum. It consists of 85–92% eugenol, with other minor constituents. Stem oil is closer in olfactive and flavor profile to bud oil. Distilled clove oil from buds contains mixed phytochemicals, including as main constituents phenylpropanoids (primarily eugenol), carvacrol, thymol, and cinnamaldehyde, with smaller quantities of polyphenols, carbohydrates, lipids, oleanolic acid, and rhamnetin.

Human health

Toxicity Clove oil is toxic in anything other than small therapeutic doses, and several cases of acute liver and kidney damage have been reported, principally in children. In foods, the level of clove oil used as a flavor ingredient does not exceed 0.06%, and is considered safe.

Toothache Particularly in South Korea and India, eugenol, an aromatic compound extracted from clove oil, is used in alternative medicine to relieve toothache. Applied to a cavity in a decayed tooth or tooth socket remaining after extraction, eugenol or clove oil may relieve toothache temporarily. There is insufficient scientific evidence that eugenol is effective for treating dental pain. In the late 19th and early 20th centuries, clove oil was a popular ingredient in European toothache medications. Examples of such preparations included Stoffels Zahnschmerzstille, Odontine and Jehnol.

Other uses Clove oil is commonly used to anesthetize or euthanize laboratory or pet fish. Clove oil is a component of choji oil (Japanese: 丁子油), which was traditionally used for the maintenance of Japanese swords.

Regulation In Germany, Commission E permits the sale and administration of clove oil for use in alternative medicine.

Notes

References

Illustrations

Worked examples

Example 1 — a first encounter with Oil of clove

Start with the simplest possible case. Write down what Oil of clove claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Oil of clove before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Oil of clove ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Oil of clove

In research: Oil of clove appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Oil of clove in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Oil of clove is common in secondary-school and first-year university syllabi. It links to neighbouring topics Dental materials, Essential oils, so understanding it makes those chapters shorter.
In everyday life: Look for Oil of clove outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Oil of clove in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Oil of clove means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Oil of clove out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Oil of clove in simple terms?

Why does Oil of clove matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Oil of clove?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Oil of clove.