Ginger: Constituents, Forms & Use

Ginger (Zingiber officinale) is the pungent, aromatic rhizome of a tropical plant – its characteristic constituents are the gingerols and shogaols as well as essential oils. Whether as a fresh root, powder, tea or standardised extract: ginger is one of the world’s best-known spice and culinary plants and has been part of traditional systems of use for centuries. In this guide you will learn what makes the root so special chemically, how fresh and dried ginger differ, what research is investigating and what matters when it comes to quality and form.

The most important points in brief

• Ginger is the rhizome (not a rootstock in the narrower sense) of a herbaceous plant from the ginger family.
• The characteristic marker compounds are the pungent gingerols and shogaols as well as essential oils.
• Available as a fresh root, powder, extract, capsule or tea – the form also influences the marker-compound profile.
• For ginger, there are currently no approved health claims in the EU; we describe it neutrally.
• When it comes to quality, origin, standardised marker-compound content and laboratory testing count.

What makes ginger special inside: gingerols, shogaols & essential oils

Bite into a piece of fresh ginger and the pungency comes immediately – responsible above all are the gingerols, pungent-tasting compounds that dominate in fresh produce. When you dry or heat the ginger, gingerols are partly converted into shogaols, which shape the profile of dried ginger and are often perceived as even more pungent. In addition there are essential oils such as zingiberene, which provide the typical, fresh and spicy aroma.

These marker compounds are the reason why ginger is so interesting botanically and chemically. Standardised extracts are often adjusted to a defined gingerol content in order to enable a consistent composition. How well plant compounds are generally absorbed depends on many factors – background on this in Bioavailability Simply Explained.

Origin and botany of the ginger plant

Ginger originally comes from tropical Asia and is now grown in many warm regions – India, China, Nigeria and Peru are among the major growing countries. Botanically it is a rhizome, an underground, thickened shoot. Above ground the plant forms reed-like leaves, while the valuable part develops below the ground. The rhizome is harvested, cleaned and, depending on its use, processed fresh or dried. Botanically, ginger is closely related to turmeric – comparing the two is worthwhile in Turmeric vs. Ginger.

Understanding the pungency: why ginger burns

The characteristic pungency of ginger is not a coincidence but can be explained chemically. Responsible are the gingerols – compounds whose structure is reminiscent of the capsaicin in chilli, without being identical to it. They irritate the same warmth and pungency receptors on the tongue, which is why we perceive ginger as “pungent” and slightly warming. When heated and dried, this pungency changes: gingerols become shogaols, which taste different and often more intense. It is precisely this transformation that is the reason why a ginger tea made from fresh root tastes different from one made from powder – a vivid example of how closely chemistry and taste are connected.

Why ginger is so universally valued

In various traditional systems – for instance in Ayurvedic and East Asian herbalism – ginger has been used for centuries as a spice and a component of preparations. This mention serves as cultural-historical context and is not a statement about any health effect. Culinarily, ginger remains popular worldwide to this day: as an aromatic base of Asian dishes, as ginger tea, in baked goods, drinks or pickled as a side. This broad culinary rooting explains why the root is among the best-known spice plants across cultural boundaries.

What research is investigating

Ginger is one of the intensively researched spice plants. Scientifically well characterised are above all its constituents: gingerols and shogaols can be clearly described chemically, and their conversion during drying and heating is well studied. Beyond that, research is concerned with the behaviour of these compounds in the body – for instance questions of absorption and metabolism. Much of this is the subject of ongoing investigations; approved health claims for foods have so far not been derived from it in the EU. We therefore stick to what is established: origin, chemistry and forms.

Fresh and dried ginger compared

An often overlooked point: fresh and dried ginger are not the same. The following table shows the differences.

For your choice this means: the form is not only a question of handling but also of composition. Anyone looking for a defined profile usually reaches for extracts with a standardised marker-compound content.

Forms and use

• Fresh root: versatile in the kitchen – grate, slice, infuse.
• Powder: dried, ground ginger – practical for dosing and seasoning.
• Extract/capsules: concentrated forms, often with a standardised marker-compound content.
• Tea: an infusion of fresh or dried pieces.

Which form suits you is above all a question of preference and handling. An overview of dosage forms is given in Capsule, Tablet, Powder or Drops.

In everyday life the fresh root is the most flexible: thinly sliced or grated in tea, soups, curries, dressings or smoothies. A classic is the ginger infusion – pour hot water over a few slices, optionally with lemon. Powder is suitable for seasoning and baking and is easy to dose, but loses its fresh note compared with the fresh root. Capsules and extracts are practical on the go and, with standardised products, provide a defined marker-compound content. Important with all forms: ginger is a food or an ingredient, not a remedy for symptoms.

Quality: what you should look out for

Since ginger as a natural product varies, when buying it is worth looking at several points: the origin and cultivation method (for instance organic quality – see Organic in Food Supplements), a standardised marker-compound content for extracts as well as an independent laboratory test for purity and contaminants – what that means is explained in Lab-Tested: What Does That Mean?. At Scheunengut we rely on lab-tested raw materials and transparent information.

Honestly assessed

Established are the origin, chemistry and the conversion of the marker compounds – that is well-researched expert knowledge. Open, or legally not usable as a claim, are specific health effects: for ginger, no health claims under Regulation (EU) No 432/2012 are currently approved in the EU. This does not mean that the plant is uninteresting – it means that we describe it factually and neutrally and formulate no efficacy promises. If you are considering ginger in connection with persistent symptoms, please clarify its use with a doctor, especially when taking medication, during pregnancy or while breastfeeding.

Matching products & further guides

In our Ginger category you will find ginger products in various forms such as capsules and extracts. Related roots and plants are shown in the Turmeric category; a broad overview is offered by All Products. Further reading: Turmeric and Curcumin, Turmeric vs. Ginger, Bioavailability Simply Explained, Capsule, Tablet, Powder or Drops and Elderberry.

Frequently asked questions (FAQ)

What are the most important constituents of ginger?

The characteristic marker compounds are the pungent-tasting gingerols, which dominate in fresh ginger, as well as the shogaols, which form from gingerols during drying and heating. In addition there are essential oils such as zingiberene, which provide the typical aroma.

Is fresh or dried ginger better?

That depends on the purpose – the two differ in their profile. Fresh ginger contains mainly gingerols and tastes fresh and lemony; during drying these become shogaols, which is why dried ginger often tastes more pungent. For a defined marker-compound profile, one usually reaches for standardised extracts.

Is ginger the same as a root?

Botanically not quite: ginger is a rhizome, that is an underground, thickened shoot – not a rootstock in the narrower sense. It is closely related to turmeric, which is also a rhizome.

How do I recognise a good ginger extract?

By a traceable origin and cultivation method, a standardised content of marker compounds such as gingerols and an independent laboratory test for purity and contaminants. This information is a factual quality feature and not an efficacy claim.