Recognising Turmeric Quality: Curcumin Content, Piperine & Purity

Two tins of turmeric compared: one costs a few euros, the other a multiple of that – and both glow a rich orange. Is the expensive one a flop? Not necessarily, because with turmeric the colour is deceptive. What really counts is rarely displayed prominently on the front.

You recognise good turmeric by the stated curcuminoid content (pure root powder: usually 2–5%; extract: often standardised to around 95%), by a well-thought-out absorption strategy via piperine or fat, and by tested purity. The colour intensity alone says nothing at all – even a cheap colouring powder glows bright yellow.

Curcuminoids: the substance it is actually about

The characteristic orange-yellow colour of the turmeric root comes from the curcuminoids, whose best-known representative is curcumin. It is precisely this content that is the central distinguishing feature between the product worlds:

• Root powder is the dried, ground whole root and usually contains only a few per cent of curcuminoids – typically 2 to 5%. In return, it brings the full spectrum of the root.
• Turmeric extract is concentrated and frequently standardised to a fixed, high proportion, often around 95% curcuminoids. This means a small capsule contains as much curcumin as several teaspoons of powder.

Both have their justification. Anyone using turmeric as a spice and in the kitchen is well served with powder; anyone specifically seeking a high, defined amount of curcumin reaches for the extract. What is decisive is only that the content is clearly stated on the label.

Why piperine and fat are so often involved

Here lies the most important practical point: curcumin is fat-soluble and is taken up by the body only to a limited extent when pure – part of it passes through the gut unused. That is why resourceful manufacturers have three levers:

1. Piperine: the pungent-tasting main constituent of black pepper is added because it can improve the absorption of curcumin – often only a tiny amount is stated.
2. Fat with a meal: because curcumin is fat-soluble, taking it together with a fat-containing dish helps. In the classic "golden milk", the combination of fat and pepper gets this intuitively right.
3. Special formulations: micellar or liposomal extracts are designed to make the fat-soluble curcumin more transportable.

How to combine all of this correctly in everyday life is shown in Taking Turmeric Correctly: Pepper & Fat. The basics of why absorption is such a topic at all are explained in Bioavailability Simply Explained.

Why so many people use turmeric

Turmeric is not a trend of yesterday – the root has been used in India for thousands of years, both as a culinary spice and traditionally in Ayurveda, and to this day is a firm component of South Asian cuisine. In recent years it has also found a firm place in the West: as a golden latte drink, as a capsule on the supplement shelf and as an ingredient in many recipes. The appeal lies in the combination of centuries-old culinary tradition and the concentrated, standardised extract that modern processes make possible. A comparison with the related root is made in Turmeric vs. Ginger.

What research is investigating

Curcumin is among the most intensively studied plant substances worldwide. Research is concerned above all with bioavailability – that is, the question of how to make the fat-soluble substance more absorbable – as well as with the numerous molecular processes in which curcumin appears to be involved in the laboratory. It is an active, exciting field in which much is discussed.

Clearly and honestly stated: for turmeric or curcumin, no health-related claims are currently authorised in the EU. We therefore describe turmeric as what it is – a plant rich in tradition with a characteristic, measurable content of curcuminoids. Anyone who sells you a concrete claim of effect crosses a line that Google and authorities also penalise.

Purity, origin and the standardisation trick

Root raw materials can take up residues depending on the growing region and soil – which is why testing for heavy metals and other impurities is a genuine quality feature. Organic cultivation and transparent origin details speak for care; what the organic seal means is covered in Organic in Supplements.

A common stumbling block with standardisation: the figure "95% curcuminoids" refers to the extract, not necessarily to the overall product. If a capsule contains, say, 500 mg of extract, at 95% that is around 475 mg of curcuminoids – with a product containing 500 mg of "turmeric incl. extract portion" it can be considerably less. Therefore pay attention to the absolute mg figure of curcuminoids per daily portion. What a laboratory test secures here is explained in Laboratory-Tested – What Does That Mean?

Capsule, powder or liquid extract?

Turmeric is available in three basic forms that suit different everyday routines:

• Capsules: convenient, taste-neutral (no earthy-bitter turmeric taste), precisely dosed – ideal for on the go and for standardised extracts.
• Powder: flexible for the kitchen, for golden milk, curries, smoothies; here the whole root character counts.
• Liquid/special extracts (micellar, liposomal): designed for improved absorption, often higher-priced.

Which form specifically suits you depends on preference and the desired dosage – the direct comparison is in Turmeric: Capsule or Powder?

How much turmeric is usual in everyday life?

With powder, you move within the culinary range – one to two teaspoons spread over the day in curries, rice or golden milk are common. With standardised extracts, you work with considerably smaller amounts, because the curcuminoid proportion is so high; here the manufacturer's specification is decisive. It is important to consider the specific amount of curcuminoids and not the amount of raw material – two products with "500 mg" can contain very different amounts of curcumin. The range of amounts is put into context more precisely by Turmeric – How Much per Day? Anyone who would like to integrate turmeric permanently into their cooking combines it quite naturally with fat and a pinch of pepper.

For whom turmeric is less suitable

A few situations deserve caution rather than recklessness. Turmeric or concentrated curcumin extracts are not the best choice for everyone across the board: during pregnancy and breastfeeding, with gallstones or diseases of the bile ducts, and when taking medication – such as anticoagulants – the use of higher amounts should be clarified medically in advance. Anyone who already takes many supplements should also keep an overview; Supplements and Medication helps with this. This is not scaremongering, but simply the responsible handling of a highly concentrated plant substance.

The quality checklist at a glance

Honestly put into context

What is established is what is measurable: the curcuminoid content, the degree of standardisation, the purity and that curcumin is fat-soluble and poorly absorbable when pure – hence the piperine and fat trick. Open, or the subject of active research, is everything that goes beyond concrete health effects; here there are (as yet) no authorised claims. So assess a turmeric product by content, purity and absorption strategy – not by the brilliance of the colour. For persistent complaints, turn to medical professionals.

Suitable products from Scheunengut

In our Turmeric category you will find both standardised extracts and root powder with a stated content; anyone who likes the pungent relative can also take a look at Ginger. To dive deeper: the intake practice in Pepper & Fat, the range of amounts in Turmeric – How Much per Day?, the form comparison in Capsule or Powder?, the plant comparison in Turmeric vs. Ginger and the basics of absorption in Bioavailability Simply Explained.

Frequently Asked Questions (FAQ)

Which is better: turmeric powder or turmeric extract?

That depends on the goal. Pure root powder usually contains only 2–5% curcuminoids and is suitable for cooking (golden milk, curries). An extract is standardised to a high proportion – often around 95% curcuminoids – and delivers a lot of curcumin per capsule in concentrated form. Anyone who wants the whole root takes powder; anyone seeking a defined high content, the extract.

Why is piperine so often included with turmeric?

Curcumin is fat-soluble and is taken up by the body only to a limited extent when pure. Piperine, the pungent constituent of black pepper, is added because it can markedly improve the absorption of curcumin. Alternatively, fat with a meal or special micellar/liposomal formulations help.

How do I recognise a truly standardised extract?

Look for a clear figure such as "extract, standardised to 95% curcuminoids" – and make sure that this percentage refers to the extract, not to the overall product. Reputable providers additionally state the absolute mg amount of curcuminoids per daily portion and document the batch via laboratory testing.

Is organic turmeric worthwhile?

Organic cultivation and transparent origin are a good sign of care, precisely because root raw materials can take up residues depending on the soil. What remains decisive, however, is the testing for heavy metals and the stated curcuminoid content – organic alone says nothing about the concentration.

How we at Scheunengut ensure tested purity from raw material to tin is explained on our page about the Clean Earth Badge.