Tamarind nutrition, compounds and health effects reviewed
What it found
Tamarind contains carbohydrates, fibre, protein, minerals, vitamins and phenolic compounds, and extracts from its pulp, seeds, leaves and shell have shown antioxidant, blood sugar, blood fat, antibacterial and anti-inflammatory effects.
Most of this evidence comes from lab tests and animals, with few studies in people.
What they found
Animal and lab studies
Antioxidant effects
Tamarind extracts showed antioxidant activity in lab tests, with pulp polysaccharides scavenging DPPH radicals more strongly than seed polysaccharides. In zebrafish, tamarind shell extract increased superoxide dismutase activity by 18% to 37% and reduced malondialdehyde levels by 22% to 41%.
Blood sugar and diabetes
In diabetic rats, a tamarind seed trypsin inhibitor reduced fasting blood glucose and improved insulin sensitivity. In lab tests, compounds from leaves and pulp inhibited enzymes involved in carbohydrate digestion.
Blood fats
In obese rats and mice, tamarind seed or pulp extracts lowered total cholesterol and triglycerides and raised HDL cholesterol. A seed extract also reduced lipid accumulation in lab tests.
Gut bacteria
Tamarind seed polysaccharides promoted the growth of beneficial gut bacteria like Bifidobacterium and increased short-chain fatty acid production in lab tests. They also reduced harmful bacteria such as Escherichia and Shigella.
Studies in people and animals
Pain and inflammation
In mice, tamarind leaf extracts reduced pain responses by 33.6% to 47.2%. A study in people with knee osteoarthritis found that seed extracts reduced pain and lowered inflammatory markers.
Other findings
Nutrients in different parts
The fruit pulp has the most carbohydrates (610.0 to 640.0 mg/g dry weight), more than seeds, leaves or shell. Seeds are richest in protein (192.5 to 217.5 mg/g dry weight), and the shell provides 440.0 mg/g dry weight of dietary fibre.
What the authors conclude
“Overall, this review provides a comprehensive scientific basis for the value-added development and sustainable utilization of tamarind resources.”
Also in their conclusions
- They say tamarind should be seen as a multi-functional resource for nutrition, functional ingredients, pharmaceuticals and sustainable materials.
- They call for more research on the whole plant, better extraction methods, standardised quality control and rigorous clinical trials in people.
- They note that safety studies are limited and that non-pulp parts need more toxicological evaluation.
How it was done
The authors say the fruit pulp is widely used but other parts like seeds, shells and leaves are often thrown away despite evidence of nutritional value. They wanted an up-to-date review covering the whole tamarind plant to guide future research and use.
They searched scientific databases for tamarind studies up to 22 May 2025 and analysed 1116 records from Web of Science and 278 from CNKI. They summarised findings on nutrients, plant compounds, biological activities, safety and applications across different parts of the plant.
What it can’t tell you
- Most of the evidence comes from lab tests and animals, so it cannot show what happens in people.
- The few human studies are small, and the review does not give enough detail to draw firm conclusions about long-term effects.
- The studies used different extraction methods and doses, making it hard to compare results directly.
Who paid
- Funding
- Funded by the Science and Technology Commissioner Project of Liu Xi, Dali University; the key technology projects in Yunnan province of China; the National Key R&D Program of China (from the PubMed record).
- Conflicts
- The authors have declared no conflict of interest.
- Authors work at
- Dali University, China; International Joint Laboratory for Research and Development of Yunnan's Characteristic Medicinal and Edible Resources, China
The paper
- Title
- Exploring Nutritional Properties, Bioactive Compounds, and Potential Applications of Tamarindus indica L.: An Underutilized Food Plant
- Type
- ReviewThe authors read earlier studies and describe what they found. It isn’t a new study.
- Evidence
- Studies in people · animals · lab
- Summarised from
- Full text
- Licence
- CC BY. Words in quotation marks are the authors’; the rest is our summary.
- Cite
- Zhang Y, Long R, Li C, et al (2026). Exploring Nutritional Properties, Bioactive Compounds, and Potential Applications of Tamarindus indica L.: An Underutilized Food Plant. Foods (Basel, Switzerland). doi:10.3390/foods15111953Free full textPubMed 42279742DOI
Summary written 30 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error