# In vitro bioactivity and phytochemical characterization of a polyherbal extract with antioxidant and anticancer properties

**Authors:** Aiman Abdullah Ammari, Hossam Mohammed Aljawdah, Ramzi Ahmed Amran, Ahmad Rashed Alhimaidi

PMC · DOI: 10.7717/peerj.20824 · PeerJ · 2026-02-17

## TL;DR

This study investigates a herbal extract's antioxidant and anticancer properties, showing promising results in laboratory tests.

## Contribution

The study introduces a novel polyherbal extract with high antioxidant and anticancer potential, supported by detailed phytochemical and bioactivity analysis.

## Key findings

- The extract showed strong antioxidant activity with IC50 values of 359.93 µg/mL (DPPH) and 292.93 µg/mL (ABTS).
- It exhibited cytotoxic effects against Caco-2 colorectal cancer cells with an IC50 of 103.40 µg/mL.
- Phytochemical analysis revealed high levels of phenolics and tannins, suggesting significant bioactive potential.

## Abstract

Herbal extracts are increasingly recognized for their therapeutic potential due to their rich phytochemical composition and associated bioactivities. This study evaluates the antioxidant and anticancer properties of a compound extract derived from Sidr (Ziziphus spina-christi), Fenugreek (Trigonella foenum-graecum), and Black Seed (Nigella sativa), Quantitative phytochemical analysis revealed high total phenolic (89.35 ± 0.36 mg GAE/g) and tannin content (88.60 ± 0.51 mg GAE/g), along with moderate flavonoid (28.67 ± 0.09 mg QE/g) and flavonol (10.52 ± 0.51 mg QE/g) levels, indicative of robust antioxidant potential. The extract demonstrated notable free-radical scavenging activity, with IC50 values of 359.93 ± 9.91 µg/mL and 292.93 ± 4.24 µg/mL in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assays, respectively. Cytotoxicity evaluation against Caco-2 colorectal cancer cells showed an IC50 value of 103.40 ± 4.51 µg/mL, supporting its anticancer potential. UV–Vis spectral analysis identified a prominent peak at 323.14 nm, suggesting the presence of phenolic and aromatic compounds, while zeta potential analysis (−22.1 ± 6.92 mV) indicated moderate dispersion stability. These results provide preliminary evidence supporting the extract’s potential as a multifunctional bioactive formulation and offer a foundation for future mechanistic and in vivo investigations.

## Linked entities

- **Chemicals:** ABTS (PubChem CID 35688)
- **Diseases:** colorectal cancer (MONDO:0005575)

## Full-text entities

- **Diseases:** tumorigenesis (MESH:D063646), metabolic disease (MESH:D008659), inflammation (MESH:D007249), Ziziphus spina-christi (MESH:D016135), colorectal cancer (MESH:D015179), Cancer (MESH:D009369), gastrointestinal illnesses (MESH:D005767), dermatological (MESH:D000168), Cytotoxicity (MESH:D064420)
- **Chemicals:** CO2 (MESH:D002245), polyphenol (MESH:D059808), water (MESH:D014867), zinc oxide (MESH:D015034), sodium carbonate (MESH:C005686), essential oils (MESH:D009822), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (MESH:C002502), lipid (MESH:D008055), hydrogen (MESH:D006859), isopropanol (MESH:D019840), alkaloid (MESH:D000470), acetic acid (MESH:D019342), diosgenin (MESH:D004144), saponins (MESH:D012503), flavonoid (MESH:D005419), flavonol (MESH:C041477), nickel oxide (MESH:C028007), helium (MESH:D006371), Trolox (MESH:C010643), 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MESH:C022616), Methanol (MESH:D000432), sodium bicarbonate (MESH:D017693), ethyl acetate (MESH:C007650), Folin-Ciocalteu (-), metal (MESH:D008670), Formazan (MESH:D005562), gallic acid (MESH:D005707), Thymoquinone (MESH:C003466), penicillin (MESH:D010406), hexane (MESH:D006586), MTT (MESH:C070243), dichloromethane (MESH:D008752), quercetin (MESH:D011794), streptomycin (MESH:D013307), flavonols (MESH:D044948), potassium persulfate (MESH:C009007), tannic acid (MESH:D013634), 2,2-diphenyl-1-picrylhydrazyl (MESH:C004931)
- **Species:** Nigella sativa (black-caraway, species) [taxon 555479], Ziziphus spina-christi (Christ's thorn jujube, species) [taxon 264981], Ziziphus (genus) [taxon 72171], Rattus norvegicus (brown rat, species) [taxon 10116], Homo sapiens (human, species) [taxon 9606], Trigonella foenum-graecum (fenugreek, species) [taxon 78534]
- **Cell lines:** Caco-2 — Homo sapiens (Human), Colon adenocarcinoma, Cancer cell line (CVCL_0025), Z. spina-christi — Rattus norvegicus (Rat), Spontaneously immortalized cell line (CVCL_JY50)

## Full text

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## Figures

4 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12922583/full.md

## References

36 references — full list in the complete paper: https://tomesphere.com/paper/PMC12922583/full.md

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Source: https://tomesphere.com/paper/PMC12922583