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Phytochemical Analysis, Antioxidant, and Antibacterial Activity of Bidara laut (Strychnos lucida R.Br) Grown in West Bali National Park, Indonesia: Phytochemical Analysis, Antioxidant, and Antibacterial Activity of Bidara laut

Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences · Vol. 15 No. 1 (2025) · pp. 177–184

DOI
10.11594/jtls.15.01.17
ISSN
2527-4376, 2087-5517
Published
2025-06-26
Publisher
Journal of Tropical Life Science
Language
eng
License
creativecommons.org/licenses/by-nc/4.0

Abstract

Strychnos lucida R.Br. is a medicinal plant believed to treat various diseases. The study aimed to identify the phytochemical compounds, total phenolic content (TPC), antioxidant, and antibacterial activity of the root, seed, stem, and leaf of S. lucida. Antioxidant activity was examined using the DPPH method in the methanol extract. The extract of four parts of S. lucida was tested against three bacteria (Bacillus subtilis Inacc-B334, Staphylococcus aureus Inacc-B4, and Escherichia coli Inacc-B5) using the disk diffusion method. The results showed that alkaloids and tannins were detected in all parts of the plant. The highest TPC was shown in root (6%) and the lowest TPC was found in seed extract (4.67%). The antioxidant activity test presented the value of IC50 of the methanol extract of root, seed, stem, and leaf as 129.65 µg/ml, 255.04 µg/ml, 145.28 µg/ml, and 112.96 µg/ml, respectively. Furthermore, the stem showed antibacterial activity by inhibiting the growth of B. subtilis and S. aureus in a concentration of 10% of the sample extract (v/v). Leaf extract has activity against only S. aureus growth in different concentrations (2.5, 5, 10%), while all bacteria were resistant to root and seed extracts. The stem extract showed the highest antioxidant and antibacterial activity compared to other parts.

Keywords

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32 authors · 122 co-authorship links

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Co-authorOrganisationJoint articles
Budi MulyanaAffiliation unknown2
Rini PujiartiAffiliation unknown2
Dewi SusantiAffiliation unknown1
Ragil WidyoriniAffiliation unknown1
Muhammad AdnanAffiliation unknown1
Nastiti WijayantiAffiliation unknown1
Matin NuhamunadaAffiliation unknown1
Tri Rini NuringtyasAffiliation unknown1
Rizki MaharaniAffiliation unknown1
Andrian FernandesAffiliation unknown1
Maman TurjamanAffiliation unknown1
Harlinda KuspradiniAffiliation unknown1
Slamet WidiyantoAffiliation unknown1
Alim El-HakimAffiliation unknown1
Sunarti SunartiAffiliation unknown1
Rarastoeti PratiwiAffiliation unknown1
Ardaning NurilianiAffiliation unknown1
Yekti Asih PurwestriAffiliation unknown1
Fajar SofyantoroAffiliation unknown1
Adi Mazdi SyamAffiliation unknown1
Baik Aisyah AdaniaAffiliation unknown1
Muhammad Fikri AlmunawarAffiliation unknown1
Nurlita Putri Bela NasutionAffiliation unknown1
Rheina Faticha Asyamsa HidayatAffiliation unknown1
Made Bagus Auriva MataramAffiliation unknown1
Chesa Ekani MaharesiAffiliation unknown1
Septika NurhidayahAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) http://jtrolis.ub.ac.id/index.php/jtrolis/oai, first harvested 9 Nov 2026, last seen 9 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en">Phytochemical Analysis, Antioxidant, and Antibacterial Activity of Bidara laut (Strychnos lucida R.Br) Grown in West Bali National Park, Indonesia: Phytochemical Analysis, Antioxidant, and Antibacterial Activity of Bidara laut</dc:title>
	<dc:creator xml:lang="en">Krisnawati</dc:creator>
	<dc:creator xml:lang="en">Anita Apriliani Dwi Rahayu</dc:creator>
	<dc:creator xml:lang="en">Lisna Hidayati</dc:creator>
	<dc:creator xml:lang="en">Rizki Arisandi</dc:creator>
	<dc:creator xml:lang="en">Ganis Lukmandaru</dc:creator>
	<dc:subject xml:lang="en">Antibacterial</dc:subject>
	<dc:subject xml:lang="en">Antioxidant</dc:subject>
	<dc:subject xml:lang="en">Bidara laut</dc:subject>
	<dc:subject xml:lang="en">Phytochemical</dc:subject>
	<dc:subject xml:lang="en"> S. lucida</dc:subject>
	<dc:description xml:lang="en">Strychnos lucida R.Br. is a medicinal plant believed to treat various diseases. The study aimed to identify the phytochemical compounds, total phenolic content (TPC), antioxidant, and antibacterial activity of the root, seed, stem, and leaf of S. lucida. Antioxidant activity was examined using the DPPH method in the methanol extract. The extract of four parts of S. lucida was tested against three bacteria (Bacillus subtilis Inacc-B334, Staphylococcus aureus Inacc-B4, and Escherichia coli Inacc-B5) using the disk diffusion method. The results showed that alkaloids and tannins were detected in all parts of the plant. The highest TPC was shown in root (6%) and the lowest TPC was found in seed extract (4.67%). The antioxidant activity test presented the value of IC50 of the methanol extract of root, seed, stem, and leaf as 129.65 µg/ml, 255.04 µg/ml, 145.28 µg/ml, and 112.96 µg/ml, respectively. Furthermore, the stem showed antibacterial activity by inhibiting the growth of B. subtilis and S. aureus in a concentration of 10% of the sample extract (v/v). Leaf extract has activity against only S. aureus growth in different concentrations (2.5, 5, 10%), while all bacteria were resistant to root and seed extracts. The stem extract showed the highest antioxidant and antibacterial activity compared to other parts.</dc:description>
	<dc:publisher xml:lang="en">Journal of Tropical Life Science</dc:publisher>
	<dc:date>2025-06-26</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://jtrolis.ub.ac.id/index.php/jtrolis/article/view/3388</dc:identifier>
	<dc:identifier>10.11594/jtls.15.01.17</dc:identifier>
	<dc:source xml:lang="en">Journal of Tropical Life Science; Vol. 15 No. 1 (2025); 177 – 184</dc:source>
	<dc:source>2527-4376</dc:source>
	<dc:source>2087-5517</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jtrolis.ub.ac.id/index.php/jtrolis/article/view/3388/790</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2025 Journal of Tropical Life Science</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by-nc/4.0</dc:rights>
</oai_dc:dc>