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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Natur Indonesia Prosiding Seminas Competitive Advantage Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Jurnal Mahasiswa Jurusan Teknik Pengairan JURNAL PETERNAKAN Jurnal Teknik Pengairan: Journal of Water Resources Engineering Jurnal Riset Kimia Paediatrica Indonesiana Animal Production : Indonesian Journal of Animal Production Jurnal Pendidikan : Riset dan Konseptual Phinisi Integration Review Jurnal Biologi Tropis Penelitian Pendidikan Geografi Journal of Applied Agricultural Science and Technology JURNAL ILMIAH PETERNAKAN TERPADU JURNAL PHOTON Jurnal Hilirisasi IPTEKS (JHI) Pangea : Wahana Informasi Pengembangan Profesi dan Ilmu Geografi Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks INTERNATIONAL JOURNAL OF EDUCATION, INFORMATION TECHNOLOGY, AND OTHERS Jurnal Kedokteran Hewan Academica : Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Sosial Andalasian Livestock Al-Qiyadah
Endang Purwati RN
Universitas Andalas
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Isolation and Probiotic Characterization of Lactobacillus plantarum from Etawa Goat Milk in Padang, Indonesia Annisa Farma; Tjong, Djong Hon; Purwati, Endang; Agustien , Anthoni; Khaira , Annisa
Journal of Tropical Life Science Vol. 16 No. 2 (2026)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.16.02.04

Abstract

Peranakan Etawa (PE) goat milk is a nutrient-rich dairy product that contains beneficial microorganisms with potential probiotic applications. Probiotic bacteria are known to support gut health, inhibit pathogenic microorganisms, and enhance the functional value of food products. However, the characterization of probiotic bacteria isolated from Etawa goat milk in Padang, Indonesia, remains limited. Therefore, this study aimed to isolate, characterize, and evaluate the probiotic potential of lactic acid bacteria obtained from Etawa goat milk collected in Padang, Indonesia. Bacterial isolation was performed using de Man, Rogosa, and Sharpe agar medium, followed by purification and characterization based on colony morphology, Gram staining, microscopic observation, and biochemical analysis through catalase testing. The probiotic properties of the isolates were evaluated by assessing their survival under acidic conditions at pH 3.0, resistance to 0.3% bile salts, and antimicrobial activity against Escherichia coli O157 and Staphylococcus aureus using the agar diffusion method. Three bacterial isolates, designated KG, PD, and EL, were successfully obtained from the milk samples. Among them, isolate PD demonstrated characteristics consistent with lactic acid bacteria, including Gram-positive reaction, rod-shaped morphology, and catalase-negative activity. This isolate showed moderate tolerance to acidic conditions, with a survival rate of 32.50%, and high resistance to bile salts, with a survival rate of 80.60%. In addition, PD isolate exhibited strong antimicrobial activity, producing inhibition zones of 19.19 mm against E. coli O157 and 13.79 mm against S. aureus. Molecular identification based on 16S ribosomal ribonucleic acid gene sequencing revealed 100% similarity to Lactobacillus plantarum strain CAU10666. In conclusion, L. plantarum isolate PD from Peranakan Etawa (PE) goat milk demonstrates promising probiotic potential and may be considered a suitable candidate for future development as a functional food ingredient or probiotic culture.
Co-Authors -, Risfaheri -, Urnemi Ade Sukma Adisti Rastosari Adjam, Syarifuddin Agung Rahmadi Ahmad Sobari Amelia, Risky Nuri Anak Agung Istri Sri Wiadnyani Andi Tenri Pada Agustang Andono, Rizky Harsya Anna Farhana Anna Farhana Annisa Farma Annisa Farma Annisa Khaira Anthoni Agustien Aryuni, Vrita Tri Aslinar Aslinar Asnita Ode Samili, Asnita Ode Baruka, Marselina D. Novia Dahlyanti, Rina Dermawan , Very Dian Chandrasasi Didik Tulus Subekti Didik Tulus Subekti Djong Hon Tjong Donny Harisuseno Dwi Nugroho Eka Wulandari Srihadi Putri, Eka Wulandari Srihadi El Latifa Sri Suharto Fatimah Nurhayani Ferawati, . Firda Arlina Gailea, Reka Gustina Lubis Hasim, Jainudin Helmi Arifin Helmi Helmi Helmi Helmi Hendri Purwanto Hernita Pasongli Hidayat, Zoni Husmaini Husmaini Ibnu Rahmadani Indri Juliyarsi Iskandar Zulkarnain James Hellyward Jamhari Jamhari Jamsari Jamsari Jaswandi . Khaira , Annisa Lily Montarcih Limantara Lutfi, Nurhalisa J Maisyaroh Mangku Mundana Marlina Melia, Sri Moh. Sholichin Muhammad Ilham Murni, Yulia Mutmainnah Mutmainnah Mutmainnah Nimas Ayu Anggraini, Nimas Ayu Nurabadi, Ahmad Putra, Aditya Willy Putra, Dino Eka Rahmadani, Ibnu Rasyid, Rusman Rika Afriani Rini Wahyu Sayekti ROHANA SUFIA Rumiyati, Rumiyati Sanusi Ibrahim Sayful, Fery Lismanto Siti Maimunah Sri Rahayu Ningsih Sumanti, Titi Sumaryati Syukur Sumedi Sumedi Syahrilfuddin Syahrilfuddin, Syahrilfuddin Syaiful, Amrie Tamrin Robo Tinda Afriani Urnemi - Ussy Andawayanti Vebriyanti, Ely Very Dermawan Widandi Soetopo Yamin, Fahrun Yorva Sayoeti Yuherman, . Yuliawati Yuni Andriyani Safitri Yurnalis Yurnalis Yusri Dianne Jurnalis Zariul Antosa Zona Octarya Zona Octarya Zulkifli Ahmad