1. Presson, J., L. Pardosi, J. Mamangkey and D.F. Hanas, 2022. Isolation of symbiont bacteria of Stylissa massa as potential candidates for producing antimicrobial compounds from the Waters of Rote Island, East Nusa Tenggara, Indonesia. Int. J. Aquat. Biol., 10: 451-459.
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2. Mamangkey, J., 2022. Effect of substitution of Kaopi and anchovy flour based on the nutritional values, organoleptic, and total microbe of 'Kasuami/kasoami'. Int. J. Sci. Res. Biol. Sci., 9: 14-22.
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3. Gordi, I., J. Mamangkey and M. Silalahi, 2022. The diversity of vegetable and fruit fresh traded in the traditional and modern markets in the Bekasi, West Java and its potential. GSC Biol. Pharm. Sci., 20: 100-109.
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4. Aritonang, R., J. Mamangkey, D. Suryanto, E. Munir and A. Hartanto, 2022. Potential of keratinolytic fungi isolated from chicken and goat farms soil, North Sumatra. Curr. Res. Environ. Appl. Mycol. J. Fungal Biol., 12: 15-27.
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5. Yanti, N.A., S.W. Ahmad, L.O.A.N. Ramadhan, Jamili, Muzuni, T. Walhidayah and J. Mamangkey, 2021. Properties and application of edible modified bacterial cellulose film based sago liquid waste as food packaging. Polymers, Vol. 13. 10.3390/polym13203570.
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6. Razad, A., G.A.K. Sutariati, T.C. Rakian, J. Mamangkey and M. Silalahi, 2021. Bio-priming using indigenous Pseudomonas fluorescens to improve local upland rice (Padi gogo) production of paebiu kolopua and pae wuna cultivars. Int. J. Sci. Technol. Manage., 2: 1885-1899.
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7. Mamangkey, J., D. Suryanto, E. Munir, A.Z. Mustopa and M.T. Sibero, et al., 2021. Isolation and enzyme bioprospection of bacteria associated to Bruguiera cylindrica, a mangrove plant of North Sumatra, Indonesia. Biotechnol. Rep., Vol. 30. 10.1016/j.btre.2021.e00617.
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8. Mamangkey, J., D. Suryanto, E. Munir and A.Z. Mustopa, 2020. Promoting keratinase activity from newly identified strain Strenotrophomonas maltophilia B6 through optimization and characterization. Malays. Appl. Biol., 49: 75-86.
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9. Mamangkey, J., D. Suryanto, E. Munir and A.Z. Mustopa, 2020. Keratinase activity of a newly keratinolytic bacteria, Azotobacter chroococcum B4. J. Pure Appl. Microbiol., 14: 1203-1211.
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10. Munir, E., J. Mamangkey, A. Lutfia and Yurnaliza, 2019. Antibacterial and phosphate solubilization activity of endophytic bacteria isolated from Pterydophyta (Tectaria barberi). IOP Confer. Ser.: Earth Environ. Sci., Vol. 305. 10.1088/1755-1315/305/1/012019.
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11. Mamangkey, J., D. Suryanto, E. Munir, A. Lutfia, A. Hartanto and M.K. Huda, 2019. First report of plant growth promoting endophytic bacteria from medicinal invasive plants (Chromolaena odorata). IOP Conf. Ser.: Earth Environ. Sci., 305. 10.1088/1755-1315/305/1/012091.
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12. Mamangkey, J., D. Suryanto, E. Munir and A.Z. Mustopa, 2019. Keratinolytic fungi isolated from Asam Kumbang Crocodile Breeding Farm, Medan, North Sumatra. IOP Conf. Ser.: Earth Environ. Sci., Vol. 305. 10.1088/1755-1315/305/1/012084.
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13. Mamangkey, J., D. Suryanto, E. Munir and A.Z. Mustopa, 2019. Isolation, molecular identification and verification of gene encoding bacterial keratinase from crocodile (Crocodylus porosus) feces. IOP Conf. Ser.: Earth Environ. Sci., Vol. 305. 10.1088/1755-1315/305/1/012085.
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