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All Journal Jurnal Pendidikan IPA Indonesia Kreano, Jurnal Matematika Kreatif-Inovatif Tropical Animal Science Journal
Z. Abidin
Jurusan Matematika FMIPA Universitas Negeri Semarang
Agriculture, Biological Sciences & Forestry Education Energy Mathematics

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Journal : Tropical Animal Science Journal

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Profiling of Dominant Bacteria in Traditional Buffalo Milk Cheese “Dangke” Based on 16S rRNA Sequencing Mutmainna, A.; Arief, I. I.; Budiman, C.; Abidin, Z.; Wulandari, Z.
Tropical Animal Science Journal Vol. 48 No. 5 (2025): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2025.48.5.450

Abstract

Metagenomic approaches are highly valuable in food microbiology, particularly for the investigation of traditional fermented products such as dangke buffalo milk cheese from South Sulawesi, Indonesia. Buffalo milk, a primary raw material, contains diverse biochemical and bioactive components that are produced by microbial activity during fermentation. Unlike conventional culture-based techniques, metagenomics enables the comprehensive characterization of microbial communities directly from food matrices. This study aimed to identify the key microbial taxa that contribute to the dangke quality of fermentation and to understand the factors influencing it. Bacterial 16S rRNA genes were amplified using primers 27F and 1492R under optimized polymerase chain reaction conditions. DNA concentrations were measured with NanoDrop and Qubit instruments, and sequencing was conducted using Oxford Nanopore Technology with MinKNOW software (v23.04.5). Metagenomic analysis revealed Enterococcus faecium as the dominant lactic acid bacterium across all dangke samples (P1–P3), emphasizing its crucial role in fermentation and probiotic potential. These findings suggest that E. faecium can enhance the quality and functional properties of dangke. Moreover, metagenomic tools can support the development of standardized fermentation practices and microbial safety assessments for traditional dairy products.
Characteristics, Antioxidant, and Antihypertensive Activities of Probiotic Greek Yogurt with Roselle Extract Addition Juandini, P. A.; Arief, I. I.; Wulandari, Z.; Abidin, Z.
Tropical Animal Science Journal Vol. 47 No. 2 (2024): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2024.47.2.235

Abstract

Yogurt is one example of a functional food that can improve health and reduce the risk of diseases. Certain ingredients, such as probiotic bacteria and roselle extract, are added to yogurt to enhance its benefits. The utilized probiotic, Lactobacillus plantarum IIA-1A5, provides notable antimicrobial benefits. Additionally, the incorporated roselle extract is established to possess antioxidant and antihypertensive properties. This study aims to analyze the characteristics, antioxidant, and antihypertensive activities of probiotic Greek yogurt (PGY) and probiotic Greek yogurt with roselle extract (PGYR). The roselle extract added to the Greek probiotic yogurt was 3%, and the bacteria used in the fermentation process for both treatments were S. thermophilus IFO 13957, L. bulgaricus IFO 13953, and L. plantarum IIA-1A5. Each treatment was replicated three times in duplicate. The results showed that the addition of roselle extract to probiotic Greek yogurt significantly influenced (p<0.05) the antioxidant and antihypertensive activity, water activity (aw), pH, total acidity (TAT), and the color aspect in the hedonic test and the flavor, color, and aroma aspects in the hedonic quality test. The antioxidant activity and antihypertensive activity tests yielded significantly different results. The antioxidant activity increased from 29.32% (PGY) to 44.93% (PGYR), while the antihypertensive activity increased from 35.68% (PGY) to 81.36% (PGYR). This study concluded that the characteristics of PGYR have met the SNI standards and have a higher antioxidant and antihypertensive activity value than PGY. PGYR also has a promising potential for commercial development due to its health benefits.
Co-Authors A. Rusilowati Arief, I. I. Ariyanti, S. W. Budiman, C. Hidayah, I. Hutagalung, F. D. Juandini, P. A. Mutmainna, A. N.I. Aristin Nugrahani, R. Sofchah, T. Wulandari, Z.