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      Karakteristik Limosilactobacillus fermentum 5.1.2 Asal Tempe sebagai Kandidat Probiotik

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      Date
      2025
      Author
      Kusuma, Widiya
      Meryandini, Anja
      Sunarti, Titi Candra
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      Abstract
      Pola makan vegan menjadi pilihan popular untuk mendukung kesehatan tubuh dan pencegahan terhadap penyakit. Makanan yang dikonsumsi vegan di antaranya sayur-sayuran, buah-buahan, kacang-kacangan, kedelai, tahu, dan tempe. Walaupun demikian, diperlukan konsumsi probiotik untuk menjaga keseimbangan mikrobiota usus. Probiotik banyak dijumpai pada makanan fermentasi. Bakteri Asam Laktat (BAL) merupakan jenis bakteri terbesar yang berperan sebagai probiotik. Penelitian terdahulu telah mengisolasi BAL Limosilactobacillus fermentum 5.1.2 dari tempe yang mampu mensintesis vitamin B12. Penelitian ini bertujuan mengkarakterisasi bakteri L. fermentum 5.1.2 sebagai kandidat probiotik. Metode yang dilakukan meliputi pengamatan morfologi, uji toleransi kondisi asam, uji toleransi garam empedu, autoagregasi, koagregasi, uji viabilitas sel, dan uji total asam. Bakteri L. fermentum 5.1.2 menunjukkan kemampuan kelangsungan hidup pada pH 3 sebesar 93.93%. Sementara pada konsentrasi garam empedu 0.5% kelangsungan hidup mencapai 73.22%. Nilai autoagregasi isolat 5.1.2 sebesar 61.75%, sedangkan nilai koagregasi tertinggi terhadap E. coli mencapai 44.52%. Bakteri L. fermentum 5.1.2 juga menunjukkan viabilitas sel yang baik setelah disimpan pada susu kedelai selama 7 hari pada suhu 10oC. L. fermentum 5.1.2 tidak mengalami perubahan jumlah sel secara signifikan pada susu kedelai, sehingga tidak menyebabkan perubahan kandungan total asam. Hasil uji tersebut menunjukkan bakteri L. fermentum 5.1.2 asal tempe merupakan kandidat probiotik yang baik.
       
      Vegan diets are becoming a popular choice to support a healthy body and prevent disease. Vegan foods include vegetables, fruits, nuts, soy, tofu, and tempeh. However, it is necessary to consume probiotics to maintain the balance of the gut microbiota. Probiotics are commonly found in fermented foods. Lactic Acid Bacteria (LAB) are the largest type of bacteria that act as probiotics. Previous research has isolated LAB Limosilactobacillus fermentum 5.1.2 from tempeh which is able to synthesize vitamin B12. This study aims to characterize L. fermentum 5.1.2 bacteria as probiotic candidates. The methods included morphological observation, acid condition tolerance test, bile salt tolerance test, autoaggregation, coaggregation, cell viability test, and total acid test. L. fermentum 5.1.2 bacteria showed the ability to survive at pH 3 of 93.93%. While at a bile salt concentration of 0.5%, survival reached 73.22%. The autoaggregation value of isolate 5.1.2 was 61.75%, while the highest coaggregation value against E. coli reached 44.52%. L. fermentum 5.1.2 also showed good cell viability after being stored in soy milk for 7 days. L. fermentum 5.1.2 did not significantly decrease or increase the number of cells in soy milk, so the total acid produced was also not significantly different. These test results indicate that L. fermentum 5.1.2 from tempeh is a good probiotic candidate.
       
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      http://repository.ipb.ac.id/handle/123456789/162766
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      Indonesia DSpace Group 
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