Comparison of Characteristics and Antibacterial Activity of Mandai Cempedak Vinegar with Variations in Fermentation Methods

Indah Woro Utami (1) , Sapri Sapri (2) , Nishia Waya Meray (3) , Rezia Elok Canrika (4)
(1) Universitas Mulia , Indonesia
(2) Universitas Mulia , Indonesia
(3) Universitas Mulia , Indonesia
(4) Universitas Mulia , Indonesia

Abstract

Mandai, a traditional fermented food product from East Kalimantan, is derived from the edible mesocarp of the cempedak (Artocarpus champeden) fruit. This ancestral fermentation technique, passed down through generations, is known to produce lactic acid bacteria (LAB) with potential probiotic properties. This study aimed to characterize LAB isolated from mandai vinegar and evaluate their antibacterial activity under two distinct fermentation conditions: a defined starter culture of Lactobacillus casei strain Shirota and spontaneous fermentation in a 10% NaCl solution. The latter, referred to as salt fermentation, yielded three bacterial colonies, while the starter culture method produced four. All isolates from both methods shared similar morphological characteristics, including a rod shape, white coloration, entire margins, and convex surfaces. Further analysis confirmed they were Gram-positive, catalase-negative, and indole-negative, with the ability to ferment various carbohydrates. While all LAB isolates demonstrated generally low antibacterial activity against Escherichia coli ATCC 25922, isolate CML 1 exhibited the highest antibacterial potential. These findings highlight the potential of mandai vinegar as a source of functional LAB, warranting further investigation into its applications as a functional food ingredient.

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Authors

Indah Woro Utami
indah.utami@universitasmulia.ac.id (Primary Contact)
Sapri Sapri
Nishia Waya Meray
Rezia Elok Canrika
Author Biographies

Indah Woro Utami, Universitas Mulia

Department of Pharmaceutical Biology, Universitas Mulia, Balikpapan, East Kalimantan, Indonesia

Sapri Sapri, Universitas Mulia

Department of Pharmacy, Universitas Mulia, Balikpapan, East Kalimantan, Indonesia

Nishia Waya Meray, Universitas Mulia

Department of Pharmaceutical Chemistry, Universitas Mulia, Balikpapan, East Kalimantan, Indonesia

Rezia Elok Canrika, Universitas Mulia

Department of Pharmacy, Universitas Mulia, Balikpapan, East Kalimantan, Indonesia

1.
Utami IW, Sapri S, Meray NW, Canrika RE. Comparison of Characteristics and Antibacterial Activity of Mandai Cempedak Vinegar with Variations in Fermentation Methods. Borneo J Pharm [Internet]. 2025Aug.30 [cited 2025Dec.5];8(3):263-71. Available from: https://journal.umpr.ac.id/index.php/bjop/article/view/9140

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