Changes of physicochemical properties, bioactive compound, antioxidant and antimicrobial activity in tamarillo fruit juice (Solanum betaceum Cav.) during fermentation by Lactobacillus plantarum
Abstract
This study aimed to examine changes in physical and chemical properties, bioactive components, and antimicrobial and antioxidant activities in tamarillo fruit juice fermented by Lactobacillus plantarum. Tamarillo fruit juice was fermented for 96 hours. The total microbial, titrated acid and pH were tested during fermentation every 6 hours. Changes in color, viscosity, total phenolic, total flavonoid, anthocyanin, and antioxidant activity were tested at 0, 24, 72, and 96 hours. The results showed that L. plantarum could grow well on tamarillo fruit juice, which was characterized by an increase in the number of cells from 2.6×107 CFU/mL (0 hours) to 7.3×108 CFU/mL (24 hours) and 3.8×1012 CFU/mL (96th hour). Fermentation of tamarillo fruit juice by L. plantarum caused a decrease in pH from 3.62 to 3.31 and increased total titrated acid from 1.58% to 2.49%. The antioxidant activity continued to decrease during fermentation. In contrast, the antimicrobial activity increased against Bacillus subtilis and Staphylococcus aureus. It can be concluded that the fermentation process causes changes in the physical, chemical, and bioactive components of tamarillo fruit extract and has an impact on reducing antioxidant activity but increasing antimicrobial activity.
Keywords
References
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Details
Primary Language
English
Subjects
Pharmaceutical Sciences
Journal Section
Research Article
Authors
Marlia Singgih
*
This is me
0000-0002-5351-1731
Indonesia
Elin Julianti
This is me
0000-0002-5504-6140
Indonesia
Tri Suciati
This is me
0009-0006-1309-823X
Indonesia
Istiyati Inayah
This is me
0000-0003-2522-7829
Indonesia
Publication Date
May 11, 2026
Submission Date
December 23, 2023
Acceptance Date
March 19, 2024
Published in Issue
Year 2026 Volume: 30 Number: 3