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Andre Andre

Indonesia International Institute for Life Sciences

Author-ID : 4070113

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Medicine & Pharmacology

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1

Comparison of Antimicrobial Activity between Ethanolic Extract and Essential Oil of Ginger (Zingiber officinale) against Food-borne Bacteria Shania Foustine; Andre Andre; Bastian Setiadi; Leonny Yulita Hartiadi; Agnes Anania Triavika Sahamastuti
Indonesian Journal of Life Sciences 2019: IJLS Vol 01 No .02
Publisher : Indonesia International Institute for Life Sciences

Background: Ginger (Zingiber officinale) is one of the most well-known spices with antimicrobial activity. However, different extraction methods of ginger will result in different antimicrobial properties due to the various substances extracted. This study aimed to compare antimicrobial activity between ethanolic extract and essential oil of ginger against food-borne bacteria grown in 2.1% Mueller Hinton agar. Methods: Fresh ginger rhizomes were extracted either by using vapor distillation method or maceration using ethanol to obtain ginger essential oils (GEO) and ginger ethanolic extract (GEE), respectively. Ethanolic extract and essential oil of ginger at different concentrations were then tested for their antimicrobial activity using disk diffusion method against Escherichia coli, Bacillus subtilis, Salmonella typhi, and Staphylococcus aureus. Tetracycline was also used as a standard of antibacterial agent. Results: Ginger essential oil in 25%, 50%, and 100% showed significant growth inhibition of four types of bacteria compared to ginger ethanolic extract. This antimicrobial effect of ginger essential oil was shown to be dose-dependent. However, it has been demonstrated that ginger ethanolic extract 50% and 100% has a stronger antimicrobial effect against B.subtilis. Conclusion: Ginger essential oil and ethanolic extract showed different degree of antibacterial activity against food-borne bacteria due to compound contained within respective extracts, with a higher degree of activity found in ginger essential oil. These may show that different ginger extract may have different antibacterial activity.

Combination of Piper betel Leaves and Areca catechu Nuts Ethanolic Extract Effects on In Vitro Antimicrobial Test against Aerobic Mouth Microbiota Raymond Christanto; Andre Andre; Shania Foustine; Leonny Yulita Hartiadi
Indonesian Journal of Life Sciences 2019: IJLS Vol 01 No .02
Publisher : Indonesia International Institute for Life Sciences

Introduction: Oral health awareness in Indonesia is still low with more and more oral and/or dental infection becomes more prevalent such as gingivitis, endodontitis, and pericoronitis. These infections could be caused by mouth microflora such as lactobacilli, Streptococcus mutans, Streptococcus mitis, Streptococcus oralis, and Streptococcus sobrinus. As time goes by, these bacteria could also become more problematic as antibacterial resistance emerges. Betel nut and betel leaf are well known traditional herbs that is often used in combination for "nyirih"; an Indonesian tradition to chew both plants often after meal. It is believed that these plants treat bad breath and also increases oral health as it could inhibit bacterial growth. Method: Betel nut and betel leaf were dried, powdered and macerated using 96% ethanol. The extract was tested on mouth microflora of volunteers grown in BHI using agar using disk diffusion test and modified E-test strip. Results: The betel leaves extract showed antibacterial activity in most of concentration used (1.25%, 2.5%, 5%, 10%) while betel nuts only gave antimicrobial effect in 10% concentration. The E-test results also showed the synergistic action between Piper betel leaves and Areca catechu nuts with some giving significant difference compared to the single treatment (P<0.05). Conclusion: Piper betel leaves gives antimicrobial effect with MIC value of 1.25% while Areca catechu have MIC value of 10%. Furthermore, combination of both resulted in synergistic effect as indicated with larger diameter of inhibition compared to the single treatments.

Synergistic Antibacterial Activities of Ginger and Lemongrass Essential Oils as an Alternative Prevention to Food-Borne Disease Agnes Anania Triavika Sahamastuti; Andre Andre; Shania Foustine; Anton Sumarpo; Leonny Yulita Hartiadi
Indonesian Journal of Life Sciences 2019: IJLS Vol 01 No .02
Publisher : Indonesia International Institute for Life Sciences

Background: Lemongrass and ginger are traditional food ingredients in Asian countries, including Indonesia, Thailand, India, and Malaysia. Although their single essential oil has been assessed for its antibacterial activities, no report has been done for their combination. Material and methods: Our study evaluated single and combination of these herbs for their antibacterial properties against food-borne bacteria E. coli (NEB® catalog No. C2989K), B. subtilis (ATCC 6633), S. typhi (ATCC 14028) and S. aureus (InaCC B4). Essential oil of lemongrass and ginger were obtained by steam distillation and their antimicrobial were evaluated using disk diffusion assay with chloramphenicol as the standard antibiotic. Synergistic activity was assessed using the combination of materials at two or four-fold dilution from their respected MIC value. Results: We confirmed that single lemongrass and ginger essential oils inhibited the bacteria growth with MIC value of about 1-5% and 2.5-5%, respectively. Moreover, their synergism activities were observed when both were mixed at two-fold dilution from their respective MIC. Conclusion: We conclude that the combination of the ginger essential oils and lemongrass essential oils may have potential as a natural preservative to prevent food-borne diseases.

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