In Vitro Evaluation of Aromatic Galangal Extract as a Feed Additive on Pathogenic Bacteria in the Super Kampong Chicken Digestive Tract
In Vitro Evaluation of Aromatic Galangal Extract as a Feed Additive on Pathogenic Bacteria in the Super Kampong Chicken Digestive Tract
Wahyu Widodo1*, Adi Sutanto1, Imbang Dwi Rahayu1, Ivar Zekker2, Bayu Agung Prahardika3,
Apriliana Devi Anggraini1, Trisakti Handayani1 and Yuanara Augusta Rahmat Adikara4
ABSTRACT
Aromatic galangal as one of the herbal ingredients has a relatively high amount of curcumin compounds that can be used as a feed additive. This curcumin can inhibit and kill pathogenic bacteria in the digestive tract of Super Kampong chickens. The purpose of this study was to evaluate aromatic galangal (Kaempferia galanga) extract. Aromatic galangals from Lumajang Regency, East Java Indonesia – a high curcumin content of 39.5 µg g–1 used in this study. The concentrations of 0.78 %, 1.56 %, 3.12 %, 6.25 %, 12.50 %, 25.00 %, and 50.00 % used for the inhibition zone variables. The Minimum Inhibitory Concentration (MIC) and Minimum Kill Concentration (MKC) were 0.125 %, 0.250 %, 1.500 %, 3.125 %, 6.250 %, 12.500 %, 25.000 % and 50.000 %. The treatment was performed in duplicate. The bacteria used in this test were Clostridium, Campylobacter, Pseudomonas multocida, Salmonella, Staphylococcus aureus, Streptococcus spp., and Escherichia coli. The quantitative descriptive data analysis was presented in both formal and informal forms. The result of study showed that E. coli had the highest sensitivity to aromatic galangal extracts compared to the other bacteria. At the same concentration of aromatic galangal extract, which was 0.75 %, the inhibition zone was the highest, which was 7.98 mm ± 1.77 mm, at a concentration of 50 %, the inhibition zone was 19.67 mm ± 1.71 mm. Aromatic galangal extract can inhibit E. coli at a concentration of 0.125 % but cannot kill bacteria. As conclusion demonstrated that aromatic galangal extract is only associated with the inhibition of pathogenic bacteria but also have the ability to kill theses pathogenic bacteria isolated from the digestive tract of Super Kampong chickens.
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July 2023
Vol. 39, Sp. Iss. 1
