Potensi Beberapa Isolat Probiotik sebagai Antibakteri terhadap Pertumbuhan Vibrio Spp.

The research about potential of some probiotic isolates as an antibacterial on the growth of Vibrio spp had been done. This research aimed to know the antibacterial potency from some isolates probiotic on the growth of Vibrio spp. This research to tested the inhibition on the three species of Vibrio that are Vibrio harveyi, Vibrio prahaemolyticus, and Vibrio cholerae using agar diffusion method. Probiotic isolates come from lactic acid bacteria group that provide beneficial effects on health and its host. Used also commercial probiotic (S.NB) as a positive control. From the results of the inhibitory effect on the growth of pathogenic bacteria test showed all isolates probiotics have the ability to inhibit Vibrio spp. At 1 x 24-hour observation shown isolates B most excellent in inhibiting the growth of Vibrio harveyi, against Vibrio parahaemolyticus obtained isolates C most excellent inhibited bacteria, whereas against Vibrio cholerae isolates H was most excellent in inhibiting the pathogenic bacteria. After 2 x 24 hours observation was to known that all isolates probiotics used have the ability as antibacterial that was bactericidal on the growth of Vibrio harveyi, Vibrio parahaemolyticus and Vibrio cholera

Aktivitas Antimikroba Ekstrak Dietil Eter Rimpang Lempuyang Wangi (Zingiber Aromaticum Vahl.) terhadap Bakteri Patogen secara Klt-Bioautografi

Antimicrobial Activity of Dietil Eter extract of Lempuyang Wangi Rimpang (Zingiber aromaticum Vahl.) to pathogen bacterial through TLC-Bioautography. Research has done by screening test using Streptococcus mutans, Vibrio sp, Pseudomonas aeruginosa, Bacillus subtilis, Staphylococcus epidermidis, Staphylococcus aureus, Salmonella typhi, Escherichia coli and Candida albicans by methanol extract, diethyl ether extract and n-buthanol extract which were use 1 mg/ml. Result which obtained exhibit diethyl ether extract inhibit the growth of Bacillus subtilis, Salmonella typhi, Staphylococcus epidermidis, and Vibrio sp. Antimicrobial potential assay of diethyl ether extract of Zingiber aromaticum Vahl. has done by liquid dilution method to get the MIC value in concentration of 0,05 %, 0,1 %, 0,2 %, 0,4%, and 0,8 % which continued by smearing on solidified medium to get the MLC value. The result shown that MKC could not be determined due to turbidity of the test solution mean while the MLC of the extract as much as 0,2 % on Bacillus subtilis and Salmonella typhi and 0,4 % on Staphylococcus epidermidis and Vibrio sp. TLC-bioautography test has done to get the compound which had antimicrobial activity. The best result was obtained from separation through TLC-bioautography by means of eluent n-hexan : ethyl acetate (8 : 2). TLC-bioautography test result shown that the spot in Rf 0,07 has antimicrobial activity on Staphylococcus epidermidis, Rf 0,2 has antimicrobial activity on Vibrio sp., Rf 0,07, 0,45, 0,56 and 0,69 has antimicrobial activity on Bacillus subtilis, and Rf 0,2 has antimicrobial activity on Salmonella typhi. Identification result of the chemical component shown that the active compound which given positif result on spot viewer were in Rf 0,07; 0,2; 0,45; 0,56; and 0,69

Comparison Of Probiotic Isolate Growth In Natural Culture With Various Carbon Sources: Perbandingan Pertumbuhan Isolat Probiotik pada Media Alami dengan Berbagai Jenis Sumber Karbon

Probiotik merupakan mikroba hidup yang memberikan pengaruh menguntungkan pada inang karena dapat menyeimbangkan mikroba yang ada dalam saluran pencernaan menjadi meningkat. Pemanfaatan tersebut dapat memberikan pengaruh positif dan kesehatan bagi inang sehingga sangat baik untuk diaplikasikan. Pemanfaatan bahan alami dapat menekan biaya media tumbuh sehingga perlu penggantian media sintetik dengan media alami karena memiliki harga yang relatif lebih murah tetapi mengandung nutrien penting bagi pertumbuhan mikroba. Tujuan penelitian ini adalah untuk mengetahui pertumbuhan isolat probiotik berdasarkan lama waktu kutur dalam media alami yang mengandung sumber karbon berbeda. Pertumbuhan isolat probiotik dalam berbagai sumber karbon dilakukan melalui metode Standard Plate Count (SPC). Melalui metode SPC didapatkan jumlah koloni isolat G dari masing-masing media berupa kanji, sagu, dan dedak yaitu 2,3 x 108 Cfu/mL, 6,4 x 106 Cfu/mL, dan 4,3 x 106 Cfu/mL selama 48 jam; 2,6 x 108 Cfu/mL, 1,6 x 108 Cfu/mL, dan 1,0 x 108 Cfu/mL selama 96 jam; 4,6 x 108 Cfu/mL, 1,8 x 108 Cfu/mL, dan 1,2 x 108 Cfu/mL selama 144 jam. Hasil yang didapatkan menunjukkan bahwa isolat G mampu ditumbuhkan dalam media alami berupa kanji, sagu dan dedak