scholarly journals POTENSI KOMBUCHA DAUN TEH (Camellia sinensis) DAN DAUN KOPI ROBUSTA (Coffea robusta) SEBAGAI MINUMAN PROBIOTIK

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Elok Zubaidah ◽  
Kiki Fibrianto ◽  
Soviandini Dwiki Kartikaputri
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Lactic Acid ◽  
Bile Salts ◽  
Tea Leaves ◽  
Total Acid ◽  
Robusta Coffee ◽  
Multiple Attribute ◽  
Kombucha Tea

Kombucha is a plant-based fermented beverage that contains probiotic bacteria such as lactic acid bacteria (LAB). This research was conducted to prove the potential of probiotics in LAB isolates of kombucha tea leaves and robusta coffee leaves with various concentrations. This research used a completely randomized design (CRD). The variables tested were the measurement of total lactic acid bacteria, total acid, and probiotic characterization of LAB isolates (LAB resistance to low pH and bile salts, and antibacterial activity test). The results were analyzed and discussed using ANOVA with a significance level of P < 0.05 only for total acid and descriptive analysis on microbiological response. The best probiotic potency was selected using the multiple attribute method. The results showed that LAB isolates from kombucha tea leaves and robusta coffee leaves with various concentrations had resistance to pH 2 and pH 3, resistance to bile salts 3%, and antibacterial activity against Staphylococcus aureus and Escherichia coli bacteria. The LAB isolate of kombucha robusta coffee leaves at a concentration of 0.6% has the best probiotic potential. Kombucha merupakan minuman fermentasi berbasis tanaman yang mengandung bakteri probiotik seperti bakteri asam laktat (BAL). Penelitian ini dilakukan untuk membuktikan potensi probiotik pada isolat BAL kombucha daun teh dan daun kopi robusta dengan berbagai konsentrasi. Penelitian laboratorium menggunakan rancangan acak lengkap (RAL). Variabel yang diuji adalah pengukuran total bakteri asam laktat, total asam, ketahanan BAL terhadap pH rendah dan garam empedu, serta uji aktivitas antibakteri. Hasil penelitian dianalisa dan dibahas menggunakan ANOVA dengan signifikansi P < 0.05 hanya untuk total asam dan analisa deskriptif pada respons mikrobiologis. Potensi probiotik terbaik dipilih menggunakan metode multiple attribute. Hasil penelitian menunjukkan bahwa isolat BAL dari kombucha daun teh dan daun kopi robusta dengan berbagai konsentrasi memiliki ketahanan terhadap pH 2 dan pH 3, ketahanan terhadap garam empedu 3%, serta aktivitas antibakteri terhadap bakteri Staphylococcus aureus dan Escherichia coli. Isolat BAL kombucha daun kopi robusta pada konsentrasi 0,6% mempunyai potensi probiotik terbaik.

scholarly journals ANTIBACTERIAL ACTIVITY OF ROBUSTA COFFEE (COFFEA CANEPHORA L.) LEAVES TO STAPHYLOCOCCUS AUREUS AND ESCHERICHIA COLI

2019 ◽  
pp. 113-115
Author(s):  
ZAMHARIRA MUSLIM ◽  
YONANIKO DEPHINTO
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Antibacterial Effect ◽  
Ethyl Acetate Fraction ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
E Coli ◽  
Robusta Coffee

Objective: This research aims to analyze the ability of robusta coffee leaves fraction extract to inhibit the growth of Staphylococcus aureus and Escherichia coli and also determine the minimum inhibitory concentration (MIC). Methods: Antibacterial activity evaluated by the disc diffusion method observed in four types of fraction of extract robusta coffee leaves (n-hexane, ethyl acetate, ethanol, and water). Each extract divided into three various concentrations, 5%, 10%, and 15%. Determination of antimicrobial activity in vitro by the disk diffusion method. Results: Ethyl acetate fraction of coffee leaves extract produced the largest diameter zone of inhibition of bacterial growth compared to other extraction fractions of 17.28 mm in E. coli and 18.58 mm in S. aureus. The MIC of coffee leaves extract fraction water, ethyl acetate, and n-hexane on E. coli and S. aureus is 5%, while the fraction ethanol MIC is 10%. Conclusion: The antibacterial effect of ethyl acetate fraction of coffee leaves extract showed an antibacterial effect that was better than the fraction of n-hexane, ethanol, and water.

scholarly journals PERTUMBUHAN ISOLAT BAL ASAL BEKATUL DAN PROBIOTIK KOMERSIAL (Lactobacillus acidophilus dan Lactobacillus casei) PADA MEDIA BEKATUL DAN SUSU SKIM

2014 ◽  
Vol 1 (1) ◽  
pp. 27
Author(s):  
Elok Zubaidah ◽  
Erryana Martati ◽  
Ampu Marojahan Resmanto
Keyword(s):  
Escherichia Coli ◽  
Fatty Acids ◽  
Staphylococcus Aureus ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Rice Bran ◽  
Skim Milk ◽  
Short Chain Fatty Acids ◽  
Salmonella Typhi ◽  
Total Acid

This research was aimed to study the influence of rice bran and skim milk fermentation media on the growth of lactic acid bacteria and their ability in fermenting complex carbohydrates into short chain fatty acids (SCFA). Indigenous lactic acid bacteria (LAB) were isolated from rice bran and commercial probiotic separately and used for fermenting rice bran and skim milk media. Randomized block design was used with 2 factors i.e. fermenting media type and LAB type. The results showed that fermenting rice bran gave significant effect on the LAB growth, indicated by total LAB cell count, total acid concentration, pH and antibacterial activity. The best treatment was J2-B with total LAB count 1.01 ´ 1010 cfu/mL, total acid 1.14%, pH 3.88 and clear zone diameters against Staphylococcus aureus 13.04 mm, Listeria monocytogenes 12.88 mm, Escherichia coli 12.83 mm and Salmonella typhi 12.53 mm. LAB fermenting rice bran for 48 hours produced lactic acid and SCFA. The highest concentrations of lactic acid (122.1313 mM), acetic acid (10.503 mM), and butyric acid (1.56 mM) were produced by fermentation using LAB J2, L. acidophilus, and L. casei isolate, respectively; whereas the highest propionic acid concentration (6,07 mM) was produced by control fermentation.Keywords: Probiotic, indigenous isolate, rice bran, SCFA, skimmed milk ABSTRAKPeneltian ini bertujuan untuk mengetahui pengaruh dedak dan skim milk sebagai media fermentasi bakteri asam laktat, dan kemampuannya mengubah sumber karbon komplek dedak menjadi asam lemak rantai pendek (short chain fatty acids, SCFA). Bakteri asam laktat lokal diisolasi dari dedak dan probiotik. Desain percobaan adalah acak kelompok dengan 2 faktor, yaitu jenis media fermentasi dan jenis bakteri asam laktat. Hasil penelitian menunjukkan bahwa media fermentasi dengan menggunakan dedak menunjukkan pengaruh yang signifikan terhadap pertumbuhan bakteri yang ditunjukkan dari total sel bakteri asam laktat, total asam yang dihasilkan, pH dan aktivitas antibakteri. Fermentasi dengan menggunakan isolat J2-B menghasilkan total bakteri asam laktat 1,01 ´ 1010 cfu/mL, total asam 1,14%, pH 3,88 dan zona hambatan dengan bakteri uji Staphylococcus aureus 13,04 mm, Listeria monocytogenes 12,88 mm, Escherichia coli 12,83 mm dan Salmonella typhi 12,53 mm. Proses fermentasi bakteri asam laktat menggunakan media dedak selama 48 jam mampu menghasilkan asam laktat dan SCFA. Konsentrasi tertinggi asam laktat (122,13 mM), asam asetat (10,50 mM), dan asam butirat (1,56 mM) masing-masing dihasilkan oleh fermentasi menggunakan BAL J2, isolat L. acidophilus, dan isolat L. casei; sedangkan konsentrasi tertinggi asam propionat (6,07 mM) dihasilkan oleh fermentasi kontrol.Kata kunci: Probiotik, isolat lokal, dedak, SCFA, susu skim

scholarly journals Isolation and Identification of Dominant Bacteria from Raw Donkey Milk Produced in a Region of Morocco by QIIME 2 and Evaluation of Their Antibacterial Activity

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Reda Derdak ◽  
Javier Quinteiro ◽  
Souraya Sakoui ◽  
Boutaina Addoum ◽  
Jorge Rodríguez Castro ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Lactic Acid ◽  
Chemical Composition ◽  
Lactic Acid Bacteria ◽  
Donkey Milk ◽  
Antibacterial Effects ◽  
Isolation And Identification ◽  
Dominant Bacteria

Recently, the interest in donkey milk has increased considerably because it proved high nutritive and functional values of their ingredients. Its chemical composition is widely studied, but its microbiota, especially lactic acid bacteria, remains less studied. This study focuses on analyzing, isolating, and identifying lactic acid bacteria and evaluating their capacity to produce biomolecules with antibacterial activity. Among 44 strains identified, 43 are Gram-positive, and most are catalase-negative and cocci-shaped. Five strains were selected to evaluate their antibacterial activity against Listeria monocytogenes, Staphylococcus aureus, and Escherichia coli. Different induction methods allowed to amplify the antibacterial effects against these pathogenic strains.

Viabilitas Bakteri Asam Laktat dan Aktivitas Antibakteri Produk Susu Fermentasi Komersial terhadap Beberapa Bakteri Patogen Enterik

2014 ◽  
Vol 19 (1) ◽  
Author(s):  
Ekawati Purwijantiningsih
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Pathogenic Bacteria ◽  
Antibacterial Effect ◽  
Fermented Milk ◽  
Diffusion Method ◽  
Milk Products

AbstractFermented milk products could be found on the marketplace in great quantities of brand and type. Fermented milk has potentials for functional food because it has health benefits for human body and acts as antimicrobial. However from all brands and types, the viability of lactic acid bacteria (LAB) and antibacterial activity is not surely known, especially in Yogyakarta. The aim of this study was to determine the viability of lactic acid bacteria and antibacterial effect to three enteric pathogenic bacteria. Tests were carried out on 18 samples of fermented milk from supermarkets in Yogyakarta. Base on LAB viability test, 12 samples fulfilled the concentration of probiotic bacteria, number of viable bacteria at least 108 CFU/ml. Antibacterial activity from 18 brands against Staphylococcus aureus, Escherichia coli and Salmonella sp. by using well diffusion method. Fermented milk products have different antibacterial activities. Brand R showed the maximum antibacterial effect against the pathogens. It was determined that the most sensitive pathogenic bacteria to milk fermented products were S. aureus, whereas the least sensitive pathogen was Salmonella sp.Keywords: Antibacterial, fermented milk, viability of lactic acid bacteriaAbstrakProduk susu fermentasi dapat ditemukan di pasaran dalam berbagai merk dan jenis. Susu fermentasi tersebut berpotensi sebagai pangan fungsional karena memiliki manfaat kesehatan bagi manusia dan berperan sebagai antimikrobia. Akan tetapi dari berbagai merk dan jenis yang ada belum diketahui secara pasti mengenai viabilitas bakteri asam laktat (BAL) dan aktivitas antibakterinya terutama yang beredar di wilayah Yogyakarta. Penelitian ini bertujuan mengetahui viabilitas BAL dan efek antibakteri terhadap tiga bakteri patogen enterik. Uji dilakukan pada 18 sampel susu fermentasi yang berasal dari supermaket di kota Yogyakarta. Berdasarkan uji viabilitas BAL, ada 12 sampel yang memenuhi standar konsentrasi bakteri probiotik,paling tidak mengandung 108 CFU/ml. Aktivitas antibakteri dari 18 merk diuji terhadap Staphylococcus aureus, Escherichia coli dan Salmonella sp. menggunakan metode difusi sumuran. Produk minuman susu fermentasi memiliki kemampuan antibakteri yang berbeda. Merk R menunjukkan efek antibakteri paling tinggi terhadap beberapa bakteri patogen. Bakteri patogen yang paling sensitif terhadap produk susu fermentasi adalah S. aureus, yang paling tidak sensitif adalah Salmonella sp.Kata kunci: Antibakteri, susu fermentasi, viabilitas BAL

scholarly journals AKTIVITAS ANTIBAKTERI DAN ANALISIS KLT-BIOAUTOGRAFI DARI FRAKSI BIJI KOPI ROBUSTA (Coffea canephora Pierre ex A. Froehner)

PHARMACON ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 516
Author(s):  
Wazhifa Andarini Paputungan ◽  
Widya Astuty Lolo ◽  
Jainer Pasca Siampa
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Coffea Canephora ◽  
Methanol Fraction ◽  
Robusta Coffee ◽  
Tlc Bioautography ◽  
Coffee Beans

Coffee is a plant that contains compounds such as flavonoids, which have antibacterial activity. The purpose of this study was to determine the fraction of the ethanol extract of robusta coffee beans whether it has an antibacterial effect and know the class of compounds identified after TLC-Bioautography. The extraction method used was maceration with 96% ethanol and fractionation using liquid-liquid method with methanol, n-hexane, and ethyl acetate. Antibacterial testing using the agar diffudion method with concentration of 10%, 20%, 30% respectively. The results of study of 30% methanol fraction for Staphylococcus aureus bacteria have a 12,58 mm inhibition zone and Escherichia coli bacteria 11,60 in the strong category. The largest fraction of the inhibition zone is the 30% methanol fraction of robusta coffee beans was carried out by TLC-Bioautography test using the mobile phase of chloroform : n-hexane (1:2). Tests for antibacterial activity with contact bioautography methods resulted in spotting on the chromatogram, which produces a inhibitory zone. The characteristics of the spots were carried out with the appearance of AlCl3 and dragendorf patches which were suspected to be flavonoids and alkaloids. Keywords : Fraction, Antibacterial, Coffea canephora Pierre ex  A. Froehner, TLC Bioautography.  ABSTRAK Kopi adalah tanaman yang mengandung senyawa antara lain flavonoid yang mempunyai aktivitas antibakteri. Tujuan dari penelitian ini adalah untuk mengetahui fraksi dari ekstrak etanol biji kopi robusta apakah memiliki efek antibakteri dan mengetahui golongan senyawa yang teridentifikasi memiliki aktivitas antibakteri setelah dilakukan pengujian KLT-Bioautografi. Metode ekstraksi yang digunakan adalah maserasi  dengan pelarut etanol 96% dan dilakukan fraksinasi dengan metode cair-cair dengan pelarut metanol, n-heksan, dan etil asetat. Pada pengujian antibakteri menggunakan metode difusi agar dengan konsentrasi 10%, 20%, 30%. Hasil penelitian fraksi metanol konsentrasi 30% untuk bakteri Staphylococcus aureus memiliki zona hambat 12,58 mm dan bakteri Escherichia coli 11,60 mm dengan kategori kuat. Fraksi yang paling besar zona hambatnya yaitu fraksi metanol konsentrasi 30% dilakukan pengujian KLT-Bioautografi menggunakan Bioautografi kontak. Aktivitas antibakteri terhadap fraksi metanol biji kopi robusta dilakukan dengan uji KLT-Bioautografi menggunakan fase gerak kloroform : n-heksan (1:2). Pengujian aktivitas antibakteri dengan metode bioautografi kontak hasil yang diperoleh terdapat bercak pada kromatogram yang menghasilkan zona hambat. Karakteristik bercak dilakukan dengan penampak bercak AlCl3 dan dragendorf  diduga bercak tersebut adalah flavonoid dan alkaloid. Kata kunci : Fraksi, Antibakteri, Coffea canephora Pierre ex A. Froehner, KLT-Bioautografi.

Chemical Composition and Antibacterial Activity of Essential Oils of Three Medicinal Plants from Algerian Semi-Arid Climatic Zone

2018 ◽  
Vol 16 (S1) ◽  
pp. S155-S163 ◽  
Author(s):  
S. Mehalaine ◽  
O. Belfadel ◽  
T. Menasria ◽  
A. Messaili
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Salvia Officinalis ◽  
Thymus Algeriensis

The present study was carried out to determine, for the first time, the chemical composition and antibacterial activity of essential oils derived from the aerial parts of three aromatic plants Thymus algeriensis Boiss & Reut, Rosmarinus officinalis L., and Salvia officinalis L. growing under semiarid conditions. The essential oils were chemically analyzed and identified by gas chromatography (GC) and GC/ mass spectrometry (GC/MS) and their antimicrobial activity was individually evaluated against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa using both agar disk diffusion and agar dilution methods. The major constituents of Thymus algeriensis essential oil were identified as camphor (13.62%), 1,8-cineol (6.00%), borneol (5.74%), viridiflorol (4.00%), and linalool (3.93%). For Rosmarinus officinalis essential oil, 48 compounds were characterized, of which the main constituents were camphor (17.09%), Z-β-ocimene (10.88%), isoborneol (9.68%), α-bisabolol (7.89%), and borneol (5.11%). While, Salvia officinalis essential oil was characterized by β-thujone (16.44%), followed by viridiflorol (10.93%), camphor (8.99%), 1,8-cineol (8.11%), trans-caryophyllene (5.85%), and α-humulene (4.69%) as the major components. Notably, results from antibacterial screening indicated that Thymus algeriensis and Salvia officinalis essential oils exhibited a strong inhibitory effect against both Escherichia coli and Staphylococcus aureus compared to Rosmarinus officinalis essential oil. Further, less activity was recorded against Pseudomonas aeruginosa for the three tested essential oils.

Synthesis of Chalcones and Nucleosides Incorporating [1, 3, 4]Oxadiazolenone Core and Evaluation of their Antifungal and Antibacterial Activities

2020 ◽  
Vol 15 (6) ◽  
pp. 665-679
Author(s):  
Alok K. Srivastava ◽  
Lokesh K. Pandey
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Bacillus Subtilis ◽  
Antifungal Activity ◽  
Aspergillus Niger ◽  
Gram Negative ◽  
E Coli ◽  
Gram Positive Bacteria ◽  
Good Antibacterial Activity

Background: [1, 3, 4]oxadiazolenone core containing chalcones and nucleosides were synthesized by Claisen-Schmidt condensation of a variety of benzaldehyde derivatives, obtained from oxidation of substituted 5-(3/6 substituted-4-Methylphenyl)-1, 3, 4-oxadiazole-2(3H)-one and various substituted acetophenone. The resultant chalcones were coupled with penta-O-acetylglucopyranose followed by deacetylation to get [1, 3, 4] oxadiazolenone core containing chalcones and nucleosides. Various analytical techniques viz IR, NMR, LC-MS and elemental analysis were used to confirm the structure of the synthesised compounds.The compounds were targeted against Bacillus subtilis, Staphylococcus aureus and Escherichia coli for antibacterial activity and Aspergillus flavus, Aspergillus niger and Fusarium oxysporum for antifungal activity. Methods: A mixture of Acid hydrazides (3.0 mmol) and N, Nʹ- carbonyl diimidazole (3.3 mmol) in 15 mL of dioxane was refluxed to afford substituted [1, 3, 4]-oxadiazole-2(3H)-one. The resulted [1, 3, 4]- oxadiazole-2(3H)-one (1.42 mmol) was oxidized with Chromyl chloride (1.5 mL) in 20 mL of carbon tetra chloride and condensed with acetophenones (1.42 mmol) to get chalcones 4. The equimolar ratio of obtained chalcones 4 and β -D-1,2,3,4,6- penta-O-acetylglucopyranose in presence of iodine was refluxed to get nucleosides 5. The [1, 3, 4] oxadiazolenone core containing chalcones 4 and nucleosides 5 were tested to determined minimum inhibitory concentration (MIC) value with the experimental procedure of Benson using disc-diffusion method. All compounds were tested at concentration of 5 mg/mL, 2.5 mg/mL, 1.25 mg/mL, 0.62 mg/mL, 0.31 mg/mL and 0.15 mg/mL for antifungal activity against three strains of pathogenic fungi Aspergillus flavus (A. flavus), Aspergillus niger (A. niger) and Fusarium oxysporum (F. oxysporum) and for antibacterial activity against Gram-negative bacterium: Escherichia coli (E. coli), and two Gram-positive bacteria: Staphylococcus aureus (S. aureus) and Bacillus subtilis(B. subtilis). Result: The chalcones 4 and nucleosides 5 were screened for antibacterial activity against E. coli, S. aureus and B. subtilis whereas antifungal activity against A. flavus, A. niger and F. oxysporum. Compounds 4a-t showed good antibacterial activity whereas compounds 5a-t containing glucose moiety showed better activity against fungi. The glucose moiety of compounds 5 helps to enter into the cell wall of fungi and control the cell growth. Conclusion: Chalcones 4 and nucleosides 5 incorporating [1, 3, 4] oxadiazolenone core were synthesized and characterized by various spectral techniques and elemental analysis. These compounds were evaluated for their antifungal activity against three fungi; viz. A. flavus, A. niger and F. oxysporum. In addition to this, synthesized compounds were evaluated for their antibacterial activity against gram negative bacteria E. Coli and gram positive bacteria S. aureus, B. subtilis. Compounds 4a-t showed good antibacterial activity whereas 5a-t showed better activity against fungi.

The Preparation of Carbon Microspheres Loading Silver Antimicrobial Agent and the Study of its Properties

2012 ◽  
Vol 550-553 ◽  
pp. 1026-1029
Author(s):  
Jian Xi Ren ◽  
Jing Ya Li ◽  
Zhi Feng Cai ◽  
Jin Ming Dai ◽  
Mei Niu ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Electron Microscope ◽  
Antibacterial Agent ◽  
Chemical Adsorption ◽  
Carbon Microspheres ◽  
Bacterial Inhibition ◽  
Good Antibacterial Activity ◽  
Scanning Electron

Carbon microspheres (CMSs) were used as the carrier to prepare the Ag-loading CMSs (Ag/CMSs) antibacterial agent through the method of chemical adsorption. The morphologies and structures of modified CMSs were characterized by using the field emission Scanning Electron Microscope (SEM). The results showed that silver was absorbed on the surface of CMSs. The bacterial inhibition ring experiment showed that Ag/CMSs had good antibacterial activity against Staphylococcus aureus and Escherichia coli, meanwhile the diameters of the bacterial inhibition rings were 19 mm against Staphylococcus aureus and 21 mm against Escherichia coli, respectively.

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