scholarly journals KARAKTERISASI DAN IDENTIFIKASI BAKTERI RIZOSFER TANAMAN SAWIT JAMBI

2019 ◽  
Vol 12 (2) ◽  
pp. 198-206
Author(s):  
Khairani Khairani ◽  
Fitratul Aini ◽  
Hesti Riany
Keyword(s):  
Acetic Acid ◽  
Oil Palm ◽  
Pathogenic Bacteria ◽  
Biochemical Characterization ◽  
Growth Hormones ◽  
Rhizosphere Bacteria ◽  
Acid Phosphate ◽  
Bacterial Genus ◽  
Indol Acetic Acid ◽  
Conventional Methods

AbstrakBakteri rizosfer adalah bakteri yang terdapat pada daerah perakaran tanaman yang diketahui memiliki keanekaragaman tinggi. Bakteri rizosfer memiliki berbagai peran seperti menyediakan nutrisi bagi tanaman, melindungi tanaman dari infeksi bakteri patogen, menghasilkan hormon pertumbuhan seperti indol acetic acid, pelarut fosfat, pengikat nitrogen, dan lain-lain. Dengan berbagai kemampuan dan peran tersebut, maka perlu eksplorasi bakteri rizosfer tanaman sawit khususnya di daerah perkebunan agar diketahui kelompok bakteri rizosfer, sehingga dapat dimanfaatkan secara optimal. Penelitian ini bertujuan untuk mengetahui kelompok dan keragaman bakteri rizosfer pada tanaman sawit yang berumur 8, 11, dan 14 tahun. Penelitian dilakukan dengan pendekatan konvensional dengan karakterisasi morfologi dan uji biokimia. Dari umur-umur tersebut, didapatkan 18 isolat yang terdiri dari 11 genus, yaitu Bacillus, Azospirillum, Actinobacillus, Xanthobacter, Enterococcus, Paenibacillus, Klebsiella, Pseudomonas, Arthrobacter, Micrococcus, dan Streptococcus. Bakteri rizosfer tanaman sawit memiliki keragaman genus yang sama pada umur 8, 11, dan 14 tahun. Genus bakteri yang didapatkan dapat dimanfaatkan sebagai PGPR (Plant Promoting Rhizobacteria).Abstract Rhizosphere bacteria are bacteria found in root areas. Rhizosphere bacteria have various roles such as providing nutrients for plants, protecting plants from infection pathogenic bacteria, producing growth hormones such as indol acetic acid, phosphate solvents, nitrogen binders, and others. By having these various abilities and roles, it is necessary to explore the bacteria of oil palm plants, especially in the plantation areas so that the group of rhizosphere bacteria can be identified and then utilized optimally. This study aims to determine the group and diversity of rhizosphere bacteria in oil palm plants that are 8, 11, and 14 years old. The research was conducted conventionally by observing morphological and biochemical characterization. At those ages, 18 isolates were consisting of 11 genera, namely Bacillus, Azospirillum, Actinobacillus, Xanthobacter, Enterococcus, Paenibacillus, Klebsiella, Pseudomonas, Arthrobacter, Micrococcus, and Streptococcus through conventional methods. Rhizosphere bacteria in oil palm plants have the same genus diversity at the ages of 8, 11, and 14 years. The bacterial genus obtained can be used as PGPR (Plant Promoting Rhizobacteria).

scholarly journals Periplaneta americana Oligosaccharides Exert Anti-Inflammatory Activity through Immunoregulation and Modulation of Gut Microbiota in Acute Colitis Mice Model

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1718
Author(s):  
Kaimin Lu ◽  
Jing Zhou ◽  
Jie Deng ◽  
Yangjun Li ◽  
Chuanfang Wu ◽  
...  
Keyword(s):  
Side Effects ◽  
Pathogenic Bacteria ◽  
Periplaneta Americana ◽  
Biochemical Characterization ◽  
Antioxidant Activities ◽  
Inflammatory Activity ◽  
Mice Model ◽  
Acute Colitis ◽  
Anti Inflammatory

The incidence and prevalence of inflammatory bowel disorders (IBD) are increasing around the world due to bacterial infection, abnormal immune response, etc. The conventional medicines for IBD treatment possess serious side effects. Periplaneta americana (P. americana), a traditional Chinese medicine, has been used to treat arthritis, fever, aches, inflammation, and other diseases. This study aimed to evaluate the anti-inflammatory effects of oligosaccharides from P. Americana (OPA) and its possible mechanisms in vivo. OPA were purified and biochemical characterization was analyzed by HPGPC, HPLC, FT-IR, and GC–MS. Acute colitis mice model was established, the acute toxicity and anti-inflammatory activity were tested in vivo. The results showed OPA with molecular mass of 1.0 kDa were composed of 83% glucose, 6% galactose, 11% xylose, and the backbone was (1→4)-Glcp. OPA had potent antioxidant activities in vitro and significantly alleviated the clinical symptoms of colitis, relieved colon damage without toxic side effects in vivo. OPA exhibited anti-inflammatory activity by regulating Th1/Th2, reducing oxidative stress, preserving intestinal barrier integrity, and inhibiting TLR4/MAPK/NF-κB pathway. Moreover, OPA protected gut by increasing microbial diversity and beneficial bacteria, and reducing pathogenic bacteria in feces. OPA might be the candidate of complementary and alternative medicines of IBD with low-cost and high safety.

scholarly journals A microwave-catalyzed rapid, efficient and ecofriendly synthesis of substituted pyrazol-5-ones (Short communication)

2003 ◽  
Vol 68 (10) ◽  
pp. 723-727 ◽  
Author(s):  
Vijay Dabholkar ◽  
Rahul Gavande
Keyword(s):  
Acetic Acid ◽  
Carboxylic Acid ◽  
Microwave Irradiation ◽  
Reaction Rate ◽  
Short Communication ◽  
Acid Hydrazide ◽  
Acetoacetic Ester ◽  
Carboxylic Acid Hydrazide ◽  
Conventional Methods

A series of 1-(3,4-dihydro-3-oxo-2H-1,4-benzoxazine-2-carbonyl)-3-methyl-4-(substituted phenylhydrazono)-2-pyrazolin-5-ones have been synthesized by the reaction of 2H-3,4-dihydro-3-oxo-1,4-benzoxazine-2-carboxylic acid hydrazide with substituted acetoacetic ester derivatives using acetic acid as solvent under microwave irradiation (MWI), as well as by conventional methods. The reaction rate is enhanced tremendously and the yields are improved under MWI as compared to conventional methods.

scholarly journals Karakteristik Genus Bakteri Pada Karkas Ayam Broiler Dari Swalayan di Kota Pontianak

2018 ◽  
Vol 7 (3) ◽  
Author(s):  
Prianti Rahmawati Diah Wulandari Rousdy
Keyword(s):  
Broiler Chicken ◽  
Pathogenic Bacteria ◽  
Chicken Meat ◽  
Bacterial Isolates ◽  
Bacterial Genus ◽  
Chicken Carcass

The availability  of nutrients in chicken carcasses can cause chicken meat to be an excellent medium for the growth of pathogenic and non-pathogenic bacteria. This study aims to determine the characteristics of the bacterial genus in broiler chicken carcasses from supermarkets in Pontianak City. Based on the results of the study found 23 bacterial isolates in broiler chicken carcass samples from supermarkets in Pontianak City, which included members of the Aeromonas, Acetobacter, Alcaligenes, Amphibacillus, Bacillus, Brevibacterium, Camphylobacter, Carnobacterium, Erwinia,  Erysipelothrik, Eubacterium, Hafnia, Kluyvera, Klebsiella, Kurthia, Lactobacillus, Listeria, Proteus, Pseudomonas, Shigella, Sporolactobacillus, Serratia, and  Yersinia.

scholarly journals Prevalence of Tonsillitis caused by Streptococcus spp. Among children and the effect of some Lactic acid bacterial (LAB) strain on it

2016 ◽  
Vol 13 (2) ◽  
pp. 218-227
Author(s):  
Baghdad Science Journal
Keyword(s):  
Inhibitory Activity ◽  
Pathogenic Bacteria ◽  
Biochemical Characterization ◽  
Bacterial Isolate ◽  
Inhibition Zone ◽  
Laboratory Culture ◽  
Diffusion Method ◽  
Inhibition Activity ◽  
Str System

In this study 100 samples were collected from infected children with acute and chronic tonsillitis who attended to Al-Yarmook Teaching Hospital (ENT consultation clinic) from 5/12/2013 to 1/3/2014. The result of laboratory culture was positive in 67 samples. Depending on their cultural, morphological and biochemical characterization of bacterial isolate of them were identified as (37.31%) belonged to Streptococcus pyogenes and the diagnosis is confirmed by the use of Remel Rapid STR System, (34.32%) belonged to S.parasanguinis, (11.94%) S.mitis, (11.94%) S.oralis and (4.47%) S.thoraltensis . Results confirmed that cup assay gave highest inhibition zone after 24 hrs compare with well diffusion methods for suspension of L.acidophilus gave highest inhibition zone after 48 hrs for incubation, while ahigh inhibition zone revealed for suspension of L.fermentum after 24 hrs incubation. the study included also the measurement of the inhibition activity for bacteriocins produced by L.acidophilus bacteria against pathogenic bacteria on nutrient agar by well diffusion method in which results revealed stability of the bacteriocins produced towards PH which kept its activity with PH 4-6 for 24 hrs, and the highest stability was with PH 4, however it lost a lot of its activity with acidic PH less than 2 and alkaline PH as 8. The treatment of bacteriocins with salts such as Nacl it revealed little effect in inhibition zone within 1 & 2% concetrations. The salt MgSo4 & Kcl showed reduction in the inhibitory activity in the low concentration, however the higher concentration of salt caused great reduction and 5% concentration led to loss of inhibitory activity for bacteriocins completely.

Reducing Pathogens by Using Zinc Oxide Nanoparticles and Acetic Acid in Sheep Meat

2014 ◽  
Vol 77 (9) ◽  
pp. 1599-1604 ◽  
Author(s):  
MAHBOUBEH MIRHOSSEINI ◽  
VAHID ARJMAND
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Acetic Acid ◽  
Zno Nanoparticles ◽  
Pathogenic Bacteria ◽  
Inhibitory Effect ◽  
Initial Growth ◽  
Practical Applications ◽  
E Coli ◽  
Sheep Meat

Practical applications of different concentrations (0, 1, 2, 4, 6, and 8 mM) of zinc oxide (ZnO) suspensions containing 1% acetic acid were investigated against the pathogenic bacteria Listeria monocytogenes, Escherichia coli, Staphylococcus aureus, and Bacillus cereus. ZnO suspensions (0, 1, 3, 6, and 8 mM) containing acetic acid had a significant inhibitory effect on the growth of L. monocytogenes, E. coli, and S. aureus during 12 h of incubation, and the 8 mM suspensions of ZnO were the most effective against all the strains. These data suggested that the antibacterial activity of ZnO was concentration dependent. Thus, 6 and 8 mM ZnO were selected for further studies in meat. ZnO nanoparticles reduced initial growth of all inoculated strains in meat. To our knowledge, this is the first report describing the antibacterial activity of ZnO nanoparticles in meat and indicates the potential of these nanoparticles as an antibacterial agent in the food industry.

Plantlet formation from Lycopersicon esculentum leaf callus

1974 ◽  
Vol 52 (6) ◽  
pp. 1429-1432 ◽  
Author(s):  
Vasantha Padmanabhan ◽  
E. F. Paddock ◽  
W. R. Sharp
Keyword(s):  
Acetic Acid ◽  
Lycopersicon Esculentum ◽  
Shoot Formation ◽  
Growth Hormones ◽  
Root Initiation ◽  
Plantlet Formation ◽  
Callus Proliferation ◽  
Murashige And Skoog's Medium ◽  
Murashige And Skoog’S Medium ◽  
Indole 3 Acetic Acid

Explants were obtained from leaves of three strains of tomato and grown on a modified Murashige and Skoog's medium with various combinations of indole-3-acetic acid (IAA) and kinetin. Callus proliferation began by 8–10 days. Root initiation was very common, particularly at 2 mg/liter IAA and 2 mg/liter kinetin. Shoot formation occurred within 30 days but only at a specific combination of concentrations of the two growth hormones (4 mg/liter IAA + 4 mg/liter kinetin). Most shoots became plantlets by 10 days after transfer to basal Murashige and Skoog's medium. Shoot-forming potential was neither correlated with callus-forming potential nor with vigor of strain.

Indol-3-essigsäure induzierte Calciumionen- abgabe bei Maiskoleoptilzylindern / 3-Indol Acetic Acid Induced Efflux of Calciumions by Maize Coleoptile Sections

1973 ◽  
Vol 28 (11-12) ◽  
pp. 777-778 ◽  
Author(s):  
Boris Janistyn
Keyword(s):  
Acetic Acid ◽  
Maize Coleoptile ◽  
Indol Acetic Acid

Abstract 3-Indol acetic acid, calcium, adenosin-3':5'-monophosphat (c-AMP), maize coleoptile sections

Cloning and Characterization of a Novel N-acetylglucosaminidase (AtlD) from Enterococcus faecalis

2018 ◽  
Vol 28 (1) ◽  
pp. 14-27 ◽  
Author(s):  
Carlos Eduardo Serrano-Maldonado ◽  
Israel García-Cano ◽  
Augusto González-Canto ◽  
Eliel Ruiz-May ◽  
Jose Miguel Elizalde-Contreras ◽  
...  
Keyword(s):  
Enterococcus Faecalis ◽  
Food Industry ◽  
Pathogenic Bacteria ◽  
Heterologous Protein ◽  
Biochemical Characterization ◽  
Ph Values ◽  
Food Borne ◽  
Sds Page ◽  
Exclusion Chromatography

The <i>atlD</i> gene from<i></i> an <i>Enterococcus faecalis</i> strain isolated from a Mexican artisanal cheese was cloned, sequenced and expressed in <i>Escherichia coli</i> in order to perform a biochemical characterization<i>.</i> A partial amino acid sequence of the heterologous protein was obtained by LC-MS/MS, and it corresponded to a novel peptidoglycan hydrolase designated AtlD. Its molecular mass was 62–75 kDa, as determined by SDS-PAGE, zymography, Western blot, and exclusion chromatography. Electrofocusing rendered an isoelectric point (pI) of 4.8. It exhibited N-acetylglucosaminidase activity, with an optimal pH and temperature between 6–7 and 50°C, respectively. It retained 85% activity with NaCl at 1,000 mM, but it was susceptible to divalent ions, particularly Zn<sup>2+</sup>. It showed antibacterial activity against <i>Listeria monocytogenes</i>,<i> Staphylococcus aureus</i>, and enterococcal<i></i> strains of clinical origin. Due to the fact that it showed activity versus pathogenic bacteria, and because of its capabilities under ionic strength, temperature, and pH values present in food matrices, it could be applied as an additive in the food industry. This study will aid in the design of new antibacterial agents of natural origin to combat food-borne diseases, and it could be used as an industrial or hospital hygiene agent as well.

Growth and Aflatoxin Production by Aspergillus parasiticus in a Medium Containing Plant Hormones, Herbicides or Insecticides

1987 ◽  
Vol 50 (12) ◽  
pp. 1044-1047 ◽  
Author(s):  
R. S. FARAG ◽  
M. A. EL-LEITHY ◽  
A. E. BASYONY ◽  
Z. Y. DAW
Keyword(s):  
Acetic Acid ◽  
Gibberellic Acid ◽  
Plant Hormones ◽  
Aspergillus Parasiticus ◽  
Synthetic Medium ◽  
Fungal Growth ◽  
Aflatoxin Production ◽  
Inhibitory Effect ◽  
Indol Acetic Acid ◽  
Acid Herbicides

The effect of some widely used plant hormones (indol-3-acetic acid and gibberellic acid), herbicides (gramoxone, stomp and treflan) and insecticides (malathion, actellic and guthion) on Aspergillus parasiticus growth and aflatoxin production in a synthetic medium was studied. Addition of indol acetic acid to the medium increased aflatoxin production more than gibberellic acid. Treflan at 5, 10 and 20 ppm levels caused a highly significant stimulatory effect on A. parasiticus growth and aflatoxin production. In contrast, stomp at 10 and 20 ppm produced the reverse effect. Guthion, an insecticide, caused a marked decrease in fungal growth and aflatoxin production. The inhibitory effect of insecticides under study on both fungal growth and aflatoxin production in effectiveness followed the sequence: guthion&gt;actellic&gt;malathion. At the recommended application rate (10 ppm), with the exception of indol acetic acid and treflan, all compounds suppressed mold growth and aflatoxin production.

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