THE EFFECT OF SALMINE ON BACTERIA

1958 ◽  
Vol 4 (2) ◽  
pp. 65-71 ◽  
Author(s):  
Thomas D. Brock
Keyword(s):  
Sodium Chloride ◽  
Gram Negative Bacteria ◽  
Bacteriostatic Activity ◽  
Bactericidal Action ◽  
Gram Stain ◽  
Gram Positive ◽  
Gram Negative ◽  
Bacterial Surface ◽  
Bactericidal Effects

The bacteriostatic and bactericidal effects of salmine on various bacteria have been studied. Salmine has more bacteriostatic activity against Gram-positive than against Gram-negative bacteria. It is bactericidal in water but not in broth, and this bactericidal action occurs against both Gram-positive and Gram-negative bacteria. It has been shown that salmine causes agglutination of washed suspensions of certain bacteria and this agglutination is not correlated directly with the Gram stain. Salmine causes an increase in the turbidity of washed cells of all bacteria, Gram-positive and Gram-negative, and differs in this respect from the solutes sodium chloride and glucose, which affect only Gram-negative species.A comparison has been made of the effects of salmine and polymyxin and it has been concluded that salmine may also act by attachment to the bacterial surface.

scholarly journals Synergic bactericidal effects of reduced graphene oxide and silver nanoparticles against Gram-positive and Gram-negative bacteria

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Karthika Prasad ◽  
G. S. Lekshmi ◽  
Kola Ostrikov ◽  
Vanessa Lussini ◽  
James Blinco ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Reduced Graphene ◽  
Bactericidal Effects

scholarly journals POLA KUMAN BERDASARKAN PEWARNAAN GRAM PADA TINJA ANAK DENGAN DIARE DI RSUP PROF. DR. R. D. KANDOU MANADO

e-CliniC ◽  
2014 ◽  
Vol 2 (1) ◽  
Author(s):  
I Made Dwi Pramana
Keyword(s):  
Bacterial Infection ◽  
Microscopic Examination ◽  
Gram Negative Bacteria ◽  
Gram Stain ◽  
Gram Positive ◽  
Cross Sectional ◽  
Gram Negative ◽  
Consecutive Sampling ◽  
Gram Staining ◽  
In Infants And Children

Abstract: Background: Bacterial infection is one of the causes of diarrhea in infants and children. Bacteria are a group of microorganisms belongs to the prokaryotes which are structurally simpler than eukaryotics. There were many examinations used to detect the bacteria caused diarrhea, one of them was microscopic examination of the Gram stain smear. This technique is to determine whether the examination is Gram positive or Gram negative bacteria. Objective: This study aimed to determine the pattern of bacteria by Gram stain in children’s feces with diarrhea. Methods: This research used a descriptive designed with cross sectional approach by consecutive sampling from November to December 2013. There were 50 children in this study. Result: The results showed, 29 girls (58%) and 21 boys (42%). There were 34 children (68%) as the largest group that belongs to 1 - <3 years old. The results of feces microscopic examination showed 29 children (58%) got contaminated by bacteria. 23 children (46%) were contaminated with Gram positive and Gram negative bacteria. Gram negative Basil bacteria ware the most common bacteria that found in 23 preparations. Conclusion: Gram-negative bacilli germ were the most common germs that found in children’s feces with diarrhea and the numbers of diarrhea on November to December 2013 were increased. Key words: bacterial pattern, Gram staining, children, diarrhea  Abstrak: Latar belakang: Infeksi bakteri merupakan salah satu penyebab terjadinya diare pada bayi dan anak. Bakteri merupakan mikroorganisme yang termasuk dalam golongan prokariot yang strukturnya lebih sederhana dari eukariot. Banyak pemeriksaan yang dilakukan untuk mendeteksi bakteri penyebab diare, salah satunya dengan pemeriksaan mikroskopis pulasan yaitu pewarnaan Gram yang merupakan salah satu teknik pemeriksaan untuk menentukan apakah termasuk bakteri Gram positif atau bakteri Gram negatif. Tujuan penelitian: Penelitian ini bertujuan unutk mengetahui pola kuman berdasarkan pewarnaan Gram pada tinja anak dengan diare. Metode: Penelitian ini menggunakan desain penelitian deskriptif dengan pendekatan cross sectional yang dilakukan dengan cara consecutive sampling dari bulan November sampai Desember 2013. Sampel penelitian berjumlah 50 anak dan dilakukan pemeriksaan pewarnaan Gram. Hasil penelitian: Hasil penelitian didapatkan, perempuan 29 anak (58%) dan Laki-laki 21 anak (42%). Kelompok umur terbanyak 1 ─ <3 berjumlah 34 anak (64%). Hasil pemeriksaan mikroskopis feses ditemukan positif bakteri sebanyak 29 anak (58%). Bakteri Gram positif dan Gram negatif didapatkan berjumlah 23 anak (46%). Bakteri Basil Gram negatif merupakan bakteri terbanyak yang ditemukan yaitu 23 preparat. Kesimpulan: Kuman basil Gram negatif merupakan kuman terbanyak yang ditemukan pada tinja anak dengan diare dan terjadi peningkatan angka kejadian diare pada bulan November – Desember 2013. Kata kunci : pola kuman, pewarnaan Gram , anak, diare

scholarly journals Vancomycin conjugated iron oxide nanoparticles for magnetic targeting and efficient capture of Gram-positive and Gram-negative bacteria

RSC Advances ◽  
2021 ◽  
Vol 11 (57) ◽  
pp. 36319-36328
Author(s):  
Mehnaz Rashid ◽  
Md. Ahasanur Rabbi ◽  
Tabassum Ara ◽  
Md. Motahar Hossain ◽  
Md. Shahidul Islam ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Magnetic Targeting ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Bacterial Surface ◽  
Alanine Dipeptide

(a) The separation of bacteria by vancomycin conjugated Fe3O4/DOPA/Van nanoparticles and (b) H-bonding interactions between the vancomycin molecule and the d-alanyl-d-alanine dipeptide of the bacterial surface.

scholarly journals Chemical and bioactive characterization of the aromatic plant Levisticum officinale W.D.J. Koch: a comprehensive study

2020 ◽  
Vol 11 (2) ◽  
pp. 1292-1303 ◽  
Author(s):  
Rafael Mascoloti Spréa ◽  
Ângela Fernandes ◽  
Ricardo C. Calhelha ◽  
Carla Pereira ◽  
Tânia C. S. P. Pires ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Antioxidant Potential ◽  
Gram Negative Bacteria ◽  
Bacteriostatic Activity ◽  
Aromatic Plant ◽  
Gram Positive ◽  
Gram Negative ◽  
Comprehensive Study

Lovage is a source of nutrients, volatiles and bioactive compounds, and its extracts exhibit interesting antioxidant potential and bacteriostatic activity against several Gram-positive and Gram-negative bacteria.

scholarly journals THE BACTERICIDAL ACTION OF SYNTHETIC DETERGENTS

1941 ◽  
Vol 74 (6) ◽  
pp. 611-620 ◽  
Author(s):  
Zelma Baker ◽  
R. W. Harrison ◽  
Benjamin F. Miller ◽  
Keyword(s):  
Secondary Alcohol ◽  
Bactericidal Action ◽  
Gram Positive ◽  
Gram Negative ◽  
Bactericidal Effects ◽  
Cationic Detergents ◽  
Cationic Compounds ◽  
Anionic Detergents ◽  
Branched Chain ◽  
Gram Negative Organisms

1. The bactericidal action of a number of anionic and cationic synthetic detergents on four Gram-positive and three Gram-negative bacteria has been investigated. 2. Cationic detergents, as a group, were found to exhibit marked bactericidal effects on Gram-positive microorganisms and somewhat less pronounced action on Gram-negative organisms. 3. The anionic detergents were germicidal only against the Gram-positive organisms, and they were considerably less effective than the cationic compounds. Of the anionic detergents, the most active one was an alkyl sulfate derived from a branched-chain, secondary alcohol. 4. Correlations between bactericidal action and inhibition of bacterial metabolism, and also between bactericidal action and chemical structure of the detergents are discussed.

Towards the understanding of non-thermal air plasma action: effects on bacteria and fibroblasts

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25286-25292 ◽  
Author(s):  
Oleg Lunov ◽  
Vitalii Zablotskii ◽  
Olexander Churpita ◽  
Ales Jäger ◽  
Leoš Polívka ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Gram Negative Bacteria ◽  
Air Plasma ◽  
Gram Positive ◽  
Gram Negative ◽  
Action Effects ◽  
Bactericidal Effects ◽  
Bacteria Inactivation ◽  
Non Thermal Plasma ◽  
Plasma Research

Non-thermal plasma research has put a growing focus on the bacteria inactivation problem. Here we show how non-thermal plasma destroys Gram-positive and Gram-negative bacteria and discuss the mechanisms of plasma bactericidal effects.

scholarly journals Antimicrobial Activity of Inga fendleriana Extracts and Isolated Flavonoids

2009 ◽  
Vol 4 (12) ◽  
pp. 1934578X0900401 ◽  
Author(s):  
Luisa Pistelli ◽  
Alessandra Bertoli ◽  
Cecilia Noccioli ◽  
Jeanette Mendez ◽  
Rosa Anna Musmanno ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Staphylococcus Epidermidis ◽  
Kinetic Studies ◽  
Gram Negative Bacteria ◽  
Bacterial Strains ◽  
Gram Positive ◽  
Gram Negative ◽  
Bactericidal Effects ◽  
Time Kill

The EtOAc and n-BuOH extracts of Inga fendleriana inhibited Gram-positive, but not Gram-negative bacteria; a narrow spectrum of activity against Staphylococcus epidermidis was detected. The MIC values of the extracts ranged from 125 to 850 μg/mL. Quercetin 3-methylether, myricetin 3-O-rhamnoside and tricetin showed antibacterial activity against the same bacterial strains with MICs in the range from 31 to 250 μg/mL. In time-kill kinetic studies, the flavonoids showed bactericidal effects at the concentrations corresponding to four times the MICs.

Rapid demonstration of septic or infectious arthritis due to Gram-negative bacteria

1992 ◽  
Vol 50 (1) ◽  
pp. 686-687
Author(s):  
Jacob S. Hanker ◽  
Paul R. Gross ◽  
Beverly L. Giammara
Keyword(s):  
Chronic Arthritis ◽  
Blood Cultures ◽  
Gram Negative Bacteria ◽  
Infectious Arthritis ◽  
Bacterial Arthritis ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria

Blood cultures are positive in approximately only 50 per cent of the patients with nongonococcal bacterial infectious arthritis and about 20 per cent of those with gonococcal arthritis. But the concept that gram-negative bacteria could be involved even in chronic arthritis is well-supported. Gram stains are more definitive in staphylococcal arthritis caused by gram-positive bacteria than in bacterial arthritis due to gram-negative bacteria. In the latter situation where gram-negative bacilli are the problem, Gram stains are helpful for 50% of the patients; they are only helpful for 25% of the patients, however, where gram-negative gonococci are the problem. In arthritis due to gram-positive Staphylococci. Gramstained smears are positive for 75% of the patients.

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