ascorbic-acid and Dysentery--Bacillary

Topics: Animals; Ascorbic Acid; Disease Models, Animal; Dysentery, Bacillary; Gastrointestinal Microbiome; Guinea Pigs; Humans; Mammals; Mice; Rabbits; Shigella; Shigella flexneri

Synthesis of silver nanoparticles using leaf extract of Hibiscus cannabinus has been investigated. The influences of different concentration of H. cannabinus leaf extract, different metal ion concentration and different reaction time on the above cases on the synthesis of nanoparticles were evaluated. The synthesized nanoparticles were characterized using UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM). The prepared silver nanoparticles were monodispersed, spherical in shape with the average particle size of 9 nm and shows surface plasmon peak at 446 nm. The study also reveals that the ascorbic acid present in H. cannabinus leaf extract has been used as reducing agent. The prepared silver nanoparticle shows good antimicrobial activity against Escherichia coli, Proteus mirabilis and Shigella flexneri.

Topics: Anti-Infective Agents; Ascorbic Acid; Dysentery, Bacillary; Escherichia coli; Escherichia coli Infections; Hibiscus; Humans; Nanoparticles; Oxidation-Reduction; Plant Extracts; Plant Leaves; Proteus Infections; Proteus mirabilis; Shigella flexneri; Silver; Spectrum Analysis

To study the bactericidal properties of the lactoperoxidase (LPER)-thiocyanate and soybean peroxidase (SBP)-thiocyanate systems at low pH, their efficiency for inactivation of Escherichia coli and Shigella in acidic fruit and vegetable juices, their effect on colour stability of the juices and interaction with ascorbic acid.. Three-strain cocktails of E. coli and Shigella spp. in selected juices were supplemented with the LPER or SBP system. Within 24 h at 20 degrees C, the LPER system inactivated both cocktails by > or = 5 log10 units in apple, 2-5 log10 units in orange and < or = 1 log10 unit in tomato juices. In the presence of SBP, browning was significant in apple juice and white grape juice, slight in pink grape juice and absent in orange or tomato juice. Ascorbic acid protected E. coli and Shigella against inactivation by the LPER system, and peroxidase systems significantly reduced the ascorbic acid content of juices.. Our results suggest a different specificity of LPER and SBP for SCN-, phenolic substrates of browning and ascorbic acid in acidic juices. The LPER system appeared a more appropriate candidate than the SBP system for biopreservation of juices.. This work may open perspectives towards the development of LPER or other peroxidases as biopreservatives in acidic foods.

Topics: Ascorbic Acid; Beverages; Color; Dysentery, Bacillary; Escherichia coli; Food Preservation; Food Preservatives; Fruit; Microbial Sensitivity Tests; Peroxidases; Shigella; Thiocyanates; Vegetables

Topics: Agglutination Tests; Animals; Ascorbic Acid; Ascorbic Acid Deficiency; Blood Sedimentation; Body Weight; Colon; Diet; Dysentery, Bacillary; Erythrocyte Count; Fluorescent Antibody Technique; Haplorhini; Hematocrit; Leukocyte Count; Shigella; Shigella dysenteriae

Topics: Adrenal Glands; Animals; Ascorbic Acid; Dysentery, Bacillary; Haplorhini; Liver; Pneumonia, Pneumococcal; Shigella dysenteriae

Topics: Anti-Bacterial Agents; Antitubercular Agents; Ascorbic Acid; Bacteria; Cholera; Dapsone; Dysentery, Bacillary; Female; Heterocyclic Compounds; Humans; Leprosy; Meningitis; Meningitis, Haemophilus; Methods; Otorhinolaryngologic Diseases; Pregnancy; Puerperal Infection; Scarlet Fever; Sulfathiazoles; Sulfones; Tuberculosis, Meningeal; Tuberculosis, Pulmonary; Urinary Tract Infections; Vitamin K

Topics: Adolescent; Adult; Ascorbic Acid; Ceruloplasmin; Copper; Dysentery, Bacillary; Hepatitis A; Humans; Middle Aged; Typhoid Fever

Topics: Ascorbic Acid; Biological Phenomena; Culture Media; Dysentery, Bacillary; Niacin; Nicotinic Acids; Physiological Phenomena; Research; Shigella dysenteriae

Topics: Ascorbic Acid; Bacillus; Dysentery; Dysentery, Bacillary; Humans; Vitamins

Topics: Ascorbic Acid; Bacillus; Communicable Diseases; Dysentery; Dysentery, Bacillary; Gram-Positive Bacteria; Guinea Pigs; Parasitic Diseases; Shigella dysenteriae

Topics: Ascorbic Acid; Bacillus; Dysentery; Dysentery, Bacillary; Humans; Lacticaseibacillus casei; Vitamins

Topics: Ascorbic Acid; Bacillus; Dysentery; Dysentery, Bacillary; Vitamins

Topics: Ascorbic Acid; Bacillus; Communicable Diseases; Dysentery; Dysentery, Bacillary; Guinea Pigs; Parasitic Diseases; Shigella dysenteriae