21 research outputs found
Manganese and cobalt levels in hair and urine of RUDN University first-year students
The objective of the present study was to assess hair and urinary levels of cobalt (Co) and manganese (Mn) in foreign students of RUDN University in comparison to the Russian counterparts. A total of 272 first-year students of the RUDN University originating from Russia, Asia, Middle East, Africa, and Latin America were enrolled in the study. Evaluation of Mn and Co levels in urine and hair was performed using inductively-coupled plasma mass-spectrometry. The obtained data demonstrate that hair cobalt levels were found to be the highest in students originating from Russia and Africa. Similarly, urinary Co levels in subjects from Asia, Middle East, and Latin America were significantly lower than those in the Russian students. The patterns of manganese status were generally similar to those observed for cobalt. Particularly, the lowest hair Mn content was detected in subjects originating from Middle East. Manganese level in urine of students from Africa was significantly higher than that in subjects from Asia, Middle East, and Latin America, but not Russia. It is proposed that specific national dietary patterns as well as geochemistry of Mn and Co may underlie the observed differences
ΠΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ Π²Π·Π°ΠΈΠΌΠΎΡΠ²ΡΠ·ΠΈ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΠ°Π²Π° ΠΈ ΠΈΠΌΠΌΡΠ½Π½ΡΡ ΡΠ΅Π°ΠΊΡΠΈΠΉ Ρ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΠΈΡΠ΅Π»Π΅ΠΉ ΡΡΠ½ΠΎΠ΄Π΅ΠΌΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ Π³ΡΡΠΏΠΏ Π‘Π΅Π²Π΅ΡΠΎ-ΠΠΎΡΡΠΎΠΊΠ° Π ΠΎΡΡΠΈΠΈ
The content of some chemical elements that support immune responses (selenium, zinc, iron, iodine) was analyzed among representatives of the ethno-demographic groups of the North-East of Russia - natives (Chukchi, Koryaks, Evens), mestizos, and newcomers. A potential risk group for the development of hyposelenoses is the Koryak ethnic group. The minimum values of zinc were found among the Chukchi. In representatives of all ethno-demographic groups, the iron content was within the reference values, but its maximum values were noted in the newcomers. The maximum iodine levels are also characteristic of the newcomers. Comparable iodine content was noted in the Evens group. Features of the elemental status (selenium, zinc, iron, iodine) in the inhabitants of the north indicate that among the ethno-demographic groups, it is the aboriginal ethnic groups that are most predisposed to the development of immunodeficiency states.Π£ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΠΈΡΠ΅Π»Π΅ΠΉ ΡΡΠ½ΠΎΠ΄Π΅ΠΌΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π³ΡΡΠΏΠΏ Π‘Π΅Π²Π΅ΡΠΎ-ΠΠΎΡΡΠΎΠΊΠ° Π ΠΎΡΡΠΈΠΈ - Π°Π±ΠΎΡΠΈΠ³Π΅Π½ΠΎΠ² (ΡΡΠΊΡΠΈ, ΠΊΠΎΡΡΠΊΠΈ, ΡΠ²Π΅Π½Ρ), ΠΌΠ΅ΡΠΈΡΠΎΠ², ΠΏΡΠΈΡΠ»ΡΡ
ΠΆΠΈΡΠ΅Π»Π΅ΠΉ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ², ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΈΠ²Π°ΡΡΠΈΡ
ΠΈΠΌΠΌΡΠ½Π½ΡΠ΅ ΡΠ΅Π°ΠΊΡΠΈΠΈ (ΡΠ΅Π»Π΅Π½, ΡΠΈΠ½ΠΊ, ΠΆΠ΅Π»Π΅Π·ΠΎ, ΠΉΠΎΠ΄). ΠΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π³ΡΡΠΏΠΏΠΎΠΉ ΡΠΈΡΠΊΠ° ΠΏΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΡ Π³ΠΈΠΏΠΎΡΠ΅Π»Π΅Π½ΠΎΠ·ΠΎΠ² ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΊΠΎΡΡΠΊΡΠΊΠΈΠΉ ΡΡΠ½ΠΎΡ. ΠΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΡΠΈΠ½ΠΊΠ° Π²ΡΡΠ²Π»Π΅Π½Ρ Ρ ΡΡΠΊΡΠ΅ΠΉ. Π£ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΠΈΡΠ΅Π»Π΅ΠΉ Π²ΡΠ΅Ρ
ΡΡΠ½ΠΎΠ΄Π΅ΠΌΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π³ΡΡΠΏΠΏ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ ΠΆΠ΅Π»Π΅Π·Π° Π½Π°Ρ
ΠΎΠ΄ΠΈΠ»ΠΎΡΡ Π² ΠΏΡΠ΅Π΄Π΅Π»Π°Ρ
ΡΠ΅ΡΠ΅ΡΠ΅Π½ΡΠ½ΡΡ
Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ, Π½ΠΎ Π΅Π³ΠΎ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΎΡΠΌΠ΅ΡΠ΅Π½Ρ Ρ ΠΏΡΠΈΡΠ»ΡΡ
ΠΆΠΈΡΠ΅Π»Π΅ΠΉ, ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΉΠΎΠ΄Π° ΡΠ°ΠΊΠΆΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½Ρ Π΄Π»Ρ ΠΏΡΠΈΡΠ»ΡΡ
ΠΆΠΈΡΠ΅Π»Π΅ΠΉ. Π‘ΠΎΠΏΠΎΡΡΠ°Π²ΠΈΠΌΠΎΠ΅ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ ΠΉΠΎΠ΄Π° ΠΎΡΠΌΠ΅ΡΠ΅Π½ΠΎ Π² Π³ΡΡΠΏΠΏΠ΅ ΡΠ²Π΅Π½ΠΎΠ². ΠΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ ΡΡΠ°ΡΡΡΠ° (ΡΠ΅Π»Π΅Π½, ΡΠΈΠ½ΠΊ, ΠΆΠ΅Π»Π΅Π·ΠΎ, ΠΉΠΎΠ΄) Ρ ΠΆΠΈΡΠ΅Π»Π΅ΠΉ Π‘Π΅Π²Π΅ΡΠ° ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΡΡ, ΡΡΠΎ ΡΡΠ΅Π΄ΠΈ ΡΡΠ½ΠΎΠ΄Π΅ΠΌΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π³ΡΡΠΏΠΏ ΠΈΠΌΠ΅Π½Π½ΠΎ Π°Π±ΠΎΡΠΈΠ³Π΅Π½Π½ΡΠ΅ ΡΡΠ½ΠΎΡΡ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΠΏΡΠ΅Π΄ΡΠ°ΡΠΏΠΎΠ»ΠΎΠΆΠ΅Π½Ρ ΠΊ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΈΠΌΠΌΡΠ½ΠΎΠ΄Π΅ΡΠΈΡΠΈΡΠ½ΡΡ
ΡΠΎΡΡΠΎΡΠ½ΠΈΠΉ
ΠΠΈΠΎΡΠ΅ΠΌΠ΅Π΄ΠΈΠ°ΡΠΈΡ Π·Π°Π³ΡΡΠ·Π½Π΅Π½Π½ΡΡ ΠΏΠΎΡΠ² ΠΏΠ΅ΡΡΠΈΡΠΈΠ΄Π°ΠΌΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠΈΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠΎΠ² - ΡΠΈΡΡΠ°ΡΠΈΡ Π² ΠΠΎΠ»ΡΠΌΠ±ΠΈΠΈ
The analysis of the scientific literature on the subject of bioremediation in Latin America countries shows that due to the excessive and uncontrolled use of pesticides in agriculture, there are negative impacts on the environment, mainly on soil and water, as well as on human health. However, through processes such as bioremediation, which utilize the metabolic potential of microorganisms such as bacteria and fungi, it is possible to reduce the impact of pesticides on the environment and human health, which are key factors for achieving sustainable development. Colombia has a severe pesticide pollution problem, as the uncontrolled use of pesticides has affected not only the environment but also human health. Thus, bioremediation is a good alternative to the restoration of a polluted environment and the reduction of its impact on human health.ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· Π½Π°ΡΡΠ½ΠΎΠΉ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΡ ΠΏΠΎ ΡΠ΅ΠΌΠ°ΡΠΈΠΊΠ΅ Π±ΠΈΠΎΡΠ΅ΠΌΠΈΠ΄ΠΈΠ°ΡΠΈΠΈ Π² ΡΡΡΠ°Π½Π°Ρ
ΠΠ°ΡΠΈΠ½ΡΠΊΠΎΠΉ ΠΠΌΠ΅ΡΠΈΠΊΠΈ ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΠ΅Ρ, ΡΡΠΎ ΠΈΠ·-Π·Π° ΡΡΠ΅Π·ΠΌΠ΅ΡΠ½ΠΎΠ³ΠΎ ΠΈ Π±Π΅ΡΠΊΠΎΠ½ΡΡΠΎΠ»ΡΠ½ΠΎΠ³ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠ΅ΡΡΠΈΡΠΈΠ΄ΠΎΠ² Π² ΡΠ΅Π»ΡΡΠΊΠΎΠΌ Ρ
ΠΎΠ·ΡΠΉΡΡΠ²Π΅ Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡ Π½Π΅Π³Π°ΡΠΈΠ²Π½ΡΠ΅ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π½Π° ΠΎΠΊΡΡΠΆΠ°ΡΡΡΡ ΡΡΠ΅Π΄Ρ, Π² ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠΌ Π½Π° ΠΏΠΎΡΠ²Ρ ΠΈ Π²ΠΎΠ΄Ρ, Π° ΡΠ°ΠΊΠΆΠ΅ Π½Π° Π·Π΄ΠΎΡΠΎΠ²ΡΠ΅ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°. ΠΠΎ Π±Π»Π°Π³ΠΎΠ΄Π°ΡΡ ΡΠ°ΠΊΠΈΠΌ ΠΏΡΠΎΡΠ΅ΡΡΠ°ΠΌ, ΠΊΠ°ΠΊ Π±ΠΈΠΎΡΠ΅ΠΌΠ΅Π΄ΠΈΠ°ΡΠΈΡ, Π² ΠΊΠΎΡΠΎΡΡΡ
ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΡΡΡ ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π» ΠΌΠΈΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠΎΠ², ΡΠ°ΠΊΠΈΡ
ΠΊΠ°ΠΊ Π±Π°ΠΊΡΠ΅ΡΠΈΠΈ ΠΈ Π³ΡΠΈΠ±Ρ, ΠΌΠΎΠΆΠ½ΠΎ ΡΠΌΠ΅Π½ΡΡΠΈΡΡ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ ΠΏΠ΅ΡΡΠΈΡΠΈΠ΄ΠΎΠ² Π½Π° ΠΎΠΊΡΡΠΆΠ°ΡΡΡΡ ΡΡΠ΅Π΄Ρ ΠΈ Π·Π΄ΠΎΡΠΎΠ²ΡΠ΅ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°, ΡΡΠΎ ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΎΠ΄Π½ΠΈΠΌ ΠΈΠ· ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
ΡΠ°ΠΊΡΠΎΡΠΎΠ² Π΄Π»Ρ Π΄ΠΎΡΡΠΈΠΆΠ΅Π½ΠΈΡ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΠ³ΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΡ. Π ΠΠΎΠ»ΡΠΌΠ±ΠΈΠΈ ΡΡΡΠ΅ΡΡΠ²ΡΠ΅Ρ ΡΠ΅ΡΡΠ΅Π·Π½Π°Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ°, ΡΠ²ΡΠ·Π°Π½Π½Π°Ρ Ρ Π·Π°Π³ΡΡΠ·Π½Π΅Π½ΠΈΠ΅ΠΌ ΠΏΠ΅ΡΡΠΈΡΠΈΠ΄Π°ΠΌΠΈ, ΠΏΠΎΡΠΊΠΎΠ»ΡΠΊΡ Π½Π΅ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΠΌΠΎΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠ΅ΡΡΠΈΡΠΈΠ΄ΠΎΠ² ΠΏΠΎΠ²Π»ΠΈΡΠ»ΠΎ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ Π½Π° ΠΎΠΊΡΡΠΆΠ°ΡΡΡΡ ΡΡΠ΅Π΄Ρ, Π½ΠΎ ΠΈ Π½Π° Π·Π΄ΠΎΡΠΎΠ²ΡΠ΅ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°. Π’Π°ΠΊΠΈΠΌ ΠΎΠ±ΡΠ°Π·ΠΎΠΌ, Π±ΠΈΠΎΡΠ΅ΠΌΠ΅Π΄ΠΈΠ°ΡΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ Ρ
ΠΎΡΠΎΡΠ΅ΠΉ Π°Π»ΡΡΠ΅ΡΠ½Π°ΡΠΈΠ²ΠΎΠΉ Π²ΠΎΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΡ Π·Π°Π³ΡΡΠ·Π½Π΅Π½Π½ΠΎΠΉ ΠΎΠΊΡΡΠΆΠ°ΡΡΠ΅ΠΉ ΡΡΠ΅Π΄Ρ ΠΈ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΡ Π΅Π΅ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π½Π° Π·Π΄ΠΎΡΠΎΠ²ΡΠ΅ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°
Biologically Active Supplements Affecting Producer Microorganisms in Food Biotechnology: A Review
Microorganisms, fermentation processes, and the resultant metabolic products are a key driving force in biotechnology and, in particular, in food biotechnology. The quantity and/or quality of final manufactured food products are directly related to the efficiency of the metabolic processes of producer microorganisms. Food BioTech companies are naturally interested in increasing the productivity of their biotechnological production lines. This could be achieved via either indirect or direct influence on the fundamental mechanisms governing biological processes occurring in microbial cells. This review considers an approach to improve the efficiency of producer microorganisms through the use of several types of substances or complexes affecting the metabolic processes of microbial producers that are of interest for food biotechnology, particularly fermented milk products. A classification of these supplements will be given, depending on their chemical nature (poly- and oligosaccharides; poly- and oligopeptides, individual amino acids; miscellaneous substances, including vitamins and other organic compounds, minerals, and multicomponent supplements), and the approved results of their application will be comprehensively surveyed
Biologically Active Supplements Affecting Producer Microorganisms in Food Biotechnology: A Review
Microorganisms, fermentation processes, and the resultant metabolic products are a key driving force in biotechnology and, in particular, in food biotechnology. The quantity and/or quality of final manufactured food products are directly related to the efficiency of the metabolic processes of producer microorganisms. Food BioTech companies are naturally interested in increasing the productivity of their biotechnological production lines. This could be achieved via either indirect or direct influence on the fundamental mechanisms governing biological processes occurring in microbial cells. This review considers an approach to improve the efficiency of producer microorganisms through the use of several types of substances or complexes affecting the metabolic processes of microbial producers that are of interest for food biotechnology, particularly fermented milk products. A classification of these supplements will be given, depending on their chemical nature (poly- and oligosaccharides; poly- and oligopeptides, individual amino acids; miscellaneous substances, including vitamins and other organic compounds, minerals, and multicomponent supplements), and the approved results of their application will be comprehensively surveyed
Novel Highly Efficient Antibacterial Chitosan-Based Films
In this study, we elaborated new chitosan-based films reinforced by iron(III)-containing chitosan nanoparticles Fe(III)-CS-NPs at different concentrations. We found that the optimum concentration of Fe(III)-CS-NPs for the improvement of antibacterial and mechanical properties of the films was 10% (Οb = ca. 8.8 N/mm2, Ξ΅b = ca. 41%, inhibition zone for S. aureus = ca. 16.8 mm and for E. coli = ca. 11.2 mm). Also, using the click-chemistry approach (thiolβene reaction), we have synthesized a novel water-soluble cationic derivative of chitin. The addition of this derivative of chitin to the chitosan polymer matrix of the elaborated film significantly improved its mechanical (Οb = ca. 11.6 N/mm2, Ξ΅b = ca. 75%) and antimicrobial (inhibition zone for S. aureus = ca. 19.6 mm and for E. coli = ca. 14.2 mm) properties. The key mechanism of the antibacterial action of the obtained films is the disruption of the membranes of bacterial cells. The elaborated antibacterial films are of interest for potential biomedical and food applications
Aurophilic Interactions in Cationic Three-Coordinate Gold(I) Bipyridyl/Isocyanide Complex
Gold(I) isocyanide complexes featuring Au···Au interactions attract considerable attention because of their tunable photophysical properties. Although the synthetic exploration of isocyanide gold(I) complexes seems reasonable, their structural diversity is mainly limited to linear gold(I) derivatives. The synthesis and structural characterization of cationic three-coordinate gold(I) mixed 2,2′-bipyridyl/isocyanide complex are presented here for the first time. Cationic gold species form supramolecular dimers in the solid state via attractive Au···Au interactions. The nature and energies of aurophilic contacts, which are responsible for dimerization in the solid state, were studied by DFT calculations together with QTAIM, ELF, RDG, and NCI techniques and Hirshfeld surface analysis. The estimated energy of the aurophilic interactions was 6.3 kcal/mol
Benzothiazole Derivatives of Chitosan and Their Derived Nanoparticles: Synthesis and In Vitro and In Vivo Antibacterial Effects
In this work, we focused on synthesizing and assessing novel chitosan-based antibacterial polymers and their nanoparticles by incorporating benzothiazole substituents. The growing resistance to antibiotics has necessitated the search for alternative antimicrobial compounds. This study aimed to synthesize and evaluate chitosan-based polymers and nanoparticles with benzothiazole substituents for their antibacterial properties and toxicity. The benzothiazole derivatives of chitosan and their nanoparticles were synthesized through electrochemical coupling. The in vivo antibacterial efficacy was tested on white rats with induced peritonitis using a microbial suspension containing S. aureus and E. coli. Additionally, in vitro and in vivo toxicity assessments were conducted. The chitosan-based antibacterial systems showed significant in vivo antibacterial activity, surpassing that of unmodified chitosan and commercial antibiotics. Moreover, the toxicity studies revealed low toxicity levels of the synthesized derivatives, which did not differ significantly from native chitosan. The synthesized chitosan-based polymers and nanoparticles demonstrated potent antibacterial activity and low toxicity, highlighting their potential as effective alternatives to traditional antibiotics. Further investigations in pharmacology and preclinical trials are recommended to explore their application in clinical settings
Triarylazoimidazole-ZnII, CdII, and HgII Complexes: Structures, Photophysics, and Antibacterial Properties
Novel triarylazoimidazoles containing strong electron donors (p-NEt2) or acceptors (p-NO2) by the azoaryl group, and their group 12 metal complexes were synthesized and fully characterized, including X-ray analysis for several complexes. Novel complexes exhibit red photo-luminescence emission (Φ up to  0.21) in a solution. Moreover, the antibacterial activity of complexes was tested against Gram-positive microorganism S. aureus and Gram-negative microorganism E. coli
Triarylazoimidazole-Zn<sup>II</sup>, Cd<sup>II</sup>, and Hg<sup>II</sup> Complexes: Structures, Photophysics, and Antibacterial Properties
Novel triarylazoimidazoles containing strong electron donors (p-NEt2) or acceptors (p-NO2) by the azoaryl group, and their group 12 metal complexes were synthesized and fully characterized, including X-ray analysis for several complexes. Novel complexes exhibit red photo-luminescence emission (Ξ¦ up to β0.21) in a solution. Moreover, the antibacterial activity of complexes was tested against Gram-positive microorganism S. aureus and Gram-negative microorganism E. coli