scholarly journals Natural bioactive compounds and antimicrobial potential of Pavetta indica L.

2021 ◽  
Vol 10 (4) ◽  
pp. 161-164
Author(s):  
Gobalakrishnan R ◽  
Bhuvaneswari R
Keyword(s):  
Antimicrobial Activity ◽  
Bioactive Compounds ◽  
Antimicrobial Agents ◽  
Soluble Sugars ◽  
Pharmaceutical Research ◽  
Ethanolic Extract ◽  
Soluble Starch ◽  
Terrestrial Plants ◽  
Antimicrobial Potential ◽  
Wide Range

Terrestrial plants have opened up a new perspective for pharmaceutical research and development of novel antimicrobial agents for the treatment of microbial diseases. Therefore, it is necessary to start an urgent need to screen the plants for novel bioactive compounds. In this context, present study was carried out to screen phytochemical constituents from leaves of Pavetta indica L., and its antimicrobial potential. P. indica leaves possess Chlorophyll a (1.21 ±0.05 mg g-1), Chlorophyll b (1.61 ±0.09 mg g-1), total chlorophyll (2.82 ±0.13 mg g-1), carotenoids (0.57 ±0.06 mg g-1), total soluble sugars (30.08 ±0.79 mg g-1), total soluble starch (13.54 ± 0.72), total soluble proteins (47.81 ± 2.82 mg g-1), total free amino acids (5.77 ± 0.69 mg g-1), total phenol (7.67 ± 0.72 mg g-1), hydroxyl phenols (5.74 ± 0.29 mg g-1) and lipids (53.53 ± 2.50 mg g-1) while alkaloids, tannins, steroids, phenolic compounds, saponins, triterpenoids and cardiac glycosides were also present in the leaves of P. indica. Absolute ethanolic extract of P. indica showed significant antimicrobial activity against all the tested pathogens, followed by aqueous extract. In concluded that, P. indica leaves crude extracts have wide range of bioactive compounds and which might be led to potential antimicrobial activity. They may lend to developing novel therapeutic agent to different infectious diseases.

scholarly journals Antimicrobial Activity of Leaves and Flowers of Cassia auriculata linn

1970 ◽  
Vol 46 (4) ◽  
pp. 513-518 ◽  
Author(s):  
V Subhadradevi ◽  
K Asokkumar ◽  
M Umamaheswari ◽  
AT Sivashanmugam ◽  
JR Ushanandhini ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antimicrobial Agents ◽  
Inhibitory Concentration ◽  
Dominant Role ◽  
Ethanolic Extract ◽  
Diffusion Method ◽  
Cassia Auriculata ◽  
Potential Source ◽  
Wide Range ◽  
Ancient Times

Since ancient times plant as sources of medicinal compounds have continued to play a dominant role in the maintenance of human health. To treat chronic and infectious diseases plants used in traditional medicine contain a wide range of ingredients. In this regard, Cassia auriculata L. (Caesalpiniaceae) is widely used in Ayurvedic medicine as a tonic, astringent and as a remedy for diabetes, conjunctivitis, ulcers, leprosy, skin and liver diseases. The aim of present study was to evaluate the antimicrobial activity of ethanolic extract of Cassia auriculata leaves and flowers (CALE & CAFE). CALE and CAFE exhibited broad spectrum antimicrobial activity against standard strains of Staphylococcus aureus, Escherichia coli and Bacillus subtilis and exhibited no antifungal activity against standard strains of Candida albicans and Aspergillus niger. Minimum inhibitory concentration (MIC) and Minimum bactericidal concentration (MBC) was carried out for CALE and CAFE. The results obtained in the present study indicate that the CALE and CAFE can be a potential source of natural antimicrobial agents. Key words: Cassia auriculata; Antimicrobial activity; Agar well diffusion method. DOI: http://dx.doi.org/10.3329/bjsir.v46i4.9600 BJSIR 2011; 46(4): 513-518

scholarly journals Efficacy and Mechanism of Traditional Medicinal Plants and Bioactive Compounds against Clinically Important Pathogens

Antibiotics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 257 ◽  
Author(s):  
Mickymaray
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Bioactive Compounds ◽  
Antimicrobial Agents ◽  
Antimicrobial Activities ◽  
Pharmacological Agents ◽  
Antibiotic Resistant ◽  
Diverse Range ◽  
Traditional Medicinal Plants ◽  
Wide Range

Traditional medicinal plants have been cultivated to treat various human illnesses and avert numerous infectious diseases. They display an extensive range of beneficial pharmacological and health effects for humans. These plants generally synthesize a diverse range of bioactive compounds which have been established to be potent antimicrobial agents against a wide range of pathogenic organisms. Various research studies have demonstrated the antimicrobial activity of traditional plants scientifically or experimentally measured with reports on pathogenic microorganisms resistant to antimicrobials. The antimicrobial activity of medicinal plants or their bioactive compounds arising from several functional activities may be capable of inhibiting virulence factors as well as targeting microbial cells. Some bioactive compounds derived from traditional plants manifest the ability to reverse antibiotic resistance and improve synergetic action with current antibiotic agents. Therefore, the advancement of bioactive-based pharmacological agents can be an auspicious method for treating antibiotic-resistant infections. This review considers the functional and molecular roles of medicinal plants and their bioactive compounds, focusing typically on their antimicrobial activities against clinically important pathogens.

Antioxidant and Antimicrobial Activities of the Fresh aerial parts of Ammi visnaga L. from Algeria

2016 ◽  
Vol 6 (2) ◽  
pp. 70-76
Author(s):  
Soumia Keddari ◽  
Narimen Benaoum ◽  
Yasmina Mokhtaria Boufadi ◽  
Mansouria Belhocine ◽  
Ali Riazi
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Phenolic Compounds ◽  
Biological Activities ◽  
Antibacterial Properties ◽  
Ethanolic Extract ◽  
Diffusion Method ◽  
E Coli ◽  
Ammi Visnaga ◽  
Wide Range

Medicinal plants have been used for countries as cures for human diseases because they contain components of therapeutic value. Among these medi-cinal plants, Ammi visnage which have an immense reservoir of potential compounds attributed to the secondary metabolites which have the advan-tage of being of great diversity of chemical structure and have a very wide range of biological activities. The objectives of the present work were to stu-dy the antioxidant and antimicrobial activity of phenolic compounds ex-tracted from A. visnaga L. Its extraction is performed by two methods, etha-nol extraction and water extraction. The results showed that A. visnaga L.. ethanolic extract contains a mixture of phytochemical classes as polyphenol, flavonoids and revealed that this plant has high antioxidant activity (IC50 0.069 mg/ml). Regarding the antimicrobial activity results expressed by the diameter of the inhibition zones by diffusion method AWDT, the most signifi-cant inhibition was observed against to Staphylococcus aureus (12 mm) to the ethanol extract at concentration of 100mg / ml. Thus the aqueous ex-tract had a significant inhibitory activity against on the strains Staphylococ-cus aureus (8 mm), E. coli ATCC 10536 (8 mm) to a concentration of 100 mg / ml. The results for the antibacterial properties have shown that Gram-positive bacteria (Staphylococcus aureus, Listeria monocytogenes and M. luteus.) were more sensitive than gram-negative (Pseudomonas aeruginosa, E. coli ATCC 10536) against from the action of phenolic compounds of the Ammi visnaga ethanolic extract.

scholarly journals Nutritional Characteristics and Antimicrobial Activity of Australian Grown Feijoa (Acca sellowiana)

Foods ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 376 ◽  
Author(s):  
Anh Dao Thi Phan ◽  
Mridusmita Chaliha ◽  
Yasmina Sultanbawa ◽  
Michael E. Netzel
Keyword(s):  
Antimicrobial Activity ◽  
Vitamin C ◽  
Bioactive Compounds ◽  
Pantothenic Acid ◽  
Biological Properties ◽  
Natural Food ◽  
Fruit Peel ◽  
Wide Range ◽  
Nutritional Characteristics ◽  
Acca Sellowiana

The present study determined the chemical composition, bioactive compounds and biological properties of Australian grown feijoa (Acca sellowiana), including whole fruit with peel, fruit peel and pulp, in order to assess the nutritional quality and antimicrobial activity of this emerging subtropical fruit. Polyphenolic compounds and vitamins were determined by UHPLC-PDA-MS/MS, showing that the feijoa fruit not only contains high amounts of antioxidant flavonoids, but is also a valuable source of vitamin C (63 mg/100 g FW (fresh weight)) and pantothenic acid (0.2 mg/100 g FW). Feijoa fruit is also a good source of dietary fibre (6.8 g/100 g FW) and potassium (255 mg/100 g FW). The edible fruit peel possesses significantly (p < 0.05) higher amounts of antioxidant flavonoids and vitamin C than the fruit pulp. This is most likely the reason for the observed strong antimicrobial activity of the peel-extracts against a wide-range of food-spoilage microorganism. The consumption of feijoa fruit can deliver a considerable amount of bioactive compounds such as vitamin C, flavonoids and fibre, and therefore, may contribute to a healthy diet. Furthermore, the potential use of feijoa-peel as a natural food perseverative needs to be investigated in follow-up studies.

scholarly journals Nutritional Characteristics of Australian Grown Feijoa (Acca sellowiana) and Its Antimicrobial Activity

Proceedings ◽  
2020 ◽  
Vol 36 (1) ◽  
pp. 100
Author(s):  
Anh Dao Thi Phan ◽  
Mridusmita Chaliha ◽  
Rohan Bicknel ◽  
Yasmina Sultanbawa ◽  
Michael E. Netzel
Keyword(s):  
Antimicrobial Activity ◽  
Vitamin C ◽  
Bioactive Compounds ◽  
Food Poisoning ◽  
Biological Properties ◽  
Natural Food ◽  
Fruit Peel ◽  
Tropical Fruit ◽  
Wide Range ◽  
Acca Sellowiana

The present study determined the chemical composition, bioactive compounds and biological properties of Australian grown feijoa (Acca sellowiana) (including whole fruit with peel, fruit peel and pulp) in order to assess the nutritional quality and antimicrobial activity of this tropical fruit. Polyphenolic compounds and vitamins were determined by UHPLC-PDA-MS/MS, showing that the feijoa fruit not only contains a high amount of antioxidant flavonoids, but is also a rich source of vitamin C (63 mg/100 g FW in the whole fruit and 95 mg/100 g FW in the peel; Recommended Dietary Intake (RDI) for adults: 45 mg/day). The proximate, essential minerals and selected trace elements indicate that feijoa fruit is a valuable source of dietary fibre and potassium. The edible fruit peel possesses significantly more antioxidant flavonoids and vitamin C than the fruit pulp. This is most probably the reason for the observed strong antimicrobial activity of feijoa peel-extracts against a wide-range of microorganism responsible for food spoilage and food poisoning. The consumption of feijoa, whole fruit with peel, can deliver a considerable amount of bioactive compounds such as vitamin C, flavonoids and fibre, and therefore, may contribute to a healthy diet. Furthermore, the potential use of feijoa-peel as a natural food perseverative needs to be investigated in follow-up studies.

Elaeocarpus floribundus Bl. seeds as a new source of bioactive compounds with promising antioxidant and antimicrobial properties

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ayorinde V. Ogundele ◽  
Saikat Haldar ◽  
Archana Yadav ◽  
Archana M. Das
Keyword(s):  
Bioactive Compounds ◽  
Antioxidant Activities ◽  
Antimicrobial Properties ◽  
Ethanolic Extract ◽  
Ethyl Acetate Fraction ◽  
Antimicrobial Activities ◽  
Free Radical Scavenger ◽  
Radical Scavenger ◽  
Medicinal Uses ◽  
Wide Range

AbstractThe fruits of Elaeocarpus floribundus Bl. (Elaeocarpaceae) are edible and are normally prescribed for treatment of diseases. The medicinal uses of the fruit create considerable quantities of seeds as wastes. In an attempt to valorise this biomass, we studied the antimicrobial and antioxidant activities of the ethanolic seed extract. The extract inhibited the growth of the tested pathogens and was also a very strong scavenger of DPPH free radicals. Consequently, the extract was phytochemically investigated and this study reports the initial isolation of five phenolic compounds from this source. The structures of the isolated compounds were elucidated by spectra analyses including HR-ESI-MS, 1D and 2D NMR experiments. The isolated compounds exhibited a wide range of antimicrobial activities against the tested pathogens. Gallic acid (4) showed the most activity against Bacillus subtilis with a minimum inhibitory concentration (MIC) value of 30 µg/mL, while the MIC values of the antimicrobial standards range between 10 and 35 µg/mL. Compound 4, crude ethanolic extract, and the ethyl acetate fraction were more a potent free radical scavenger of DPPH compared to ascorbic acid. Hence, the seeds of E. floribundus could be considered as a new source of bioactive compounds for pharmaceutical and food-related industries.

scholarly journals IN VITRO SCREENING OF ANTIMICROBIAL ACTIVITY OF ETHANOLIC EXTRACT OBTAINED FROM FICUS LYRATA WARB. (MORACEAE) LEAVES

2016 ◽  
Author(s):  
H. Tkachenko ◽  
L. Buyun ◽  
Z. Osadovskyy ◽  
M. Truhan ◽  
Ye. Sosnowski ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Ethanolic Extract ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Traditional Use ◽  
Agar Disc ◽  
Ficus Lyrata

In the current investigation, screening of ethanolic extract obtained from Ficus lyrata leaves against pathogenic bacteria has been done in order to assess the antimicrobial activity aimed at detecting new sources of antimicrobial agents. The antimicrobial activity of the extract was determined using agar disc diffusion method. The antibacterial activity of leaf extract of F. lyrata was tested against human pathogenic bacteria — both Gram-positive (Staphylococcus aureus, methicillin-resistant S. aureus and Streptococcus pneumoniae) and Gram-negative strains (Klebsiella pneumoniae, Pseudomonas aeruginosa, and Escherichia coli). The results of this study provide evidence that the ethanolic extract of F. lyrata leaves has a mild antimicrobial activities, apparently, attributed to the presence of various secondary metabolites, which confirm the traditional use of this plant for the treatment of diseases caused by pathogens. These data allow us to suggest that the extracts of F. lyrata can be used to discover antibacterial substances for developing new pharmaceuticals to control clinically important pathogens responsible for severe disorders.

scholarly journals Synthesis, Spectral Analysis and Evolution of Antimicrobial Activity of Schiff Base of Cyanoacetohydrazide

2015 ◽  
Vol 52 ◽  
pp. 100-110 ◽  
Author(s):  
Juvansinh Jadeja ◽  
Mayank Mamtora ◽  
Mitesh B. Gondaliya ◽  
Rohit Manawar ◽  
Manish K. Shah
Keyword(s):  
Antimicrobial Activity ◽  
Spectral Analysis ◽  
Schiff Base ◽  
Antimicrobial Agents ◽  
Spectroscopic Methods ◽  
Antimicrobial Potential

In search of some antimicrobial agents, synthesis of some Schiff base of cyanoacetohydrazide derivatives has been reported. The structures of all the synthesized compounds were established on the bases of various spectroscopic methods. All Schiff base were screened for antimicrobial activity. cyanoacetohydrazide were found to possess better antimicrobial potential.

scholarly journals Evaluation of Toxicity and Antimicrobial Activity of an Ethanolic Extract from Leaves of Morus alba L. (Moraceae)

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Alisson Macário de Oliveira ◽  
Matheus da Silva Mesquita ◽  
Gabriela Cavalcante da Silva ◽  
Edeltrudes de Oliveira Lima ◽  
Paloma Lys de Medeiros ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antimicrobial Agents ◽  
Serum Alkaline Phosphatase ◽  
Ethanolic Extract ◽  
Morus Alba ◽  
High Dispersion ◽  
Histopathological Analysis ◽  
Phytochemical Analysis ◽  
White Pulp ◽  
Oral Toxicity

This work evaluated an ethanolic extract from Morus alba leaves for toxicity to Artemia salina, oral toxicity to mice, and antimicrobial activity. Phytochemical analysis revealed the presence of coumarins, flavonoids, tannins, and triterpenes in the extract, which did not show toxicity to A. salina nauplii. No mortality and behavioral alterations were detected for mice treated with the extract (300 and 2000 mg/kg b.w.) for 14 days. However, animals that received the highest dose showed reduced MCV and MCHC as well as increased serum alkaline phosphatase activity. In treatments with the extract at both 300 and 2000 mg/kg, there was a reduction in number of leukocytes, with decrease in percentage of lymphocytes and increase in proportion of segmented cells. Histopathological analysis of organs from mice treated with the extract at 2000 mg/kg revealed turgidity of contorted tubules in kidneys, presence of leukocyte infiltration around the liver centrilobular vein, and high dispersion of the spleen white pulp. The extract showed antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans, Candida krusei, Candida tropicalis, and Aspergillus flavus. In conclusion, the extract contains antimicrobial agents and was not lethal for mice when ingested; however, its use requires caution because it promoted biochemical, hematological, and histopathological alterations.

Synthesis of Azoloquinazolines and Substituted Benzothiazepine as Antimicrobial Agents

2020 ◽  
Vol 20 (5) ◽  
pp. 418-429 ◽  
Author(s):  
Asmaa F. Kassem ◽  
Fatimah Alshehrei ◽  
Eman M.H. Abbas ◽  
Thoraya A. Farghaly
Keyword(s):  
Antimicrobial Activity ◽  
Spectral Data ◽  
Heterocyclic Compounds ◽  
Antimicrobial Agents ◽  
Biological Activities ◽  
Heterocyclic Amines ◽  
Pharmaceutical Chemistry ◽  
Quinazoline Derivative ◽  
Efficient Approach ◽  
Wide Range

Background & Objective:Quinazolines and their fused systems are noteworthy in pharmaceutical chemistry due to their wide range of biological activities.Methods:A direct and efficient approach for the synthesis of new series of fused quinazolines with triazole, thiazole, benzimidazole and tetrazole has been preceded via the reaction of quinazoline thione derivative with halogenated compounds or cyclocondensation of arylidene of quinazoline derivative with heterocyclic amines. Also, dibenzo[b,e][1,4]thiazepine derivatives was synthesized through the reaction of 2,6-bis-(2-chloro-benzylidene)-cyclohexanone with o-aminothiophenol.Results:The structures of all new synthesized heterocyclic compounds were confirmed and discussed on the bases of spectral data. The utility of the preparation and design of the above mentioned compounds has been shown to be clear in the results of their antimicrobial activity which revealed that some derivatives have potent activity exceeding or similar to the activity of the reference drugs.Conclusion:The insertion of triazole or thiazole moieties to be fused with quinazoline ring helps to enhance its antimicrobial activity.

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