Altitudinal variation in gallic acid content in fruits of Phyllanthus emblica L. and its correlation with antioxidant and antimicrobial activity

2019 ◽  
Vol 32 (3) ◽  
pp. 387-396 ◽  
Author(s):  
Shagun Sheoran ◽  
Prakriti Nidhi ◽  
Vikas Kumar ◽  
Gajender Singh ◽  
Uma Ranjan Lal ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Gallic Acid ◽  
Acid Content ◽  
Phyllanthus Emblica ◽  
Altitudinal Variation ◽  
Antioxidant And Antimicrobial Activity

scholarly journals EVALUATION OF ANTIOXIDANT AND ANTIMICROBIAL ACTIVITY OF PARIS POLYPHYLLA SM.

2017 ◽  
Vol 10 (11) ◽  
pp. 315 ◽  
Author(s):  
Homsingli Mayirnao ◽  
Arbeen Ahmad Bhat
Keyword(s):  
Antimicrobial Activity ◽  
Gallic Acid ◽  
Plant Species ◽  
Indian Subcontinent ◽  
Bacterial Species ◽  
Radical Scavenging ◽  
Water Extract ◽  
Fungal Strains ◽  
Paris Polyphylla ◽  
Antioxidant And Antimicrobial Activity

  Objectives: Paris polyphylla Sm. is a very important anti-cancerous plant species found in the Himalayan region of India. The present study was carried out to determine the phenolic and flavonoid content, antioxidant and antimicrobial activity of its rhizome.Methods: Antioxidant activity of rhizome extract was evaluated through 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay. Antimicrobial activity was evaluated through disc diffusion assay against two bacterial and two fungal strains. The bacterial species used in the present study were Escherichia coli and Staphylococcus aureus and the fungal strains used were Aspergillus niger and Trichoderma reesei. Results: The standard curve of Gallic acid revealed that the phenolic content of our sample is 43.01±0.17 mg Gallic acid equivalents (GAE)/g dry weight (DW). Similarly, flavonoids were obtained as 28±0.12 mg quercetin equivalent/g DW of the sample. It was observed that the methanolic rhizome extract showed higher antioxidant potential than water extract with the IC50 value of 1.09 mg/ml. Further, the rhizome extract of P. polyphylla species exhibited significant antimicrobial activity and it was observed that at concentration of 5 mg/ml of the sample, the percentage inhibition was 95-97% in E. coli, S. aureus and A. niger whereas in case of T. reesei it was 74%.Conclusion: This study is first of its kind in the Indian subcontinent on this plant species and these findings indicate the tremendous and promising potential of this wonder herb. A lot of work has already been done in China on this species, therefore, further studies are required for the conservation and sustainable use in Indian subcontinent before this species is thrown into extinction as it has already been declared vulnerable.

scholarly journals ANTIOXIDANT AND ANTIMICROBIAL ACTIVITY OF BIOACTIVE CHITOSAN FILMS

2022 ◽  
Vol 52 (1) ◽  
pp. 61-65
Author(s):  
Maria Belen Vignola ◽  
Matias Alejandro Raspo ◽  
Cesar Gerardo Gómez ◽  
Alfonsina Ester Andreatta
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Salicylic Acid ◽  
Gallic Acid ◽  
Tween 80 ◽  
Food Preservation ◽  
The Other ◽  
Food Packages ◽  
Chitosan Films ◽  
Antioxidant And Antimicrobial Activity

Interest in the development of films for food preservation is increasing due to the improvement achieved in the food preservation time with the advent of new packaging technologies. Chitosan is a widely used biopolymer produced from the deacetylation of chitin, which has a good capacity to form suitable films as food packages. On the other hand, bioactive compounds such as gallic acid and salicylic acid act as inhibitors of the oxidant activity of free radicals and delay the decomposition of food. In this sense, the preparation of chitosan films modified with the mixture incorporation of salicylic acid/sorbitol or gallic acid/Tween 80 was proposed, using sorbitol or Tween 80 as plasticizers. Both films (chitosan/gallic acid/Tween 80 and chitosan/salicylic acid/sorbitol) showed a good antioxidant capacity in while the chitosan/gallic acid/Tween 80 film evidenced its antimicrobial activity against Escherichia coli ATCC 25922 causing a diminution of unit forming colony

Formualtion and Evaluation of Punica Topical Gel for its Content of Gallic Acid and Anti-Microbial Study

2016 ◽  
Vol 6 (3) ◽  
Author(s):  
Tejaswi Chalke ◽  
Krishna Sharma ◽  
S. Nagare ◽  
S. Jirge
Keyword(s):  
Antimicrobial Activity ◽  
Gallic Acid ◽  
Aqueous Extract ◽  
Acid Content ◽  
Physicochemical Parameters ◽  
Punica Granatum ◽  
Topical Formulation ◽  
Topical Gel ◽  
Anti Fungal ◽  
Microbial Study

Dried, powdered peel of Punica granatum was extracted with aqueous as solvent using soxhlet. Topical formulation gels were formulated with different combination of polymers and aqueous extract of punica. These formulations were evaluated for their physicochemical parameters, viscosity, spreadability, gallic acid content (by HPLC) and antimicrobial activity. Gel was successfully formulated and evaluated for the pharmaceutical parameters of the formulation and also for the content of gallic acid (3.5%). The gel gave very well anti bacterial and anti fungal activity. The in-house punica gel showed most effective antimicrobial activity against B. subtilis, P. aeruginosa, K. Pneumonia, A. niger.

Antioxidant and antimicrobial activity of willow herb (Epilobium angustifolium L.)

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
I Kosalec ◽  
M Zovko ◽  
K Sankovic ◽  
D Kremer ◽  
S Pepeljnjak
Keyword(s):  
Antimicrobial Activity ◽  
Epilobium Angustifolium ◽  
Antioxidant And Antimicrobial Activity

The Comparative Study of Equisetum pratense, E. sylvaticum, E. telmateia: Accumulation of Silicon, Antioxidant and Antimicrobial Screening

2019 ◽  
Vol 70 (7) ◽  
pp. 2519-2523
Author(s):  
Denisa Batir Marin ◽  
Oana Cioanca ◽  
Mihai Apostu ◽  
Cristina Gabriela Tuchilus ◽  
Cornelia Mircea ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Methanol Extract ◽  
Previous Treatment ◽  
Total Phenolic ◽  
Quantitative Chemical Analysis ◽  
Qualitative And Quantitative ◽  
Antioxidant And Antimicrobial Activity ◽  
The Comparative Study

The objective of the current study is represented by the determination of silica and a phytochemical screening of phenolic derivates of some Equisetum species. The antioxidant and antimicrobial activity for Equisetum pratense Ehrh.,, Equisetum sylvaticum L. and Equisetum telmateia Ehrh. (sin. Equisetum maximum Lam.) were also investigated. The concentration of silicon (Si) in plants was determined by the spectrophotometric method using previous treatment with NaOH 50% both for the stem and the nodal branches [1]. Results obtained varied from 95.12 to 162.10 SiO2 mg/g dry plant which represents 4.44% to 7.58% Si/100g dry sample. Two types of total extracts were obtained using different solvents and were subjected to qualitative and quantitative chemical analysis considering total phenolic content [2]. The highest concentration of investigated compounds was found in the methanolic extract, E. sylvaticum, 196.5mg/g dry sample. Antioxidant activity was monitored spectrophotometrically and expressed in terms of IC50 (�g/mL) [3]. Values gathered ranged from 261.7 to 429.5 �g/mL. The highest capacity to neutralized DPPH radicals was found in E. sylvaticum. In vitro antimicrobial activity was determined using difusimetric method [4]. Testing was performed on four microorganisms: three strains of bacteria and one species of fungi. Different effects were noticed against the bacteria, furthermore the methanol extract appeared to be most efficient. All extracts showed significand antimicrobial activity against Staphylococcus aureus (ATCC 25923) and Candida albicans (ATCC 90028) and weak to no activity against Pseudomonas aeruginosa (ATCC 27853) and Escherichia coli (ATCC 25922).

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