Evaluation of Antioxidant and Antimicrobial Activity of Water-Soluble Peptides Extracted from Iranian Traditional Kefir

2021 ◽  
Vol 27 (2) ◽  
pp. 1441-1449
Author(s):  
Azam Sodanlo ◽  
Maryam Azizkhani
Keyword(s):  
Antimicrobial Activity ◽  
Water Soluble ◽  
Antioxidant And Antimicrobial Activity

scholarly journals HPLC Quantification of Phenolic Acids from Vetiveria zizanioides (L.) Nash and Its Antioxidant and Antimicrobial Activity

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Jha Prajna ◽  
Jindal Richa ◽  
Chakraborty Dipjyoti
Keyword(s):  
Antimicrobial Activity ◽  
Cell Wall ◽  
Phenolic Acids ◽  
Extraction Procedure ◽  
Antioxidant Property ◽  
Water Soluble ◽  
Vetiveria Zizanioides ◽  
Dihydroxybenzoic Acid ◽  
Antioxidant And Antimicrobial Activity ◽  
Lignin Deposition

Extraction procedure was standardized and for the soluble, glycoside, and wall-bound fractions of phenolic acids from Vetiveria zizanioides. The water soluble alkaline extract which represents the cell wall-bound fraction contained the highest amount of phenolic acids (2.62 ± 1.2 μM/g fwt GA equivalents). Increased phenolic content in the cell wall indicates more lignin deposition which has an important role in plant defense and stress mitigation. Antioxidant property expressed as percentage TEAC value obtained by ABTS assay was correlated with the amount of phenolic acids and showed a Pearson's coefficient 0.988 (significant at 0.01 level). The compounds p-coumaric acid, p-dihydroxybenzoic acid, and ferulic acid were detected in the acidic extracts by HPLC analysis. The plant extracts exhibited considerable antimicrobial activity against tested bacterial and fungal strains.

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).

scholarly journals Antioxidant and antimicrobial activity of stingless bee bread and propolis extracts

2017 ◽  
Author(s):  
Rabieatul Adawieah Md Akhir ◽  
Mohd Fadzelly Abu Bakar ◽  
Shuaibu Babaji Sanusi
Keyword(s):  
Antimicrobial Activity ◽  
Stingless Bee ◽  
Bee Bread ◽  
Antioxidant And Antimicrobial Activity
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