scholarly journals Characterization, antibacterial and antioxidant properties of silver nanoparticles synthesized from aqueous extracts of Allium sativum, Zingiber officinale, and Capsicum frutescens

2017 ◽  
Vol 13 (50) ◽  
pp. 201 ◽  
Author(s):  
GloriaAderonke Otunola ◽  
AnthonyJide Afolayan ◽  
EmmanuelOlusegun Ajayi ◽  
SamuelWale Odeyemi
Keyword(s):  
Silver Nanoparticles ◽  
Allium Sativum ◽  
Antioxidant Properties ◽  
Zingiber Officinale ◽  
Aqueous Extracts ◽  
Capsicum Frutescens

Efficacy of certain plant extracts against seed-borne infection of Trichoconiella padwickii in paddy (Oryza sativa)

1989 ◽  
Vol 67 (7) ◽  
pp. 1956-1958 ◽  
Author(s):  
Sudheer A. Shetty ◽  
H. S. Prakash ◽  
H. Shekara Shetty
Keyword(s):  
Oryza Sativa ◽  
Plant Extracts ◽  
Allium Sativum ◽  
Oryza Sativa L ◽  
Zingiber Officinale ◽  
Stem Bark ◽  
Ocimum Basilicum ◽  
Aqueous Extracts ◽  
Inhibitory Effects ◽  
Seed Extracts

Aqueous extracts of leaves, bark, stems, and seeds of Strychnos nux-vomica L., bulbs of Allium sativum L., rhizome of Zingiber officinale Rasc., leaves of Ocimum basilicum L., and fruits of Azadirachta indica A. Juss were used to control Trichoconiella padwickii (Ganguly) Jain in seeds of paddy (Oryza sativa L.). The seeds were soaked in 10, 20, and 30% extracts (w/v) for 12, 24, and 48 h. All the extracts had significant inhibitory effects on the fungus. Stem, bark, and seed extracts (20% w/v) of S. nux-vomica were more effective than other plant extracts and 0.3% of Mancozeb in controlling the fungus. None of the plant extracts were phytotoxic at the tested concentrations.

scholarly journals Ecofriendly Synthesis of Silver Nanoparticles Using Aqueous Extracts of Zingiber officinale (Ginger) and Nigella sativa L. Seeds (Black Cumin) and Comparison of Their Antibacterial Potential

2020 ◽  
Vol 12 (24) ◽  
pp. 10523
Author(s):  
Alaa H. Alkhathlan ◽  
Hessah A. AL-Abdulkarim ◽  
Mujeeb Khan ◽  
Merajuddin Khan ◽  
Abdullah AlDobiy ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Nigella Sativa ◽  
Synergetic Effect ◽  
Antibacterial Properties ◽  
Zingiber Officinale ◽  
Aqueous Extracts ◽  
Ag Nps ◽  
Black Cumin ◽  
Vis Spectroscopy

Applications of chemical synthetic methods for the preparation of metal nanoparticles involve toxic reagents, which are hazardous to both humans and the environment. On the other hand, ecofriendly plant-based techniques offer rapid, non-toxic, and suitable alternatives to the traditional methods. Herein, we report an eco-friendly method for the preparation of silver nanoparticles (Ag NPs) using two different aqueous extracts of Zingiber officinale (ginger) and Nigella sativa L. seeds (black cumin). Successful preparation of Ag NPs was confirmed by X-ray diffraction, ultraviolet–visible (UV-Vis) spectroscopy, and energy dispersive spectroscopy (EDX). Transmission electron microscopy (TEM) analysis revealed that Nigella sativa L. seed extract (NSE) produced a smaller size of NPs (~8 nm), whereas the ginger extract (GE) led to the formation of slightly larger Ag NPs (~12 nm). In addition, to study the effect of concentration of the extract on the quality of resulting NPs, two different samples were prepared from each extract by increasing the concentrations of the extracts while using a fixed amount of precursor (AgNO3). In both cases, a high concentration of extract delivered less agglomerated and smaller-sized Ag NPs. Furthermore, the antibacterial properties of as-prepared Ag NPs were tested against different bacterial strains. Notably, despite the slightly better quality of Ag NPs obtained from NSE (NSE-Ag), NPs prepared by using GE (GE-Ag) demonstrated superior antibacterial properties. In case of the plant-extract-based synthesis of nanoparticles, it is widely reported that during the preparation, the residual phytomolecules remain on the surface of resulting NPs as stabilizing agents. Therefore, in this case, the high antibacterial properties of GE-Ag can be attributed to the contributing or synergetic effect of residual phytomolecules of GE extract on the surface of Ag NPs, since the aqueous extract of GE has been known to possess higher intrinsic bactericidal properties when compared to the aqueous NSE extract.

scholarly journals PERBANDINGAN AKTIVITAS ANTIOKSIDAN JAHE EMPRIT (Zingiber officinale var Amarum) DAN JAHE MERAH (Zingiber officinale var Rubrum) DALAM SEDIAAN CAIR BERBASIS BAWANG PUTIH DAN KORELASINYA DENGAN KADAR FENOL DAN VITAMIN C

2019 ◽  
Vol 6 (1) ◽  
pp. 315-324
Author(s):  
Ike Yulia Wiendarlina ◽  
Runi Sukaesih
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Allium Sativum ◽  
Antioxidant Properties ◽  
Zingiber Officinale ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Red Ginger ◽  
Gallic Acid Equivalent

Garlic (Allium sativum L.), ginger emprit (Zingiber officinale var Amarum) and red ginger (Zingiber officinale var Rubrum) contain active compounds from the phenol group which have antioxidant properties. This study aims to determine the ratio of antioxidant activity of red ginger and ginger in garlic-based liquid preparations using DPPH reagent (1.1 diphenyl-2 picrylhydrazyl) and determine its correlation with total phenol and vitamin C levels contained in both liquid preparations. Total phenol content was determined by reacting folin-ciocalteu and vitamin C levels were determined by titrimetric method. Total phenol levels are expressed as mg GAE (Gallic Acid Equivalent) per gram of preparation, antioxidant activity is expressed as IC50 (µg / mL), and vitamin C is expressed as percent (%). The results show that total phenol content of emprit and red ginger in garlic-based preparation were 80,296 mgGAE / g preparations and 159,164 mgGAE / g preparations respectively, antioxidant activity (IC50) for each preparation were 3,310 µg / mL and 2,075 µg / mL respectively and the vitamin C level were 4.338% and 6.372%. Correlation test showed the very strong and significant correlation existed between antioxidant activity and the total phenol levels in both emprit and red ginger-garlic preparation but no significant correlation detected between antioxidant activity and vitamin C levels of both preparations.

Evaluation of diuretic and antioxidant properties in aqueous bark and fruit extracts of pine

2020 ◽  
Vol 17 ◽  
Author(s):  
Hadi Shariati ◽  
Mohammad Hassanpour ◽  
Gholamreza Sharifzadeh ◽  
Asghar Zarban ◽  
Saeed Samarghandian ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Pine Bark ◽  
Male Rats ◽  
Total Phenolic ◽  
Dependent Manner ◽  
Aqueous Extracts ◽  
Antioxidant Power ◽  
Dose Dependent

Objective: The present study has been carried out to evaluate the diuretic and antioxidant properties of pine herb in an animal model. Materials and Methods: 45 adult male rats were randomly divided into nine groups including: groups I (the negative control), groups II (positive control, furosemide 10 mg/kg), groups III to VIII (treatment groups received 100, 200, 400 mg/kg of the aqueous extracts of bark and fruit) and group IX received the combination of aqueous extract of bark (100 mg/kg) and the fruit (100 mg/kg). The urine output, glomerular filtration rate (GFR), electrolytes, urea, and creatinine levels were evaluated . Furthermore, the phenolic content and antioxidant activity of both extracts were also assessed using 2, 2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) and Folin–Ciocalteu methods. Results: The aqueous extracts of the pine bark and fruit increased the urinary output in a dose-dependent manner. The combination of the two extracts compared to the other extracts alone significantly increased the serum potassium level. This study also showed each extract increase creatinine clearance in a dose-dependent manner (p<0.01 and p<0.05). The increase of GFR in the combination group was not significant. The current data showed a significant increase in the total phenolic content in pine bark extract in compared with the fruit extract. Conclusion: The pine bark and fruit can be useful in the prevention and treatment of kidney stones due to the high antioxidant activity.

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