scholarly journals Chemical composition, antimicrobial activity, antioxidant and total phenolic content within the leaves essential oil of Artemisia absinthium L. growing wild in Iran

2013 ◽  
Vol 7 (2) ◽  
pp. 30-36 ◽  
Author(s):  
Mahboubeh Taherkhani
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Artemisia Absinthium

Formulation, Characterization and Antimicrobial efficacy of Aegle marmelos Essential oil nanogel

2021 ◽  
pp. 3662-3668
Author(s):  
Riham Omar Bakr ◽  
Soumaya Saad Zaghloul ◽  
Reham Ibrahim Amer ◽  
Dalia Abd Elaty Mostafa ◽  
Mahitab Helmy El Bishbishy
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Colorimetric Assay ◽  
Diffusion Method ◽  
Total Phenolic ◽  
Aegle Marmelos ◽  
Phytochemical Study ◽  
Esi Ms

Objective: Aegle marmelos (L.) Correa has been widely used in Indian traditional medicine and has many reported pharmacological activities. The aim of this research was to formulate solid lipid nanoparticles (SLNs) of Aegle oil (AO) that enhanced the beneficial antimicrobial activity of the oil. Methods: The chemical composition of Aegle leaf essential oil was analysed by GC-MS. Additionally, a phytochemical study of A. marmelos methanolic leaf extract was conducted using Folin-Ciocalteu colorimetric assay for determination of total phenolic content as well as ultra-performance liquid chromatography coupled to tandem mass spectrometry (UPLC-ESI-MS-MS) analyses for identification of individual components. Six formulations of AO-loaded SLNs (AO-SLNs) were prepared by a double emulsification method. The particle size, zeta potential (ZP), polydispersibility index (PDI) and drug encapsulation efficiency (EE) of the SLNs were determined. The morphology of the SLNs was observed by transmission electron microscopy (TEM). The antimicrobial activity of AO and AO-SLNs was assessed using disc diffusion method. Results: Thirty-two compounds were identified in the Aegle oil, of which Δ-carene and α-phellandrene were the most abundant (48.14% and 34.14%, respectively). The estimated total phenolic content was 968mg gallic acid equivalents (GAE)/g, while UPLC-ESI-MS-MS led to the tentative characterization of thirteen metabolites. The SLNs showed ZP, PDI and EE 125 ± 0.22nm, –37.85, 0.282, and 92%, respectively. AO and AO-SLNs showed significant antimicrobial activity, and the SLNs could sustain the release of AO from their gel vehicles. Conclusion: Our results provide evidence for the application of AO-SLNs in topical and transdermal delivery systems.

Microwave Pretreatment of Vegetable Materials to Increase the Extraction Yield of Natural Products

2018 ◽  
Vol 69 (8) ◽  
pp. 1976-1979
Author(s):  
Ioana Asofiei ◽  
Ioan Calinescu ◽  
Adina Ionuta Gavrila ◽  
Daniel Ighigeanu ◽  
Diana Martin
Keyword(s):  
Natural Products ◽  
Chemical Composition ◽  
Phenolic Compounds ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Microwave Pretreatment ◽  
Pretreatment Time ◽  
Conventional Extraction

It was designed and built a laboratory experimental installation (LEI) for the microwave pretreatment of vegetable materials. To study the influence of microwave pretreatment on the total phenolic content (TPC), a conventional extraction of polyphenols from treated and untreated fresh sea buckthorn leaves was performed. For short extraction times, the amount of phenolic compounds was higher for the extracts obtained from treated leaves, but a long pretreatment time (28 s) led to a decrease in TPC. The qualitative analysis showed that the chemical composition is not affected by the microwave pretreatment.

scholarly journals Pharmacognostical, Phytochemical, Antioxidant and Antimicrobial Activity of Costus woodsonii

2019 ◽  
pp. 53-59
Author(s):  
Mukesh S Sikarwar ◽  
Chew Khai Szeek ◽  
Neeraj Paliwal
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Plant Extract ◽  
Total Phenolic Content ◽  
Leaf Extract ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
Concentration Test ◽  
Antioxidant And Antimicrobial Activity

Background: Herbal medicine mostly contains wide range of chemical compounds responsible for medicinal therapeutic use. Costus woodsonii is commonly called as Red Button Ginger and synonyms of the botanical name are Costus spiralis, Alpinia spiralis and Costus pisonis. In Malay, it is known as Setawar Halia Merah. In Chinese, it is known as Hong Bi Qiao Jiang. Objective: This research was conducted to study the pharmacognostical, phytochemical, antioxidant and antimicrobial activity of C. woodsonii leaf extracts. Method: Macroscopy, microscopy, phytochemical analysis, thin layer chromatography, antioxidant activity and antimicrobial activity of C. woodsonii leaf were carried out. Total flavonoids were estimated in the leaf extract. The total phenolic content of C. woodsonii leaf was determined using Folin-Ciocalteu reagent. The antioxidant activity of leaf extract of C. woodsonii was determined by performing DPPH radical scavenging. The microbial activity was determined by Well diffusion test, MIC (Minimum Inhibitory Concentration) test and MBC (Minimum Bactericidal Concentration) test. Result and Discussion: C. woodsonii belongs to costaceae with elliptical green leaves. Till now are no extensive studies on C. woodsonii. Preliminary phytochemical analysis revealed the presence of flavonoid, steroid, fat, phenol, tannin and mucilage in leaf extract. Physicochemical studies further revealed the ash value of leaf as 8.7%. Among the three extractions, alcohol extractive values showed the highest as 13%. Loss on drying at 105 degree Celsius in leaf was found to be 12.67%. The plant extract showed total phenolic content of 7.941 mg GAE/g at concentration of 5µg/ml. As for flavonoids content, plant extract showed 21.7 mg RE/g at concentration of 200µg/ml and 43.4 mg RE/g at concentration of 400µg/ml. For antioxidant activity, the plant extract showed weak antioxidant activity in DPPH scavenging activity assay. For antimicrobial test, the leaf extract of C. woodsonii showed weak antimicrobial activity. Conclusion: From this study, it can conclude that C. woodsonii leaf extract possess weak antioxidant activity and weak antimicrobial activity which need to be further validated by using more antioxidant assays and antimicrobial tests.

The chemical composition and in vitro digestibility of pistachio by-product

2007 ◽  
Vol 2007 ◽  
pp. 223-223 ◽  
Author(s):  
Atiyeh Bohluli ◽  
Abasali Naserian ◽  
Reza Valizadeh ◽  
Fereydon Eftekarshahroodi
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Total Phenolic Content ◽  
Dry Matter ◽  
Phenolic Content ◽  
Total Phenolic ◽  
In Vitro Digestibility ◽  
Pistachio Nuts ◽  
The World

Pistachio (pistachio vera) is from Anacardiaceae family. According to the FAO (2003) report, Iran is the largest pistachio producer in the world (more than 310,000 tons). The most three important exported pistachio nuts of Iran are Ohadi, Akbari and Kaleghuchi (Mohammadi, 2005). About 150,000 tons in DM of pistachio by-product (PB) is produced from dehulling process in Iran, annually. This by-product is mainly consisted of pistachio hulls (PH), and then peduncles, leaves and a little amount of mesocarp and kernels. In this experiment the chemical composition, Total Phenolic Content (TPC) and tannin amount of PB and PH of Ohadi, Kaleghuchi and white varieties were determined; also, In Vitro Dry Matter and Organic Matter Digestibility (IVDMD and IVOMD) were measured.

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