Evaluation of Antioxidant Properties, Total Phenolic Content, and Biological Activities of New Tomato Hybrids of Industrial Interest

2012 ◽  
Vol 15 (5) ◽  
pp. 483-489 ◽  
Author(s):  
Giuseppina Tommonaro ◽  
Rocco de Prisco ◽  
Gennaro Roberto Abbamondi ◽  
Stefania Marzocco ◽  
Carmela Saturnino ◽  
...  
Keyword(s):  
Total Phenolic Content ◽  
Phenolic Content ◽  
Biological Activities ◽  
Antioxidant Properties ◽  
Total Phenolic

scholarly journals Antioxidant Activity and Total Phenolic Content in Shiitake Mycelial Exudates

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Weihuan Huang ◽  
Joo-Shin Kim ◽  
Hau Yin Chung
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
In Vitro Assays ◽  
Total Phenolic ◽  
Shiitake Mushroom ◽  
Ferrous Ions

Exudates (DE) secreted from two shiitake mushroom mycelia (strains 1358 and L5458) were evaluated for their antioxidative properties and phenolic content. 1358DE and L5458DE showed distinct antioxidant activity in different in vitro assays, including scavenging activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, hydroxyl radical, superoxide anions and hydrogen peroxide; the ability to chelate ferrous ions; reducing power; hemolysis inhibition activity in rat erythrocyte; and lipid peroxidation inhibition (IC50 values of 1358DE and L5458DE were 3.3 and 132.6; 44.5 and > 1000; 26.9 and 53.7; 153.6 and >175.0; 176.0 and 521.0; 26.7 and 746.4; 47.8 and 736.9; and 3.1 and > 1000 μg/mL, respectively). Their total phenolic content was 237.33 and 24.08 mg gallic acid equivalent (GAE)/g of dry DE, respectively. Overall, these results show that 1358DE generally possesses better antioxidant properties than L5458DE, possibly due to its larger total phenolic content. Shiitake mushroom mycelial exudates, particularly of 1358DE, could be a good source of natural antioxidants.

scholarly journals Antioxidant Properties of Crude Extract, Partition Extract, and Fermented Medium of Dendrobium sabin Flower

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Farahziela Abu ◽  
Che Norma Mat Taib ◽  
Mohamad Aris Mohd Moklas ◽  
Sobri Mohd Akhir
Keyword(s):  
Antioxidant Activity ◽  
Crude Extract ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Correlation Relationship ◽  
Good Potential ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Antioxidant properties of crude extract, partition extract, and fermented medium from Dendrobium sabin (DS) flower were investigated. The oven-dried DS flower was extracted using 100% methanol (w/v), 100% ethanol (w/v), and 100% water (w/v). The 100% methanolic crude extract showed the highest total phenolic content (40.33 ± mg GAE/g extract) and the best antioxidant properties as shown by DPPH, ABTS, and FRAP assays. A correlation relationship between antioxidant activity and total phenolic content showed that phenolic compounds were the dominant antioxidant components in this flower extract. The microbial fermentation on DS flower medium showed a potential in increasing the phenolic content and DPPH scavenging activity. The TPC of final fermented medium showed approximately 18% increment, while the DPPH of fermented medium increased significantly to approximately 80% at the end of the fermentation. Dendrobium sabin (DS) flower showed very good potential properties of antioxidant in crude extract and partition extract as well as better antioxidant activity in the flower fermented medium.

Chemical components and biological activities of two freshwater green algae from Ordu, Turkey / Türkiye’nin Ordu ilinden iki tatlı su yeşil alglerinin kimyasal bileşenleri ve biyolojik aktiviteleri

2015 ◽  
Vol 40 (6) ◽  
Author(s):  
Beyhan Taş ◽  
Ömer Ertürk ◽  
Özlem Yılmaz ◽  
Melek Çol Ayvaz ◽  
Emine Yurdakul Ertürk
Keyword(s):  
Antimicrobial Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Biological Activities ◽  
Algal Species ◽  
Acetone Extract ◽  
Diethyl Ester ◽  
Diffusion Method ◽  
Total Phenolic ◽  
Green Algal

AbstractObjective: Scientists are looking for new resources which have biological activities. The present study was planned to evaluate the antioxidant and antimicrobial activity of ethanol and acetone extracts, as well as the volatile compounds of two freshwater green algal species Spirogyra spp. and Zygnema stellinum (Vaucher) C. Agardh belonging to Zygnemaphyceae (Conjugatophyceae) obtained from Ordu University Campus wetlands.Methods: The extracts were tested in vitro for their antimicrobial effects using disc diffusion method. Total phenolic content and the antioxidative activity according to FRAP and DPPH methods of the extracts were also determined. The secondary metabolites from the investigated extracts were identified using GC-MS.Results: The extracts dramatically inhibited almost all tested microorganisms. The antimicrobial activity of the acetone extract of the Zygnema against C. albicans was found as more higher than positive control Nystatin. In accordance with antimicrobial activity, the highest total phenolic content was also determined in the presence of the acetone extract of the Zygnema. Furthermore the highest FRAP value and the lowest EC50 (mg/mL) value were calculated for the same extract. The main components of the all consisted of dimethyl and diethyl ester of 1,2-benzenedicarboxylic acid. However, the abundance of these metabolites in the extracts was not associated with antimicrobial or antioxidant activity. Biological activities of these algal species could be attributed to chemicals such as 1-Pentadecene and 1-Tetradecene which were present in smaller amounts.Conclusion: Investigated algal species can be evaluated to use in biotechnological applications such as food industry and medicine.

Microencapsulation of Thunbergia laurifolia Crude Extract and Its Antioxidant Properties

2020 ◽  
Author(s):  
Catherine Nabbala ◽  
Wunwisa Krasaekoopt
Keyword(s):  
Antioxidant Activity ◽  
Crude Extract ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Storage Temperature ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Coating Materials ◽  
Antioxidant Power ◽  
Thunbergia Laurifolia

In this study, the antioxidant activity and total phenolic content of Thunbergia laurifolia Lindl. or Rang Chuet (RC) extracts from leaf, stem and rhizome were evaluated by using ferric reducing antioxidant power assay (FRAP) and the folin ciocalteu method for total phenolic compounds (TPC).The extracts were prepared by infusion using different amount of plant powder (2.5, 5.0, and 7.5 g) at different concentrations of ethanol as 0, 25, 50, and 75% and extraction time of 24, 48, and 72 h. The crude extract of 7.5 g leaf powder extracted for 72 h using water as the extraction solvent showed the highest antioxidant properties and total phenolic content. This extraction condition produced a FRAP content of 2.62 ± 0.01 mmol Fe2+/g that was significantly differed from those of the stem and rhizome and the highest TPC content of 877.36±18.75 (mg GAE/g). The crude extract from the leaf was subsequently encapsulated by using β-cylcodextrin (BCD) and maltodextrin 20DE (MD) as coating materials using freeze drying method. The encapsulated powder was investigated for its antioxidant activity. The highest encapsulation efficiency (EE) was obtained when only maltodextrin 20DE was used. The storage stability of encapsulated T. luarifolia leaf crude extract was then studied by storing the encapsulated powder at 35, 45, and 55°C for 5 weeks. The storage temperature had no effect on the stability of the encapsulated powder when TPC was used as the criteria unlike that of FRAP which was inconsistent during storage.

Optimization of Drying and Extraction Process of Pereskia bleo Leaves in Determining Antioxidant Properties Utilizing Pareto ANOVA

2014 ◽  
Vol 548-549 ◽  
pp. 96-100
Author(s):  
Shareena Fairuz Abdul Manaf ◽  
Nur Shahidah Ab Aziz ◽  
Syawal Abdullah ◽  
Rafeqah Raslan ◽  
Fazlena Hamzah ◽  
...  
Keyword(s):  
Gallic Acid ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Herbal Medicines ◽  
Extraction Process ◽  
Total Phenolic ◽  
Drying Time ◽  
Standard Curve ◽  
Three Factor

Pereskia Bleois commonly used among the local traditional medicine practitioners to prevent or treat cancer by consuming the leaves either raw or taken as a concoction brewed from fresh leaves. However, more research, regulation and standardization are required before herbal medicines can be recommended as effective and safe therapies. The objectives of this study are to obtain the optimum drying parameter and to identify the concentrations of phenolic content expressed as gallic acid equivalents (GAEs) inPereskia bleoleaves. Pareto ANOVA method was used to study the optimum condition and the total phenolic content via F-Test using three samples for variance and three-factor with replication. Taguchi ANOVA was performed using SN ratio with L9 orthogonal array to accommodate the three factor level. The drying time were tested for 3 hours, 4 hours and 5 hours. The result shows that drying time is the significant factor in drying process and followed by drying temperature and solvent volume used. The drying experiments were conducted at operating temperature of 35 °C, 40 °C and 45 °C. While the extraction were conducted at different volume using methanol of 150 ml, 180 ml and 200 ml. The standard curve of total phenolic content was based on the gallic acid compound. The total phenolic content in C2 was at the most suitable for being used as antioxidant for consumption in human body with drying time of 5 hours at 45 °C by using 180 ml of methanol for extraction ofP.bleoleaves.

scholarly journals Antioxidants properties of Murraya koenigii: a comparative study of three different extraction methods

Food Research ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 43-49
Author(s):  
M.T. Parithy ◽  
Mohd Zin Z. ◽  
Hasmadi M. ◽  
N.D. Rusli ◽  
K.L. Smedley ◽  
...  
Keyword(s):  
Total Phenolic Content ◽  
High Performance ◽  
Phenolic Content ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Thiobarbituric Acid ◽  
Extraction Methods ◽  
Total Phenolic ◽  
Assisted Extraction ◽  
Pharmaceutical Industries

Nutraceutical and pharmaceutical industries have been increasingly engaged in finding natural alternatives compounds as potential antioxidants. The use of phytochemicals is introduced as a good source of natural antioxidants. Murayya koenigii leaves, commonly used in cooking and traditional medicines have been examined for their remarkable antioxidant potential, yet still, it remains an understudied herb. Therefore, this study aimed to determine the antioxidant properties and flavonoids profile in M. koenigii leaves extracted using; solvent assisted extraction (SAE), microwave assisted extraction (MAE) and ultrasonic assisted extraction (UAE). The antioxidant properties of M. koenigii were analysed qualitatively and quantitatively using high performance liquid chromatography (HPLC). M. koenigii leaves extracted using the UAE method have responded strongly towards a 2, 2-diphenyl -2-picryl-hydrazyl DPPH assay with the highest inhibition (%) of 78.00±1.00. Using the ferric thiocyanate (FTC) and thiobarbituric acid (TBA) method assays, the M. koenigii leaves with the lowest absorbance were assigned as a sample with the highest antioxidant activity. The M. koenigii leaves extracted using UAE had the lowest absorbance with 0.01±0.00. In the TPC assay, the MAE method showed the highest total phenolic content (120.60±14.81 mg GAE/g sample). The TFC assay demonstrated that MAE methods have the highest total phenolic content (93.38±4.33 mg QE/g sample. The M. koenigii leaves extracted by MAE showed the highest gallic acid, catechin, epigallocatechin gallate, rutin and kaempferol concentration (mg/L). M. koenigii leaves subjected to SAE extraction has the highest concentration of p-coumaric acid, myricetin and quercetin (mg/L). This study found that M. koenigii leaves extracted using UAE exhibited better antioxidant activities than that of MAE and SAE. These useful findings have managed to narrow the knowledge gap regarding the effects of different extraction methods on the antioxidant property of M. koenigii.

Sign in / Sign up

Export Citation Format

Share Document