scholarly journals Antioxidant activity and total phenolic content of three varieties of Ginger (Zingiber officinale) in decoction and infusion extraction method

2020 ◽  
Vol 1567 ◽  
pp. 022028
Author(s):  
N Mahmudati ◽  
P Wahyono ◽  
D Djunaedi
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Extraction Method ◽  
Phenolic Content ◽  
Zingiber Officinale ◽  
Total Phenolic

Antioxidant and acetylcholinesterase inhibitory activities of ginger root (Zingiber officinale Roscoe) extract

2017 ◽  
Vol 14 (4) ◽  
Author(s):  
Bui Thanh Tung ◽  
Dang Kim Thu ◽  
Nguyen Thi Kim Thu ◽  
Nguyen Thanh Hai
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Zingiber Officinale ◽  
Total Phenolic ◽  
Phenolic Contents ◽  
Zingiber Officinale Roscoe ◽  
Etoac Fraction ◽  
Inhibitory Activities ◽  
Acetylcholinesterase Enzyme

AbstractBackgroundRoscoe has been used in traditional medicine for the treatment of neurological disorder. This study aimed to investigate the phenolic contents, antioxidant, acetylcholinesterase enzyme (AChE) inhibitory activities of different fraction ofMethodsThe roots ofResultsOur data showed that the total phenolic content of EtOAc fraction was highest equivalents to 35.2±1.4 mg quercetin/g of fraction. Our data also demonstrated that EtOAc fraction had the strongest antioxidant activity with ICConclusionsOur results suggest that the EtOAc fraction of

scholarly journals The Effect of Extraction Method on Total Phenolic Content and Antioxidant Activity of Salam Leaves (Syzygium polyanthum) using DPPH (1,1-Diphenyl-2-Picrylhidrazil)

2019 ◽  
Vol 24 (2) ◽  
pp. 72
Author(s):  
Sri Luliana ◽  
Hafrizal Riza ◽  
Eneng Neni Indriyani
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Total Phenolic Content ◽  
Extraction Method ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Endemic Plants ◽  
Herbal Products ◽  
Content Extraction ◽  
Selection Of

Extraction is an important step in separating bioactive compounds from the plant. The selection of extraction technique is also important in the standardization of herbal products, for if not observed it can remove the desired soluble constituents. One of Indonesia’s endemic plants which have been proven to have an antioxidant activity is Salam leaves (Syzygium polyanthum). This study aims to determine the effect of extraction method on total phenolic content and antioxidant activity of S. polyanthum leaves by counteracting free radicals mechanism using DPPH. The S. polyanthum leaves were extracted by maceration, soxletation, and infusa methods, and tested for the total phenolic content and the antioxidant activity. The results showed that the total phenolic content of each method extration is different. The total of the phenolic content extraction by maceration, soxhlet, and infusa method respectively were 338.62±21.3; 227.72±21.6; and 144.48±8.2 mgGAE/g. The best antioxidant activity was maceration method with IC50 17.53±0.11 µg/mL followed by soxhlet and infusa which were 18.73±0.31 and 40.26±0.18 µg/mL. The research conclusion is that the extraction method has an effect on the total phenol and antioxidant activity of S. polyanthum leaves.

scholarly journals Effects of Extraction Methods and Conditions on Bioactive Compounds Extracted from Phaeodactylum tricornutum

2020 ◽  
Vol 67 (4) ◽  
pp. 1250-1261
Author(s):  
Saniye Akyıl ◽  
Işıl İlter ◽  
Mehmet Koç ◽  
Zeliha Demirel ◽  
Ayşegül Erdoğan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Extraction Method ◽  
Phaeodactylum Tricornutum ◽  
Phenolic Content ◽  
Extraction Methods ◽  
Extraction Time ◽  
Total Phenolic ◽  
Solvent Ratio ◽  
Microwave Extraction

The effect of homogenization, ultrasound and microwave extraction methods and conditions on fucoxanthin content, total phenolic content and antioxidant activity of extracts obtained from Phaeodactylum tricornutum were investigated in this study. The solvent/biomass ratio was the most effective parameter on fucoxanthin content, total phenolic content and antioxidant activity. The maximum fucoxanthin content (5.60 ± 0.06 mg/g) and antioxidant activity (763.00 ± 15.88 EC50 μg/mL extract) were obtained with the homogenization extraction method whose optimum conditions were 1.93% biomass/solvent ratio, ~5200 rpm homogenization rate and 14.2 min extraction time. Although the ultrasonic extraction method has reached the approximately same level of fucoxanthin content (5.24 ± 0.07 mg/g)), TPC (67.68 ± 1.58 mg gallic acid/L) and antioxidant activity (619.90 ± 17.16 EC50 μg/mL extract) at an amplitude of 55.72%, a higher biomass/solvent ratio (2.72%) and a longer extraction time (17.37 min) have been required. The lowest fucoxanthin content, total phenolic content and antioxidant activity were determined for the microwave extraction method.

Natural Deep Eutectic Solvents (NaDESs) as Alternative Green Extraction Media for Ginger (Zingiber officinale Roscoe)

2021 ◽  
Vol 2 (4) ◽  
pp. 576-599
Author(s):  
Andromachi Tzani ◽  
Styliani Kalafateli ◽  
Grigorios Tatsis ◽  
Maria Bairaktari ◽  
Ioanna Kostopoulou ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Zingiber Officinale ◽  
Deep Eutectic Solvents ◽  
Extraction Time ◽  
Total Phenolic ◽  
Optimum Conditions ◽  
Natural Deep Eutectic Solvents ◽  
Zingiber Officinale Roscoe

The extraction of valuable phytochemicals from natural sources is an important and constantly evolving research area. Zingiber officinale Roscoe (ginger) contains high amounts of bioactive phytochemicals, which are desirable due to their significant properties. In this work, the ability of different natural deep eutectic solvents (NaDESs) to serve as green solvents for the preparation of high added value extracts from ginger is explored, in combination with ultrasound assisted extraction. The method was optimized by applying a response surface methodology using the NaDES Bet/La/W (1:2:2.5). Three independent variables, namely the extraction time, ultrasound power and NaDES-to-dry-ginger ratio, were investigated by employing a 17-run three-level Box–Behnken Design (BBD) in order to study the correlation between the extraction conditions and the quality of the obtained extracts. The optimum conditions (in order to achieve simultaneously maximum total phenolic content and antioxidant activity), were found to be 23.8 min extraction time, 60 Watt and NaDES/ginger 25:1 w/w. In the optimum conditions the DPPH radical scavenging ability of the extracts was found to reach IC50 = 18.16 mg/mL after 120 min, whereas the TPC was 20.10 ± 0.26 mg GAE/g of dry ginger. The green methodology was also compared with the extraction using conventional solvents. All the obtained extracts were evaluated for their antioxidant activity and their total phenolic content, while the extract derived by the optimum extraction conditions was further investigated for its ability to bind to calf thymus DNA (ctDNA).

scholarly journals Assessment of Total Phenolic Content and Antioxidant Activity Potential of Clementine Extract Obtained by Microwave Assisted Extraction Method

2021 ◽  
Vol 18 (4) ◽  
pp. 779-785
Author(s):  
Hanane Azzouzi ◽  
Loubna Elhajji ◽  
Mouad Achchoub ◽  
Mohammed Benbati ◽  
Kaoutar El-Fazazi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Extraction Method ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Major Interest ◽  
Pharmaceutical Industries

Citrus peels are known as rich source of bioactive compounds. Therefore, the establishment of an appropriate and innovative extraction method is a major interest to the food processing industry. The aim of this work is to assess the total phenolic content (TPC) and antioxidant activity (AA) of peels extracts prepared from five Moroccan clementine varieties. Extracts were prepared with microwave-assisted extraction (MAE) technique using acetone and methanol solvents. The evaluation of the antioxidant activity was performed by DPPH and ABTS- free radical scavenging. The extraction conditions had significant effects on total phenolic content (TPC) and antioxidant activity (AA). In fact, the highest TPC amount of clementine varieties (730.850±0.004mg GAE/100g DM) was obtained with acetone solvent for the Sidi Aissa variety. Regarding antioxidant activity, results with DPPH method showed an important antiradical and antioxidant activities for Sidi Aissa variety with methanol solvent (46.30± 1.01%) . However, ABTS method showed a good antioxidant activity for Ain Taoujdat with methanol solvent (3.02 mg/100g DM). This work provided to study the biochemical quality of Moroccan clementine extracts obtained by two microwave-assisted extraction processes in order to investigate further industrial potential uses in agro-food and pharmaceutical industries

LC-DAD-ESI-MS/MS, total phenolic content, and antioxidant activity of Firmiana simplex

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
MA Ghareeb ◽  
T Mohamed ◽  
AM Saad ◽  
LA Refahy ◽  
MA Sobeh ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Esi Ms

EXTRACTION OPTIMIZATION AND ANTIOXIDANT ACTIVITY OF PHENOLIC COMPOUNDS FROM AVOCADO PEEL

2019 ◽  
pp. 49-59
Author(s):  
Nu Linh Giang Ton ◽  
Thi Hoai Nguyen ◽  
Quoc Hung Vo
Keyword(s):  
Antioxidant Activity ◽  
Response Surface Methodology ◽  
Antioxidant Capacity ◽  
Response Surface ◽  
Total Antioxidant Capacity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Quadratic Model ◽  
Total Phenolic ◽  
Total Antioxidant

Avocado peel has been considered as a potential source of natural antioxidants in which phenolics are among the most important compounds. Therefore, this study aims to optimize the extraction process of phenolics using response surface methodology and evaluate the corresponding antioxidant activity. From the quadratic model, the optimal condition was determined including the ethanol concentration 54.55% (v/v), the solvent/solute ratio 71.82/1 (mL/g), temperature 53.03 oC and extraction time 99.09 min. The total phenolic content and the total antioxidant capacity at this condition with minor modifications were 26,74 ± 0,04 (mg GAE/g DW) and 188.06 ± 1.41 (mg AAE/g DW), respectively. The significant correlation between total phenolic content and total antioxidant capacity was also confirmed. Key words: response surface methodology, central composite rotatable design, total phenolic content, total antioxidant capacity, avocado peel

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