Total Phenol Content, Antioxidant Activities and α-Glucosidase Inhibition of Sesame Cake Extracts

This study was designed to determine the polyphenolic contents of Eucommia ulmoicles Oliv leaf extracts and evaluate their antioxidant activities in vitro. All the extracts were evaluated for their radical scavenging activity by the DPPH method and their oxidative-retarding efficiency in vegetable oils. It was observed that the highest values were found in 70% MeOH extracts for total phenolic content as gallic acid. A good correlation between antioxidant activity and total phenol content in the extracts was found. The extraction yield, total phenol content and radical scavenging activity were increased and peroxide formation in vegetable oils were decreased with the graded solvent concentration of MeOH. The phenolic compound yield ranged from 2.45 to 11.35% and the total phenol content increased from 34.51 mg/g to 47.68 mg/g. DPPH scavenging activity increased from 56.32% to 90.37% as MeOH concentration increased. Compared to the control (70.45 meq/kg), 70% MeOH fraction with 47.68 mg/g phenolic compounds shows much stronger antioxidant ability (30.12 meq/kg) in vegetable oil system.

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Comparative Analysis of the Nutritional Components and Antioxidant Activities of Different Brassica juncea Cultivars

Foods ◽

10.3390/foods9060840 ◽

2020 ◽

Vol 9 (6) ◽

pp. 840

Author(s):

Hee-Yeon Kwon ◽

Sun-Il Choi ◽

Hye-In Park ◽

Seung-Hyun Choi ◽

Wan-Sup Sim ◽

...

Keyword(s):

Brassica Juncea ◽

High Performance ◽

Antioxidant Activities ◽

Radical Scavenging ◽

Total Phenol ◽

Total Phenol Content ◽

Phenol Content ◽

Crude Lipid ◽

Antioxidant Power ◽

Nutritional Components

The purpose of this study was to compare the nutritional components and antioxidant activities of two different cultivars of Brassica juncea (Dolsan, Yeosu, Korea (BJD) and (Jeongseon, Gangwon, Korea (BJJ)). We investigated the proximate composition (moisture, crude ash, crude protein and crude lipid), antioxidant activities (2,2-Diphenyl-2-picrylhydrazil (DPPH) scavenging activity and ferric reducing antioxidant power (FRAP)), total phenol content, total flavonoid content and sinigrin content by high-performance liquid chromatography analysis. Our results show that the proximate compositions of BJD and BJJ were not significantly different. However, both the DPPH radical scavenging and FRAP activities of the BJJ extracts were higher than those of the BJD extracts. The total phenol contents of the BJD and BJJ extracts were 6.56 and 9.80 mg gallic acid equivalent/g, respectively. The total flavonoids content of the BJD and BJJ extracts were 20.92 and 34.81 mg rutin equivalent/g, respectively, whereas the sinigrin contents, one of the major compounds in BJD and BJJ extracts, were 16.16 mg/g and 11.73 mg/g, respectively. In this study, we confirmed that, by comparing BJJ and BJD, the sinigrin content of BJD was higher than that of BJJ, but the antioxidant activity and phenol content of BJD were superior to that of BJJ.

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The potential of Endophytic Fungal Extract Isolated from Cinnamon (Cinnamomum burmannii) as Antidiabetic and Antioxidant

Jurnal Kimia Sains dan Aplikasi ◽

10.14710/jksa.22.6.275-282 ◽

2019 ◽

Vol 22 (6) ◽

pp. 275-282 ◽

Cited By ~ 1

Author(s):

Eris Septiana ◽

Fauzy Rachman ◽

Yatri Hapsari ◽

Yadi Yadi ◽

Bustanussalam Bustanussalam ◽

...

Keyword(s):

Antioxidant Activity ◽

Endophytic Fungi ◽

Antioxidant Activities ◽

Radical Scavenging ◽

Total Phenol ◽

Antidiabetic Activity ◽

Total Phenol Content ◽

Phenol Content ◽

Fungal Extract ◽

Glucose Levels

An increase in blood glucose levels in people with diabetes can cause an increase in free radicals, which can worsen the disease. Thus, drugs that have antidiabetic and antioxidant activities are needed. The cinnamon plant is high in antioxidants and has long been used as a source for a diabetes drug. The utilization of endophytic fungi isolated from cinnamon plants as antidiabetic and antioxidant has never been reported. This study aims to investigate the antidiabetic as well as antioxidant activity from the extract of endophytic fungi from the cinnamon plant. The antidiabetic activity was tested using the α-glucosidase enzyme inhibition method, while antioxidant activity was tested using the DPPH free radical scavenging method. Total phenol content was measured based on the Follin-Ciocalteu reagent reaction. All endophytic fungal extracts from the cinnamon leaves, twigs, flowers, and fruit have antidiabetic and antioxidant activity as well as high total phenol content. The three parameters measured showed a positive correlation. Endophytic fungal extract of Cb.D6 isolate derived from the leaf had the highest antidiabetic and antioxidant activity among the other isolates amounting to 92.41% and 90.28%, respectively. In addition, the total phenol content of Cb.D6 isolates was also the highest with 357.83 mg equivalent to gallic acid/g extract. Therefore, the endophytic fungal extract of Cb.D6 isolate has the potential to be developed as a source of the antidiabetic and antioxidant ingredients.

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Antioxidant activities and total phenol content of Inula viscosa extracts selected from three regions of Morocco

Asian Pacific Journal of Tropical Biomedicine ◽

10.1016/s2221-1691(15)30010-1 ◽

2015 ◽

Vol 5 (3) ◽

pp. 228-233 ◽

Cited By ~ 19

Author(s):

Naima Chahmi ◽

Jaouad Anissi ◽

Sanae Jennan ◽

Abdellah Farah ◽

Khalid Sendide ◽

...

Keyword(s):

Antioxidant Activities ◽

Total Phenol ◽

Total Phenol Content ◽

Phenol Content

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ANTIOXIDANT ACTIVITY AND TOTAL PHENOL CONTENT OF DIFFERENT PLANT PARTS OF LEBANESE ANNONA SQUAMOSA LINN.

International Journal of Pharmacy and Pharmaceutical Sciences ◽

10.22159/ijpps.2020v12i8.36992 ◽

2020 ◽

pp. 100-105

Author(s):

FARAH IBRAHIM ◽

ALI JABER ◽

GHASSAN IBRAHIM ◽

EDMOND CHEBLE

Keyword(s):

Antioxidant Activity ◽

Antioxidant Activities ◽

Antioxidant Properties ◽

Total Phenol ◽

Free Radical Scavengers ◽

Total Phenol Content ◽

Phenol Content ◽

Annona Squamosa ◽

Plant Parts ◽

Ethanolic Extracts

Objective: The aim of this work was to characterize the antioxidant properties and to evaluate the total phenol content of leaves, bark, pericarp, and pulp extracts of Lebanese Annona squamosa Linn. (A. squamosa),, as well as a total screening of secondary metabolites present in the various plant parts studied. Methods: Two solvent systems were used for extraction: ethanol 80 % and methanol 80 %. The antioxidant activity of different extracts was investigated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The Total Phenol Content (TPC) of the different plant parts are determined and compared via Folin-Ciocalteu method. The results were presented as the mean of three separate experiments and error bars were used to illustrate standard deviation. Results: The phenolic content was found to be highest in the A. squamosa leaves methanolic and ethanolic extracts (117.2 mg and 112.92 gallic acid extract/g, respectively). The results showed that A. squamosa leaves methanolic and ethanolic extracts display the highest antioxidant activities than the bark, pulp and pericarp extracts, with half-maximal inhibitory concentration values 13.61 and 15.97 μg. ml-1 respectively. Ethanol 80 % and methanol 80 % were found to be efficient for the extraction of phenolic compounds. Conclusion: Results of this study indicate the presence of promising compounds in Lebanese A. squamosa that are able to act as antioxidants and free radical scavengers.

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AKTIVITAS ANTIOKSIDAN DAN SIFAT SENSORIS TEH CELUP CAMPURAN BUNGA KECOMBRANG, DAUN MINT DAN DAUN STEVIA.

Jurnal Pangan dan Gizi ◽

10.26714/jpg.9.2.2019.79-93 ◽

2019 ◽

Vol 9 (2) ◽

pp. 79

Author(s):

Katrien Arumsari ◽

Siti Aminah ◽

Nurrahman Nurrahman

Keyword(s):

Antioxidant Activity ◽

Antioxidant Activities ◽

Total Phenol ◽

Total Phenol Content ◽

Phenol Content ◽

Sensory Testing ◽

Sensory Characteristic ◽

Alternative Ingredients ◽

Functional Drink

Tea is a functional drink that widely used and developed for health purposes. The alternative ingredients for tea making are from plants such as flowers, leaves, skin, fruit, and roots. Teabags,which made from kecombrang flower, mint leaves, and stevia leaves, potentially used as functional drinks,considering the total phenol content and antioxidant activity in each ingredients. The aims of this research is to obtain tea products which contain high total phenol and antioxidant activity with optimum acceptability from kecombrang flower and mint leaves formulations. This study uses a randomized 1:1 ratio design of kecombrang flower : mint leaves, with 5 formulation:(0.4: 1.6), (0.7: 1.3), (1: 1), (1.3: 0.7) and (1.6: 0.4), to obtain the datas of Total Phenol Levels, Antioxidant Activities and Sensory characteristic of the tea. The results shows that there is significant effect on total phenol content and antioxidant activity. It results that F1 formulation has the highest amount of total phenol which is 13.907 mg as.galat / 100 mL as well as the highest antioxidant activity which is 68.84% RSA. Sensory testing produces teas with a similar color, while the taste and scent are significantly different

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Antioxidant characterization of apricot (Prunus armeniaca L.) cultivars and hybrids

International Journal of Horticultural Science ◽

10.31421/ijhs/11/4/604 ◽

2005 ◽

Vol 11 (4) ◽

Author(s):

É. Stefanovits-Bányai ◽

R. Engel ◽

R. Herman ◽

A. Blazovics ◽

A. Hegedűs

Keyword(s):

Antioxidant Capacity ◽

Antioxidant Activities ◽

Antioxidant Properties ◽

Prunus Armeniaca ◽

Total Phenol ◽

Total Phenol Content ◽

Phenol Content ◽

Long Term Study ◽

Reducing Ability ◽

Prunus Armeniaca L

This report forms a part in our long-term study dedicated to reveal the antioxidant properties of apricot fruits through several years. Nineteen apricot cultivars and 8 hybrids were comparatively analysed. Total phenol content and antioxidant activity showed a good correlation. The tested cultivars and hybrids could be arranged in three groups representing different antioxidant activities, 12 entries were involved in the group with relatively low antioxidant capacity (FRAP value < 1500 mmol/L); 10 accessions were classified in the group with medium antioxidant capacity (1500 mmol/L < FRAP value < 3000 mmol/L); and 5 genotypes were grouped to the category of high antioxidant value (FRAP > 3000 mmol/L). `Morden 604' produced a surpassingly outstanding antioxidant character. H-donating ability has further supported our results. Phenolic substances were accumulated and ferric reducing ability was increased in the ripe fruits compared to the unripe ones. High levels of variations in the total phenol content and antioxidant capacity in of apricot fruits were revealed in this study. Environment, year or rootstocks may also influence the antioxidant properties of fruits. however it seems to be convincing that crossing parents with outstanding antioxidant character can produce hybrids with higher antioxidant capacity. Hungarian apricots are widely appreciated for their premium flavour and — as it was evidenced in this study — for their relatively good antioxidant properties. However, delicious fruits should be made functional foods having beneficial health effects through accumulating large amounts of antioxidant molecules in the fruit flesh.

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