scholarly journals Determination of the antioxidant activity and polyphenol content of different types of Rhus coriaria Linn (sumac) from different regions

2017 ◽  
Vol 76 (OCE4) ◽  
Author(s):  
N. Soleymani Majd ◽  
S. Coe ◽  
S. Thondre ◽  
H. Lightowler
Keyword(s):  
Antioxidant Activity ◽  
Polyphenol Content ◽  
Different Types ◽  
Rhus Coriaria

Determination of volatiles, antioxidant activity, and polyphenol content in the postharvest waste of Ocimum basilicum L

2021 ◽  
pp. 131692
Author(s):  
Engy Mahmoud ◽  
Małgorzata Starowicz ◽  
Ewa Ciska ◽  
Joanna Topolska ◽  
Amr Farouk
Keyword(s):  
Antioxidant Activity ◽  
Ocimum Basilicum ◽  
Polyphenol Content

scholarly journals Phytochemical Content and Antioxidant Activity of Ancient Majorca and Carosella (Triticum aestivum L.) Wheat Flours

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1217
Author(s):  
Mariangela Marrelli ◽  
Pasqualina Sprovieri ◽  
Filomena Conforti ◽  
Giancarlo Statti
Keyword(s):  
Antioxidant Activity ◽  
Triticum Aestivum ◽  
Biological Activities ◽  
Triticum Aestivum L ◽  
High Concentration ◽  
Polyphenol Content ◽  
Wheat Varieties ◽  
Phytochemical Content ◽  
Whole Wheat ◽  
Different Types

Two locally grown ancient wheat varieties named Carosella and Majorca (Triticum aestivum L.) were studied for their phytochemical contents and biological activities. Four different types of flour obtained from each variety were investigated. Carosella and Majorca samples showed high concentration of polyphenol content and high antioxidant activity. Among the different types of flour obtained by different grindings (whole wheat, 2, 1, and 0), whole wheat showed the highest antioxidant activity expressed as inhibition of DPPH radical, with an IC50 value of 0.008 mg/mL for Carosella and 0.011 mg/mL for Majorca. The total polyphenol content ranged from 11.72 to 14.34 g/kg in Carosella samples and from 11.96 to 13.67 g/kg in Majorca samples. The results of this study reveal that the two wheat varieties, Carosella and Majorca, could be considered potential sources of antioxidant agent and could play a major role in human health.

scholarly journals Determination of Polyphenol Content in Sawo Fruit (Manilkara zapota) Based on Geographical Location

2021 ◽  
Vol 5 (3) ◽  
pp. 239-244
Author(s):  
Harni Sartika Kamaruddin ◽  
Angriani Angriani ◽  
Carla Wulandari Sabandar
Keyword(s):  
Antioxidant Activity ◽  
Sea Level ◽  
Methanol Extract ◽  
Geographical Location ◽  
Antioxidant Compounds ◽  
Polyphenol Content ◽  
Manilkara Zapota ◽  
Growth Difference ◽  
Uv Visible

Background: Sawo fruit (Manilkara zapota (L.) P.Royen) is rich in antioxidant compounds like polyphenols, and has long been used to treat diarrhea and thypoid by natives of Toari and Langori villages of Kolaka district of Southeast Sulawesi Province. Both villages located at different geographical location according to their altitudes from the sea level. The polyphenols content of sawo fruit from these villages that has a correlation with its antioxidant activity has yet investigated and thus need more research. Objective: This study was aimed to determine the content of polyphenols in sawo fruit based on geographical growth difference, that are Toari and Langori villages. Material and Methods: The fruits were collected from two locations of the Kolaka district that are Langori and Toari villages. The polyphenols content in the methanol extract of Sawo fruit was determined qualitatively using FeCl3 and quantitatively using the Folin-Ciocalteu reagent measured by UV-Visible spectrophotometry. Gallic acid was used as the standard polyphenol of the assay. Results: The polyphenols content of sawo fruit from Langori found to be 1.48113 mg/g, while fruits from Toari contained 1.55747 mg/g of polyphenolics. Conclusion: The study showed that there was an influence of the geographical growth on the content of polyphenolics of sawo fruits.

scholarly journals The Rhythmic Growth Pattern of Microbes is Antithetical to Antioxidant Activity of Kombucha: A New Finding in Food Biochemistry

2021 ◽  
pp. 1-7
Author(s):  
Soumya Majumder ◽  
Arindam Ghosh ◽  
Sourav Chakraborty ◽  
Malay Bhattacharya
Keyword(s):  
Antioxidant Activity ◽  
Growth Pattern ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Food Science ◽  
Different Types ◽  
New Finding ◽  
Free Radical Scavenging Assay ◽  
Rhythmic Growth

Background: Kombucha is a traditional, popular and probiotic health drink having strong antioxidant properties. Involvement of various bacteria and yeasts in kombucha fermentation have been previously described by several scientists. In this research, we aimed to determine the growth pattern of microbes involved in kombucha fermentation, using the orthodox turbidimetric method and a simultaneous determination of antioxidant activity regularly. Methods: This experiment was designed in a simple way to evaluate the interrelation between growth of microbes involved in kombucha fermentation and the rate of release of antioxidant molecules using spectrophotometric growth study and DPPH free radical scavenging assay. Results: In this research, some new characteristics of kombucha have been found regarding microbial fermentation. Moreover, we prepared broths using different types of sugars as carbon source for a comparative analysis. Significance: In all the broths, it was found that there is a negative correlation between rhythmic microbial growth pattern and antioxidant activity which is definitely a new finding in food science.

RP-HPLC-DAD determination of the differences in the polyphenol content of Fucus vesiculosus extracts with similar antioxidant activity

2021 ◽  
Vol 1184 ◽  
pp. 122978
Author(s):  
Desirée Sánchez-Bonet ◽  
Samanta García-Oms ◽  
Mariola Belda-Antolí ◽  
Carolina Padrón-Sanz ◽  
José Miguel Lloris-Carsi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Fucus Vesiculosus ◽  
Polyphenol Content ◽  
Rp Hplc

scholarly journals Antioxidant Acitivity in Various Processed Products of Inferior Local Tubers (Dioscorea sp. L.)

2017 ◽  
Vol 3 (5) ◽  
pp. 35
Author(s):  
Ari Yuniastuti ◽  
Retno Sri Iswari ◽  
R. Susanti
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Antioxidant Activities ◽  
Different Types ◽  
Processed Products ◽  
Wild Yam

<p>Inferior local tubers such as lesser yam, wild yam and arrowroot contain bioactive compounds such as phenols and diosgenin which act as antioxidants.  Antioxidant activities in the processed of local tubers have not been reported. The aim of this research was to identify the antioxidant activity of local tubers (inferior) that has been processed through the process of steaming, frying and milling to be flour. The determination of antioxidant activity was performed using α, α, Diphenyl Picryl Hydrazil (DPPH), which is indicated as a percentage of the apprehension of radical activities by the amount of absorbance at 680 nm. The antioxidant activity of lesser yam steamed, fried and milled were 2.26 %, 0.84 %, and 3.34 % respectively. The antioxidant activity of steamed, fried and milled arrowroot were 1.44 %, 0.65 %, and 1.32 % respectively. Moreover, the antioxidant activity of steamed, fried and milled wild yam were 1.08 %, 0.08 %, and 0.82 % respectively. The antioxidant activity of inferior local tubers have decreased in different types of processing. The highest antioxidant activity was in the milled tubers followed by steamed and fried tuber. </p>

scholarly journals Secondary Metabolites Identification and Antioxidant Activity Determination of Crude Extract of Barringtonia asiatica l. (kurz) Leaves

2021 ◽  
pp. 51-58
Author(s):  
Rega Permana ◽  
Aulia Andhikawati
Keyword(s):  
Antioxidant Activity ◽  
Methanol Extract ◽  
Geographic Region ◽  
Activity Profile ◽  
West Java ◽  
Inhibition Concentration ◽  
Ic50 Value ◽  
Different Types ◽  
Phytochemical Constituent

Aims: The aims of this study were to elucidate the pythochemical compounds from the leaf of mangrove (Barringtonia asiatica L. (Kurz) colleceted from the coast of Pangandaran Regency, West Java, Indonesia as well as its antioxidant activity profile. Study Design: The study was designed experimentally with two replication (duplo) for the extraction preparation and analyzed statistically using regression linear for the determination of Inhibition Concentration at 50% or IC50. Place and Duration of Study: Sample were collected from the mangrove ecotourism site at Pangandaran Regency, West Java, Indonesia. The experimental study was performed at the Tropical Marine and Fisheries Laboratory, Fisheries Department, PSDKU Padjadjaran University, Indonesia. Methodology: The identification of pythochemical contents of the leaf was carried out qualitatively with the principle of formation of precipitate, color and foam. The extraction was performed accordingly using three different types of solvent, n-hexane, ethyl acetate and methanol. Lastly, the antioxidant activity was tested using DPPH (1,-diphenyl-2-picrylhydrazyl) method and IC50 were analyzed subsequently. Results: Based on the results of the research that has been carried out, it can be concluded that the leaves of Barringtonia asiatica L. (Kurz) contain bioactive compounds in the form of tannins and saponins. The methanol extract of Barringtonia asiatica L. (Kurz)  was proven to have moderate strength antioxidant activity with IC50 value of 125.87 ppm. Conclusion: this results concluded that different geographic region can influence the phytochemical constituent of the of Barringtonia asiatica L. (Kurz). Furthermore, this doesn’t hindered its antioxidant activity potential as it still proven to have a relatively medium antioxidant activity.

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