Antioxidant Activity Increase in Heating Oilseed Protein Ingredients with Glucose1

1982 ◽  
Vol 45 (5) ◽  
pp. 452-454 ◽  
Author(s):  
KI SOON RHEE ◽  
KHEE CHOON RHEE
Keyword(s):  
Antioxidant Activity ◽  
Food Systems ◽  
Heating Time ◽  
Reducing Sugar ◽  
Model Systems ◽  
Oilseed Protein ◽  
Activity Increase ◽  
Rate Of Increase ◽  
Nonenzymatic Browning ◽  
Ethanolic Extracts

Protein ingredients prepared from glandless cottonseed, peanut and soybean show varying degrees of antioxidative effectiveness in model systems and in food systems. This paper presents data showing that nonenzymatic browning between oilseed protein ingredients and a reducing sugar can enhance the antioxidant value of oilseed ingredients. Defatted flours and protein isolates of the oilseeds were mixed with glucose in a ratio of 1:1 by weight and heated at 100 C for 2 and 6 h. Antioxidant activity of ethanolic extracts of the mixtures was determined against autoxidation of safflower oil. Antioxidant activity of the mixtures increased with heating time, as did the extent of nonenzymatic browning. The rate of increase in antioxidant activity was greater for mixtures having lower endogenous (0 h) antioxidant activity.

Antioxidant Activity of Polyphenolic Rich M oringa oleifera  Lam. Extracts in Food Systems

2015 ◽  
Vol 39 (6) ◽  
pp. 733-741 ◽  
Author(s):  
Keerti Bholah ◽  
Deena Ramful-Baboolall ◽  
Vidushi S. Neergheen-Bhujun
Keyword(s):  
Antioxidant Activity ◽  
Food Systems

scholarly journals Utero-relaxing and anti-free-radical effects of hydro-ethanolic extracts of Desmodium ramosissimum in the wistar female rats

2021 ◽  
Vol 2 ◽  
pp. 6
Author(s):  
Hèzouwè Madjalani ◽  
Kossi Metowogo ◽  
Tcha Pakoussi ◽  
Aklesso Nabede ◽  
Essodjolon Kanabiya ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Medicinal Plants ◽  
Rural Areas ◽  
Public Health Problem ◽  
Stem Bark ◽  
Sub Saharan Africa ◽  
Female Rats ◽  
Phenolic Constituents ◽  
Ethanolic Extracts

Objectives: In sub-Saharan Africa, the therapeutic use of medicinal plants is of arousing interest. Reproductive disorders are a public health problem like everywhere else in the world. The population, especially in rural areas, uses medicinal plants for their beneficial effects. In Africa, the population uses these medicinal plants for their healthcare, including solving problems related to childbirth where there is an increase in the number of women known as “traditional birth attendants.” The effects of its medicinal plants relate to the various reproductive processes in women, from pregnancy to induction of labor, elimination of placental retention, and management of postpartum hemorrhage. To contribute to the enhancement of medicinal plants traditionally used in reproductive healthcare in Togo and to make information on their pharmacological effects available to the population, this work focused on the evaluation utero-relaxing and anti-free radical effects of extracts of Desmodium ramosissimum in the female rats of the Wistar strain. Material and Methods: The effects of hydro-ethanolic extracts of leaves, stem barks, and roots of D.ramosissimum were then tested on shreds Myometer of the female rats mounted in an organ vat and the antioxidant activity of these extracts tested was then determined. Results: The results show that hydro-ethanolic extracts from leaves, stem bark, and roots of D.ramosissimum cause a reduction in the frequency of spontaneous contractions of the uterine muscle. This reduction shows that these extracts have relaxing effects on the contraction of this muscle. The leaves extract showed better antioxidant activity compared to other extracts. Conclusion: This antioxidant activity is probably due to the phenolic constituents and its metabolites would be partly responsible for the pharmacological activities of D.ramosissimum. D.ramosissimum could thus be used to reduce uterine contractions in order to avoid Threats of Premature Labor.

scholarly journals Evaluation of the Antioxidant Activity of Ethanolic Extracts of Some Varieties of Onions

2014 ◽  
Vol 03 (02) ◽  
pp. 26-34
Author(s):  
María del Carmen Gutierrez ◽  
Patricia Della Rocca ◽  
Elizabeth De Seta ◽  
Fernando Reina
Keyword(s):  
Antioxidant Activity ◽  
Ethanolic Extracts

scholarly journals Prunus persica var. platycarpa (Tabacchiera Peach): Bioactive Compounds and Antioxidant Activity of Pulp, Peel and Seed Ethanolic Extracts

2015 ◽  
Vol 70 (3) ◽  
pp. 331-337 ◽  
Author(s):  
Monica R. Loizzo ◽  
Deborah Pacetti ◽  
Paolo Lucci ◽  
Oscar Núñez ◽  
Francesco Menichini ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Prunus Persica ◽  
Ethanolic Extracts

Mycochemical composition and antioxidant potential of Macrolepiota africana (Heim) Heinem. (Agaricaceae), an edible mushroom from Gabon

2021 ◽  
Vol 2 (1) ◽  
pp. 028-033
Author(s):  
Hugues Calixte Eyi Ndong ◽  
André Ledoux Njouonkou
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Activity Index ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Edible Mushroom ◽  
Mushroom Species ◽  
Chemical Screening ◽  
Ethanolic Extracts ◽  
Pharmacological Potential

Macrolepiota africana is a fungus used as food in Gabon for its culinary properties. However, its nutritional value, mycochemical contents, antioxidant properties and health potential still unknown. The present study investigated the phytochemicals and antioxidant properties of this mushroom species. This chemical screening was followed by a study of the antioxidant activity and a prediction of additional pharmacological activities of M. africana. Using standard methodology, the mycochemical analyses were carried out on aqueous, hydro-ethanolic and ethanolic fungi extracts. The antioxidant activity of the mushroom extracts was determined using DPPH radical scavenging assay. Apart from Digitoxigenine, flavonol and gitoxigenine that were not found in any of the extracts, all other tested mycochemical were found in atleast one of the extracts. Alkaloids, flavonoids, polyphenols, oses and holosides, proanthocyanidins and coumarins were found in all extracts at different intensity. Saponosids, sterols and triterpenes, tannins gallics, reducing sugar, anthracenosides and digitoxine were found in two extracts while tannins catechics, flavone and gitoxine were detected only in one extract. The dosage of phenolic compounds confirmed the richness of this fungus in total polyphenols, its moderate richness in proanthocyanidins, the lack of flavonoids in the aqueous extract and the moderate richness of the hydro-ethanolic and ethanolic extracts in flavonoids. Regarding the antioxidant activities, the results obtained for the DPPH trapping test showed that the different extracts had low to moderate antioxidant activity with antioxidant activity index (IAA) ranged 0.29 to 0.97 respectively in aqueous and ethanolic extracts. The presence of these mycochemical compounds along with the identified antioxidant activities shows that this M. africana have some pharmacological potential.

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