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Comparison Of Phenolic Compounds And Antioxidant Capacities Of Traditional Sorghum Beers With Other Alcoholic Beverages, Fatouma Abdoul-Latif, Romaric G. Bayili, Louis C. Obame, Mamoudou H. Dicko Prof. Oct 2012

Comparison Of Phenolic Compounds And Antioxidant Capacities Of Traditional Sorghum Beers With Other Alcoholic Beverages, Fatouma Abdoul-Latif, Romaric G. Bayili, Louis C. Obame, Mamoudou H. Dicko Prof.

Pr. Mamoudou H. DICKO, PhD

Thirty samples of sorghum beers “dolo” were selected from traditionally fermented household manufacturers from Burkina Faso. Dolo samples were screened for their total phenolic content, proanthocyanidins and putative antioxidant capacities, and were compared with industrial beers and wines. Total phenols were measured using the Folin-Ciocalteu method. Proanthocyanidins content were determined by the method of HCl-butanol hydrolysis. Antioxidant activities were evaluated both with 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay and by the trolox equivalent antioxidant capacity (TEAC) using 2,2’-azinobis(3-ethyl-benzothiazoline-6-sulfonic acid radical) (ABTS•+). The average contents of total phenols and proanthocyanidins were 506 μg GAE/ml of dolo and 45 μg APE/ml of dolo, respectively. An …


Comparison Of Peroxidase Activities From Allium Sativum, Ipomoea Batatas, Raphanus Sativus And Sorghum Bicolor Grown In Burkina Faso, Mamounta Diao, Oumou H. Kone, Nafissétou Ouedraogo, Romaric G. Bayili, Mamoudou H. Dicko Prof. Apr 2011

Comparison Of Peroxidase Activities From Allium Sativum, Ipomoea Batatas, Raphanus Sativus And Sorghum Bicolor Grown In Burkina Faso, Mamounta Diao, Oumou H. Kone, Nafissétou Ouedraogo, Romaric G. Bayili, Mamoudou H. Dicko Prof.

Pr. Mamoudou H. DICKO, PhD

Current applications of peroxidase in various areas of biotechnology and clinical biochemistry show the interest for further screening for peroxidase. Thus, peroxidase activities were screened in higher plants such as Allium sativum, Ipomoea batatas, Raphanus sativus and Sorghum bicolor grown in a tropical environment. The enzymes were investigated for their specific activities and best physicochemical conditions for activity and stabilities. Optima conditions with respect to pH, temperature and their heat inactivation were determined by monitoring the hydrogen peroxide-dependant oxidation of guaiacol. Results revealed that peroxidase specific activities in R. sativus were higher than the other three plant species. Optimum pHs …