Chemical Characterization and Anti-Radical Activity of Fruits and Vegetables Commonly Consumed in Brazzaville

Abstract

The objective of this study was to analyze ten (10) species of edible vegetables and nine (9) fruit commonly found in Congo (Brazzaville) in order to determine their total polyphenol content (TPC) and total flavonoid content (TFC), and their antiradical activity by the method of 1,1-diphenyl-2-picrylhydrazyl (DPPH). The results obtained showed that the highest TPC and TFC were found, on the one hand, in the extracts of four species of vegetables, i.e. Ipomoea batatas L. (536.02 ± 0.01 mg of GAE/100 g DW; 486.46 ± 0.10 mg of QtE/100 g DW), Cucurbita pepo (533.60 ± 0.05 mg of GAE/100 g DW; 303.72 ± 0 mg of QtE/100 g DW), Hibiscus sabdariffa (421.02 ± 0.015 mg of GAE/100 g DW; 243.49 ± 0.10 mg of QtE/100 g DW), Solanum negrum 1 (412.10 ± 0.05 mg of GAE/100 g DW; 292.10 ± 0.14 mg of QtE/100 g of DW) and, on the other hand, in the extracts of two species of fruit, i.e. Chrysophyllum lacourtianum (532.79 ± 0.19 mg of GAE/100 g of DW; 380.55 ± 0.10 mg of QtE/100 g of DW) and seeds of Aframomum alboviolaceum (469.38 ± 0.28 mg of GAE/100 g DW; 107.27 ± 0.10 mg of QtE/100 g DW). The lowest TPC and TFC were obtained with the extracts of Brassica campestris and of Spinacia oleracea, respectively 97.78 ± 0.17 GAE mg/100 g DW and 27.52 ± 0.10 QtE mg/100 g DW. The extract of the Saba senegalensis pulp had the lowest TPC and TFC. In addition, the highest antiradical activity was observed with extracts from vegetables and fruit with high TPC and TFC. The results indicate that these vegetables and fruit could be potential sources of the phenolic compounds and the biomolecules having several biological ac

Nutritional and Antioxidant Evaluation and Effect of Eggplant Consumption on Anthropometric and Hematologic Parameters in Wistar Rats

“…(2020) [26] in leaves of Solanum nigrum L., our results are far superior to those found by these authors for green eggplant and close to those for purple eggplant. These differences could be explained by the reaction conditions (time, antioxidant/DPPH-ratio, type of solvent, pH) and phenolic profile [27].…”

Oecophylla Smaragdina (Hymenoptera: Formacidae) and Odontotermes sp. (Isoptera: Termitidae) a Potential Source of Antioxodant: The Two Most Preferred Edible Insects of Arunachal Pradesh, India

“…These values (Fig, 2), except for termite, are higher than or similar to most of the fruits and vegetable with few exception. [25] Nevertheless, with the value 58.0, avonoid content in termite is higher than vegetables like Amaranthus, S.nigram, B.campestris S. oleracea (values between 27.52 to 59.70) and fruits (A. gigantum, A. muricata, A. gensis, A. alboviolaceum, F. capensis, values between 23.36 to 36.86) reported by Tsiba et al [22].…”

“…Phenolic compounds are known to be powerful compounds with ability to reduce free radicals. [22] TFCS (Fig. 4) in the weaver ant adult was signi cantly (P<0.05) higher in adult (663.4) than its brood (387.2) while least was observed in the termite species (58.0 mg RTE/100g).…”

Oecophylla smaragdina (Hymenoptera: Formicidae) and Odontotermes sp. (Isoptera: Termitidae) a potential source of antioxidant: the two most preferred edible insects of Arunachal Pradesh, India

“…The strong inhibition of free radicals could be justified by the relatively high concentrations of phenolics and flavonoids quantified in this study. Phenolic compounds are known to be powerful compounds with the ability to reduce free radicals [25].…”

“…Fig.2Comparative accounts of DPPH • (IC 50 µg/mL) of O. smaragdina, Odontotermes sp., conventional food of plant origin (fruit and vegetables), common edible insects (Values other than those of O. smaragdina and Odontotermes sp., adapted from Zielinska et al[22], Chatsuwan et al[23], Islary et al[24], Tsiba et al[25] and Saiki et al[26] …”