Assessment of Nutritional Properties from Six Varieties of Onion (Allium cepa L., Alliaceae) Produced in Northern Côte d’Ivoire

Aims: Onion is a common vegetable engaging significant nutritional interests and widely consumed over the world. In Côte d'Ivoire, 95% of the onion consumption is filled by imports despite the availability of suitable areas for its local production. The current study aimed to investigate nutritional features of onion varieties for fitting the agronomical trends in order to strengthen the onion cultivation in northern Côte d’Ivoire. Study Design: Six onion varieties produced for bulbs, namely ARES, BATI, CARA, DAMANI, KARIBOU, and SAFARI. Onion bulbs sampled, oven-dried, and then processed to powders for analysis. The main study consisted in analyzing the biochemical properties of the resulted onions powders. Place and Duration of Study: Experimental farming from the plants experimenting location, and onion samples analyzed from Laboratory of Peleforo Gon Coulibaly University, Korhogo, Côte d’Ivoire, between March 2020 and April 2021. Methodology: Batches of 2 kg fresh bulbs collected per onion variety after harvest. Once at Lab, onion bulbs peeled, washed, cut into small dice-shaped pieces and dried into an oven at 80 °C for 24 h using stainless trays. Dried samples ground and kept for analyses regarding physicochemical traits (moisture, acidity, ash) and nutritive parameters (glucides, lipids, proteins, antioxidants). Results: The works showed higher contents in moisture (16.91%), ash (4.46%), and lipids (1.99%) from CARA variety with more significant acidity; while greatest amounts of total soluble carbohydrates (14.5%), tannins (1.02%), and proteins (13.6%) were recorded from BATI and more vitamin C in DAMANI (0.133%). However, SAFARI variety samples were more provided in reducing carbohydrates (1.04%) and total polyphenols (1.46%) as secondary metabolites; and the ARES variety revealed highest flavonoids contents (0.057%). In addition, ARES, CARA, and KARIBOU varieties displayed great dietary fibers amounts compared to BATI, KARIBOU, and SAFARI. Conclusion: The particular nutritional traits of the studied onion varieties could be confronted with their agronomical yield and consumption trends for supporting sustainable production of onion in Côte d’Ivoire.

Download Full-text

Activité antioxydante de quelques plantes utilisées dans la région de Tiassalé (Côte d’Ivoire) dans le maintien de la santé de la peau

European Scientific Journal ESJ ◽

10.19044/esj.2018.v14n30p338 ◽

2018 ◽

Vol 14 (30) ◽

pp. 338

Author(s):

Koffi Akessé Georges ◽

Ahoua Angora Remi Constant ◽

Ekou Lynda ◽

Ekou Tchirioua ◽

Kone Mamidou Witabouna

Keyword(s):

Antioxidant Activity ◽

Vitamin C ◽

Cote D'ivoire ◽

Côte D’Ivoire ◽

Aqueous Extracts ◽

Activité Antioxydante ◽

Total Polyphenols ◽

Cote D’Ivoire ◽

Côte D'ivoire

Skin health is a concern for many people. This aim of this study is to evaluate in vitro the antioxidant activity of 10 plants used in cosmetopoeia for the maintenance of skin health. To achieve this objective, 30 extracts were tested using 2,2'-diphenyl-1-picrylhydrazyl radical (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6) acid. -sulfonic) (ABTS + •) assays. The extracts studied were rich in total polyphenols, flavonoids, gallic tannins and alkaloids. For the DPPH reduction, 7 extracts including 5 methanolic and 2 aqueous extracts showed a percentage of inhibition similar to that of Vitamin C (95.79 ± 10.53%) used as a control. With ABTS, 11 extracts (5 methanol, 3 aqueous and 3 hexane) gave reduction percentages close to Trolox (95.97 ± 8.51%). These active plants could play a role in the maintaining of skin.

Download Full-text

Nutritional Potential of Two Maturity Stages of Eggplant Solanum aethiopicum "Striped Toga" Variety Harvested in Côte d’Ivoire

Asian Research Journal of Agriculture ◽

10.9734/arja/2021/v14i330125 ◽

2021 ◽

pp. 1-10

Author(s):

Dan Chépo Ghislaine ◽

Fagbohoun Jean Bedel ◽

Fankroma Martial

Keyword(s):

Cote D'ivoire ◽

Physicochemical Parameters ◽

Côte D’Ivoire ◽

Physicochemical Analysis ◽

Total Polyphenols ◽

Cote D’Ivoire ◽

Total Sugars ◽

Solanum Aethiopicum ◽

Côte D'ivoire ◽

Nutritional Potential

African eggplant Solanum aethiopicum var. striped toga is a vegetable-fruit widely consumed in Côte d'Ivoire. However, observations have shown that the cortex was removed from the pulp during culinary preparations for various reasons. The objective of this study is to contribute to the valorization of this eggplant by showing the nutritional interest of the cortex and the pulp. The samples used in this study were collected in a market garden located south of Abidjan. After separating the cortex from the pulp, they were ground into powder and used for physicochemical analysis. The results concerning physicochemical parameters showed that the ripe pulp (Pm) compared to the ripe cortex (Cm) contained more total sugars (165±0.7 versus 107±0.70 mg/100 g DM). Whereas, the unripe pulp Pnm contained significant amounts of polyphenols and tannins compared to the unripe cortex (636±0.25 versus 328±0.04 mg/100g DM for total polyphenols; 577±0.09 versus 171±0.21 mg/100 g DM for tannins). Oxalate contents decreased in ripe parts of the fruit (Pnm: 332±2.52 and Cnm: 131±1.00 mg/100g DM in unripe eggplant versus Pm: 157.75±1.52 and Cm: 55±0 .00 mg/100g DM in ripe eggplant). Also, Solanum aethiopicum var. striped toga could play an important role in human nutrition because of their nutrients content, thus contributing to better health.

Download Full-text

Physicochemical and Nutritional Properties of Varieties of Carrot (Daucus carota) grown in Region of Korhogo, North of Côte d’Ivoire

International Journal of Environment Agriculture and Biotechnology ◽

10.22161/ijeab/3.3.11 ◽

2018 ◽

Vol 3 (3) ◽

pp. 792-798

Author(s):

Coulibaly Lacina Fanlégué ◽

Touré Abdoulaye ◽

Siéné Laopé Ambroise Casimir ◽

Coulibaly Namongo Adama ◽

SORO Yadé Réné

Keyword(s):

Cote D'ivoire ◽

Daucus Carota ◽

Côte D’Ivoire ◽

Nutritional Properties ◽

Cote D’Ivoire ◽

Côte D'ivoire

Download Full-text

Antioxidant and Antimicrobial Activities of Various Extracts from Safou (Dacryodes edulis) Cultivated in Côte d’Ivoire

Microbiology Research Journal International ◽

10.9734/mrji/2021/v31i830336 ◽

2021 ◽

pp. 1-8

Author(s):

Andrée Emmanuelle Sika ◽

Romuald Léonce Kadji ◽

Lacinan Ouattara ◽

Soumaïla Dabonné ◽

Rose Koffi-Nevry

Keyword(s):

Moisture Content ◽

Cote D'ivoire ◽

Côte D’Ivoire ◽

Dpph Radical ◽

Total Polyphenols ◽

Cote D’Ivoire ◽

Methanolic Extracts ◽

Côte D'ivoire ◽

Study Laboratory ◽

Dacryodes Edulis

Safou (Dacryodes edulis) is a fruit with very interesting nutritional and pharmacological properties. However, this fruit remains rather unknown to the Ivorian population. Aims: The objective of this study was to highlight the antioxidant and antimicrobial potential of the seed and pulp of Safou (Dacryodes edulis) cultivated in Côte d'Ivoire for its valorization. Study Design: Microbiological and biochemical studies Place and Duration of Study: Laboratory of Biotechnology and Food Microbiology,Abidjan, Côte d’Ivoire, between September 2020 and February 2021. Methodology: Aqueous, ethanolic and methanolic extracts of the pulp and seed of Safou were prepared. Moisture content, pH, yield, total polyphenols,diphényl-2-picrylhydrazyle (DPPH) radical scavenging testof the different extracts were determined.Aqueous, ethanolicand methanolicextracts of the seed and pulp at varying concentrations of 200 mg/mL, 100 mg/mL, 50 mg/mL, 25 mg/mL, 12.5mg/mL and 6.25 mg/mL was tested against human pathogens such asEscherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiellapneumoniae, Proteus mirabilis, Aspergillus fumigatus and Penicilliumchrysogenum. Results: pH, moisture content and yield ranged from 3.16 to 4.74; 9 to 18.30%; and 10.79 to 18.78%, respectively. Total polyphenol content ranged from 1.45 mgEAG/g to 4.56 mgEAG/g. The highest levels of total polyphenols were observed for the methanolic extracts of pulp. The different extracts strongly scavenged the DPPH radical with percentages of anti-free radical activity that varied from 50.76 to 64.43%.The antimicrobial susceptibility results of the methanolic extracts of D. edulis seed showed highest zones of inhibition to the microbial isolates tested. The microorganisms were resistant to the aqueous extracts of pulp and seed. Conclusion: The presence of bioactive compounds and the antimicrobial activity of Safou extracts could justify its use in the food and pharmaceutical fields.

Download Full-text