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Research Article Open access CC BY 4.0

Nutritional Study of Four Leafy Vegetables Produced and Sold in the Southern Zone of Brazzaville (Republic of Congo)

Mabiala Ngouma Breve, Enzonga Yoca Josiane, M. D. Mvoula Tsieri

Asian Food Science Journal · pp. 28–40 · Published 5 Jul 2023

10.9734/afsj/2023/v22i8651

Abstract

Generally overlooked by consumers, many local leafy vegetables in the Republic of Congo are considered to be part of the rural way of life and “poor man's food”. In order to promote their consumption, this study was carried out to assess the nutrient composition of four leafy vegetables (Amaranthus hybridus L, Basella alba, Solanum nigrum L and Ipomea batatas L). The leafy vegetables were collected from two markets and two market garden sites. The pH and the contents in moisture, protein, ash, lipids and minerals (Ca, P, Fe and Mg) were determined using standard analytical methods (Association of Official Analytical Chemists). The results indicate that the four leafy vegetables have a pH of between 6 ± 0.03 and 7 ± 0.04, high moisture content (81.43 ± 0.20 to 94.89 ± 0.12 g/100g FW), high protein content (21.95 ± 0.05 to 32.59 ± 0.07 g/100g FW) and high ash content (13.32 ± 0.05 to 25.78 ± 0.03 g/100g FW). All the vegetables were low in lipids (between 2.73 ± 0.23 and 4.81 ± 0.20 g/100gDW). The investigations also show that the four vegetables studied have high levels of phosphorus (389.27 ± 3.23% to 875.22 ± 3.16 mg/100 g DM), iron (70.29 ± 0.15 to 180.06 ± 1.21 mg/100 g DM), calcium (106.78 ± 3.25 to 3404.57 ± 8.07 mg/100 g DM) and magnesium (679.20 ± 2.25 to 2331.25 ± 3.26 mg/100 g DM). In addition, the vegetables collected at the market garden site of the municipal garden had the best a best Ca/P ratio (2.56 to 4.59). These findings suggest that these leafy vegetables represent a genuine alternative source of protein and especially micronutrients (iron, phosphorus, calcium, magnesium) for human nutrition, health and food safety.

Nutritional study leafy vegetable Amaranthus hybridus L Basella alba Solanum nigrum L Ipomea batatas L Republic of Congo minerals

References (31)

  1. 1 Health benefits of dietary fiber [DOI]
  2. 2 AOAC, 1970. Official Methods of Analysis of the
  3. 3 Plant food anti-nutritional factors and their reduction strategies: an overview [DOI]
  4. 4 The Association of Official Analytical Chemists [DOI]
  5. 5 Metabolic Effects of Dietary Fiber Consumption and Prevention of Diabetes [DOI]
  6. 6 Mechanisms underlying the cholesterol-lowering properties of soluble dietary fibre polysaccharides [DOI]
  7. 7 Fruit and Vegetable Intake and Overall Cancer Risk in the European Prospective Investigation Into Cancer and Nutrition (EPIC) [DOI]
  8. 8 Calcium Intake and Health [DOI]
  9. 9 Magnesium in Aging, Health and Diseases [DOI]
  10. 10 Sweet potato (Ipomoea batatas L.) leaves as nutritional and functional foods [DOI]
  11. 11 Nutrients, minerals, pigments, phytochemicals, and radical scavenging activity in Amaranthus blitum leafy vegetables [DOI]
  12. 12 Magnesium in Health and Disease [DOI]
  13. 13 Nutritional quality and safety aspects of wild vegetables consume in Bangladesh [DOI]
  14. 14 Assessment of antioxidant, anticancer and antimicrobial activity of two vegetable species of Amaranthus in Bangladesh [DOI]
  15. 15 Nutritional components in green leafy vegetables: A review
  16. 16 Characterization of Phytochemicals, Nutrients, and Antiradical Potential in Slim Amaranth [DOI]
  17. 17 Sweet potato leaves: properties and synergistic interactions that promote health and prevent disease [DOI]
  18. 18 Chemical Evaluation of the Nutritive Value of Pentaclethra macrophylla benth (African Oil Bean) Seeds [DOI]
  19. 19 Mineral Composition of Ten Elites Sweet Potato (Ipomoea Batatas [L] Lam) Landraces of Benin [DOI]
  20. 20 Vegetables - Importance of Quality Vegetables to Human Health [DOI]
  21. 21 Nutrient and Mineral Compositions of Wild Leafy Vegetables of the Karen and Lawa Communities in Thailand [DOI]
  22. 22 Phytochemical and Nutritional Quality Changes During Irrigation and Postharvest Processing of the Underutilized Vegetable African Nightshade [DOI]
  23. 23 Nutritional and Functional Properties of Wild Leafy Vegetables for Improving Food Security in Southern Angola [DOI]
  24. 24 Proximate and phytochemical composition of selected indigenous leafy vegetables consumed in Malawi [DOI]
  25. 25 Comparative Proximate, Minerals and Antinutrient Analysis of Selected Nigerian Leafy Vegetables [DOI]
  26. 26 Evaluation nutritionnelle de la morelle Africaine au Cameroun [DOI]
  27. 27 Breeding biology of African grey parrot (Psittacus erithacus) in Kom National Park (South-Cameroon) and implications to the species conservation [DOI]
  28. 28 Caractérisation De Quelques Légumes-Feuilles Les Plus Consommés Dans La Ville De Daloa (Centre-Ouest, Côte d’Ivoire) [DOI]
  29. 29 Utilisation des paramètres biochimiques pour la détermination de la date optimale de récolte des feuilles de bissap (Hibiscus sabdariffa L.) au Sénégal [DOI]
  30. 30 To study the composition of minerals and vitamins of some fresh vegetables with special reference to the Kullu District of Himachal Pradesh India. [DOI]
  31. 31 Journal of Pharmacognosy and Phytochemistry [DOI]

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