EUROPEAN JOURNAL OF
PHARMACEUTICAL AND MEDICAL RESEARCH

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Pharmaceutical, Medical & Biological Sciences

An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)

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 ISSN 2394-3211

Impact Factor: 6.222

 ICV - 79.57

Abstract

EFFECT OF DIFFERENT DRYING METHODS ON THE ANTIOXIDANT PROPERTIES OF 4 LEAFY VEGETABLES CONSUMED IN NORTHERN CÔTE D'IVOIRE

Coulibaly Tialafolo Alassane, Méité Souleymane*, Touré Abdoulaye, Zoro Armel Fabrice, Kablan Ahmont Landry Claude, Coulibaly Adama and Djaman Allico Joseph

ABSTRACT

In tropical Africa, reports of the antioxidant potential of consumed leafy vegetables are rare. In order to contribute to their valorization, leafy vegetables consumed in the north of Côte d'Ivoire (Cerathoteca sesamoïdes, Leptadenia hastata, Ocimum gratissimum and Portulaca oleracea) were studied. The objective of this study was to evaluate the effect of three drying treatments (sun, oven and shade) on the antioxidant properties of these leafy vegetables. These leafy vegetables were collected in the cities of Korhogo and Dabakala located in the North and North-central of Côte d'Ivoire, respectively and then were subjected to different drying methods, namely shade, sun and oven before their antioxidant properties were determined. The results show that shade drying resulted in less loss of vitamin C (37 to 66%) and carotenoids (93 to 100%). Leaves of L. hastata have the residual vitamin C (23.96±0.28 mg/100g) and carotenoids (0.32 ± 0.01 mg/100g) levels. This drying also resulted in a better concentration of phytochemicals. Leaves of O. gratissimum recorded the highest contents of total polyphenols (1118.19±0.74 mg/100g) and tannins (69.75 ± 0.43 mg/100g) while the leaves of C. sesamoïdes have the highest flavonoid content (99.44 ± 0.28 mg/100g). The concentration of phenolic compounds increases an antioxidant activity in three drying modes. This increase is greater during shade drying. O. gratissimum has the highest antioxidant activity (86.78%) during shade drying. Based on their antioxidant properties, L. hastata and O. gratissimum leaves could be considered good ingredients in the formulation of dietary supplements.

Keywords: Leafy vegetables, antioxidant activity, sun drying, shade drying, oven drying.


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Google Scholar Indian Science Publications InfoBase Index (In Process) SOCOLAR, China Research Bible, Fuchu, Tokyo. JAPAN International Society for Research activity (ISRA) Scientific Indexing Services (SIS) Polish Scholarly Bibliography Global Impact Factor (GIF) (Under Process) Universal Impact Factor International Scientific Indexing (ISI), UAE Index Copernicus CAS (A Division of American Chemical Society) USA (Under Process) Directory of Open Access Journal (DOAJ, Sweden, in process) UDLedge Science Citation Index CiteFactor Directory Of Research Journal Indexing (DRJI) Indian citation Index (ICI) Journal Index (JI, Under Process) Directory of abstract indexing for Journals (DAIJ) Open Access Journals (Under Process) Impact Factor Services For International Journals (IFSIJ) Cosmos Impact Factor Jour Informatics (Under Process) Eurasian Scientific Journal Index (ESJI) International Innovative Journal Impact Factor (IIJIF) Science Library Index, Dubai, United Arab Emirates Pubmed Database [NLM ID: 101669306] (Under Process) IP Indexing (IP Value 2.40) Web of Science Group (Under Process) Directory of Research Journals Indexing Scholar Article Journal Index (SAJI) International Scientific Indexing ( ISI ) Scope Database