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Development of extraction and analysis of polyphenols of Mesembryanthemum edule L.

Mesembryanthemum edule (Aizoaceae family) is an edible halophyte widely used as a food ingredient and in traditional medicine. This study was intended to characterize the phenolic compounds of M. edule fresh and stone stems. The approach consisted to establish the phenolic composition through LC-DAD-ESI/MS consisted of an Acquity UPLC (Waters, Milford, MA) coupled with DAD and a Brucker Daltonics Ion trap mass spectrophotometer. The UPLC analysis revealed that the main phenolic compounds were catechin, epicatechin and procyanidin (4.9% yields) in the fresh stems, while catechin,epicatechin, procyanidin and propelargonidins (5.06% yields) were the most abundant phenolics in the stone stems.



The Coumarin from Euphorbia guyoniana Boissier and Reuter

Esculetin is a phenolic compound that is found in various natural plant products and induces apoptosis in several types of human cancer cells. However, the underlying mechanisms of its action are not completely understood. In the present work a phytochemical study of ethyl acetate extracted from the aerial parts of Euphorbia guyoniana plant endemic of Algeria, led to the isolation of a compound (esculetin). The purification of this compound was by column chromatography and TLC. The identification of the structure was used by usual spectroscopic methods such as ESI-MS, NMR (1D and 2D). Coumarins Euphorbia guyoniana were not isolated earlier.



Direct Bioautography for Anti fungal Activity Measurement “Case of Bayoud Disease”

Fusarium oxysporum f. sp. albedinis (Foa) is...

Fusarium oxysporum f. sp. albedinis (Foa) is the causal agent of a lethal disease of date palm “Phoenix dactylifera L.” called Bayoud. The antifungal test against Foa was evaluated using direct bioautography for extracts from four medicinal and/or poisonous plants (Acacia raddiana, Asteriscus (...)


Determination of free sterols in red an d brown algae by FTIR spectroscopy

A new analytical method was developed for the...

A new analytical method was developed for the determination of free sterols in the extracts of the red alga Asparagopsis armata and the brown one Cystoseira sedoides by using FTIR spectrometry. Sterols samples were globally refered to cholesterol content because it is the major sterol contained (...)


Phenolic content and antioxida nt activity of extracts from Acacia arabica Barks

Acacia Arabica plant is well known in the...

Acacia Arabica plant is well known in the region of North African Sahara for its efficiency in the traditional treatment of several diseases such as diarrhoea, eczema, tonsillitis and conjunctivitis. This work was aimed to determine the total phenolic content and antioxid ant activity of (...)


An overview on age relate d macular degeneration and recent advances in its management

Age-related macular degeneration (AMD) is a...

Age-related macular degeneration (AMD) is a condition characterized, in the early stages, by slow development and progression, absence of symptoms over a number of years, and extensive retinal deposits called drusen, often associated with pigmentary abnormalities (early AMD).There is strong and (...)


Etude de l’effet des huiles e ssentielles brutes foliaires de Colocynthis vulgaris (L.) Schrad (Cucurbitaceae) sur l’ activité cholinestérasique chez les imagos de Schistocerca gregaria (Forskål, 1775)

Le présent travail porte sur l’étude de l’effet de la toxicité sur l’activité cholinestérasique et quelques paramètres physiologiques chez des individus mâles et femelles de Schistocerca gregaria élevé en laboratoire et exposé aux huiles essentielles brutes des feuilles de Colocynthis vulgaris. Les (...)


In vitro effect of Hesperidin & Hesperitin on calcium oxalate Crystallization : The Chiral Impact

Hesperidin, an abundant bioflavonoid in citrus fruits, has been reported to possess a wide range of pharmacological properties. In this study, the antilithiasic activity of hesperidin a glycoside flavanone extracted from leaves peel of three different citrus species, (C. reticulata, C. (...)


Antioxidant activity of Imino-Hesperidin derivatives

DMF solution of imino-Hesperidin derivatives was screened for its antioxidant activity based on their capacity to scavenge the free β-carotene radical after exposure to a UV lamp at 254 nm. In the first time, we have synthesized seven new compounds derived from Hesperidin 1 based on condensation (...)


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