La rhodophycée &lt;i&gt;Gelidium spinosum&lt;/i&gt; (S.G. Gmelin) P.C. Silva, des côtes de Monastir (Tunisie) : quelques éléments hydrobiologiques et potentialités en agar-agar

Said, Rafik Ben; Romdhane, Mohamed Salah; Abed, Amor El; M'rabet, R

doi:10.4314/afsci.v5i1.61716

Cited by 2 publications

(2 citation statements)

References 20 publications

(12 reference statements)

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“…Gelidium spinosum was studied for the first time in Tunisia under the name of Gelidium latiforium in 1999 to explore some hydro biological elements and agar-potentiality. However, there remains limited information regarding its phytochemical constituents and its potential biological activities [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

The Potential Effect of Polysaccharides Extracted from Red Alga Gelidium spinosum against Intestinal Epithelial Cell Apoptosis

Ajala

Droguet²,

Kraiem

et al. 2023

Pharmaceuticals

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Gut injury is a severe and unpredictable illness related to the increased cell death of intestinal epithelial cells (IECs). Excessive IEC apoptotic cell death during the pathophysiological state entails chronic inflammatory diseases. This investigation was undertaken to assess the cytoprotective action and underlying mechanisms of polysaccharides from Tunisian red alga, Gelidium spinosum (PSGS), on H2O2-induced toxicity in IEC-6 cells. The cell viability test was initially carried out to screen out convenient concentrations of H2O2 and PSGS. Subsequently, cells were exposed to 40 µM H2O2 over 4 h in the presence or absence of PSGS. Findings revealed that H2O2 caused oxidative stress manifested by over 70% cell mortality, disturbed the antioxidant defense, and increased the apoptotic rate in IEC-6 cells (32% than normal cells). Pretreatment of PSGS restored cell viability, especially when used at 150 µg/mL and normal cell morphology in H2O2-callenged cells. PSGS also equally sustained superoxide dismutase and catalase activities and hindered the apoptosis induced by H2O2. This protection mechanism of PSGS may be associated with its structural composition. The ultraviolet visible spectrum, Fourier-transformed infrared (FT-IR), X-ray diffraction (XRD), and high-performance liquid chromatography (HPLC) demonstrated that PSGS is mainly sulfated polysaccharides. Eventually, this research work provides a deeper insight into the protective functions and enhances the investment of natural resources in handling intestinal diseases.

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Section: Introductionmentioning

confidence: 99%

The Potential Effect of Polysaccharides Extracted from Red Alga Gelidium spinosum against Intestinal Epithelial Cell Apoptosis

Ajala

Droguet²,

Kraiem

et al. 2023

Pharmaceuticals

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“…The present study results are in agreement with those of Mouradi-Givernaud et al (1999) which showed that the maximum yield of agar from G. sesquipedale of Moroccan Atlantic coast, is obtained between March and August (40%). Moreover, several works on Gelidium, recorded the maximum yield during the spring and/or summer, such as G. spinosum of the Tunisian coast (Monastir) (33.37 ± 2.80%) (Ben Said et al, 2009), G. canarisiensis of the Canary Islands (32.6%) (Freile-Pelegrin et al, 1995) and G. robustum of western coast of Mexico (44.2%) (Freile-Pelegrin et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

Effects of season on the yield and quality of agar from Gelidium sesquipedale (Rhodophyta) from Mostaganem, Algeria

nil¹,

Ali-Mehidi²,

Zellal³

et al. 2016

Afr. J. Biotechnol.

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The aim of this work was to study the seasonal variations in the yield and physicochemical properties of agar of Gelidium sesquipedale. The algae w ere collected from January 2011 to December 2011, from the coast of Mostaganem, western Algeria. The overall results show that the dry biomass of Gelidium sesquipedale was constant throughout the year (22.34 ± 3.18 %), while the agar yield varied seasonally with highest values (P<0.05) in spring and summer (32.22 ± 1.7%). Regarding the composition of the agar, total sugars was 87.63% (± 6.9 %), with a maximum in winter (P<0.05), the 3,6anhydrogalactose varied between 30.65 (±2.56%) and 40.40% (±1.34%). The agar of G. sesquipedale was slightly substituted with sulphate (2.75 ± 1.37%) and pyruvate (0.32 ± 0.09%) and had a viscosity of 11.11 mPa.s (± 1.50 mPa.s.). In general, the physicochemical characteristics of the agar of G. sesquipedale are similar to those of the commercial agar, which leads to the conclusion that this alga can be a source of production of agar.

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La rhodophycée <i>Gelidium spinosum</i> (S.G. Gmelin) P.C. Silva, des côtes de Monastir (Tunisie) : quelques éléments hydrobiologiques et potentialités en agar-agar

Cited by 2 publications

References 20 publications

The Potential Effect of Polysaccharides Extracted from Red Alga Gelidium spinosum against Intestinal Epithelial Cell Apoptosis

The Potential Effect of Polysaccharides Extracted from Red Alga Gelidium spinosum against Intestinal Epithelial Cell Apoptosis

Effects of season on the yield and quality of agar from Gelidium sesquipedale (Rhodophyta) from Mostaganem, Algeria

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