Ali Salem

Boiling, microwave-assisted hydration and ultrasonication-assisted hydration of eleusine flour influenced its chemical composition, leading to a reduction in total phenolics. The untreated eleusine flour, with the highest total phenolics and antioxidant potential, was chosen for pan bread formulation. LC–ESI–MS analysis of eleusine flour showed tha...

The present study aims to develop active films based on gelatin (FG) and clays, either smectite (Sm) or Illite (IL), and enriched with chamomile (Chm) aqueous extract at different concentrations (1% and 2%). Differential scanning calorimetry (DSC), tensile strength (TS), elongation at break (EAB), X-ray diffraction (XRD), Fourier-transform infrared...

Gelatin derived from marine by-products could be an interesting alternative to classic mammalian gelatin. The pretreatment and extraction conditions could influence the size of the resulting peptide chains and therefore their techno-functional properties. Thus, it is important to optimize the production process to get a gelatin for the appropriate...

The effect of TiO2 on structural properties of Mustelus mustelus gelatin films, obtained by solution casting method, was investigated. This work determined the effect of a low TiO2 particle ratio addition ranging from 0.01 to 0.03% on structural properties of gelatin films. The results showed that TiO2 incorporation improved the UV barrier efficacy...

An edible coating was developed using gelatin extracted from the skin of gray triggerfish (Balistes capriscus) and applied to the fillet of the smooth‐hound shark (Mustelus mustelus). Moringa oleifera leaf extract was added to gelatin coating solution to improve its preservative properties. The phenolic profiles and antioxidant and antibacterial ac...

The ricotta cheese undergoes early microbiological spoilage and high moisture loss that leads to brittle texture. The development of edible films based on active biomaterials plays an important role in the cheese industry. Thus, gelatin was extracted from the grey triggerfish (Balistes capriscus) co-product. The gelatin films were prepared and enri...

Research on bioactive compounds derived from medicinal plants is still topical and their applications are of interest to food industry, phytopharmacy and cosmetics. The present study deals with the phenolic compounds profile and antioxidant activities of Moringa oleifera Lam. leaves. Therefore, this work is a contribution to study the potential of...

The effect of TiO 2 on structural properties of gelatin films, obtained by solution casting method, was investigated. The results showed that TiO 2 incorporation improved the UV barrier efficacy and increased the films opacity. The formation of new interactions between gelatin matrix and TiO 2 particles were confirmed by FTIR analysis. A decrease i...

Bioactive films from marine gelatin are being developed for food packaging to make sustainable environment-friendly alternatives to synthetic ones. In addition, gelatin polymer can be added or combined with other substances (ie. antimicrobial and antioxidant molecules) or polymers that improve the intrinsic gelatin film properties to be active and...

The physical and functional properties of gelatin-based films enriched with organic extracts from Lepidium sativum seeds were studied. Gelatin was extracted from the skin of dogfish (Squalus acanthias) and the functional gelatin-based films were used to preserve cheese during chilled storage. Ethanol extract (LSE3) and gelatin-based film enriched w...

This study investigates the effect of agar addition and ultrasound treatment on the properties of edible films made from smooth hound (Mustellus mustellus) skin gelatin. The FTIR spectra showed the classic profile of gelatin spectrum presenting three characteristic absorption peaks related to amide I (1620–1690 cm−1), amide II (1540–1580 cm−1) and...

The physicochemical, thermal and mechanical properties of blood orange peel pectin (BOPP) film blended with fish gelatin (F-G), at different ratios, were investigated. BOPP was first, tested for its antioxidant capacity, monitored through the β-carotene bleaching, DPPH radical-scavenging and reducing power activities. BOPP and gelatin blending was...

The effects of two pretreatments (microwaves or oven-drying) on the dogfish (Squalus acanthias) skin as well as two drying processes (freeze-drying or spray-drying) on the extracted gelatins were studied. Thus six types of gelatins were obtained, three of which were freeze-dried (FG) and the others were spray-dried (SG), from the untreated skin (US...

The conjugation of smooth hound viscera autolysates (SHVA) and glucose (Gluc) through the Maillard reaction (MR) was studied. The degree of glycation, free amino groups, color parameters, structural (infrared and scanning electron microscopy analyses) and antioxidant properties of the resulting MR products (MRP) were studied. The degree of glycatio...

The seasonal dynamics of a Stomoxys calcitrans population was evaluated, using Vavoua traps, in a semi-urban area located in southwestern France (National Veterinary School of Toulouse) where horse and cattle paddocks were available. A bimodal pattern of stable fly population dynamics was observed, both peaks occurring in early summer and fall. Out...

Lemongrass oil (Cymbopogon citratus) is an effective repellent against mosquitoes (Diptera: Culicidae) and house flies (Diptera: Muscidae). In this study, its effectiveness was assessed on stable flies (Diptera: Muscidae) in laboratory conditions. First, we demonstrated that lemongrass oil is an active substance for antennal olfactory receptor cell...

Bionomic aspects of Stomoxys calcitrans (Linnaeus, 1758) (Diptera: Muscidae) were studied under laboratory conditions. For this reason, laboratory-rearing techniques were optimized at the National Veterinary School of Toulouse. The colony was maintained at 25±2°C, 50±10% RH under a 12-hour light cycle and observed daily. The size of each adult cage...

Cattle besnoitiosis due to the cyst-forming coccidian parasite Besnoitia besnoiti has recently been reported in expansion in Europe since the end of the twentieth century. The B. besnoiti life cycle and many epidemiological traits are still poorly known. Hematophagous flies, including the worldwide-distributed Stomoxys calcitrans, could be mechanic...

Susceptibility of two French strains of stable flies Stomoxys calcitrans (L.) to six insecticides was assayed, using an exposure technique (1-hour contact) with treated filter papers. Three replicates per insecticide, per concentration (10 concentrations per insecticide), per fly strain (ENVT, Cabanac) and fly category (blood-engorged - non-blood-e...

A survey was performed among 35 herds of dairy and lactating cows in the main breeding regions in France. Six methods were used for detection of Fasciola hepatica: Ab-ELISA using ES Antigens, Ab-ELISA using F2 Antigens, coproscopy by Stoll method on 5 grams of faeces, coproscopy by a sieving method on 50 grams of faeces, Ag-ELISA on faeces and dosa...

Bovine besnoitiosis, caused by the cyst-forming apicomplexan Besnoitia besnoiti, is commonly reported in some restricted regions of South-Western Europe, and in larger regions of Africa and Asia. This infection is thought to be transmitted by blood feeding insects and is responsible for major economic losses in cattle production. A recent emergence...