Raho Bachir

• Professor
• Professor at University Mustapha Stambouli of Mascara

Background. The Maillard product was prepared from four model systems (aminoacids-glucose) at pH 10 and 110°C for 120 mn. Aim. This study aims to investigate the antimicrobial potential of different Maillard products and their hemolytic effect. Methods. Maillard products were prepared by four models (Gly-glu), (Val-glu), (Try-glu) and (Asp-glu). Th...

A pot experiment was conducted to assess the effectiveness of Nerium oleander L. in phytoremediation of cadmium (Cd), nickel (Ni), and lead (Pb)- contaminated soil. This evaluation included the application of ethylene diamine tetra-acetic acid (EDTA) and a nutrient solution containing NPK. The results revealed that the inclusion of EDTA and NPK, in...

The far ultraviolet rays are harmful to human health, particularly for their mutagenic effects; it can cause skin cancer, cataracts, photochemical pollution. In the future, chemists plan to use it as weapons for the destruction of objects. Therefore, we should meet this future challenge by scientific means in order to snuff out its far-ultraviolet...

The far ultraviolet rays are harmful to human health, particularly for their mutagenic effects; it can cause skin cancer, cataracts, photochemical pollution. In the future, chemists plan to use it as weapons for the destruction of objects. Therefore, we should meet this future challenge by scientific means in order to snuff out its far-ultraviolet...

The far ultraviolet rays are harmful to human health, particularly for their mutagenic effects; it can cause skin cancer, cataracts, photochemical pollution. In the future, chemists plan to use it as weapons for the destruction of objects. Therefore, we should meet this future challenge by scientific means in order to snuff out its far-ultraviolet...

Phenolic compounds are secondary metabolites found in most plant tissues, including fruits and vegetables. They are produced via shikimic acid and phenylpropanoid pathways. The most common classification implies the subdivision of phenolic in two main groups: flavonoids (e.g., anthocyanins, flavanols, flavanones, flavonols, flavonones, and isoflano...

Yogurt or yoghurt is one of the most popular fermented dairy products worldwide and has gained widespread consumer acceptance as a healthy food. In this study, steamed yogurt, which contained lactic ferments (Lactobacillus bulgaricus and Streptococcus thermophilus), was produced with egg white addition at various levels (1%, 2%, 3%, 4% and 5%). The...

The inhibitory effects of five commercial extracts (Allium sativum, Chamaemelum nobile, Thymus vulgaris, Zingiber officinale and Ricinus communis ) against Alternaria alternata were tested three concentrations (2.5, 5, 12.5 µl/ml) in vitro. T. vulgaris and R.communis extracts both exhibited the most effective antifungal activity against A. alternat...

In the present work, the antibacterial activity of five commercial vegetable extracts (Allium sativum, Chamaemelum nobile, Thymus vulgaris, Zingiber officinale and Ricinus communis) was evaluated against Staphylococcus aureus and Escherichia coli by the agar diffusion method, and the microdilution for the determination the minimum inhibitory concen...

To evaluate the antifungal activity of five commercial extracts against Candida albicans in vitro, five commercial extracts obtained from Allium sativum, Chamaemelum nobile, Thymus vulgaris, Zingiber officinale and Ricinus communis were tested at three different concentrations (pure, 1/2 and 1/4) for their antimicrobial activity against C. albicans...

The objectives of this study were to optimize the conditions for cell growth and exopolysaccharides (EPS) production by using pure and mixed microbial cultures of Streptococcus thermophilus and Lactobacillus bulgaricus, and to evaluate the antioxidant and antibacterial activities of EPS in vitro. The mixed cultures of two strains showed a higher ce...

The objectives of this study were to optimize the conditions for cell growth and exopolysaccharides (EPS) production by using pure and mixed microbial cultures of Streptococcus thermophilus and Lac-tobacillus bulgaricus, and to evaluate the antioxidant and antibacterial activities of EPS in vitro. The mixed cultures of two strains showed a higher c...

In this study, three marine algae collected from western coast of algerian mediteranean sea (Ulva lactuca, Dictyota dichotoma, and Corallina elongata) were tested using the agar-well diffusion method for their production of antibacterial and antifungal agents on various organisms that cause diseases of humans and plants (Eschirichia coli ATCC 25922...

The in vitro antimicrobial and antioxidant activities of the exopolysaccharide (EPS) extracted from yoghurt starter were investigated. Antimicrobial activity tests were carried out using disc diffusion methods with Escherichia coli, Staphylococcus aureus and Streptococcus D, Proteus spp and the yeast of Candida albicans. The antioxidant properties...

Juniperus phoenicea (Family: Cupressaceae) is an evergreen tree widely distributed in North Africa including Algeria. The aim of this investigation was to analyse the antimicrobial potential of essential oils from J. phoenicea on Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Streptococcus sp, Bacillus sp and...

The purpose of this research was to evaluate the in vitro antibacterial activity of the essential oils from the resin of Pistacia lentiscus against Staphylococcus aureus (Gram–positive bacteria) and Escherichia coli (Gram–negative bacteria). The agar disc diffusion method was used for microbial growth inhibition at various dilutions of the oils. Re...

Plant diseases impact negatively on human well-being through agricultural and economic loss and also have consequences for biodiversity conservation. They are caused by some pathogens like bacteria, fungi, nematodes and viruses. Bacteria and fungi are the most common cause of many diseases of plants. The use of antibiotics for the control of plant...

Plant essential oils are complex mixtures of volatile organic compounds which may possess antimicrobial activities of interest in the food and cosmetic industries as well in the human health field. Consequently, studies on the antimicrobial activities of essential oils have becomes increasingly important in the search for natural and safe alternati...

Sulfated polysaccharides (SP) were extracted from Corallina officinalis marine red algae seaweed by using hydrothermal processes at 100 °C. The antioxidant activity of C. officinalis sulfated polysaccharide were determined using the (2,2-diphenyl-1-picrylhydrazyl, DPPH) method , showing that this polysaccharide has a moderate effect in inhibiting t...

The present work is to study the emergence and growth of seedlings of five pistachio varieties that are: Batouri, Achouri, Neb-Djemel, Adjmi and Bayadhi. The study was conducted in a greenhouse temperature and photoperiod were controlled. The seeds are germinated in pots filled with peat without going through the damp cold stratification at a tempe...

The present work is to study the emergence and growth of seedlings of five pistachio varieties that are: Batouri, Achouri, Neb-Djemel, Adjmi and Bayadhi. The study was conducted in a greenhouse temperature and photoperiod were controlled. The seeds are germinated in pots filled with peat without going through the damp cold stratification at a tempe...

A Pseudomonas sp was isolated from cane molasse sample. The effect of different production parameters such as pH, temperature, incubation time, carbon source, nitrogen source (organic and inorganic), on invertase production by the isolated Pseudomonas sp strain were studied. The enzyme production was assayed in submerged fermentation (SmF). Maximum...

Production of extracellular invertase in submerged culture of Streptococcus sp has been investigated. Bacterial invertase producers were isolated from fermented date juice. One of the nine isolated strain exhibited a higher invertase activity was selected and identified based on their morphological and biochemical characteristics. The effect of inc...

he present study was conducted to evaluate the in vitro antimicrobial activity of commercial extracts of Salvia officinalis L. against Coliformes spp., Pseudomonas spp., Saccharomyces cerevisiae, Zygosaccharomyces bailii and Lactobacillus plantarum. Antimicrobial activity of extracts was investigated on the basis of Inhibition zones (IZ) measuremen...

This study was performed to evaluate the in vitro antioxidant activities of Juniperus phoenicea and Juniperus oxycedrus essential oils by three different methods, revealing an important antioxidant potential for both species. The results of the total antioxidant capacity of the EO's were 212.42 mg AE / g DM for J.phoenicea and 88.14 mg AE / g DM fo...

The interest in the fermentative production of lactic acid has increased due to the prospects of environmental friendliness and of using renewable resources instead of petrochemicals. In this context, we have judged that is gainful to use the date juice which is with a low commercial value as a substrate for the production of lactic acid by Strepto...

Fruits of date palm (Phoenix dactylifera L.) are consumed throughout the world and are a vital component of the diet in most Arabian countries. Consumers are increasingly searching for innovations of the food industry whenever they are able to make their own food choices. The dessert market is growing rapidly with many new products and concepts. Th...

Lactic acid is considered as a very important chemical compound with significant applications in pharmaceuticals, cosmetics and especially in the food industry. New applications, such as degradable plastics made from poly (lactic) acid, have the potential to greatly expand the market for lactic acid, if more economical processes could be developed....

Synthetic antioxidants are widely used in the food industry because of their ability to prevent deterioration of foods and prolong their shelf life, but a good number of them will be considered harmful to health and have carcinogenic risks. Particular interest was manifested in recent years to essential oils that are an effective alternative to che...

This study was carried out to investigate the potential use of Artemisia arborescens as a source of antimicrobial agents against pathogens. Essential oils of A. arborescens were collected by hydrodistillation. The antibacterial properties of A. arborescens essential oil was studied on the standard gram-negative bacteria (Escherichia coli and Pseudo...

Echinacea commonly called the Purple coneflowers, is a genus of nine species of herbaceous plants in the Family Asteraceae. Three of them are important in commerce, with the majority of wild harvest being E. angustifolia. It has been used for a variety of ailments, including toothache, coughs, colds, sore throats, snakebite, and as a painkiller. In...

Antifungal activities of four essential oils including Thymus vulgaris, Echinacea Angustifolia, Rosmarinus officinalis and Salvia officinalis were investigated against Zygosaccharomyces bailii at three different concentrations (10, 50 or 100 ppm) using well diffusion method. Z. bailii was least susceptible to the essential oils. The diameter of zon...

Inula viscosa has been used for years in folk medicine for its anti-inflammatory, antipyretic, antiseptic, and paper antiphlogistic activities. The aim of the present study is to investigate the antibacterial and antioxidant activities of the essential oils extracted by hydrodistillation from the leaves of Inula viscosa Ait., which was collected fr...

This study was designed to examine the in-vitro antimicrobial activities of essential oil of mastic gum extracted from Pistacia atlantica. Desf. The inhibitory effects of essential oil of resin oil were tested against clinical isolates of Streptococcus pyogenes by using disc diffusion method, determination of minimal inhibitory quantity (MIQ) and i...

Escherichia coli and Staphylococcus aureus are a serious cause of a variety of community- and hospital-acquired infections. E. coli is one of the most common nosocomial pathogens that cause urinary tract infections (UTIs) and enterocolitis. S. aureus is also an etiological infection agent responsible for significant levels of morbidity and mortalit...

Objective: To evaluate the in vitro antimicrobial activities of the crude oil of Eucalyptus camaldulensis (E. camaldulensis) leaves. Methods: The essential oils of E. camaldulensis harvested from the garden of the Health Center in Sidi Bel Abbes city (North West of Algeria), were screened for their antibacterial activities against two clinical bact...

Objective: To examine the in vitro antimicrobial activities of essential oil of the needles of Pinus halepensis (P. halepensis). Methods: The antibacterial activity of essential oil of the needles of P. halepensis was determined using the agar well diffusion technique and disc diffusion method against Staphylococcus aureus ATCC 25923, and Escherich...

The inhibitory effects of Thymus vulgaris essential oils were screened against Coliform spp, Pseudomonas spp, Saccharomyces cerevisiae (EC1118), Zygosaccharomyces bailii (DSM 70492) and Lactobacillus plantarum (DSM2601) by agar well diffusion method. Results obtained in thisstudy revealed that the essential oils of Thymus vulgaris posses a weak ant...

Two types of yoghurt with Rosmarinus officinalis oil was prepared and stored up to 21 days. The extract plant was added at the rate of 0.14, 0.21, 0.29, and 0.36 g/L. Yoghurt samples were analyzed for some physical, chemical, microbiological and sensory some characteristics. The total and fecal coliform count, Staphylococcus aureus count, Salmonell...

To examine the in vitro antimicrobial activities of essential oil of the leaves of Eucalyptus globulus (E. globulus). The essential oils of this plant were obtained by the hydrodistillation method. The inhibitory effects of this essential oil were tested against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) by using agar disc dif...

The essential oil from the gum of Pistacia atlantica Desf. grown in Algeria was obtained by the hydrodistillation method, and its antimicrobial activities against the growth of clinical isolates of Staphylococcus aureus, Escherichia coli and Streptococcus pyogenes were evaluated using the agar disc diffusion, the minimal inhibitory quantity (MIQ) d...

Résumé Le genre Pistacia est représenté en Algérie par quatre espèces, en l'occurrence Pistacia lentiscus, Pistacia terebinthus, Pistacia vera et Pistacia atlantica. Le pistachier vrai (Pistacia vera) et le pistachier de l'atlas ou bétoum (Pistacia atlantica) sont caractérisés du point de vue écologique par une grande tolérance aux variations clima...

The hydro-distilled essential oils from the exudates of Pistacia atlantica. Desf stems have been tested against three bacteria (Escherichia coli, Staphylococcus aureus and Streptococcus pyogenes) using three different methods (agar disc diffusion method, minimal inhibitory concentration and Maruzella method, and showed antimicrobial activity agains...

The antibacterial activities of essential oils from leaves of two Eucalyptus species (globulus and camaldulensis) was determined against Staphylococcus aureus Gram (+) and Escherichia coli Gram (-) bacteria. The inhibiting activity was evaluated by three methods: aromatogramme, microatmosphere and germs in suspension. Results demonstrated of the le...

The antibacterial activities of essential oils from leaves of two Eucalyptus species (globulus and camaldulensis) was determined against Staphylococcus aureus Gram (+) and Escherichia coli Gram (-) bacteria. The inhibiting activity was evaluated by three methods: aromatogramme, microatmosphere and germs in suspension. Results demonstrated of the le...

The hydrodistilled essential oils from Pistacia vera.L stem exudates have been tested against three bacteria (Escherichia coli, Staphylococcus aureus and Proteus spp) using three methods: agar disc diffusion, determination of MIC (minimum inhibitory concentration) and in the liquid phase by Maruzella method. The results obtained showed that essenti...

The essential oil from the gum of Pistacia atlantica Desf. grown in Algeria was obtained by the hydrodistillation method, and its antimicrobial activities against the growth of clinical isolates of Staphylococcus aureus, Escherichia coli and Streptococcus pyogenes were evaluated using three different methods; agar disc diffusion and dilution broth...