Commercial breed has taken over the Algerian poultry production market which participated in the weakening of the village poultry farming, highly dominant prior to the 1980s. Fortunately, the dietary preferences of consumers, strongly participated in the preservation of the local animal breed diversity. In this context, the aim of this work was to study the growth performances and meat quality of 3 local chicken phenotypes versus commercial broiler chicken in the same breeding conditions in the region of Chlef in Algeria. A week after hatching, 4 randomly chosen samples of 30 chicks from each phenotype normal plumage free-range chicken (NPFRC), crested free-range chicken (CFRC), feathered tarsus free-range chicken (FTFRC) and commercial broiler chicken (CBC) were reared from the age of 1 st until 8 th week (slaughter age). The three local breed (FTFRC, CFRC and NPFRC) had the comparable body weight, but low (p < 0.05) to those of CBC. In terms of meat quality, the principal components analysis (PCA) and the analysis of variance showed that the free-range chickens were more interesting than the commercial broiler chicken very fat, especially the crested phenotype (CFRC), due to its very high protein 24.6% and very low fat content 1.20%.Crescimento e qualidade de carne de três galinhas de livre-gama e grelha comercial nas mesmas condições de criação RESUMO. Raça comercial de aves tem assumido papel importante no mercado de produção de aves na Argélia que determinou uma redução na produção caipira, altamente dominante antes dos anos oitenta. Felizmente, as preferências dietéticas de consumidores, fortemente contribuiu para preservação da diversidade das raças locais. Neste contexto, o objetivo deste trabalho foi estudar o desempenho animal e qualidade de carne de 3 fenótipos de galinha locais versus galinha de linhagem comercial na mesma criação na região de Chlef na Argélia. Uma semana depois de chocar, 4 amostras foram escolhidas ao acaso de 30 pintinhos de cada fenótipo galinha comum de plumagem normal (NPFRC), criadas galinha comum coroada (CFRC), galinha comum de perna emplumada (FTFRC) e galinha de linhagem comercial (CBC) de 1ª a 8ª semana de idade. A três raças comuns (FTFRC, CFRC e NPFRC) tiveram o peso de corpo comparável, mas menor (p < 0.05) do que para a linhagem CBC. Em termos de qualidade de carne, a análise de componentes principais (PCA) e a análise de discrepância mostrou que as galinhas comuns eram mais interessantes que a galinha de linhagem comercial (muito gorda), especialmente o fenótipo coroado (CFRC), devido ao seu elevado teor em proteína (24.6%) e baixo conteúdo de gordura (1.20%).
Rhamnus alaternus L. is a Rhamnaceae shrub and a popular traditional medicine in Algeria. The present research objective was to investigate the antioxidant, genotoxic, and antigenotoxic properties of R. alaternus methanolic leaf extract. Antiradical scavenging activity was tested by α, α-diphenyl-β-picrylhydrazyl free radical scavenging and β-carotene bleaching method. DNA damage and repair were measured by the Allium cepa test with sodium azide as a mutagenic agent. Mitotic index and chromosomal aberrations were calculated by microscopy of meristem roots stained with 2% carmine acetic. The methanolic extract of R. alaternus leaves inhibited the free radical DPPH (IC50 = 0.74 ± 0.3 mg/mL) and prevented the oxidation of β-carotene (50.71 ± 4.17%). The root phenotyping showed that sodium azide changed their color and shape, decreased their stiffness, and significantly reduced their length. The roots treated with both R. alaternus leaf extract and sodium azide demonstrated a better root growth. The roots treated with the methanolic extract were much longer than the control roots (P < 0.001). The microscopy images of root meristem treated with the sodium azide mitodepressant agent showed significant chromosomal aberrations, which indicated a disruption of the cell cycle. The R. alaternus leaf extract appeared to have a beneficial effect on cytotoxicity. The antioxidant properties of R. alaternus L. makes this plant an excellent genoportector.
Introduction. Myrtus communis, Aristolochia longa, and Calycotome spinosa are medicinal plants frequently used in Algeria. Some plants can cause a fragility of the erythrocyte membrane and lead to hemolysis. Therefore, we aimed to study the cytotoxicity of aqueous extracts from the aerial part of these species against red blood cells. Study objects and methods. The hemolytic effect was determined spectrophotometrically by incubating an erythrocyte solution with different concentrations of the aqueous extracts (25, 50, 100, and 200 mg/mL) at 37°C during one hour. In addition, we performed phytochemical screening and measured the contents of polyphenols and flavonoids. Results and discussion. After one hour of incubation of human red blood cells with the aqueous extracts at different concentrations, the hemolysis percentage showed a significant leak of hemoglobin with A. longa (68.75 ± 6.11%; 200 mg/mL), the most toxic extract followed by C. spinosa (34.86 ± 5.06%; 200 mg/mL). In contrast, M. communis showed very low cytotoxicity (20.13 ± 3.11%; 200 mg/mL). Conclusion. These plants are sources of a wide range of bioactive compounds but their use in traditional medicine must be adapted to avoid any toxic effect.
L’objectif principal de ce travail est d’évaluer l’activité antiparasitaire des graines de Moringa oleifera dans le traitement des eaux usées. Au cours de cette étude, des analyses parasitologiques ont été effectuées sur trois types d’eau : des eaux usées brutes(EB), des eaux usées épurées (EE), et des eaux usées traitées par les graines de M. oleifera. Les résultats obtenus ont montré que les EB sont fortement polluées avec des taux élevés de parasites (Entamoeba histolytica, Entamoeba coli, Giardia lamblia, Ascaris sp, Strongyloides sp, Trichuris spp et Ankylostoma sp). Les EE révèlent une diminution appréciable des helminthes 9 œufs/L. Cependant, ces valeurs restent supérieures aux normes algériennes et à celles de l’OMS. Les résultats obtenus des eaux usées traitées par les M. oleifera ont révélé une absence totale de parasites. Le taux d’abattement du nombre de kystes de protozoaires et œufs d’helminthes pour les EE était de 85,86 % et 58,02 % respectivement. Tandis que pour les eaux traitées par M. oliefera, le taux était de 100 % et 100 % respectivement.
Le présent travail vise à déterminer les teneurs de quelques constituants de la fraction insaponifiable de 13 échantillons d’huile d’olive provenant de plusieurs régions d’Algérie, tout en évaluant leurs activités antibactériennes à l’égard de huit souches ATCC potentiellement pathogènes. La teneur en polyphénols totaux dans les échantillons a varié significativement (p < 0,05) d’un extrait à un autre, et les valeurs les plus importantes ont été enregistrées dans les extraits de Skikda et Tissemsilt (207,97 ± 1,75 mg d’acide gallique/kg et 202,97 ± 2,67 mg d’acide gallique/kg respectivement). La teneur en flavonoïdes totaux dans les différents extraits était variable. Les teneurs les plus élevées ont été enregistrées dans les extraits d’Ain-Defla et Blida, alors que l’extrait de Jijel a été le plus riche en flavonols, avec une valeur de 258,22 ± 13,00 mg/kg. Aucune corrélation n’a été établie entre la teneur en polyphénols totaux et les flavonoïdes totaux. Les souches bactériennes ont montré un comportement variable entre la sensibilité, l’extrême sensibilité et la résistance vis-à-vis des extraits phénoliques avec une corrélation négative entre la teneur en polyphénols totaux et l’activité antibactérienne, tandis que les concentrations minimales inhibitrices les plus faibles ont été enregistrées avec les extraits qui ont donné les diamètres des zones d’inhibition les plus élevées.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.