Abstract：
:Marine algae are known to produce a wide variety of bioactive secondary metabolites and several compounds have been derived from them for prospective development of novel drugs by the pharmaceutical industries. However algae of the Red sea have not been adequately explored for their potential as a source of bioactive substances. In this context Ulva reticulata, Caulerpa occidentalis, Cladophora socialis, Dictyota ciliolata, and Gracilaria dendroides isolated from Red sea coastal waters of Jeddah, Saudi Arabia, were evaluated for their potential for bioactivity. Extracts of the algae selected for the study were prepared using ethanol, chloroform, petroleum ether and water, and assayed for antibacterial activity against Escherichia coli ATCC 25322, Pseudomonas aeruginosa ATCC 27853, Stapylococcus aureus ATCC 29213, and Enterococcus faecalis ATCC 29212. It was found that chloroform was most effective followed by ethanol, petroleum ether and water for the preparation of algal extract with significant antibacterial activities, respectively. Results also indicated that the extracts of red alga G. dendroides were more efficient against the tested bacterial strains followed by green alga U. reticulata, and brown algae D. ciliolata. Chemical analyses showed that G. dendroides recorded the highest percentages of the total fats and total proteins, followed by U. reticulata, and D. ciliolate. Among the bioflavonoids determined Rutin, Quercetin and Kaempherol were present in high percentages in G. dendroides, U. reticulata, and D. ciliolate. Estimation of saturated and unsaturated fatty acids revealed that palmitic acid was present in highest percentage in all the algal species analyzed. Amino acid analyses indicated the presence of free amino acids in moderate contents in all the species of algae. The results indicated scope for utilizing these algae as a source of antibacterial substances.
journal_name
Saudi J Biol Scijournal_title
Saudi journal of biological sciencesauthors
Al-Saif SS,Abdel-Raouf N,El-Wazanani HA,Aref IAdoi
10.1016/j.sjbs.2013.06.001subject
Has Abstractpub_date
2014-01-01 00:00:00pages
57-64issue
1eissn
1319-562Xissn
2213-7106pii
S1319-562X(13)00063-6journal_volume
21pub_type
杂志文章abstract：:The extracts prepared from various areal parts of the Adenium obesum (Forssk.) Roem. & Schult. (Family: Apocynaceae) including leaves, fruit and seeds ethanolic extracts and seed aqueous extract were evaluated against MCF-7 cells in order to investigate its potential of cytogenotoxicity and induction of apoptosis. The...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2018.12.014
更新日期：2019-03-01 00:00:00
abstract：:Bamboo macromolecules were pretreated with bamboo vinegar, which has an antibacterial property, and processed into antibacterial bioboard (ABB) by hot pressing. The ABB was then analyzed by conducting Fourier-transform infrared spectroscopy, thermogravimetric analysis and differential thermal analysis. Results showed ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2017.08.010
更新日期：2018-03-01 00:00:00
abstract：:The interaction between Meloidogyne incognita (race 2) and Rhizoctonia solani (AG 4) in a root rot disease complex of green beans (Phaseolus vulgaris) was examined in a greenhouse pot experiment. Three week-old seedlings (cv. Contender) were inoculated with the nematode and/or the fungus in different combinations and ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2015.04.008
更新日期：2015-09-01 00:00:00
abstract：:Writing and publishing a scientific paper in academic journals is a highly competitive, time-consuming stepwise process. The road to scientific writing and publication is rarely straightforward. Scientific writing has uniform format, which is perplexing for the novice science writers due to its inflexible anatomy (str...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章,评审
doi：10.1016/j.sjbs.2018.01.004
更新日期：2018-11-01 00:00:00
abstract：:In this study, the selenium enriched peanuts and the different solubility proteins extracted from them were investigated. The dried defatted selenium enriched peanuts (SeP) powder (0.3147 μg/g) had a 2.5-fold higher mean total selenium concentration than general peanuts (GP) power (0.1233 μg/g). The SeP had higher con...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2015.08.007
更新日期：2016-05-01 00:00:00
abstract：:Metabolic syndrome (Mets) is a major health hazard. The syndrome is strongly linked to cardiovascular disease. The objective of the current study was to address whether or not crocin could protect against experimentally-induced MetS in rats as well as the possible underlying mechanisms. Animals were allocated into 4 g...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.01.004
更新日期：2020-05-01 00:00:00
abstract：:The present study sought to assess the potential of the cestode Hymenolepis diminuta as a bioindicator for lead accumulation in two industrial areas of the city of Riyadh, Saudi Arabia. Rats (Meriones libycus) were collected from two sites (industrial area II and Salbukh) in Riyadh. In the industrial area II, the mean...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2013.09.010
更新日期：2014-09-01 00:00:00
abstract：:Red palm weevil (Rhynchophorus ferrugineus) is a voracious pest of date palm worldwide. Pakistan ranks sixth in date palm production globally. Losses to date palm plantations in Pakistan sometimes surpass 10%-20%. Most of the traditional management strategies used by farmers have been found insignificant to combat thi...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2019.12.018
更新日期：2020-07-01 00:00:00
abstract：:Over the last decade, communication industries have witnessed a tremendous expansion, while, the biological effects of electromagnetic waves have not been fully elucidated. Current study aimed at evaluating the mutagenic effect of long-term exposure to 900-MHz radiation on alpha-Int1 gene sequences of Candida albicans...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2015.05.001
更新日期：2016-05-01 00:00:00
abstract：:Use of honey has a very long history. Honey has been used since ancient time due to its nutritional and therapeutic values. There had been varied ways of consumption honey including its use as a sweetener and flavoring agent. Honey is produced all over the world. The most important nutriment of honey is carbohydrates ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章,评审
doi：10.1016/j.sjbs.2016.12.010
更新日期：2017-07-01 00:00:00
abstract：:This study aims to present an integrated process that can be used to produce biomedical and biological active components from the fruit shell of Camellia oleifera Abel. Through the Foss method, Aldehyde, acid compounds, acyl and alcohol compounds account for 22.7, 15.93, 0.24 and 61.13% of the extractives which were e...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2017.08.006
更新日期：2018-02-01 00:00:00
abstract：:Fishes of the family Lethrinidae form a considerable portion of the catch from both the Red Sea and the Arabian Gulf in Saudi Arabia, and the species Lethrinus lentjan (Lacepède, 1802) is one of the most important among these fishes. This study was conducted to evaluate the demographic structure coefficients, survival...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.06.003
更新日期：2020-09-01 00:00:00
abstract：:Tomato (Lycopersicon esculentum) is one of the widely grown vegetables worldwide. Fusarium oxysporum f. sp. lycopersici (FOL) is the significant contributory pathogen of tomato vascular wilt. The initial symptoms of the disease appear in the lower leaves gradually, trail by wilting of the plants. It has been reported ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章,评审
doi：10.1016/j.sjbs.2019.06.002
更新日期：2019-11-01 00:00:00
abstract：:Schistosomiasis is still one of the main parasitic diseases that affect human health in tropical regions. Whilst praziquantel (PZQ) is the main classic antischistosomal drug, the need for new drugs is still a must due to the low effectiveness of the drug on the schistosome young worms, and the evolving of PZQ resistan...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2016.12.017
更新日期：2017-09-01 00:00:00
abstract：:Based on the massive production of cow and poultry manures, farmers in Saudi Arabia are moving towards the application of organic fertilizers in their farms. Therefore, the present work was conducted to study the response of soil and selected vegetable crops to poultry and cow manures, using ground data and Landsat-8 ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2019.06.006
更新日期：2019-11-01 00:00:00
abstract：:Shiga toxin-producing Escherichia coli (STEC) strains are considered as one of the major food-borne disease agents in humans worldwide. STEC strains, also called verotoxin-producing E. coli strains. The objectives of the present study were serotyping and molecular characterization of shiga toxigenic E. coli associated...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2015.02.019
更新日期：2015-07-01 00:00:00
abstract：:A level of water quality intended for human consumption does not seem necessary for domestic uses such as irrigation of green spaces. Alternative water supplies like the use of greywater (GW) can thus be considered. However, GW contains pathogenic microorganisms and organic compounds which can cause environmental and ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2017.01.006
更新日期：2019-01-01 00:00:00
abstract：:Prediction of a complex super-secondary structure is a key step in the study of tertiary structures of proteins. The strand-loop-helix-loop-strand (βαβ) motif is an important complex super-secondary structure in proteins. Many functional sites and active sites often occur in polypeptides of βαβ motifs. Therefore, the ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2015.10.005
更新日期：2016-01-01 00:00:00
abstract：:Gelatin is used as an ingredient in both food and non-food industries as a gelling agent, stabilizer, thickener, emulsifier, and film former. Porcine skins, bovine hides, and cattle bones are the most common sources of gelatin. However, mammalian gelatins are rejected by some consumers due to social, cultural, religio...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.03.022
更新日期：2020-06-01 00:00:00
abstract：:A field study was conducted to investigate the impact of different patterns of raking and baling operations on the dry matter (DM) and quality losses of the produced alfalfa (Medicago sativa) hay. The experimental work was carried out on a 50 ha center pivot irrigated alfalfa field in a commercial farm located in the ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2018.02.009
更新日期：2018-09-01 00:00:00
abstract：Background & objectives:Polycystic ovary syndrome (PCOS) is the most common endocrinal disorder, and the greatest cause of infertility in women. Despite availability of individual data on impact of multiple endocrinal, reproductive and even metabolic factors in PCOS individuals, the data on the co-existence of BED and ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.08.039
更新日期：2020-12-01 00:00:00
abstract：:Stress has many biological effects on human daily life. In the present study, dietary protein intake was correlated with the investigated stress levels of nurses and housewives of the targeted urban population. Age group ranged from 30 to 45 years and both the groups belonged to middle socioeconomic status. After calc...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2011.02.002
更新日期：2011-07-01 00:00:00
abstract：:Numerical simulations are used to investigate the wake structure and hydrodynamic performance of bionic flapping foils. The study is motivated by the quest to understand the fluid dynamics of fish fins and use it in the underwater propulsion. The simulations employ an immersed boundary method that makes it possible to...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2016.09.015
更新日期：2017-09-01 00:00:00
abstract：:Urinary tract infections are second most important diseases worldwide due to the increased amount of antibiotic resistant microbes. Among the Gram negative bacteria, P. mirabilis is the dominant biofilm producer in urinary tract infections next to E. coli. Biofilm is a process that produced self-matrix of more virulen...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.10.003
更新日期：2021-01-01 00:00:00
abstract：:This research aimed to study the diversity of purple nonsulfur bacteria (PNSB) and to investigate the effect of Hg concentrations in shrimp ponds on PNSB diversity. Amplification of the pufM gene was detected in 13 and 10 samples of water and sediment collected from 16 shrimp ponds in Southern Thailand. In addition to...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2015.05.014
更新日期：2016-07-01 00:00:00
abstract：:This study assessed the responses of vitamin-D3 intraperitoneally injected to Rohu, Labeo rohita @ of 0 IU/kg bw (only solvent), 100 IU/kg bw and 500 IU/kg bw reared in 20 and 40 ppm of calcium (Ca) enriched water. The cellular changes in Corpuscles of Stannius (CS) gland, serum Ca, and inorganic phosphate (Pi) level ...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.07.033
更新日期：2020-12-01 00:00:00
abstract：:Biosurfactants are secondary metabolites with surface active properties and have wide application in agriculture, industrial and therapeutic products. The present study was aimed to screen bacteria for the production of biosurfactant, its characterization and development of a cost effective media formulation for ituri...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2015.09.014
更新日期：2017-11-01 00:00:00
abstract：:Asian citrus psyllid is a most damaging insect pest of citrus. In this field study, the efficacy of seven insecticides (emamectin benzoate, bifenthrin, chlorfenapyr, fipronil, imidacloprid, pyriproxyfen and thiamethoxam) was evaluated against Diaphorina citri Kuwayama in the citrus orchard of Kinnow mandarin, Citrus r...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.02.006
更新日期：2020-05-01 00:00:00
abstract：:The effect of fertilizer on yield and yield related traits studied in two consecutive years at two different locations. Three different doses of fertilizer (NPK) applied at the rate of 9:23:0, 18:46:12 and 27:69:25 respectively on sixteen chickpea, genotypes (Desi and Kabuli advance lines and commercial varieties). Da...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2020.11.014
更新日期：2021-01-01 00:00:00
abstract：:Ubiquitin expression protein DNA clone (Hl-UBI) was isolated from Heterodera latipons collected from North Jordan. Its sequence of 285 nucleotides was also determined and deposited in the GeneBank. The 285-bp open reading frame coded for 76-amino acid protein having two domains; the ubiquitin domain and the C terminal...
journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
doi：10.1016/j.sjbs.2018.06.005
更新日期：2019-11-01 00:00:00
