Search

Copyright of Journal of Plant Protection & Pathology is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A total of 180 samples of yoghurt (small and large scale), soft white cheese (Tallaga and Feta) and rayeb milk (small and large scale) 30 of each were arbitrarily collected from different localities as dairy shopes and markets in Beni-Suef city, Egypt. The results revealed that the mean values of S.aureus were 5.7X103 ± 3.2X103, 9.3X102 ±3.9X102, 4.3X104 ±2X104, 5.1X103 ±1.7X103, 3.6X104 ±1.3X104 and 5.5X102±2.7X102, respectively. Also, the result regarding that 60% of examined S. aureus strains were enterotoxigenic by multiplex PCR technique as carried one or two se- genes. The present work evaluated the influence of probiotic as live organisms on the survival of S.aureus in some dairy product as Tallaga cheese and rayeb milk during their production and refrigerator storage. [ABSTRACT FROM AUTHOR]

Polymeric composites are widely used in manufacturing the space structures because of their superior light weight compared with either the metallic ferrous or non-ferrous materials. These materials should secure high strength to weight ratio and reasonable thermal and/or optical properties. In this work, the selected polymeric matrix composites reinforced with three different types of fibers, namely, carbon, fiberglass, and Kevlar were manufactured with the low-cost hand lay-up method. These samples were irradiated with different doses of γ-rays. These prescribed doses were chosen to simulate the charged particles space hazards in a well-defined orbit for 3.75, 5.625, and 7.5 years. Gases trapped during the manufacturing process were extracted and analyzed using the vacuum simulator facility at relatively high temperature to evaluate their effect on the optical surfaces. Mechanical properties variation of the irradiated composites was traced by tensile testing and correlated to the variation of their constituents' molecular structure which was analyzed by the Fourier Transformation Infrared (FTIR) spectroscopy. Thermal stability of the irradiated composites constituents, with the previously prescribed doses, was monitored at a wide range of temperatures. [ABSTRACT FROM AUTHOR]

The present investigation was conducted during the season of 2014 using five seedlings of date palm males selected from the evaluation of fifty male seedlings of date palm grown in Tamiya district, Fayoum Governorate, Egypt. To facilitate the selection and identification of good male pollinators for further using in breeding programs, the selection was carried out for promising males to be used to pollinate the females of date palm. The selected five male seedlings of date palm were analyzed using RAPD marker. Among a total of 77 bands obtained, 75 bands were polymorphic and the other 2 bands were monomorphic. Amplification size ranged between 280 and 2000 bp. UPGMA based cluster diagram showed that the all five different genotypes were grouped into two major clusters. Polymorphism percentage (96.4%) was indicated a high genetic diversity among the date palm studied. [ABSTRACT FROM AUTHOR]

Organochlorine insecticides residues (α-HCH, β-HCH, Lindane, HCB, Aldrin, Heptachlor, Chlordane, total DDT, Endrin and Methoxychlor) were analyzed in 75 samples of raw milk, sour cream and cooking buttercollected from Beni-Suef Governorate-using gas chromatography with electron capture detector (GC-ECD). The results indicated that all the examined samples were accepted except three butter samples showed residue levels exceeded the Maximum Residues Levels (MRLs). [ABSTRACT FROM AUTHOR]

The serious blue butterfly, Chilades pandava -Horsfield, 1829- (Lepidoptera: Lycaenidae) is consider one of the main destructive insect pests for ornamental palms Cycas and Zamia. Biological and morphological measurements were carried out of C. pandava stages reared on Cycas revoluta (Cycadaceae) and Zamia encephalartoides (Zamiaceae). In description details, non-significant variations were recorded between the two gender of cycad blue butterfly in the obtained data, but the male adult was more densely blue or violet than female adult. By the aid of SEM, C. pandava all stages were distinct by long and thick hairs covered all the body. The morphometric characters namely, length, width and venation of wings, body length, forewing, hindwing could be as a guide for taxonomic discrimination. The data showed that the life cycle duration of C. pandava was ranged between 20.64 to 21.7 days. The developmental periods of different C. pandava stages are slightly higher on zamia than cycas palms. This investigation detected that a high survival rate was found on Cycas palms (86%) than the survived rate recording on Zamia palms (82%). In the present study, the described morphometric characters could be used as a guide for taxonomic discrimination of this pest. Consequently, this study added a valuable knowledge about C. pandava to have sound decisions for proposal of its management and conservation in Egypt.

The development of different approaches to use agricultural residues as a source of high value-added products, become a must, especially after the problems emerged due to their accumulation. This contribution demonstrates the potential of agricultural residues, Linuim usitatissium (flax seed) and Nigella sativa (black seed) peels, as raw materials for the production of bioactive products, botanical insecticides, against Cx. pipiens , with deep analysis to their chemical constituents by gas chromatography-mass spectrometry, the larvicidal efficacies of the three crude extracts (methylene chloride, petroleum ether and methanol 70%) from the two plant waste peels were evaluated for the first time against the late third instar larvae of Cx. pipiens . Results indicated different lethal doses in larvae depending on the efficacy of organic solvent used. For both compounds methanol 70% extracts produced the highest dry yield. The most efficient solvent is petroleum ether in case of both flax and Black seed peels. Petroleum ether extract exhibited the highest toxicity against Cx. pipiens with an LC50 of 69.6383 ppm. The same results for black seed indicated that petroleum ether was the most efficient against Cx. pipiens with an LC50 of 40.7748 ppm. The study revealed for the first time the type of phytochemical constituents presents in peels of flax and black seeds using GC-MS analysis which revealed twenty-eight constituents among extracts of flax and black seed peels ranging from to 58.8711% to 99.99% of the total extracts. GC-MS profiling showed that a five constituents, 9-2-Methyl-Z, Z-3, 13 octadecadienol (terpenoid), 9,17-Octadecadienal, (Z)-, Nonanoic acid, 9-oxo-, methyl ester, 9,12-Octadecadienoic acid Z,Z and Octasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15-hexadecamethyl- have insecticidal activity beside many other biological activities as recorded from a variety of botanical extracts. While the constituents like Hexadecanoic acid, methyl ester and cis -9-Hexadecenal, both of them are larvicidal, cis -Vaccenic acid and 9-Oxononanoic acid showing only an insecticidal activity beside Undecanoic acid the mosquito repellent. The other six constituents Linoelaidic acid, Oleic Acid, Z-2-Octadecen-1-ol, 1-Methoxy-3-hydroxymethylheptane, Cis-11,14-Eicosadieonic acid-methyl ester and Heptasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-tetradecamethyl- are constituents of other plant extracts which showed as a whole an insecticidal activity., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2021 The Author(s).)

Some physico-chemical properties of fat released from chicken during grilling process were evaluated and the results showed that refractive index and saponification values were not affected by grilling process. However, serious increases in oxidative deterioration parameters and color were noticed. The main objective of this study was to characterize the effect of grilled fat on body weight, liver function, chromosomal aberrations and micronucleus formation in rats. Eight-week-old Swiss male albino rats, weighing approximately 90 g were used in this study. Rats were fed on a diet containing grilled fat for two months showed insignificant decrease in body weight compared to the control except, the eighth week (last weighing). The serum analysis should that aspartate transaminase (AST), cholesterol, creatinine and urea levels increased significantly whereas, alanine transaminase (ALT), and triglyceride levels were not affected. Also, cytogenetic analysis showed various types of chromosomal aberrations, i.e., chromatide breaks, ring chromosome, fragment chromosome, and end to end association chromosomes and insignificant increase in the frequency of micronucleated cells., (Copyright (c) 2010 Elsevier Ltd. All rights reserved.)