Storage Mite Infestation of Dry-Stored Food Products and Its Relation to Human Intestinal Acariasis in the City of Minia, Egypt

2019 ◽  
Vol 57 (2) ◽  
pp. 329-335
Author(s):  
A K Ahmed ◽  
A M Kamal ◽  
N M E Mowafy ◽  
E E Hassan

Abstract Initial data on the prevalence of storage mites in dry-stored food products and estimates of the presence of mites in human stool in the city of Minia, Egypt are provided. In total, 847 samples were collected randomly from houses and retail stores between March 2017 and February 2018. In addition, 1,000 human stool samples were collected for the detection of the presence of mites. Mites were extracted from 285 of 840 (33.9%) samples, and mite contamination was found to be most prevalent in wheat flour (73.3%). In total, 11 mite species belonging to six families were identified, with the pest species Tyrophagus putrescentiae (Schrank) (Acari: Acaridae) (TP) being the most prevalent (91.2% of samples). The seasonal density distribution showed the highest storage mite density in March–April, followed by October, and the lowest in January. In addition, mites were detected in 87 (8.7%) human stool samples, with significant associations between certain occupations and some personal characteristics. Therefore, more attention needs to be paid to intestinal acariasis arising from mite infestation of dry-stored food products.

2019 ◽  
Vol 24 (3) ◽  
pp. 337 ◽  
Author(s):  
Anar Bakr ◽  
Shady Selim

Mites have lately emerged as economically important pests of stored products. Recently, addition of natural origin compounds individually or as a combination with predators have provided a considerable value for controlling these pests. In this study, the efficacy of the bacterium-derived pesticides, spinosad and spinetoram, and the combination of each of them with the predator Cheyletus malaccensis Oudemans was evaluated against two storage mite pests, Tyrophagus putrescentiae (Schrank) and Aleuroglyphus ovatus (Troupeau) under optimal abiotic conditions for pest development. After 21d, the terminal density was estimated for both astigmatid mite species exposed to diet (experiment I) treated with either spinosad or spinetoram (concentrations range of 0.01-2 ppm).  Estimation was also done with diet (experiment II) treated with either spinosad or spinetoram (0.5 ppm) and/or the predator at initial predator/prey ratio (0.02). The density of predator was also determined after 21 days. Application of spinosyns significantly reduced population of T. putrescentiae and A. ovatus. The reduction potential increased with increasing concentration. Complete control of T. putrescentiae and A. ovatus was achieved by the application of spinosad at 1 and 2 ppm, respectively. As measured by rC50 and rC90 (concentration for 50% and 90% suppress of population in comparison to control), spinosad was more toxic to T.  putrescentiae and A. ovatus than spinetoram. Furthermore, T. putrescentiae was more susceptible to spinosad than A. ovatus. Conversely, it was less susceptible to spinetoram than A. ovatus. The populations of both mite species were successfully suppressed by the sole application of C. malaccensis. Although the density of predatory mites was not affected by the presence of 0.5 ppm spinosad, it was almost eradicated by spinetoram at 0.5 ppm. A combination of spinosad at 0.5 ppm with two individuals of C. malaccensis mites (ratio 0.02) outperformed spinosad used alone at the same former concentration in reduction efficiency of the pest populations by 12% for T.  putrescentiae and 25% for A. ovatus within 21 days.


2019 ◽  
Vol 10 (5) ◽  
pp. 456-469
Author(s):  
Habiba Abou Hafs ◽  
◽  
Fadila Boutora ◽  

The question of project manager competencies and especially in social projects is a key issue for social organizations seeking to progress and achieve success. If the manager has an important role to play with regard to the social organization, he’s however dependent on his behavioral, professional and personal capacities. The purpose of this paper is to show, on the basis of a quantitative study carried out among 120 managers of social projects in cooperatives located in the city of Agadir (Morocco), that the success of projects is conditioned by the leadership skills. Consequently, factors related to behavioral skills such as Solidarity; Involvement; Patience; Creativity; Empathy; Motivation; Trust; Commitment; Self-esteem; Transparency; Self-control; Discipline and other factors related to professional characteristics and personal characteristics of project managers prove a positive and significant relationship with the criterion of success studied.


Author(s):  
Sri Winarti ◽  
Yuni Ningsih

Gunung Anyar Tambak is one of the villages that is located adjacent to the UPN "Veteran" campus in East Java. Most (2/3) of the Gunung Anyar Tambak area is the pond area, which has the main yield is milkfish. Besides being sold in fresh form, milkfish from ponds from Gunung Anyar Tambak are also processed into a variety of processed products including shredded, crackers, soft thorns and milkfish “sapit”. Milkfish “Sapit” is a processed milkfish which is unique in its serving. The milkfish are clamped using bamboo stems and then processed using a choice of spices that make a distinctive taste in this dish. Processing by burning, causing a distinctive aroma that is not forgotten. Barokah is one of the community groups of “sapit” milkfish processing in RW I of Gunung Anyar Tambak Village which consists of 6 people. Chairman of UD. Barokan is Hj's. Khasibah, explained that most of the milkfish produced are only fulfilling orders from the surrounding area and orders from outside the city to be used as souvenirs typical of Surabaya. From observations and interviews it is known that the problem in processing milkfish is a very simple packaging that is a very thin plastic bag that is not closed. The second problem is that the packaging has no labeling at all, even though the label can identify the identity of the product in the package. The importance of labels on food products in addition to being the identity of the packaged product is also a communication between producers and consumers. Therefore a very absolute label must be given to the marketed food products. Training has been conducted on packaging and labeling milkfish “sapit” in UD. BAROKAH, Gunung Anyar Tambak, Surabaya. Before being packed with a vacuum packer, milkfish saplings are first dried in a cabinet dryer for 3 hours at 60°C. Labeling on milkfish packaging is in accordance with the law on food labeling on primary (plastic) and secondary (carton) packaging. In addition to providing training, our team also donates dryers and Vacuum Sealers.


Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 188
Author(s):  
Tanja Hoffmann ◽  
Andreas Hahn ◽  
Jaco J. Verweij ◽  
Gérard Leboulle ◽  
Olfert Landt ◽  
...  

This study aimed to assess standard and harsher nucleic acid extraction schemes for diagnostic helminth real-time PCR approaches from stool samples. A standard procedure for nucleic acid extraction from stool and a procedure including bead-beating as well as proteinase K digestion were compared with group-, genus-, and species-specific real-time PCR assays targeting helminths and nonhelminth pathogens in human stool samples. From 25 different in-house and commercial helminth real-time PCR assays applied to 77 stool samples comprising 67 historic samples and 10 external quality assessment scheme samples positively tested for helminths, higher numbers of positive test results were observed after bead-beating-based nucleic acid extraction for 5/25 (20%) real-time PCR assays irrespective of specificity issues. Lower cycle threshold values were observed for one real-time PCR assay after the standard extraction scheme, and for four assays after the bead-beating-based scheme. Agreement between real-time PCR results after both nucleic acid extraction strategies according to Cohen’s kappa ranged from poor to almost perfect for the different assays. Varying agreement was observed in eight nonhelminth real-time PCR assays applied to 67 historic stool samples. The study indicates highly variable effects of harsh nucleic acid extraction approaches depending on the real-time PCR assay used.


2021 ◽  
Vol 9 (2) ◽  
pp. 209
Author(s):  
Romy Razakandrainibe ◽  
Célia Mérat ◽  
Nathalie Kapel ◽  
Marc Sautour ◽  
Karine Guyot ◽  
...  

Human cryptosporidiosis remains underdiagnosed, and rapid/accurate diagnosis is of clinical importance. Diagnosis of the Cryptosporidium oocyst in stool samples by conventional microscopy is labor-intensive, time-consuming, and requires skillful experience. Thus, we aimed to evaluate the usefulness of a coproantigen enzyme-linked immunosorbent assay (ELISA) test in detecting Cryptosporidium spp. from fecal specimens. For this aim, we evaluated the performances of a commercial ELISA (CoproELISA Cryptosporidium kit, Savyon Diagnostics, Israel) for the detection of Cryptosporidium spp. in random clinical stool samples through a multicenter study. The sensitivity and specificity for coproantigen ELISA were 98.86% and 94.32%, respectively. The coproantigen ELISA results indicate that the simple, rapid, reliable, and standardized immunoassay test is sensitive and specific for routine diagnosis, and may be useful for large-scale epidemiological studies of cryptosporidiosis.


2017 ◽  
Vol 117 (2) ◽  
pp. 447-451 ◽  
Author(s):  
Marijo Parčina ◽  
Ingrid Reiter-Owona ◽  
Frank P. Mockenhaupt ◽  
Valerija Vojvoda ◽  
Jean Bosco Gahutu ◽  
...  

1995 ◽  
Vol 13 (2) ◽  
pp. 133-157 ◽  
Author(s):  
Benjamin Forest

The 1984 municipal incorporation of West Hollywood, California offers an opportunity to explore two related themes: (1) the role of place in the creation of identity generally, and (2) the role of place in the creation of sexual identity in particular. Work on the second subject has largely concentrated on the political economy of gay territories, although there has been an ongoing concern with the symbolic importance of these places. Although these studies have provided valuable insights on these themes, they do not reflect the renewed concern in humanistic geography with the normative importance of place, and the study of morally valued ways of life. These latter topics provide alternative avenues into questions of identity. In the coverage of the incorporation campaign, the gay press presented an idealized image of the city. In defining a new gay identity, the gay press utilized the holistic quality of place to weave together the ‘natural’ and cultural elements of West Hollywood. This idealized ‘gay city’ united the place's real and imagined physical attributes with social and personal characteristics of gay men. More simply, the qualities of the city itself expressed intellectual and moral virtues, such that characterizations of the city became part of a narrative defining the meaning of ‘gay’. This new gay male identity included seven elements: creativity, aesthetic sensibility, an orientation toward entertainment or consumption, progressiveness, responsibility, maturity, and centrality. The effort to create an identity centered on West Hollywood was relatively conservative in the sense that it was not a fundamental challenge to existing social and political systems. Rather, it reflected a strategy based on an ethnicity model, seeking to ‘demarginalize’ gays and to bring them closer to the symbolic ‘center’ of US society.


2017 ◽  
Vol 2 ◽  
pp. 61-64
Author(s):  
Kamal Raj Sapkota

Gram is important crop of Nepali and Indian farmers. Most of the people take gram as regular food. There are several edible food products prepared from gram. Gram is cultivated mostly in Birgunj (Parsa), Morang and Terai region. Recently in these states industrialization and infrastructure development work going very fast causing huge amounts of pollutants and particulate entering into the atmosphere. The purpose of this study is to explore the effect of corrosive pollutants on gram production and study tries to find the gaps of pH in the different areas. Growing urbanization and unplanned activities around the city area and River side have negatively affected the environment. Janapriya Journal of Interdisciplinary Studies Vol. 2, No.1 (December 2013), page: 61-64


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