نتایج جستجو برای: microbial control

تعداد نتایج: 1427967  

Maintaining optimum quality and eliminating dates of contamination, cleanup and packaging to extend the shelf life is one of the country's priorities and policies. Edible coatings with vegetable oils are one way to prevent the growth of microorganisms. In this study, the influence of the coating with natural zein and chitosan polymers along with the essential oil of Roman anise on the microbial...

Journal: :Applied and environmental microbiology 2008
Robert H Findlay Christine Yeates Meredith A J Hullar David A Stahl Louis A Kaplan

A field study was conducted to determine the microbial community structures of streambed sediments across diverse geographic and climatic areas. Sediment samples were collected from three adjacent headwater forest streams within three biomes, eastern deciduous (Pennsylvania), southeastern coniferous (New Jersey), and tropical evergreen (Guanacaste, Costa Rica), to assess whether there is biome ...

2015
Kyung-Seok Ko Kyoochul Ha In Chul Kong Michael Routledge

The potential effects of monotypic and binary metal oxide nanoparticles (NPs, ZnO, NiO, Co₃O₄ and TiO₂) on microbial growth were evaluated in sandy soil collected from artificial recharge sites. Microbial growth was assessed based on adenosine triphosphate (ATP) content, dehydrogenase activity (DHA), and viable cell counts (VCC). Microbial growth based on ATP content and VCC showed considerable...

Journal: :Physical review. E 2018
François J Peaudecerf Freddy Bunbury Vaibhav Bhardwaj Martin A Bees Alison G Smith Raymond E Goldstein Ottavio A Croze

The exchange of diffusive metabolites is known to control the spatial patterns formed by microbial populations, as revealed by recent studies in the laboratory. However, the matrices used, such as agarose pads, lack the structured geometry of many natural microbial habitats, including in the soil or on the surfaces of plants or animals. Here we address the important question of how such geometr...

Journal: :The Science of the total environment 2014
Mauricio Schoebitz Carmen Mengual Antonio Roldán

The reestablishment of autochthonous shrubs species is an essential strategy for recovering degraded soils under semiarid Mediterranean areas. A field experiment was carried out to assess the effectiveness of an immobilized microbial inoculant (Azospirillum brasilense and Pantoea dispersa) and the addition of organic olive residue (alperujo), for plant growth promotion of Cistus albidus L. and ...

Mohammad Azizzadeh Mohammad Hashemi, Saber Barkhori-Mehni Saeid Khanzadi,

The present study is aimed at evaluating the effect of functional alginate coating incorporated with Lactoperoxidase (LPOS) and Zataria multiflora Essential Oil (ZEO) or both as natural additives on microbial and chemical characteristics of rainbow trout fillets. Firstly, Different treatments of trout fillets were prepared using ZEO (0.5 and 1%) and LPOS (5%) individually and in combination...

حسینی, سیدمصطفی, سلطان دلال, محمد, صابرپور, فاطمه, طباطبائی, اکرم السادات, فاضلی فرد, پرستوالسادات, فخاریان, فرحناز, نجاریان, ابوالفضل, واحدی, سعید,

Background and Aims: The ready-to-eat foods, before and after preparation, usually kept in a refrigerator before consumption for a relatively long time, increase the risk of food poisoning. The aim of this study was to determine the effect of refrigeration in the fast-food shops on the microbial contamination of fast foods.Materials and Methods: A total of 100 samples, including 46 cooked beef ...

2015
Yuting Liang Liyou Wu Ian M. Clark Kai Xue Yunfeng Yang Joy D. Van Nostrand Ye Deng Zhili He Steve McGrath Jonathan Storkey Penny R. Hirsch Bo Sun Jizhong Zhou

UNLABELLED Spatial scaling is a critical issue in ecology, but how anthropogenic activities like fertilization affect spatial scaling is poorly understood, especially for microbial communities. Here, we determined the effects of long-term fertilization on the spatial scaling of microbial functional diversity and its relationships to plant diversity in the 150-year-old Park Grass Experiment, the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1392

this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...

2014
Mandour H. Abdalhai Mohanad Bashari Camel Lagnika Qian He Xiulan Sun

The effects of ultrasound treatment prior to the vacuum package and modified atmosphere package on physical, microbial and sensory characteristics of beef meat stored at refrigerator 4oC. Sampling was carried out on the 0, 3, 6, 10, 14, 18 and 22 day of storage. The initial bacteria loading was the slight same on all meat samples and microbial load increase over time. The extension of shelf lif...

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