نتایج جستجو برای: garden lettuce

تعداد نتایج: 16612  

Journal: :Applied and environmental microbiology 2008
M T Brandl R Amundson

Outbreaks of Escherichia coli O157:H7 infections have been linked increasingly to leafy greens, particularly to lettuce. We present here the first evidence that this enteric pathogen can multiply on the leaves of romaine lettuce plants. The increases in population size of E. coli O157:H7 in the phyllosphere of young lettuce plants ranged from 16- to 100-fold under conditions of warm temperature...

Journal: :Journal of food protection 2011
Manan Sharma Sudesna Lakshman Sean Ferguson David T Ingram Yaguang Luo Jitu Patel

Fresh-cut leafy greens contaminated with Escherichia coli O157:H7 have caused foodborne outbreaks. Packaging conditions, coupled with abusive storage temperatures of contaminated lettuce, were evaluated for their effect on the potential virulence of E. coli O157:H7. Shredded lettuce was inoculated with 5.58 and 3.98 log CFU E. coli O157:H7 per g and stored at 4 and 15°C, respectively, for up to...

2014
Jason B. Thomas

Contamination of food crops by the human pathogen Salmonella is a food safety threat worldwide. Though using treated wastewater for irrigation is a sustainable practice, it may introduce trace levels of Salmonella that may contaminate food crops. Salmonella could develop resistance to antibiotics present in wastewater. The overall goal of the project is to increase the understanding of the publ...

Journal: :Journal of agricultural and food chemistry 2005
David Beltrán María V Selma Alicia Marín María I Gil

The use of ozonated water as a sanitizer to extend the shelf life of fresh-cut lettuce and the effect on the antioxidant constituents (polyphenols and vitamin C) were investigated. Fresh-cut iceberg lettuce (Lactuca sativa L.) was washed at 4 degrees C using three different ozonated water dips [10, 20, and 10 activated by ultraviolet C (UV-C) light mg L(-1) min total ozone dose], and the dips w...

Journal: :iranian journal of virology 0
f heidari department of plant protection, faculty of agricultural sciences and engineering, college of agriculture and natural resources, university of tehran, karaj, iran m koohi-habibi department of plant protection, faculty of agricultural sciences and engineering, college of agriculture and natural resources, university of tehran, karaj, iran gh mosahebi department of plant protection, faculty of agricultural sciences and engineering, college of agriculture and natural resources, university of tehran, karaj, iran

background and aims: the causal agents of viral lettuce big vein disease are two viruse, lettuce big vein associated virus (varicosavirus) and mirafiori lettuce virus (ophiovirus). these viruses have coat proteins of similar size but have different morphologies and serologically unrelated.the purpose of this study was to distinguish and detect lbvav and milv in lettuce fields in tehran province...

F Heidari , GH Mosahebi , M Koohi-Habibi ,

Background and Aims: The causal agents of viral lettuce big vein disease are two viruse, Lettuce big vein associated virus (Varicosavirus) and Mirafiori lettuce virus (Ophiovirus). These viruses have coat proteins of similar size but have different morphologies and serologically unrelated.The purpose of this study was to distinguish and detect LBVaV and MiLV in lettuce fields in Tehran Province...

Objective: According to the traditional medicine,lettuce can affect nerve conduction velocity and memory. So, to investigate the effect of lettuce seeds extract on body activities, lettuce seeds were used. Materials and Methods: In the present study, the effects of lettuce (Lactuca sativa) seeds extract consumption (in drinking water) on T4 level...

Journal: :به نژادی نهال و بذر 0
ناهید آملی مرکز تحقیقات کشاورزی و منابع طبیعی مازندران

babol local lettuce as a landrace in mazandaran, has cultivated for many years. local lettuce is a mixture of different genotypic and phenotypic forms which affects its marketability. it was purified by individual selection method during a three year priod (1998-2000) based on the selection for characteristics such as shape of bush, closed pome high yield, good marketability and resistance to d...

ایرانی بهبهانی, هما, رضایی‌پور, مریم,

As countryside of Kashan, Fin region has always been benefitting from more favorable climate owing to its proximity to Dandaneh Mt. as well as Fin spring. Therefore, so many historical gardens have been built there among which is the famous Fin garden, which is, currently the outstanding historical monument of this area. However, there are still remaining ruins of an older garden called Bagh-i-...

2010
Masahumi Johkan Kazuhiro Shoji Fumiyuki Goto Shin-nosuke Hashida Toshihiro Yoshihara

In this study, we determined the effects of raising seedlings with different light spectra such as with blue, red, and blue + red light-emitting diode (LED) lights on seedling quality and yield of red leaf lettuce plants. The light treatments we used were applied for a period of 1 week and consisted of 100 mmol m s of blue light, simultaneous irradiation with 50 mmol m s of blue light and 50 mm...

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