scholarly journals A Novel Organism Lactobacillus wasatchensis: Growth, Detection, Gassing Defects in Cheese, Control Strategy and Future Research Opportunities: A Review

Author(s):  
Suresh Sutariya ◽  
Venkateswarlu Sunkesula ◽  
Khilendra Bhanduriya ◽  
Ankur Jhanwar

An obligate heterofermentative, Lactobacillus wasatchensis has been recently isolated from an aged Cheddar cheese produced in Logan, Utah. The potential of this organism in causing gassing defects in aged cheese has raised concern among cheese manufacturers. The recent attention on this organism is attributed to its economic impact due to low-quality cheese. This comprehensive review provides the details about Lb.wasatchensis characteristics, geographical distribution and effect of various physical and chemical factors such as heat treatment, carbohydrate utilization, pH, salt tolerance and growth temperature. Lb. wasatchensis utilize ribose as a primary source for its growth, however, it can slowly utilize galactose resulting in gas generation. The details of testing methods along with suggestions for future research on improving these techniques using a phage as a selective medium are provided in this review. Recent research developments for controlling the growth of Lb. wasatchensis, as well as potential research opportunities are summarized in this review.

2021 ◽  
Vol 100 (6) ◽  
pp. 546-554
Author(s):  
Nikolay V. Rusakov ◽  
Natalia V. Kalinina ◽  
Elena B. Gaponova ◽  
Mikhail Ye. Goshin ◽  
Ilya M. Banin

Introduction. The paper presents the hygienic assessment of the complex physical and chemical factors affecting patients and staff in the different premises of institutional medical organizations. Material and methods. The comprehensive hygienic assessment of the internal environment of medical institutions was based on three in-patient medical institutions (IMI). The research objects were medical wards, operating rooms, treatment rooms, dressing rooms, physiotherapy rooms, laboratory and diagnostic rooms, utility rooms. The study included measurements of the following parameters: microclimate, noise, electromagnetic fields level in different frequency ranges, ion regime, assessment of natural light, artificial light, insolation, gamma radiation level, measurements of concentrations of carbon dioxide, oxygen, ozone, radon, mercury vapor, and volatile organic compounds. Results. It is shown that in the hospital environment, a person is affected by complex physical factors. Microclimatic parameters are one of the most significant factors in the hospital environment that require constant monitoring. The control of the given factor is exceptionally substantial in IMI buildings that are not equipped with in-patients an air conditioning system. The highest noise levels were found in physiotherapy rooms and diagnostic rooms. The primary source of noise in medical rooms is working equipment, inwards - conversational speech. Both patients and medical workers were established to receive the main electromagnetic load in diagnostic rooms, laboratory rooms, and physiotherapy rooms. The assessment of the light environment showed that each of the examined rooms was provided with a sufficient level of natural light, and the duration of insolation in the treatment rooms corresponded to hygienic requirements. The highest levels of artificial light were in rooms with led lights. In the air of the examined rooms, light ions of both polarities were either absent, or their content was below the minimum required concentration. Higher concentrations of organic acids and chlorine-containing compounds were found in the surveyed premises of IMO compared to the air in other public buildings. The highest concentration of chemical compounds in the air was observed in wards and diagnostic rooms. Conclusion. The need for regular monitoring of physical and chemical factors affecting patients and staff in IMI is justified. A list of physical factors for carrying out risk-oriented control in hospital premises, taking into account their functional purpose, is required.


2017 ◽  
Vol 37 (4) ◽  
pp. 117-141 ◽  
Author(s):  
Krista Fiolleau ◽  
Theresa Libby ◽  
Linda Thorne

SUMMARY As the scope of the audit continues to broaden (Cohen, Krishnamoorthy, and Wright 2017), research questions in management control and internal control are beginning to overlap. Even so, there is little overlap between these fields in terms of published research to date. The purpose of this paper is to take a step in bridging the gap between the management control and the internal control literatures. We survey relevant findings from the extant management control literature published between 2003 and 2016 on dysfunctional behavior and the ways in which it might be mitigated. We then use the fraud triangle as an organizing framework to consider how the management control literature might help to address audit risk factors identified in SAS 99/AU SEC 316 (AICPA 2002). The outcome of our analysis is meant to identify and classify the extant management control literature of relevance to research on internal control in a manner that researchers new to the management control literature will find accessible. We conclude with a set of future research opportunities that can help to broaden the scope of current research in internal control.


2021 ◽  
pp. 152483802098554
Author(s):  
Stephanie Gusler ◽  
Jessy Guler ◽  
Rachel Petrie ◽  
Heather Marshall ◽  
Daryl Cooley ◽  
...  

Although evidence suggests that individuals’ appraisals (i.e., subjective interpretations) of adverse or traumatic life events may serve as a mechanism accounting for differences in adversity exposure and psychological adjustment, understanding this mechanism is contingent on our ability to reliably and consistently measure appraisals. However, measures have varied widely between studies, making conclusions about how best to measure appraisal a challenge for the field. To address this issue, the present study reviewed 88 articles from three research databases, assessing adults’ appraisals of adversity. To be included in the scoping review, articles had to meet the following criteria: (1) published no earlier than 1999, (2) available in English, (3) published as a primary source manuscript, and (4) included a measure assessing for adults’ (over the age of 18) subjective primary and/or secondary interpretations of adversity. Each article was thoroughly reviewed and coded based on the following information: study demographics, appraisal measurement tool(s), category of appraisal, appraisal dimensions (e.g., self-blame, impact, and threat), and the tool’s reliability and validity. Further, information was coded according to the type of adversity appraised, the time in which the appraised event occurred, and which outcomes were assessed in relation to appraisal. Results highlight the importance of continued examination of adversity appraisals and reveal which appraisal tools, categories, and dimensions are most commonly assessed for. These results provide guidance to researchers in how to examine adversity appraisals and what gaps among the measurement of adversity appraisal which need to be addressed in the future research.


2020 ◽  
Vol 11 ◽  
Author(s):  
Courtney B. Johnson ◽  
Jizhou Zhang ◽  
Daniel Lucas

Hematopoiesis in the bone marrow (BM) is the primary source of immune cells. Hematopoiesis is regulated by a diverse cellular microenvironment that supports stepwise differentiation of multipotent stem cells and progenitors into mature blood cells. Blood cell production is not static and the bone marrow has evolved to sense and respond to infection by rapidly generating immune cells that are quickly released into the circulation to replenish those that are consumed in the periphery. Unfortunately, infection also has deleterious effects injuring hematopoietic stem cells (HSC), inefficient hematopoiesis, and remodeling and destruction of the microenvironment. Despite its central role in immunity, the role of the microenvironment in the response to infection has not been systematically investigated. Here we summarize the key experimental evidence demonstrating a critical role of the bone marrow microenvironment in orchestrating the bone marrow response to infection and discuss areas of future research.


1934 ◽  
Vol 25 (4) ◽  
pp. 491-494 ◽  
Author(s):  
P. A. Buxton

During the last decade, entomologists have made progress in understanding the environment in which certain insects live; in particular, we begin to understand the effect of certain physical and chemical factors, which make up a part of the environment. With this gain in knowledge, it is sometimes possible to forecast outbreaks of insects and of diseases conveyed by them, and one can sometimes say that a particular alteration of the environment will result in loss or gain. But so far as mosquitos are concerned, one must admit that though much work has been devoted to the analytical study of the water in which the early stages are passed, the results are disappointing. A consideration of the published work suggests several reasons for this. Investigation into the ecology of the mosquito has had a vogue, and much of it has been done by workers who were isolated and whose knowledge of chemical technique and freshwater biology was limited. Apart from that, the inherent difficulties are great, for the worker must hunt for the limiting chemical and physical factors among a host of others which are doubtless unimportant, and there are few clues to indicate which of the chemical constituents of the water affects the mosquito. The data are therefore voluminous and it is difficult to reduce them to order and present them so that they can be readily understood.


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