Harmful biological agents in the working environment of dairy plant workers

2018 ◽  
Vol 559 (4) ◽  
pp. 8-11
Author(s):  
Agata Stobnicka
Keyword(s):  
Preventive Measures ◽  
Raw Milk ◽  
Biological Agents ◽  
Working Environment ◽  
Occupational Hazards ◽  
Milk Processing ◽  
Adverse Health Outcomes ◽  
Home Based ◽  
Processing Plants ◽  
Dairy Plant

Occupational hazards for dairy plant workers include contact with bioaerosols emitted during the production process, contact with raw milk, or with animals in the case of small home-based milk processing plants. Dairy plant workers can be exposed to biological agents, such as bacteria, fungi and viruses, which are responsible for various diseases and adverse health outcomes. Therefore, reliable risk assessment and appropriate preventive measures are key to occupational hazard prevention among this group of workers.

Molecular Subtyping and Characterization of Psychrotolerant Endospore-Forming Bacteria in Two New York State Fluid Milk Processing Systems

2007 ◽  
Vol 70 (10) ◽  
pp. 2354-2364 ◽  
Author(s):  
JASON R. HUCK ◽  
NICOLE H. WOODCOCK ◽  
ROBERT D. RALYEA ◽  
KATHRYN J. BOOR
Keyword(s):  
Control Strategies ◽  
New York State ◽  
Raw Milk ◽  
Effective Control ◽  
Processing Plant ◽  
Milk Processing ◽  
High Temperature Short Time ◽  
Processing Plants ◽  
Processing Continuum ◽  
Fluid Milk

Psychrotolerant endospore-forming bacteria Bacillus and Paenibacillus spp. are important spoilage organisms in fluid milk. A recently developed rpoB subtyping method was applied to characterize the diversity and phylogenetic relationships among Bacillus and related sporeformers associated with milk processing systems. Milk samples representing the processing continuum from raw milk to pasteurized products were collected from two fluid milk processing plants, held at 6°C uptothe code date that had been established by each processing plant (i.e., either 18 or 21 days), and plated for bacterial enumeration throughout storage. Bacterial colonies selected to represent the visible diversity in colony morphology on enumeration plates were examined further. Among 385 bacterial isolates characterized, 35% were Bacillus spp., and 65% were Paenibacillus spp. A total of 92 rpoB allelic types were identified among these isolates, indicating considerable diversity among endospore-forming spoilage organisms present in fluid milk systems. Of the 92 allelic types identified, 19 were isolated from samples collected from both processing plants. The same rpoB allelic types were frequently identified in paired raw milk and packaged product samples, indicating that Bacillus and Paenibacillus spp. can enter dairy processing systems through raw milk. Certain subtypes were found exclusively in pasteurized samples, including those that were temporally independent, suggesting the possibility of in-plant sources for these spoilage organisms, including through the persistence of selected subtypes in processing plants. Development of effective control strategies for the diverse array of psychrotolerant endospore-forming organisms that currently limit the shelf lives of high-temperature short-time fluid milk products will require comprehensive, integrated efforts along the entire milk processing continuum.

scholarly journals Quality of raw milks in three milk processing plants in Cordoba

2014 ◽  
Vol 6 (1) ◽  
pp. 103 ◽  
Author(s):  
VIRGINIA RODRÍGUEZ, R. ◽  
ALFONSO CALDERÓN R. ◽  
OSCAR VERGARA G.
Keyword(s):  
Physicochemical Parameters ◽  
Microbiological Quality ◽  
Raw Milk ◽  
Fecal Coliforms ◽  
Processing Plant ◽  
Normal Range ◽  
Dual Purpose ◽  
Milk Processing ◽  
Processing Plants

An important condition in dairy processing plant is to obtain materials of excellent physicochemical and microbiological quality to reduce public health risks. High counts of mesophilic show contamination and lack of good manipulation in milking and milk conservation. Coliforms are a demonstration of contamination with fecal material. The norms in Colombia establish the mesophilic count as standard of microbiological quality. The purpose of this study was to determine the physicochemical and microbiological quality and health of the udders, in raw milk from dual purpose farms, supplying three milk processing plants in Cordoba (Colombia). 149 raw milk samples were collected of tree processing plants in Cordoba department. Physicochemical parameters set out in Decree 616 of 2006 were determined and aerobic mesophilic, total coliforms, fecal coliforms, and somatic cell count were established too. The variables obtained were analyzed by descriptive statistics using SAS. The physicochemical parameters were within the normal range but averages of mesophilic and somatic cells counts were high, which allows conclude that the physicochemical quality is good, but there are shortcomings in the microbiological quality and in the udder health, and is on the farms devoted to milk production where must be implemented and certified excellent management and prevention practices.

Hygienic Conditions and Microbial Contamination in Six Ewe's-Milk-Processing Plants in Sardinia, Italy

1997 ◽  
Vol 60 (3) ◽  
pp. 283-287 ◽  
Author(s):  
SOFIA COSENTINO ◽  
FRANCESCA PALMAS
Keyword(s):  
Microbial Contamination ◽  
Microbiological Quality ◽  
Raw Milk ◽  
Raw Material ◽  
Processing Conditions ◽  
Technological Parameters ◽  
Milk Processing ◽  
Processing Plants ◽  
Ewe's Milk

In Sardinia, ewe's milk is almost exclusively used for cheese manufacture, and it is usually processed in small dairies which do not have sufficient technical and scientific knowledge for largescale controlled production. This study was carried out to identify the sources of contamination and the kinds of contaminating microorganisms present in six ewe's milk processing plants in Sardinia. Samples were collected during production hours three times over a period of 6 months. Raw milk, heat-treated milk, curd, 30-day-old cheese, lactic culture, rennet, and water used in processing lines were analyzed and the microbial contamination of air and surfaces was evaluated. Total mesophilic aerobic counts, coliforms, Escherichia coli, gram-negative psychrotrophs, Staphylococcus aureus, Salmonella spp., Listeria spp., yeasts, and molds were determined. Our survey confirmed that the production offood of high microbiological quality is strictly dependent on the microbiological quality of the raw material, optimization of the parameters for the heat treatment, water of potable quality, well-defined cleaning and disinfection procedures, and properly hygienic processing conditions. In fact, only plants characterized by raw milk and rennet of acceptable quality, generally clean work surfaces, and low microbial counts in the air of working areas made finished products of high microbiological quality. Standardization of technological parameters and achievement of properly hygienic processing conditions will help minimize the risk of developing food-safety problems, in compliance with public health regulatory requirements. These actions would help guarantee an adequate quality of Sardinian ewe's milk cheeses and might also lead to access to the international market.

Environmental Survey for Listeria Species in California Milk Processing Plants

1990 ◽  
Vol 53 (3) ◽  
pp. 198-201 ◽  
Author(s):  
BRUCE R. CHARLTON ◽  
HAILU KINDE ◽  
LEON H. JENSEN
Keyword(s):  
Listeria Monocytogenes ◽  
Environmental Samples ◽  
Raw Milk ◽  
Plant Location ◽  
Milk Product ◽  
Isolation Rate ◽  
Milk Processing ◽  
Processing Plants ◽  
Manufacturing Activity ◽  
Positive Results

This survey was undertaken to determine the prevalence of Listeria monocytogenes and Listeria spp. in environmental samples obtained from milk processing plants located throughout California. Identification of Listeria spp. other than L. monocytogenes was not made. Milk processing plants were categorized as to type of product produced and subdivided into areas based on manufacturing activity occurring in that area. A total of 597 environmental samples from 156 plants were analyzed in the six month period of January through July 1987. Listeria spp. were isolated from 75 (12.6%) of the samples. Thirty-eight of the Listeria spp. (50.7%) were identified as L. monocytogenes. Forty-six plants (29.5%) yielded positive results for Listeria spp., of which, 31 plants (19.9%) were positive for L. monocytogenes. Listeria was recovered more frequently from fluid milk product plants and frozen milk product plants. Likewise, Listeria was isolated most frequently from the packaging-filling room location within a plant and least frequently from the raw milk receiving room. Although Listeria spp. was isolated most frequently from the conveyor site, the drain site within a plant location gave a Listeria isolation rate similar to the total number of Listeria positive sites within that plant location.

scholarly journals Identyfication and Assessment of Occupational Hazards in the Working Environment of the Laser Cutter Operator

2020 ◽  
Vol 2 (1) ◽  
pp. 121-130
Author(s):  
Michal Palega ◽  
Marcin Krause
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Research Methods ◽  
Risk Score ◽  
Preventive Measures ◽  
Health And Safety ◽  
Occupational Risk ◽  
Working Environment ◽  
Occupational Hazards ◽  
Score Method

AbstractThe purpose of this article was to identify occupational hazards at the laser cutter operator's workplace and to assess occupational risk. The article also indicates the basic requirements for the analyzed workplace. Research methods included: observation of the workplace (using a checklist), interviews with the employer, selected employees and a health and safety specialist, as well as analysis of the company's internal documents. The occupational risk assessment carried out at work using the Risk Score method showed that there are many different risk factors for accidents or diseases related to the work performed at the position of the laser cutter operator. However, thanks to the preventive measures applied, they are in the analyzed workplace at an acceptable (acceptable) level.

scholarly journals Effects of the length of the milk collection route on the choice of the locality of milk processing

2009 ◽  
Vol 55 (No. 10) ◽  
pp. 501-507
Author(s):  
I. Bošková
Keyword(s):  
Central Europe ◽  
Raw Milk ◽  
Transport Costs ◽  
Milk Processing ◽  
Dairy Plant ◽  
The Difference ◽  
The Cost ◽  
The Impact ◽  
The Eu ◽  
Made In

The goal of the research was to identify how important was the distance between the milk producer and the milk processor in their decision of which dairy plant would do the processing. The study should indicate if the advantage of a lower price offered by the distant milk producer would be eliminated or preserved by the transport costs. In the study, the cost of various lengths of milk collection routes in Central Europe has been examined. The difference in cost, whether a short or long journey was travelled, was compared to the range of raw milk prices within the chosen territories in Central Europe. The results proved that the milk collection costs in Europe enable rather long journeys, from the producer to the processor, to be made. In three of the four examined regions, the usual collection route of 200 km followed by an additional journey of 400 km enabled the preservation of the milk price advantage gained due to this journey. The feasibility of long collection journeys would reduce the impact of the success of local processors on the economics of the surrounding milk producers and vice-versa and could play an important role in the movement of raw milk in Europe in the ongoing concentration and liberalization process of milk production in the EU.

A Survey of Four Fluid Milk Processing Plants for Airborne Contamination Using Various Sampling Methods

1992 ◽  
Vol 55 (1) ◽  
pp. 38-42 ◽  
Author(s):  
TYH-JENQ REN ◽  
JOSEPH F. FRANK
Keyword(s):  
Sampling Methods ◽  
Raw Milk ◽  
Particle Counter ◽  
Milk Processing ◽  
Airborne Contamination ◽  
Processing Plants ◽  
Particle Counts ◽  
Milk Storage ◽  
Andersen Sampler ◽  
Fluid Milk

Air in four commercial fluid milk plants was sampled for microbiological and nonmicrobiological particles over a 4-month period. An Andersen two-stage and Ross-Microban sieve samplers, a Biotest RCS sampler, and a Met-one laser particle counter were used to sample air. Air was sampled two to three times per day in raw milk storage, processing, and filling areas. Viable particle counts per 100 L air obtained with the Andersen sampler were 2.03 ± 0.41 (log10 Mean ± SD), 2.26 ± 0.57, and 2.41 ± 0.70 in raw milk storage, processing, and filling areas, respectively. These levels were significantly (p<0.05) greater than those obtained using the RCS and Ross-Microban samplers. Overall correlations of the Ross-Microban and RCS samplers with the Andersen sampler were r2 = 0.71 and 0.62, respectively. Correlations between Andersen sampler results and number of total particles greater than 0.5 μm were r2 = 0.36 in raw milk storage, 0.15 in the processing area, and 0.18 in the filling area.

Hygienic assessment of working conditions working in LLC “Oil and gas equipment plant»

2020 ◽  
pp. 733-733
Author(s):  
V. P. Rodkin ◽  
A. N. Usatov ◽  
V. G. Demchenko
Keyword(s):  
Working Conditions ◽  
Oil And Gas ◽  
Preventive Measures ◽  
Working Environment

The authors conducted a hygienic assessment of working conditions of employees in LLC «Oil and gas equipment plant» on the basis of research of the Center of Hygiene and Epidemiology in the Omsk region. The factors of the working environment and working conditions of workers having an impact on their health. Are studied. Hygiene-based preventive measures have been developed.

Occupational Hazards of Xylene and its Preventive Measures

2019 ◽  
Vol 10 (12) ◽  
pp. 2260
Author(s):  
Govindarajan Sumathy ◽  
Bhaskaran Sathyapriya ◽  
Balasubramanian Chandrakala ◽  
Jinu Merlin Koshy ◽  
Jayamathi Govindaraj ◽  
...  
Keyword(s):  
Preventive Measures ◽  
Occupational Hazards
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