Influence of materials on water for human consumption. Enhancement of microbial growth (EMG)

2015 ◽  
Keyword(s):  
Microbial Growth ◽  
Human Consumption

scholarly journals EFFICACY OF EDIBLE COATINGS ON JUJUBE (ZIZIPHUS MAURITIANA LAMK.) FRUITS : A REVIEW

2020 ◽  
Vol 21 (supplement 1) ◽  
Author(s):  
Chandan Kumar Rout ◽  
Sanjay Singh ◽  
Sanjay Singh
Keyword(s):  
Cold Storage ◽  
Nutritional Value ◽  
Microbial Growth ◽  
Nutritive Value ◽  
Storage Condition ◽  
Edible Coating ◽  
Ambient Condition ◽  
Human Consumption ◽  
Ziziphus Mauritiana ◽  
Edible Coatings

Nowadays, Jujube fruits have tremendously marketed value because of its rich nutritive value. Jujube has a meagre storage life (2-4 days) in ambient condition because of its highly perishable nature. The edible coating is an efficient approach to solve this problem as It contains edible substances like polysaccharide, proteins, lipids to protect the fruits. It is safe for the environment and human consumption. Nowadays, herbal edible coatings are utilized because of its nutritional value and beneficial for human health. Edible coatings on jujube maintained the quality, increase the shelf life and prevent microbial growth in both ambient and cold storage condition.

scholarly journals Assessment of Microbial Growth on the Surface of Materials in Contact with Water Intended for Human Consumption Using ATP Method

2010 ◽  
Vol 59 (4) ◽  
pp. 289-294 ◽  
Author(s):  
MACIEJ SZCZOTKO ◽  
ADAM KROGULSKI
Keyword(s):  
Drinking Water ◽  
Microbial Growth ◽  
Flow Reactor ◽  
Assessment Method ◽  
Positive Control ◽  
Negative Control ◽  
Assessment System ◽  
Human Consumption ◽  
Atp Assay ◽  
Short Time

Elaboration of an assessment method for plumbing materials contacting drinking water was the main purpose of this study. The investigation was conducted in 8 week cycles in dynamic conditions using a continuous flow reactor. Microbial growth was measured indirectly by a bioluminescence technique (ATP assay). Every week swabs from the surface of tested materials (polypropylene and different types of polyethylene), from the domestic market were collected and the level of bioluminescence was examined. The results obtained from the surface of tested materials were repeatable and clearly approximated those obtained from the surface of a negative control (stainless steel, low susceptibility for microbial growth). The level of bioluminescence (ATP) on the surface of positive control (paraffin, high susceptibility for microbial growth) was many times higher than that observed on other materials. The presented investigation was the main part of a validation process, which in short time will serve to initiate a complete assessment system for organic materials contacting drinking water.

scholarly journals The impact of biofilms on water quality in long pipelines

2009 ◽  
Vol 30 (1) ◽  
pp. 16
Author(s):  
Jason Plumb ◽  
Geoffrey Puzon ◽  
Maneesha Ginige
Keyword(s):  
Water Quality ◽  
Distribution Systems ◽  
Water Distribution ◽  
Microbial Growth ◽  
Potable Water ◽  
Bulk Water ◽  
Human Consumption ◽  
Opportunistic Pathogens ◽  
The Impact

Limited water availability and increased water demand necessitates the use of long pipelines to distribute potable and non-potable water for human consumption or other purposes. The effects of microbial growth and activity on the quality of distributed water have been studied for many years, although in recent years much of this focus has shifted to understanding the effects of biofilms, rather than planktonic microorganisms, on water quality. Recently, it was estimated that 95% of all biomass in water distribution systems is in the form of pipewall biofilms, with only 5% of all biomass in the bulk water phase. Under favourable conditions, biofilms can impact water quality by increasing disinfectant demand, creating taste and odour problems, harbouring opportunistic pathogens and contributing to the potential for discoloured water events. More research is required to inform the development of guidelines for the management of biofilms in long pipelines to ensure the delivery of safe drinking water and to minimise impacts on water quality.

Evaluation of Microbial Load from Canned Soya Milk Drinks in Malaysia

2016 ◽  
Vol 2 (1) ◽  
pp. 22-25
Author(s):  
Nur Amalina binti Mustafa ◽  
Muhammad Ashraf bin Redzuan ◽  
Muhamad Hazim bin Zuraimi ◽  
Muhamad Shuhaimi bin Shuib ◽  
Shahnaz Majeed ◽  
...  
Keyword(s):  
Culture Media ◽  
Storage Condition ◽  
Storage Conditions ◽  
Nutrient Agar ◽  
Microbial Load ◽  
Blood Agar ◽  
Human Consumption ◽  
Processing Unit ◽  
Soya Milk ◽  
Two Samples

Objective: Owing to the habit of consuming ready food among the citizens of Malaysia a study was conducted to evaluate 20 samples of canned soya milk for the presence of possible microbial content. The samples were collected randomly from shopping malls, restaurants and kiosk in Ipoh Malaysia. Methods: All samples collected across Ipoh, were subjected to test for presence bacteria in nutrient agar, blood agar and macConkey media. The possible microbial load was swapped from surface and soya milk content with a sterile cotton and streaked on nutrient agar, blood agar and macConkey culture media. The streaked petri plates were incubated for 48 hours at 37oC. Results: The study revealed negative microbial growth in all except two samples from the surface and soya milk content collected from a restaurant in nutrient agar and blood agar medium. The presence of microbes was conformed as gram positive staphylococcus sp. through gram staining. The positive growth may be imputed to poor storage condition at the restaurant. Conclusion: It can be computed from the study that the majority of the samples were free from bacterial growth, suggesting strong in house quality control mechanism at the processing unit and exquisite storage conditions in malls and kiosk suggesting that soya milk available in malls and kiosk are fit for human consumption.

Exposure of the Gulf of St. Lawrence grey seal Halichoerus grypus population to potentially zoonotic infectious agents

2020 ◽  
Vol 142 ◽  
pp. 105-118
Author(s):  
CC Sauvé ◽  
A Hernández-Ortiz ◽  
E Jenkins ◽  
F Mavrot ◽  
A Schneider ◽  
...  
Keyword(s):  
Meat Products ◽  
Halichoerus Grypus ◽  
Human Consumption ◽  
Infectious Agents ◽  
Erysipelothrix Rhusiopathiae ◽  
Public Health Significance ◽  
Domestic Livestock ◽  
Health Significance ◽  
Commercial Source ◽  
Polymerase Chain

The population of grey seals Halichoerus grypus in Canadian waters is currently used as a commercial source of meat for human consumption. As with domestic livestock, it is important to understand the occurrence in these seals of infectious agents that may be of public health significance and thus ensure appropriate measures are in place to avoid zoonotic transmission. This study examined the prevalence of antibodies against Brucella spp., Erysipelothrix rhusiopathiae, 6 serovars of Leptospira interrogans, and Toxoplasma gondii in 59 grey seals and determined by polymerase chain reaction (PCR) the presence of these potentially zoonotic agents in specific organs and tissues of seropositive animals. The presence of encysted Trichinella spp. larvae was also investigated by digestion of tongue, diaphragm and other muscle samples, but none were detected. Seroprevalence against Brucella spp. and E. rhusiopathiae was low (5 and 3%, respectively). All 59 seals tested had antibodies against L. interrogans, but no carrier of this bacterium was detected by PCR. Seroprevalence against T. gondii was 53%, and DNA of this protozoan was detected by PCR in 11/30 (37%) seropositive animals. Standard sanitary measures mandatory for commercialization of meat products for human consumption should greatly reduce the potential for exposure to these infectious agents. However, special consideration should be given to freezing seal meat for at least 3 d to ensure destruction of tissue cysts of T. gondii.

Living, Again: Population and Paradox in Recent Cinema

2016 ◽  
Vol 38 (1) ◽  
pp. 47-65
Author(s):  
Keith Clavin
Keyword(s):  
Human Population ◽  
Population Control ◽  
Human Consumption ◽  
Social Revolution ◽  
Drastic Increase

The last several decades have witnessed a drastic increase in ecological writing, but also a substantial lack in regards to the discussion of human population control. This article argues that the deficiency has been reproduced within several recent examples of eco-cinema, Snowpiercer and Mad Max: Fury Road. Despite strong conservationist themes and narratives encouraging social revolution, the films encounter similar theoretical difficulties, and enact similar resulting absences, within their representational fields. As a consequence, the environmental topics are filtered through an anthropocentric lens that generates a set of paradoxes regarding human consumption, sacrifice and the visualisation of future sustainable states.

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