Environmental Sample Incubation
Environmental Sample Incubation - Related Videos
09:17
Detection of Bacteriophages in Environmental Samples
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Alex Wassimi Viruses are a unique group of biological entities that infect both eukaryotic and prokaryotic organisms. They are obligate parasites that have no metabolic capacity, and in order to replicate, rely on host metabolism to produce viral parts that self-assemble inside host cells. Viruses are ultramicroscopic—too small to be viewed with the light microscope, visible only with...
10:41
Carbon and Nitrogen Analysis of Environmental Samples
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Elemental Analysis is a method used to determine elemental composition of a material. In environmental samples such as soils, scientists are particularly interested in the amounts of two ecologically important elements, nitrogen and carbon. Elemental analysis by the flash combustion technique works by oxidizing the sample with a catalyst through combustion in a high-temperature chamber. The products of combustion are...
08:58
High-Throughput Measurement and Classification of Organic P in Environmental Samples
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Cited by 6 •
2011
This protocol describes a high-throughput method of enzymatic hydrolysis that utilizes a microplate reader to measure and classify soil phosphorus as P monoesters, P diesters and inorganic P. Up to 96 samples can be measured at one time in a standard laboratory.
12:04
RNA Analysis of Environmental Samples Using RT-PCR
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Bradley Schmitz Reverse transcription-polymerase chain reaction (RT-PCR) involves the same process as conventional PCR — cycling temperature to amplify nucleic acids. However, while conventional PCR only amplifies deoxyribonucleic acids (DNA), RT-PCR enables the amplification of ribonucleic acids (RNA) through the formation of complementary DNA (cDNA). This enables RNA-based organisms...
08:04
Use of a Filter Cartridge for Filtration of Water Samples and Extraction of Environmental DNA
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Cited by 133 •
2016
We describe a protocol for filtration of water samples with a filter cartridge and extraction of environmental DNA (eDNA) without having to cut open the housing to remove the filter. This protocol is developed for metabarcoding eDNA from fishes, but is also applicable to eDNA from other organisms.
FAQs
Controlling temperature, oxygen availability, moisture, light, and nutrient supply makes biological changes easier to attribute to the sample’s response rather than shifting laboratory conditions. Researchers can then compare activity across environmental samples or incubation periods using outcomes such as microbial growth, altered chemical composition, or gas production. This controlled setting supports more interpretable biological characterization.
Oxygen availability and light are adjustable conditions that help determine which biological responses become apparent in an environmental sample. Changing these factors can influence whether researchers observe microbial growth, chemical changes, or gas production during the defined incubation period. Including these variables in the experimental design helps connect observed outcomes with the environmental conditions being investigated.
A defined incubation period gives microorganisms and biochemical processes time to develop in a controlled setting. Researchers can monitor changes across that period, including colony formation, altered chemical composition, or gas production. These outcomes provide evidence about biological activity and help characterize microbial communities or compare how samples respond under specified environmental conditions.
Incubation provides culture-based evidence by allowing observable outcomes such as colony formation, microbial growth, chemical changes, or gas production to develop. Molecular methods provide a complementary approach when researchers investigate environmental biology. Using both perspectives can support broader interpretation of microbial communities, ecosystem function, biodegradation, and responses to changing conditions without relying on a single type of evidence.
Researchers place soil, water, sediment, or another environmental sample under selected laboratory conditions, regulate variables such as temperature, oxygen availability, moisture, light, and nutrient supply, and maintain the sample for a defined period. They then examine biological or biochemical changes, including growth, colony formation, chemical composition, or gas production, to characterize the sample’s response.
The method is useful when researchers need to connect environmental samples with measurable biological or biochemical changes. Observations from incubated soil, water, or sediment can help characterize microbial communities, assess nutrient cycling, and evaluate environmental contamination. The same approach also supports investigations of ecosystem function, biodegradation, and biological responses to changing environmental conditions.