Search results
Results From The WOW.Com Content Network
Mold spores are often spherical or ovoid single cells, but can be multicellular and variously shaped. Spores may cling to clothing or fur; some are able to survive extremes of temperature and pressure. Although molds can grow on dead organic matter everywhere in nature, their presence is visible to the unaided eye only when they form large ...
Mold illness isn’t easy to define, and the path from home mold growth to debilitating chronic health symptoms is complicated. But often the story starts like this: Moisture in a home can cause ...
More than half of adult workers in moldy/humid buildings suffer from nasal or sinus symptoms due to mold exposure. [11] Prevention of mold exposure and its ensuing health issues begins with the prevention of mold growth in the first place by avoiding a mold-supporting environment. Extensive flooding and water damage can support extensive mold ...
A. niger is a strict aerobe; therefore, it requires oxygen to grow. [11] The fungus can grow in a range of environmental conditions; it can grow at temperatures ranging from 6 to 47 °C. [12] As a mesophile, [13] its optimal temperature range is 35-37 °C. [11] It can tolerate pH ranging from 1.5 to 9.8. [12]
The body of mold consists of a thread-like root that invades the food, a stalk that rises above the food and may not be visible to the naked eye, and spores that form at the end of the stalks ...
The generally accepted threshold for mold growth is about 15% moisture content because the predominant cause of mold is excess water. Excess water can come from liquid water, as a result of leaks, or water vapor, as a result of high relative humidity due to improper storage, faulty humidifiers, or HVAC malfunctions.
Air sampling can be used to identify hidden mold and is often used to assess the effectiveness of control measures after remediation. An indoor mold air sampling campaign should be performed over the course of at least several days as the environmental conditions can lead to variations in the day-to-day mold concentration.
The ability of facultative anaerobic pathogens to survive without oxygen is important since their infection is shown to reduce oxygen levels in their host's gut tissue. [13] Moreover, the ability of facultative anaerobes to limit oxygen levels at infection sites is beneficial to them and other bacteria, as dioxygen can form reactive oxygen ...