Prevalence of culturable and non-culturable airborne fungi in a grain store in Delhi

Pandit, Terlika; Singh, Surender; Singh, Alka

doi:10.1007/bf02450036

Cited by 10 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aspergillus is widespread in the environment where they may colonize grains, leaves and soil. The predominance of Aspergillus and Penicillium is in agreement with Pandit, Singh and Singh (1995) who reported that Aspergillus, Penicillium, Cladosporium and smut were the dominant species in bakeries. Lugauskas, Krikstaponis, & Sveistyte (2004) found a variety of fungal types including: Cladosporium, Alternaria, Geotrichum, Oidiodendron, Rhizopus, Torula, Spegazzinia, Acremonium and Cochliobolus in grain mills.…”

Section: Discussionsupporting

confidence: 92%

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Awad¹

2007

Aerobiologia

View full text Add to dashboard Cite

A study was carried out on suspended dust, bacterial and fungal aerosols in a four-storey flourmill building located in Giza, Egypt. Airborne microorganisms were quantitatively isolated using liquid impinger and gravimetric samplers during the period from March 2004 to February 2005. Suspended dust varied from 1.96 to 16.3 mg m -3 and 0.69 to 1.8 mg m -3 in the indoor and outdoor environments, respectively. Suspended dust was significantly greater (P < 0.05) at bran package, double roller, purifiers and flour storage units in comparison to the outdoor reference site. The dust levels exceed the occupational exposure limit (OEL) of 0.5 mg m -3 for flour dust. Airborne microbial counts were found at median values, between sampling locations, ranged from 0 to >10 4 CFU m -3 . Gram-negative bacteria were found in small numbers (0-10 2 CFU m -3 ). The highest concentration of actinomycetes (>10 3 CFU m -3 ) was detected in the storage unit. Airborne fungal counts were found at the median values, between sampling locations, varied from 10 3 to 10 4 CFU m -3 . The counts of airborne bacteria and fungi were significantly greater (P < 0.05) at the purifiers and double roller mill units in comparison to the outdoor reference site using the liquid impinger sampler. Microbial levels associated with bulk deposited dust averaged between 10 5 and 10 6 CFU g -1 . Alcaligenes (5.4%) Pseudomonas (3.87%) and Enterobacter (3.1%) were the predominant Gram-negative species while Bacillus (29.4%) and Micrococci (13.9%) were the major components of Gram-positive bacteria. Aspergillus and Penicillium were the predominant fungal types indoor whereas Cladosporium (35.2%) and Aspergillus species (22.2%) were the predominant fungal types outdoor. A number of allergenic and toxigenic bioaerosols were found in the flourmill workplace.

show abstract

Section: Discussionsupporting

confidence: 92%

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Awad¹

2007

Aerobiologia

View full text Add to dashboard Cite

show abstract

“…Aspergillus was also the most dominant fungal group in the present study. A similar result was also found by Singh et al 29 and Pandit et al 12 in Delhi, India. Khan et al , 30 from Kuwait have also found Aspergillus species to be the predominant component of the aerospora.…”

Section: Discussionsupporting

confidence: 88%

“…Among the 35 fungal genera isolated, the prevalent fungal groups from all of the homes were different species of Aspergillus , Penicillium , Alternaria , and Cladosporium. Nonsporing isolates and yeast were also frequently isolated but they were grouped into “others.” Some of these fungi have been reported as the most common airborne fungi in different environments in other studies also 12 , 23 , 26 – 30 and have been considered to be the potent allergens in aerospora of many indoor and outdoor environments contributing to the increase in respiratory diseases in children as well as adults. 31 – 33 Aspergillus was the most diverse genera in terms of number of species identified in the present study.…”

Section: Discussionmentioning

confidence: 96%

Indoor Fungal Concentration in the Homes of Allergic/Asthmatic Children in Delhi, India

Sharma

Deval

Priyadarshi

et al. 2011

Allergy�Rhinol (Providence)

View full text Add to dashboard Cite

Allergy to fungi has been linked to a wide range of illnesses, including rhinitis and asthma. Therefore, exposure to fungi in home environment is an important factor for fungal allergy. The present study was aimed to investigate types of airborne fungi inside and outside the homes of asthmatic children and control subjects (nonasthmatic children). The dominant fungi were evaluated for their quantitative distribution and seasonal variation. The air samples were collected from indoors and immediate outdoors of 77 selected homes of children suffering from bronchial asthma/allergic rhinitis using Andersen volumetric air sampler. The isolated fungal genera/species were identified using reference literature, and statistical analysis of the dominant fungi was performed to study the difference in fungal concentration between indoor and immediate outdoor sites as well as in between different seasons. A total of 4423 air samples were collected from two indoor and immediate outdoor sites in a 1-year survey of 77 homes. This resulted in the isolation of an average of 110,091 and 107,070 fungal colonies per metric cube of air from indoor and outdoor sites, respectively. A total of 68 different molds were identified. Different species of Aspergillus, Alternaria, Cladosporium, and Penicillium were found to be the most prevalent fungi in Delhi homes, which constituted 88.6% of the total colonies indoors. Highest concentration was registered in autumn and winter months. Total as well as dominant fungi displayed statistically significant differences among the four seasons (p < 0.001). The largest number of isolations were the species of Aspergillus (>40% to total colony-forming units in indoors as well as outdoors) followed by Cladosporium spp. Annual concentration of Aspergillus spp. was significantly higher (p < 0.05) inside the homes when compared with outdoors. Most of the fungi also occurred at a significantly higher (p < 0.001) rate inside the homes when compared with immediate outdoors. Asthmatic children in Delhi are exposed to a substantial concentration of mold inside their homes as well as immediate outdoor air. The considerable seasonal distributions of fungi provide valuable data for investigation of the role of fungal exposure as a risk for respiratory disorders among patients suffering from allergy or asthma in Delhi.

show abstract

“…The prevalent fungal groups from all the sampling sites were Cladosporium, non-sporing isolates, Alternaria, Pencillium and Asperigillus, some of which have been reported as the most common airborne fungi in different environments in other studies Pandit et al, 1995;Rosas et al, 1997;Waisel et al, 1997;Picco and Rodolfi, 2000;Shelton et al, 2002;Huang et al, 2002;Hargreaves et al, 2003;Kuder, 2003;Adhikari et al, 2004). Cladosporium, comprising more than one third of the collected samples, was the most dominant fungal group in the present study.…”

Section: Discussionmentioning

confidence: 57%

“…It was reported that the dominant fungi were Cladosporium, Alternaria, Penicillium, Aspergillus in the atmosphere (Pandit et al, 1995;Singh et al, 1995;Rosas et al, 1997;Waisel et al, 1997;Picco and Rodolfi, 2000;Huang et al, 2002;Shelton et al, 2002;Hargreaves et al, 2003;Kuder, 2003;Adhikari et al, 2004), and their concentrations differed from place to place because of local environmental variables, fungal substrates, and human activities (Banerjee et al, 1987;Li and Kendrick, 1994;Hameed and Khodr, 2001;Shelton et al, 2002). However, little is known about the species, number, and size distribution of airborne fungi in Beijing.…”

Section: Introductionmentioning

confidence: 99%

Culturable airborne fungi in outdoor environments in Beijing, China

Fang

Ouyang

et al. 2005

Science of The Total Environment

148

101

View full text Add to dashboard Cite

Airborne fungi are being proposed as a cause of adverse health effects. They may adversely affect human health through allergy, infection, and toxicity. Moreover, they have a great influence on urban air quality in Beijing. In this study, a systematical survey on the culturable airborne fungi was carried out for 1 year in Beijing urban area. Fungal samples were collected for 3 min, three times each day, and continued for three consecutive days of each month with FA-1 sampler from three sampling sites. Results showed that the culturable fungal concentrations ranged from 24 CFU (Colony forming units) /m 3 to 13960 CFU/m 3 , and the mean and median was 1165 CFU/m 3 and 710 CFU/m 3 , respectively. Fungal concentrations in the greener area around the Research Center for Eco-Environmental Sciences (RCEES) and Beijing Botanical Garden (BBG) were significantly higher than in the densely urban and highly trafficked area of Xizhimen (XZM) (***Pb0.001), but no significant difference was found between RCEES and BBG ( PN0.05). The variation of fungal concentrations in different seasons was significant in RCEES and BBG, where the concentrations were higher in Summer and Autumn, and lower in Spring and Winter. However, there were no significant differences in fungal concentrations between the Spring and the Winter for three sampling sites ( PN0.05). Fourteen genera, including 40 species of culturable fungi, were identified in this study. Penicillium, with the most abundant species, which comprised more than 50% of the total isolated fungal species. Cladosporium were the most dominant fungal group, and contributed to more than one third of the total fungal concentration, followed by non-sporing isolates, Alternaria, Pencillium and Asperigillus. The concentration percentage of Cladosporium was significantly higher in RCEES than in XZM (*Pb0.05), and the concentration percentages of Penicillium (**Pb0.01) and Aspergillus (*Pb0.05) were higher in XZM than in RCEES and in BBG. For other groups' concentration percentages, no significant differences were observed among the sampling sites. The distribution pattern of airborne fungi presented log-normal distribution. The highest proportion of culturable fungi was detected in stage 4 (2.0-3.5 Am), and the lowest was in stage 6 (b1.0 Am). D

show abstract

Prevalence of culturable and non-culturable airborne fungi in a grain store in Delhi

Cited by 10 publications

References 8 publications

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Indoor Fungal Concentration in the Homes of Allergic/Asthmatic Children in Delhi, India

Culturable airborne fungi in outdoor environments in Beijing, China

Contact Info

Product

Resources

About