Antifungal properties of silver nanoparticles against indoor mould growth

2015 ◽  
Vol 521-522 ◽  
pp. 305-314 ◽  
Author(s):  
Anna Ogar ◽  
Grzegorz Tylko ◽  
Katarzyna Turnau
Keyword(s):  
Silver Nanoparticles ◽  
Mould Growth ◽  
Antifungal Properties ◽  
Indoor Mould

scholarly journals Exposure to Indoor Mouldy Odour Increases the Risk of Asthma in Older Adults Living in Social Housing

2019 ◽  
Vol 16 (14) ◽  
pp. 2600 ◽  
Author(s):  
Loveth Moses ◽  
Karyn Morrissey ◽  
Richard A. Sharpe ◽  
Tim Taylor
Keyword(s):  
Older Adults ◽  
Older People ◽  
Asset Management ◽  
Social Housing ◽  
Western World ◽  
Mould Growth ◽  
Building Type ◽  
Indoor Mould ◽  
Mould Contamination

Background: Indoor dampness is thought to affect around 16% of European homes. It is generally accepted that increased exposure to indoor dampness and mould contamination (e.g., spores and hyphae) increases the risk of developing and/or exacerbating asthma. Around 30% of people in the Western world have an allergic disease (e.g., allergy, wheeze and asthma). The role of indoor mould contamination in the risk of allergic diseases in older adults is yet to be fully explored. This is of interest because older people spend more time indoors, as well as facing health issues due to the ageing process, and may be at greater risk of developing and/or exacerbating asthma as a result of indoor dampness. Methods: Face-to-face questionnaires were carried out with 302 participants residing in social housing properties located in South West England. Self-reported demographic, mould contamination (i.e., presence of mould growth and mouldy odour) and health information was linked with the asset management records (e.g., building type, age and levels of maintenance). Multivariate logistic regression was used to calculate the odd ratios and confidence intervals of developing and/or exacerbating asthma, wheeze and allergy with exposure to reported indoor mould contamination. We adjusted for a range of factors that may affect asthma outcomes, which include age, sex, current smoking, presence of pets, education, and building type and age. To assess the role of mould contamination in older adults, we compared younger adults to those aged over 50 years. Results: Doctor-diagnosed adult asthma was reported by 26% of respondents, 34% had current wheeze while 18% had allergies. Asthma was common among subjects exposed to reported visible mould (32%) and reported mouldy odour (42%). Exposure to visible mould growth and mouldy odour were risk factors for asthma, but not for wheeze or allergy. Exposure to mouldy odour increased the risk of asthma in adults over the age of 50 years (odds ratio (OR) 2.4, 95% confidence interval (CI) 1.10–5.34) and the risk was higher for females than for males (OR 3.5, 95% CI 1.37–9.08). These associations were modified by a range of built environment characteristics. Conclusions: We found that older adults living in social (public) housing properties, specifically women, may be at higher risk of asthma when exposed to mouldy odour, which has a number of implications for policy makers and practitioners working in the health and housing sector. Additional measures should be put in place to protect older people living in social housing against indoor damp and mould contamination.

Biogenic silver nanoparticles synthesised from Zingiber officinale and its antifungal properties

2014 ◽  
Vol 3 (3) ◽  
pp. 251
Author(s):  
Malini Soundararajan ◽  
Neha Deora ◽  
Lynette Lincoln ◽  
Purandhi Roopmani ◽  
Shikha Gupta ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Zingiber Officinale ◽  
Biogenic Silver Nanoparticles ◽  
Antifungal Properties

scholarly journals Normal background levels of air and surface mould reserve in English residential building stock: A preliminary study towards benchmarks based on NAHA measurements

2020 ◽  
Author(s):  
Yasemin Didem Aktas ◽  
Yasemin Didem Aktas ◽  
Yasemin Didem Aktas ◽  
Yasemin Didem Aktas ◽  
Yasemin Didem Aktas ◽  
...  
Keyword(s):  
Indoor Environment ◽  
Surface Cleaning ◽  
National Standards ◽  
Mould Growth ◽  
Building Stock ◽  
Local Climate ◽  
Background Levels ◽  
Water Damage ◽  
Normal Background ◽  
Indoor Mould

This paper reports results obtained from a surface (both visually clean and dirty/dusty surfaces) and active (aggressive or activated) air testing scheme on 140 residential rooms in England, without visible water damage or mould growth, along with a few rooms with visible mould growth/water damage tested for comparison purposes. The aim is to establish normal background levels of mould in non-water-damaged interiors to benchmark a normal indoor environment, and in turn when there is a need for further investigation, and, possibly, remediation. Air and surface mould was quantified based on the activity of β-N-acetylhexosaminidase (EC 3.2.1.52; NAHA). The obtained readings showed a log-normal distribution. 98% of the samples obtained from visually clean surfaces were equal to or less than 25 relative fluorescence units (RFU), which is suggested to be the higher bound for the range which can be used as a success criterion for surface cleaning/remediation in non-problem buildings. Of samples obtained from visually dirty/dusty surfaces, around 98% were below 450 RFU, which is suggested to define the lower-bound for abnormally high levels of mould, rare even on dirty/dusty surfaces. Similarly, around 98% of the air samples were found to have 1700 RFU or below. Values above 1700 RFU are therefore deemed unlikely in a non-problem indoor environment and can be indicative of a possible problem inducing mould growth. The samples with values below 1700 were further divided into three proposed sub-categories. Finally, the obtained RFU values and the suggested benchmarks were compared to those obtained from 17 non-residential indoor environments in Copenhagen tested previously, and the benchmarks that are currently used in Danish national standards, and they were both found to be highly congruent, suggesting that local climate regimes and room functions might not be as influential on indoor mould levels as commonly thought, or that the nuances between England and Denmark in terms of these factors are not strong enough to lead to sizable changes in the typical indoor mould levels in these countries.

scholarly journals Antifungal Properties of Silver Nanoparticles Synthe‌sized From Capparis Spinosa Fruit

2019 ◽  
pp. 43-50
Author(s):  
Katrin Ebrahimi ◽  
Mahboobeh Madani ◽  
Behnam Ashrafi ◽  
Sima Shiravand ◽  
Asghar Sepahvand
Keyword(s):  
Silver Nanoparticles ◽  
Antifungal Properties ◽  
Capparis Spinosa

scholarly journals In vitro and in vivo antifungal properties of silver nanoparticles against Rhizoctonia solani , a common agent of rice sheath blight disease

2016 ◽  
Vol 11 (3) ◽  
pp. 236-240 ◽  
Author(s):  
Meysam Soltani Nejad ◽  
Gholam Hosein Shahidi Bonjar ◽  
Mehrdad Khatami ◽  
Abbas Amini ◽  
Sonia Aghighi
Keyword(s):  
Silver Nanoparticles ◽  
Rhizoctonia Solani ◽  
Sheath Blight ◽  
Rice Sheath Blight ◽  
Sheath Blight Disease ◽  
Antifungal Properties ◽  
Blight Disease

Synthesis of Urethane Base Composite Materials with Metallic Nanoparticles

2013 ◽  
Vol 1547 ◽  
pp. 141-147 ◽  
Author(s):  
Anayansi Estrada Monje ◽  
J. Roberto Herrera Reséndiz
Keyword(s):  
Silver Nanoparticles ◽  
Surface Morphology ◽  
Metallic Nanoparticles ◽  
Antimicrobial Properties ◽  
Polyurethane Foams ◽  
Polymer Materials ◽  
Antifungal Properties ◽  
Base Composite ◽  
Average Size ◽  
20 Nm

ABSTRACTThe antimicrobial properties of polymer materials are used in a verity of applications. Silver nanoparticles are commonly applied to polyurethane foams to obtain antifungal properties. For this study a series of nanocomposites (PU–Ag) from a urethane-type polymer (PU) were reinforced with various amounts of silver nanoparticles having an average size of 20 nm. The surface morphology and antifungal capacity of the nanocomposites were evaluated. As a result, a different surface morphology from PU was found in PU–Ag nanocomposites. The latter nanocomposite showed enhanced thermal and mechanical properties, when compared with the PU without silver nanoaprticles. The nanocomposite also exhibited good antifungal properties that can be used in a variety of applications.

Green Synthesis of Silver Nanoparticles and their Antifungal Properties

2017 ◽  
Vol 8 (1) ◽  
pp. 254-263 ◽  
Author(s):  
Parteek Prasher ◽  
Manjeet Singh ◽  
Harish Mudila
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Antifungal Properties

scholarly journals Green Synthesized Silver Nanoparticles as Multifunctional Materials for the Degradation of Different Dyes

Proceedings ◽  
2019 ◽  
Vol 29 (1) ◽  
pp. 9
Author(s):  
Ana Alexandra Sorescu ◽  
Alexandrina Nuta ◽  
Ioana Raluca Suica-Bunghez ◽  
Elena Ramona Andrei ◽  
Lorena Iancu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Textile Industry ◽  
Multifunctional Materials ◽  
Antifungal Properties ◽  
Degradation Of Dyes ◽  
Green Synthesized Silver Nanoparticles ◽  
Unconventional Methods ◽  
Scientific Fields

Silver nanoparticles, widely known for their antimicrobial, antioxidant, and antifungal properties, can be obtained using conventional or unconventional methods and have various applications in different scientific fields, including degradation of dyes from the textile industry [1,2]. [...]

Preparation, Characterization and Antifungal Properties of Chitosan-Silver Nanoparticles Synergize Fungicide Against Pyricularia oryzae

2018 ◽  
Vol 18 (8) ◽  
pp. 5299-5305 ◽  
Author(s):  
Dinh Chuong Pham ◽  
Thi Hiep Nguyen ◽  
Uyen Thi Phan Ngoc ◽  
Ngoc Thuy Trang Le ◽  
Tuong Vi Tran ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Pyricularia Oryzae ◽  
Antifungal Properties
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