Effect of Temperature and Water Activity on the Growth of Cladosporium sphaerospermum and Cladosporium cladosporioides.

Aihara, Masahiko; Tanaka, Tatsuaki; Ohta, Toshiko; Takatori, Kosuke

doi:10.4265/bio.7.193

Cited by 17 publications

(17 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After preparation, the artificial growth medium was sterilised by autoclaving, cooled and casted in sterile Petri dishes. In the literature, values between 0.89 (Andrews andPitt, 1987 in Petrovic et al, 2000) and 0.95 (Aihara et al, 2002) are found for the water activity of M40Y.…”

Section: Experimental Conditions: An Examplementioning

confidence: 90%

Towards a more thoughtful use of mould prediction models: A critical view on experimental mould growth research

Vereecken

Vanoirbeek

Roels

2015

Journal of Building Physics

View full text Add to dashboard Cite

To assess the mould risk on materials, different mould prediction models are available. However, each of these models struggles with shortcomings, which might result in widely varying conclusions. A view on the challenges might come in use when developing novel or upgraded models in view of a more reliable risk assessment. Additionally, this knowledge will stimulate a more thoughtful use of the current models. This article shows a preliminary evaluation of some mould prediction models, and this based on experimental literature data on wood. Although experiments are the input for the model development, discrepancies are observed. Therefore, the difficulties and challenges in experimental mould research are discussed.

show abstract

Section: Experimental Conditions: An Examplementioning

confidence: 90%

Towards a more thoughtful use of mould prediction models: A critical view on experimental mould growth research

Vereecken

Vanoirbeek

Roels

2015

Journal of Building Physics

View full text Add to dashboard Cite

show abstract

“…Pitt (1975) observed that several species Aspergillus, Eurotium, and Penicillium were xerophilic and were able to grow at minimum a w such as A. candidus (0.75), (0.78), A. niger (0.77), A. wentii (0.84), E. chevalieri (0.71), P. citrinum (0.80), and P. islandicum (0.83). Aihara et al (2002) reported that growth inhibition were occurred on Cladosporium. sphaerospermum and C. cladosporioides at minimum a w requirement.…”

Section: Fungal Populationmentioning

confidence: 99%

Fungal Population of Nutmeg (Myristica fragrans) Kernels Affected by Water Activity During Storage

et al. 2018

View full text Add to dashboard Cite

The aim of this investigation was to determine the effect of various water activities (a w ) on fungal population in nutmeg kernels during storage. The seed nutmegs were obtained from ripe fruits one week after they fell on the ground in North Minahasa Regency, North Sulawesi Province, Indonesia. The kernels (moisture content ± 10%) were stored 0, 15, and 30 days in various a w (0.75, 0.80, 0.83, 0.90, 0.97) using saturated salt solutions at 29 °C in sorption containers. Serial dilution method followed by a pour-plate method in Dichloran 18% Glycerol Agar (DG18) was used to isolate and quantify the fungal population. Results revealed that kernels stored at a w p < 0.05) different from at a w = 0.80-0.83. Fungal population of kernels determined a w p by duration of storage. Range of a w 0.80-0.83 has a smaller total fungal population than a w Aspergillus and Eurotium (6 species), Penicillium (3 species), Fusarium (2 species), 1 species each of Cladosporium or Syncephalastrum, and isolate A. The largest total fungal population (5.0×10 5 CFU g -1 ) was present at the beginning of storage (a w = 0.97) and it was dominated by Penicillium citrinum (2.6×10 5 CFU g -1 ) followed by Cladosporium cladosporioides (1.7×10 5 CFU g -1 ). After 30 days of storage (a w = 0.97) the population of P. citrinum was still dominant with a population of 2.4×10 4 CFU g -1 . Eurotium chevalieri followed with a population of 1.2×10 4 CFU g -1 .

show abstract

“…As one of the most critical abiotic factors that can affect indoor mold growth, moisture has attracted extensive interest from researchers. A great deal is known regarding indoor mold growth under steady‐state conditions . However, water availability for molds in the indoor environment is not constant, but rather fluctuates due to occupants’ activities (eg, operation of air‐conditioning systems and showering).…”

Section: Introductionmentioning

confidence: 99%

“…A great deal is known regarding indoor mold growth under steady-state conditions. [2][3][4][5] However, water availability for molds in the indoor environment is not constant, but rather fluctuates due to occupants' activities (eg, operation of air-conditioning systems and showering). Observations of indoor mold growth under water dynamics have been carried out on various materials (eg, gypsum and wood boards), [6][7][8] by measuring the radiative expansion of colonies at the macro level as the end point of measurement initially.…”

Section: Introductionmentioning

confidence: 99%

The role of oxidative stress in the growth of the indoor moldCladosporium cladosporioidesunder water dynamics

Wong

2019

Indoor Air

View full text Add to dashboard Cite

Moisture is one of the critical abiotic factors that can affect mold growth. Indoor humidity is typically fluctuating, which renders a transient water supply for mold growth. Understanding mold growth under water dynamics and its underlying mechanisms can help in the development of novel and sustainable mold prevention strategies. In this study, pre‐germination and germinated spores of Cladosporium cladosporioides were exposed to daily wet‐dry cycles with different combinations of wetting and drying duration. Afterward, growth delay, cellular H2O2 concentration, and catalase (CAT) activity were measured and compared. We found that under daily wet‐dry cycles, the longer the growth delay was observed, the higher the cellular H2O2 concentration was detected, with the 12‐12 wet‐dry cycle (12‐hour wet and 12‐hour dry) showing the longest growth delay and highest cellular H2O2 production. A positive correlation between cellular H2O2 concentration and growth delay was suggested by Pearson correlation coefficient and linear regression analysis (P < .0001, R2 = 0.85). Furthermore, under daily wet‐dry cycles, molds derived from pre‐germination spores generally exhibited shorter growth delay, lower cellular H2O2 concentration, and higher CAT activity than molds developed from germinated spores. These results together suggest that the growth delay of C. cladosporioides under water dynamics is associated with oxidative stress.

show abstract

Effect of Temperature and Water Activity on the Growth of Cladosporium sphaerospermum and Cladosporium cladosporioides.

Cited by 17 publications

References 6 publications

Towards a more thoughtful use of mould prediction models: A critical view on experimental mould growth research

Towards a more thoughtful use of mould prediction models: A critical view on experimental mould growth research

Fungal Population of Nutmeg (Myristica fragrans) Kernels Affected by Water Activity During Storage

The role of oxidative stress in the growth of the indoor moldCladosporium cladosporioidesunder water dynamics

Contact Info

Product

Resources

About