Evaluation of the Carbon Dioxide Production by Fungi Under Different Growing Conditions

Pavlik, Martin; Fleischer, Peter; Šuleková, Miriama

doi:10.1007/s00284-020-02033-z

Cited by 10 publications

(6 citation statements)

References 33 publications

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“…We obtained µ = 0.040 with a 95% of confidence interval of 0.039-0.042 and standard error of 0.001. The results shown in Figure 3 are similar to those reported by Cruz-Barrera et al [9] for Trichoderma asperellum Th204 during SSF, who found that the CO 2 accumulation indicated the lag phase occurred from 0 to 20 h, the exponential phase from 20 to 80 h, and the stationary phase from 100 to 160 h. Similarly, in the present work, CO 2 production was observed even at the end of the process, as the microorganisms continued to grow on the inert support, and it is an indicator of metabolic activity of B. bassiana mycelium [39]. Some authors have reported the respiratory activity as an indirect indicator of fungal growth from Aspergillus niger GH1 [26], Trichoderma harzianum IRDT22C [26], Metarhizium anisopliae strain CP-OAX [10], and Metarhizium anisopliae IBCB 425 [40], but there is no information available for Beauveria bassiana.…”

Section: Discussionsupporting

confidence: 82%

Characterization of a Biofilm Bioreactor Designed for the Single-Step Production of Aerial Conidia and Oosporein by Beauveria bassiana PQ2

Lara-Juache

Ávila‐Hernández

Rodríguez‐Durán

et al. 2021

JoF

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Beauveria bassiana is an entomopathogenic fungus that is used for the biological control of different agricultural pest insects. B. bassiana is traditionally cultivated in submerged fermentation and solid-state fermentation systems to obtain secondary metabolites with antifungal activity and infective spores. This work presents the design and characterization of a new laboratory-scale biofilm bioreactor for the simultaneous production of oosporein and aerial conidia by B. bassiana PQ2. The reactor was built with materials available in a conventional laboratory. KLa was determined at different air flows (1.5–2.5 L/min) by two different methods in the liquid phase and in the exhaust gases. The obtained values showed that an air flow of 2.5 L/min is sufficient to ensure adequate aeration to produce aerial conidia and secondary metabolites by B. bassiana. Under the conditions studied, a concentration of 183 mg oosporein per liter and 1.24 × 109 spores per gram of support was obtained at 168 h of culture. These results indicate that the biofilm bioreactor represents a viable alternative for the production of products for biological control from B. bassiana.

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Section: Discussionsupporting

confidence: 82%

Characterization of a Biofilm Bioreactor Designed for the Single-Step Production of Aerial Conidia and Oosporein by Beauveria bassiana PQ2

Lara-Juache

Ávila‐Hernández

Rodríguez‐Durán

et al. 2021

JoF

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“…An elevated CO 2 has been demonstrated to have a highly variable impact on fungal growth as it depends on the environment. Fungal mycelium needs a high concentration of CO 2 to grow (Pavlík et al, 2020). For instance, the number of Aspergillus is constant while the number of Penicillium decreases when the carbon dioxide level is elevated (Tang, Kuehn and Simcik, 2015).…”

Section: Discussionmentioning

confidence: 99%

Indoor Air Factors Affecting the Growth of Microorganism in an Indonesian Gas Company’s Dormitory

Nasri

Athari

Hastiti

et al. 2022

IJOSH

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Introduction: Mold may affect the Indoor Air Quality (IAQ) in workplace dormitories. This study aims to investigate indoor air factors that affect molds growth in a dormitory of an LNG Company in Indonesia. Several indoor air determinant factors, including relative humidity, general temperature, wet temperature, dry temperature, air velocity, illumination, particulate matter, and carbon dioxide concentration were assessed against the growth of microorganism colonies. Methods: This study was a cross-sectional study using a 2 (two)-stage Andersen sampler based on NIOSH 0800 Bioaerosol Sampling Method for Indoor Air Quality for viable bioaerosol sampling. Bioaerosol samples were collected from 50 indoor, corridor, and outdoor sampling points. The total colony count for bioaerosols (TCC) was then determined (CFU/m3). Ten indoor air quality parameters, i.e., relative humidity, general temperature, wet temperature, dry temperature, air velocity, illumination, particulate matter, and carbon dioxide concentration, were measured. Results: The average mold colony concentration in the dormitory rooms was higher (703.1 CFU/m3) than the maximum standard issued by the Ministry of Health of the Republic of Indonesia (< 700 CFU/m3) while the relative humidity was very high (84.4% RH on average), with a direct relation between the humidity and the mold colony concentration. A significant correlation was also identified between mold colony concentration, wet temperature, and CO2 concentration. Conclusion: Significant correlations between bioaerosols, relative humidity, wet temperature, and indoor CO2 concentration indicate insufficient ventilation and poor indoor air quality in the dormitory.

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“…The CO 2 emissions occurring due to the biological respiration process of the mycelium in A1-A3 are based on the study by Pavlík et al (2020). The published average respiration emissions for the growth of Pleurotus ostreatus on beech sawdust (Fagus sylvatica) for a growing duration of 14 days (i.e.…”

Section: Biogenic Carbonmentioning

confidence: 99%

Environmental potential of fungal insulation: a prospective life cycle assessment of mycelium-based composites

Alaux,

Vašatko,

Maierhofer

et al. 2023

Int J Life Cycle Assess

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Purpose Bio-based insulation materials are one of the most promising solutions for reducing the environmental impacts of building envelopes. Among these materials, the environmental benefits of mycelium-based materials have merely been investigated, despite their promising technical and thermal properties. In this paper, we perform a first prospective cradle-to-grave life cycle assessment (LCA) of mycelium-based composite blocks. Methods An attributional cradle-to-gate LCA of the laboratory production of mycelium-based composites was first performed, including 11 environmental impact indicators. Then, scenarios were defined to scale up the technology to the level of industrial production, including the remaining life cycle modules to perform a cradle-to-grave analysis. Biogenic and metabolic carbon were considered by applying the static −1/+1 approach and following the current LCA standards. Future-oriented energy and transport mixes were also included as an additional scenario, systematically modifying both the foreground and background data. Finally, the industrially scaled-up technology and alternative insulation materials were compared with these future conditions (as applied to both materials). Results and discussion Considering climate change, the results are encouraging in comparison to those for traditional plastic insulation, but do not necessarily surpass those for other existing materials such as rock wool. However, trade-offs are observed in other indicators, for which mycelium-based composites tend to perform worse than traditional insulation materials. The industrial scale-up reduced impacts for most indicators, but a considerable trade-off was observed with regard to terrestrial ecotoxicity. The main driver for the remaining greenhouse gas (GHG) emissions was found to be the electricity use during the manufacturing phase. We consider the inclusion of the other life cycle stages as relevant, as this increased the GHG emissions by 10%. Limitations of the current LCA standards, however, are noted and discussed, especially regarding the cascading use of biogenic materials, and highlight the relevance of this case study. Conclusions Mycelium-based composites show a potential for future development, but careful attention should be paid to reducing electricity needs in their manufacturing process. Further improvements could also be made by using fast-growing biogenic materials as a substrate. In particular, we encourage researchers to include all of the life cycle stages in future studies, especially if biogenic emissions are considered.

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Evaluation of the Carbon Dioxide Production by Fungi Under Different Growing Conditions

Cited by 10 publications

References 33 publications

Characterization of a Biofilm Bioreactor Designed for the Single-Step Production of Aerial Conidia and Oosporein by Beauveria bassiana PQ2

Characterization of a Biofilm Bioreactor Designed for the Single-Step Production of Aerial Conidia and Oosporein by Beauveria bassiana PQ2

Indoor Air Factors Affecting the Growth of Microorganism in an Indonesian Gas Company’s Dormitory

Environmental potential of fungal insulation: a prospective life cycle assessment of mycelium-based composites

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