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1 – 10 of over 1000Qi Kang, Carlos E. Carpio, Chenggang Wang and Zeng Tang
This research examined the impacts of diversified income from trading caterpillar fungus on pastoral households' livestock production and income. The specific objectives were to…
Abstract
Purpose
This research examined the impacts of diversified income from trading caterpillar fungus on pastoral households' livestock production and income. The specific objectives were to identify the main factors underlying participation in caterpillar fungus trade and to explore the impacts of a diversified income from trading fungus on livestock production activities and income.
Design/methodology/approach
Data were collected from a pastoral household survey (n = 503) in five Tibetan Autonomous Prefectures. The authors employed propensity score matching (PSM) procedures to estimate the effects of participation in trading caterpillar fungus.
Findings
Pastoral households participating in caterpillar fungus activities maintain smaller herds, sell fewer animals for profit, slaughter more livestock for family consumption and experience fewer livestock deaths compared to nonparticipants. There is also some evidence that pastoral households participating in caterpillar fungus activities have a higher annual income compared to nonparticipants.
Research limitations/implications
A direct measure of grassland degradation was not included due to the data limitation. The estimated average treatment effects could differ under different observed households' characteristics.
Originality/value
This study fills a gap in the literature on the impacts of diversified income on livestock production activities. The authors provide a new perspective on the controversy over the extraction of caterpillar fungus. This study contributes to exploring the dual role of income diversification in addressing poverty and grassland resource degradation for Tibetan pastoral communities.
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Nigel Craig, Nick Pilcher, Alan M. Forster and Craig Kennedy
The spirits industry is a major economic contributor worldwide, often requiring years of maturation in barrels that is associated with significant release of ethanol into the…
Abstract
Purpose
The spirits industry is a major economic contributor worldwide, often requiring years of maturation in barrels that is associated with significant release of ethanol into the surrounding environment. This provides carbon nutrition for colonisation of black fungal growths, one type being Baudoinia compniacensis, or Whisky Black. Although growth is localised in production areas, numerous sites exist globally, and this paper's purpose is to investigate the extent and implications of colonisation.
Design/methodology/approach
The paper presents and discusses the results of a visual survey of the area surrounding a site where whisky is maturing in nearby bonded warehouses. The evaluation considers radial zoning distance from the ethanol source and material substrate types and surface textures. Classical key stages of Building Pathology, namely manifestation, diagnosis, prognosis and therapy, are considered.
Findings
Key findings are that the colonisation of the fungus is non-uniform and dependent on the substrate building material. Additionally, rougher-textured building materials displayed heavier levels of fungal manifestation than smooth materials. Aspects such as distance, wind direction and moisture are considered relative to the extent and level of fungal growth.
Originality/value
This investigation provides the first assessment of the extent and nature of the fungal growth in properties built in surrounding areas to bonded warehouses. Such information can facilitate open dialogue between stakeholders that recognise the aspirations of values of corporate social responsibility, whilst balancing the economic importance of distilling with recognition of the fungus's impact on property values and appropriate recurring remedial treatments.
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A.M.A. Silva, T.M. Santiago, C.R. Alves, M.I.F. Guedes, J.A.K. Freire, R.H.S.F. Vieira and R.C.B. da Silva
This paper seeks to report a preliminary study that was conducted in order to investigate the corrosion behavior of aluminum surfaces in aqueous solution in the presence of…
Abstract
Purpose
This paper seeks to report a preliminary study that was conducted in order to investigate the corrosion behavior of aluminum surfaces in aqueous solution in the presence of microorganisms. For this purpose, the fungus Aspergillus niger was tested in chloride‐containing aqueous media.
Design/methodology/approach
Weight loss and pH measurements were performed to verify the activity of the fungus on the aluminum surface and the atomic force microscopy technique was used to examine the surface after removing the biological film.
Findings
The pH of the media depended on the immersion time. Pitting attack was observed on the surface. The findings confirmed that the corrosion reaction of the aluminum was catalyzed by the presence of fungus and, simultaneously, the mean roughness of the aluminum surface was altered. After removing the biofilm, fungal hyphae hallmark was evident.
Originality/value
Up until low, relatively few studies have addressed biofilm attack on materials, and especially attack on metallic surfaces in media contaminated by fungi. Hence, this paper is important for its contribution to the body of knowledge about biofilm action on metallic surfaces.
This paper aims to prevent cotton textiles from fungi damage using eco-friendly aloe vera leaf extract, which was applied at a minimum amount, and cost-effective material.
Abstract
Purpose
This paper aims to prevent cotton textiles from fungi damage using eco-friendly aloe vera leaf extract, which was applied at a minimum amount, and cost-effective material.
Design/methodology/approach
Batch extraction method using methanol solvent; phytochemical analysis was investigated and three-level factorial design of experiment and analysis of variance (ANOVA) was used for the optimization of 27 test runs. The finish was applied by pad-dry-cue at distinct concentrations, and the chemical property after treatment was studied. Colorfastness and coordinates are analyzed. Cotton fabrics were cultured with Fusarium oxysporum fungi and the anti-fungal property was examined and reported according to AATCC 30–2004 standard.
Findings
The maximum yield of extract was at an optimum volume of 200 ml, 65 °C for 120 min. The effective antifungal fabric was achieved with minimum concentrations. There was significant strength loss in warp and weft direction. The treatment results in yellow-colored cotton fabric with fastness grade 3. The antifungal effect is durable until fifteen washes as the tensile strength losses were less than 1%.
Research limitations/implications
The findings of this work were based on samples considered in the laboratory. However, it can be reproducible at the factory production scale the treatment has the potential of yielding yellow dyed cotton fabric with multifunctional finishing.
Practical implications
The treated fabric is against Fusarium oxysporum Fungi which is one of the vital antimicrobial properties of textile apparel products for various areas of application.
Social implications
The natural extract material applied to a textile material is eco-friendly effective against microbes of cotton seeds during cultivation and apparel end-uses.
Originality/value
The work application of fungi resistance on cotton fabric using aloe vera active component was original; this work provides extraction of the active agent from aloe vera leaf, which is optimized statically and successfully applied for anti-fungal activity on cotton fabric.
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Boshra Ahmed Halo, Rashid Al-Yahyai, Abdullah Al-Sadi and Asma Al-Sibani
Crops are increasingly affected by drought; hence, the current study explored the potential role of three desert endophytic fungi, Aspergillus fumigatus, Aspergillus terreus and…
Abstract
Purpose
Crops are increasingly affected by drought; hence, the current study explored the potential role of three desert endophytic fungi, Aspergillus fumigatus, Aspergillus terreus and Talaromyces variabilis, in conferring drought tolerance in tomato plants.
Design/methodology/approach
Preserved endophytic fungi from a Rhazya stricta desert plant were adopted to obtain the required fungal treatment; tomatoes received fungal treatments directly in plastic trays and subsequently in pots. Drought was applied using 15% of PEG-6000 at two stages: flowering and fruiting. The following parameters were measured: pollen sterility, growth characteristics, morphological analysis and biochemical analysis, including proline, gibberellic acid (GA3) and chlorophyll measurements; thus, the data were analyzed statistically using SPSS software.
Findings
All applied endophytes significantly promoted pollen viability and tomato yield under stressed and nonstressed conditions. Interestingly, these endophytes significantly enhanced the number of trichomes under drought stress and promoted tomato fruit quality. The colonized tomato plants accumulated a high proline level under drought stress but lower than un-inoculated stressed plants. Also, a significant rise in growth characteristics was observed by A. fumigatus and A. terreus under normal conditions. Moreover, both raised GA3 levels under drought-stressed and nonstressed conditions. Also these two endophytes enhanced chlorophyll and carotenoid contents under drought stress. Fruit characteristics were enhanced by nonstressed T. variabilis and stressed A. fumigatus.
Originality/value
The present endophytic fungi provide impressive benefits to their host in normal and drought-stressed conditions. Consequently, they represent valuable sources as sustainable and environmentally friendly alternatives to mitigate drought stress.
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Maisa Mohamed Ali Mansour, Rushdya Rabee Ali Hassan, Salwa Moustafa Amer Mahmoud and Youssif Mohamed Akl
This paper aims to identify the most common fungal species that grow on paper manuscripts and cause bio-deterioration. It also detects the impact of additive materials on fungal…
Abstract
Purpose
This paper aims to identify the most common fungal species that grow on paper manuscripts and cause bio-deterioration. It also detects the impact of additive materials on fungal degrading and builds a wide database. Thus, it helps conservators understand this phenomenon.
Design/methodology/approach
In total, 15 samples were collected from different paper manuscripts suffering from fungi. The achievement of the study objectives depends on using a variety of analyzes, such as a microbiological study, which indicated that three main fungi grew on the paper samples. Then, a digital microscope and an environmental scanning electron microscope were used to detect the effect of fungi on paper fibers. Fourier transform infrared microscopy was used to identify the binding medium and the X-ray diffraction method was used to measure the crystallinity index of cellulose of the paper samples.
Findings
Arabic gum was used as a binder medium with the samples. Aspergillus Niger, Aspergillus Fumigatus and Aspergillus Clavatus were the most common fungal species that grew on the Qur’an papers under investigation. They also caused much common damage to the paper samples. The results of the analyzes also showed that the highest crystallinity index of cellulose was in the samples that contained the lowest rate of fungal growth.
Originality/value
This paper highlights the relationship between fungal degradation and the multi-component nature of paper manuscripts. It builds a wide database that correlates the composition and the degradation of the Qur’an papers.
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A.A. Abdel Hameed, A.M. Ayesh, M. Abdel Razik and H.F. Abdel Mawla
The purpose of this paper is to study the effect of ultraviolet radiation (UVC) on the survivability and susceptibility of some fungal species isolated from the indoor air of…
Abstract
Purpose
The purpose of this paper is to study the effect of ultraviolet radiation (UVC) on the survivability and susceptibility of some fungal species isolated from the indoor air of agricultural, industry‐related workplaces.
Design/methodology/approach
Environmental fungi were collected from the air of cotton and soybean mills using liquid impinger sampler (AGI‐30). The UVC exposure experiment was performed on Aspergillus flavus, Aspergillus parasiticus, Aspergillus ochraceous, Aspergillus fumigatus, Aspergillus niger and Penicillium rubrum using UV lamp (λ=254 nm; 0.1 mW/cm2). The susceptibility constant (Z) was used to determine the susceptibility of any given organism to UVC.
Findings
The conidia survival was inversely proportional to the time of UVC exposure and ∼77‐88.5% of conidia were killed within six hours of exposure. Mutant conidia showed a wide range of morphological alterations including damage of their cell walls and features. Mycotoxin production patterns of the mutants Aspergillus flavus and Aspergillus parasiticus changed on comparison with the parental control patterns.
Originality/value
The paper provides information on the effect of UVC radiation on environmental fungi. The results reported in this research discussed the disadvantages of using UVC as a decontaminant of fungi.
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The purpose of this article is to: review the current methods and results of measuring the macrofungal biodiversity of both saprophytes and mycorrhiza; to show root tip analysis…
Abstract
Purpose
The purpose of this article is to: review the current methods and results of measuring the macrofungal biodiversity of both saprophytes and mycorrhiza; to show root tip analysis to be less accurate for mycorrhiza than expected when the latest research reports are considered; and to provide a simple methodology for measuring macrofungal biodiversity of forests.
Design/methodology/approach
Current macrofungal biodiversity methods are reviewed. A diagram representing the relationship between the mycorrhizal fungus and the root with three axes of variation is presented. A new methodology based on fruit body recording and analysis to provide a set of biodiversity quality indices is also presented.
Findings
The results of the use of the new methodology on two adjacent sites are presented as examples. The comparison of a set of sites for the full range of indices is also presented. Suggestions of how forest management may be influenced to include macrofungal biodiversity are made.
Originality/value
This new approach is considered to be an improvement on current practice since it relates both mycorrhizal biodiversity and saprophytic biodiversity to the ecosystem function.
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Abstract
The simplest forms of plant life may prove to be the answer to world food problems and the source of life‐saving nutrients for the hungry nations in the years to come.