The first demonstration of a novel isolated fungus<i>Eutypella</i>sp. BJ associated with the biodegradation of polyvinyl alcohol

Deng, Yiling; Wang, Chenyuan; Chen, Ping; Lin, Xiaoshan; Zhang, Yi

doi:10.1039/c9ra04410h

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…We inoculated the AS washed with an inorganic medium ( 4 ) into 50 mL of the inorganic medium, amended with 0.02% PVA [SOLUBLON GA (Mn: 44000), Aicello CO LTD, Japan] in a 500-mL shaking flask and incubated at 60 rpm and 30°C. We measured the PVA concentration within the culture supernatant using the Deng method ( 5 ) and spread the culture dilutions onto a 0.02% PVA-containing agar plate, cultivated at 30°C to screen PVA-degrading colonies. We repeatedly streaked a colony, named ACL01, forming a transparent circle on an iodine-stained PVA agar plate, for purification.…”

Section: Announcementmentioning

confidence: 99%

Metagenome-assembled genome sequences of two bacterial species from polyvinyl alcohol-degrading co-colonies

Nakamura,

Asano,

Nambu

et al. 2024

Microbiol Resour Announc

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We present the metagenome-assembled genome sequences of two polyvinyl alcohol-degrading co-colony-derived bacterial species relative to Rhodanobacter sp. DHB23 and Priestia megaterium ATCC 14581. We estimated the genomes of these species to be 3,476,996- and 5,169,587-bp long (for Rhodanobacter sp. DHB23 and Priestia megaterium ATCC 14581, respectively).

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Section: Announcementmentioning

confidence: 99%

Metagenome-assembled genome sequences of two bacterial species from polyvinyl alcohol-degrading co-colonies

Nakamura,

Asano,

Nambu

et al. 2024

Microbiol Resour Announc

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“…This depicts that the PVA polymer is a polymer that is easily degraded in nature due to high degree of hydrolysis. There are two steps in the biodegradation mechanism of PVA composites: firstly, the PVA hydroxyl groups are oxidized to form the B-diketone structure, and then the C-C bonds in the diketone structure are broken down through hydrolysis [34]. During the degradation process, the fungus Aspergillus niger releases enzymes that accelerate polymer degradation by disrupting the internal chemical structure of the material.…”

Section: Biodegradable Testmentioning

confidence: 99%

Mechanical and Physical Properties of Biodegradable Foams Made from Sorghum Fiber and Rice Straw for Food Packaging Applications

Marlina,

Nissa,

Purnomo

et al. 2023

BIO Web Conf.

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This study investigates the potential of agricultural by-products, rich in lignocellulosic materials, as sustainable food packaging materials to mitigate the environmental issues associated with nonbiodegradable plastics and styrofoam. Starch-based biodegradable food trays were developed using agricultural by-products, including sorghum stalk, rice straw, and kraft pulp through thermopressing method. By combining varying proportions of polyvinyl alcohol (PVA) and a sorghum-rice straw fiber mixture, biodegradable foam products with notable strength, water resistance, and cost-effectiveness for large-scale production were produced, exhibiting densities between 0.7 and 0.8 gr/m³. Notably, a 5% PVA composition in the sorghum fiber biodegradable foam displayed favourable mechanical properties and water resistance, with a tensile strength of 5 MPa and a contact angle of 73.79°, coupled with an appealing physical appearance. However, increasing PVA concentration beyond this level had negligible effects, indicates the optimal limit of PVA. Additionally, the distinct roles of rice straw powder as a matrix and sorghum fiber as reinforcement within the biodegradable foam were identified. Biodegradation tests revealed natural decomposition starting from the seventh day, with over 95% growth of Aspergillus Niger fungus, suggesting that these biodegradable foam products hold promise for mass production in the packaging industry, presenting a sustainable alternative to conventional plastic packaging.

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“…Eutypella are cosmopolite and diverse fungi, which are included in phylum Diatrypaceae, subclass Xylariomycetidae, and genus Eutypella (Acero et al, 2017). They are commonly isolated from various terrestrial and marine environments (Da Silva et al, 2008;Moyo et al, 2016;Zhang, 2019) and play an important ecological role as a decomposer (Lee et al, 2011;Deng et al, 2019;Brglez et al, 2020). Meanwhile, the fungi Eutypella are reported to be valuable biological resources due to their ability to produce bioactive secondary metabolites such as terpenoids, alkaloids, and polyketides (Sun et al, 2011;Liu et al, 2014b;Niu et al, 2017a;Zhang et al, 2020;Zhang et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

Terpenoids and other secondary metabolites produced by the Eutypella fungi and their bioactivities

Zhou

He²,

Chen³

2022

Front. Mar. Sci.

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The fungi Eutypella could metabolize a myriad of natural products with unique structures and diverse bioactivities, which were deemed as key sources for lead compounds in drug discovery. Since the first research on the genus Eutypella in 2009, a myriad of secondary metabolites including terpenoids, alkaloids, and polyketides have been discovered in this genus, and most of them exhibited significant pharmacological activities. However, there are no systematic reviews that reported about the structures and bioactivities of Eutypella up to now. In this review, a total of 153 secondary metabolites and 42 references have been systematically summarized, and we found that the terpenoids (68.09%) and alkaloids (19.15%) were the new main components of this fungi, and the primary antiproliferative activity (64.89%) was mainly derived from the terpenoids and alkaloids. Thus, this review about the chemical diversity and biological activities of the metabolites from the fungus Eutypella provided a new perspective for the development of new drugs for pharmacologists.

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The first demonstration of a novel isolated fungusEutypellasp. BJ associated with the biodegradation of polyvinyl alcohol

Cited by 9 publications

References 34 publications

Metagenome-assembled genome sequences of two bacterial species from polyvinyl alcohol-degrading co-colonies

Metagenome-assembled genome sequences of two bacterial species from polyvinyl alcohol-degrading co-colonies

Mechanical and Physical Properties of Biodegradable Foams Made from Sorghum Fiber and Rice Straw for Food Packaging Applications

Terpenoids and other secondary metabolites produced by the Eutypella fungi and their bioactivities

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