Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

Schröpfer, Suellen Brasil; Bottene, Marcia Karpinski; Bianchin, Liane; Robinson, Luiz Carlos; Lima, Viviane de Almeida; Jahno, Vanusca Dalosto; Barud, Hernane da Silva; Ribeiro, Sidney J. L.

doi:10.1590/0104-1428.1712

Cited by 38 publications

(20 citation statements)

References 29 publications

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“…A similar kind of conclusion is reported by Barton Pudlik et al [49] and Xu et al [50] who observed cracking and delamination of wood composites due to filamentous fungi and moulds, respectively. Our results were in line with the report of Schröpfer et al [51] who observed delamination and pores created by the soil microbes causing degradation of bacterial cellulose. However, the degradation potential of our strain was found lower than the degrading activity (42-45%) of soil-derived bacterial consortia such as WS1-M and SG-M [52].…”

Section: Discussionsupporting

confidence: 94%

Statistical optimization of lignocellulosic waste containing culture medium for enhanced production of cellulase by Bacillus tequilensis G9

Dar

Pawar

Chintalchere

et al. 2019

Waste Dispos. Sustain. Energy

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The ever increasing energy demands of modern civilization and rapidly dwindling fossil fuels point towards a renewable substitute like biofuels. However, higher costs associated with biofuel productions is the major bottleneck for its commercialization. The present study demonstrates the use of a statistical approach called response surface methodology (RSM) to investigate the optimum parameters for maximum production of cellulase by Bacillus tequilensis G9. The Plackett-Burman design (PB) of the RSM analysis indicated grass straw (GS) concentration, pH, FeSO 4 , inoculum, MgSO4, incubation period and NH 4 Cl as significant variables that influence the cellulase production. Further, to propose the best medium for the maximum production of cellulase by B. tequilensis G9, the most influential parameters, namely concentrations of GS as substrate, FeSO 4 , pH, inoculum size, etc. were fine-tuned by central composite design (CCD) involving four factors and five levels. The CCD analysis demonstrated 8% substrate concentration, 1.5% of inoculum along with 10 ppm FeSO 4 and a pH of 5.5 in media as optimum conditions for highest enzyme production. The field emission scanning electron microscopic analysis of the treated GS showed structural alterations depicting significant deconstruction caused by B. tequilensis G9. The yield of the partially purified cellulase proteins were found to be 21% revealing molecular mass between 30 and 97 kDa. The enhanced cellulase production by B. tequilensis G9 demonstrated in our study brands its applications in many industrial processes like biorefinery, biofuels, etc.

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Section: Discussionsupporting

confidence: 94%

Statistical optimization of lignocellulosic waste containing culture medium for enhanced production of cellulase by Bacillus tequilensis G9

Dar

Pawar

Chintalchere

et al. 2019

Waste Dispos. Sustain. Energy

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“…Polymers known as Poly(hydroxyalkanoates) -(PHAs) are a family of thermoplastic polymers most widely studied for application as biodegradable materials 2,3 . Among the most studied PHAs is the poly(hydroxybutyrate) -(PHB) homopolymer ( Figure 1) that presents thermoplastic properties similar to isotactic polypropylene due to its crystallinity and melting point 4 . The biodegradation process is a biological activity of living organisms to decompose the complex structure of organic compounds to nontoxic products with lower molecular weights.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation in Soil of the PHB/Wood Flour (80/20) and PHB/Sisal Fiber (80/20) Tubes

Casarin¹,

Rodrigues²,

Júnior

et al. 2017

Mat. Res.

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This paper presents the results of a study that aimed to monitor and evaluate biodegradation in soil, by the mass loss and the mechanical properties of plastic tubes. For this work, there were extruded and injected plastic tubes made of biodegradable polymer poly(hydroxybutyrate) -(PHB) and composite PHB/Wood Flour and PHB/Sisal Fiber, both with 20% fiber. There were used three biodegradation test devices for 30, 60 and 90 days. At the end of each test, the biodegraded samples were taken from soil, washed thoroughly with water, dried and weighed to evaluate the mass loss. Mechanical properties were evaluated using flexural tests before and after biodegradation in soil. Based on the results, it was observed that all the studied tubes lost mass over the biodegradation test, and the tubes of biodegradable composites lost more weight than pure PHB.

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“…This compactness and uniform arrangement of fibrils in BC could favor a uniform response to the applied force and result in its improved tensile strength (Ul-Islam et al, 2012). The nano sized network wires promotes high surface area, Due to its properties BC can be used in nature, like nanocrystals form or associated with other natural or synthetic polymers to obtain biodegradable materials (Schröpfer et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Properties and aerogel applications of a marine algal origin biocellulose produced by the immobilized Gluconacetobacter xylinus ATCC 10245

Ibrahim¹,

Beliah²,

Farag³

et al. 2020

Egypt. J. of Aquatic Biolo. and Fish.

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Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

Cited by 38 publications

References 29 publications

Statistical optimization of lignocellulosic waste containing culture medium for enhanced production of cellulase by Bacillus tequilensis G9

Statistical optimization of lignocellulosic waste containing culture medium for enhanced production of cellulase by Bacillus tequilensis G9

Biodegradation in Soil of the PHB/Wood Flour (80/20) and PHB/Sisal Fiber (80/20) Tubes

Properties and aerogel applications of a marine algal origin biocellulose produced by the immobilized Gluconacetobacter xylinus ATCC 10245

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