SEM and TEM for structure and properties characterization of bacterial cellulose/hydroxyapatite composites

Scanning ◽  
2016 ◽  
Vol 38 (6) ◽  
pp. 757-765 ◽  
Author(s):  
Natalia A. Arkharova ◽  
Elena I. Suvorova ◽  
Alexander V. Severin ◽  
Albert K. Khripunov ◽  
Sergey V. Krasheninnikov ◽  
...  
2021 ◽  
Vol 50 (1) ◽  
pp. 187-190
Author(s):  
Jin Han ◽  
Yosuke Iimure ◽  
Yukihiro Okamoto ◽  
Keishi Suga ◽  
Hiroshi Umakoshi

1987 ◽  
pp. 1875-1879 ◽  
Author(s):  
Hiroki SAKAGUCHI ◽  
Noboru TANIGUCHI ◽  
Hajime SERI ◽  
Gin-ya ADACHI ◽  
Jiro SHIOKAWA

2019 ◽  
Vol 824 ◽  
pp. 30-37
Author(s):  
Pipat Sudying ◽  
Nuchanat Laingaumnuay ◽  
Phimchanok Jaturapiree

Bacterial cellulose (BC), produced by some bacteria has received attention because its high purity and robust characteristics enable its use in medicine and industry. This study aimed to screen bacteria capable of producing BC from fruits, and to optimize the BC production in both traditional YE yeast fermentation and Schramm and Hestrin (SH) media. The rice washing drainage without any pretreatment as the sole carbon source in the yeast medium was also investigated for BC production in both static and agitated cultures. The bacterial strain Li1 isolated from apple (Malus pumila) was identified as Komagataeibacter (Gluconacetobacter) nataicola based on 16S rDNA sequence analysis. K. nataicola Li1 cultured in a YE medium produced significantly more BC than that in a SH medium in the static culture. Moreover, the weight yields of dry BC films obtained from rice washing drainage and YE media in the static cultures were not significantly different. However, in the agitated culture, the weight yields of dry BC films were more significant in the YE medium than in rice washing drainage medium. In addition, the structure and properties of BC were determined using SEM, FTIR, DSC and XRD. This study shows that rice washing drainage can be used as the carbon source for BC production by K. nataicola Li1.


Author(s):  
Aline Krindges ◽  
Vanusca Dalosto Jahno ◽  
Fernando Morisso

Incorporation studies of particles in different substrates with herbal assets growing. The objective of this work was the preparation and characterization of micro/nanoparticles containing cymbopogon nardus essential oil; and the incorporation of them on bacterial cellulose. For the development of the membranes was used the static culture medium and for the preparation of micro/nanoparticles was used the nanoprecipitation methodology. The incorporation of micro/nanoparticles was performed on samples of bacterial cellulose in wet and dry form. For the characterization of micro/nanoparticles were carried out analysis of SEM, zeta potential and particle size. For the verification of the incorporation of particulate matter in cellulose, analyses were conducted of SEM and FTIR. The results showed that it is possible the production and incorporation of micro/nanoparticles containing essential oil in bacterial cellulose membranes in wet form with ethanol.


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