Culture Condition for the Production of Bacterial Cellulose with Gluconacetobacter persimmonus KJ145

2002 ◽  
Vol 31 (4) ◽  
pp. 572-577 ◽  
Keyword(s):  
Bacterial Cellulose ◽  
Culture Condition

scholarly journals Optimization of Bacterial Cellulose Production from Wastewater of Noodle Processing by Komagataeibacter sp. PAP1 and Bio-Cellulose Paper Production

2020 ◽  
Vol 17 (11) ◽  
pp. 1241-1251
Author(s):  
Tanyarat SUTTHIPHATKUL ◽  
Amornrat SUWANPOSRI ◽  
Duangjai OCHAIKUL
Keyword(s):  
Acetic Acid ◽  
Mechanical Strength ◽  
Bacterial Cellulose ◽  
Culture Condition ◽  
Bacterial Cell ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Cellulose Production ◽  
Paper Production ◽  
Bacterial Cellulose Production

Bacterial Cellulose (BC) production from Fermented Rice Noodle Wastewater (FRNW) was fermented by Komagataeibacter sp. PAP1. In order to increase the production of BC, the FRNW-based medium was prepared and optimized for the cultivation of this bacterium. The optimized FRNW-based medium was composed of 5 % (w/v) mannitol, 0.1 % (w/v) beef extract, 0.5 % (v/v) ethanol, 1 % (v/v) acetic acid, pH 7.0 which were incubated at 30 °C for 10 days. Under these conditions, BC yielded 11.76 ± 0.34 g/L higher (4.40 fold) than the standard Hestrin-Schramm (HS) medium. The study on growth and BC production by Komagataeibacter sp. PAP1 in optimized culture condition showed that BC production by Komagataeibacter sp. PAP1 was growth-associated. The bacterial cell of Komagataeibacter sp. PAP1 increased exponentially from the 3rd to 5th day. The BC paper sheets produced using the obtained BC pellicle from an optimized FRNW-based medium gave higher mechanical strength than those from standard HS medium. This study reveals the use of FRNW as a substrate for BC production. The results indicated that FRNW, which is more environmentally friendly, can be used as an alternative low-cost substrate for BC production.

La rhétorique de la légitimité

2014 ◽  
Vol 32 (4) ◽  
pp. 348-361
Author(s):  
Hélène Casanova-Robin
Keyword(s):  
Culture Condition

Le traité De Principe rédigé par Giovanni Pontano dans la seconde moitié du Quattrocento vise à éduquer le futur souverain, Alphonse II et à lui offrir tous les outils pour conforter sa légitimité contestée par les barons napolitains. La rhétorique de l'éloge, conjuguée au discours didactique, sert ici la construction d'un idéal de souverain, appuyé sur les modèles antiques mais aussi nourri de références contemporaines, l'humaniste proposant une véritable parénèse vers l'accession à la sagesse, qui repose sur l'acquisition d'une solide culture, condition sine qua non pour que se développent les vertus. Mais cet apprentissage demeure incomplet si le prince ne sait pas en outre se doter d'une persona destinée précisément à faire apparaître ses qualités. L'attention portée au souverain en représentation, exposée d'après les modèles de l'orateur et de l'acteur, ouvre la voix à une nouvelle conception de l'exercice du pouvoir.

Incorporation of micro/nanoparticles of PCL with essential oil of Cymbopogon nardus in bacterial cellulose

2018 ◽  
Vol 1 (2) ◽  
pp. 37
Author(s):  
Aline Krindges ◽  
Vanusca Dalosto Jahno ◽  
Fernando Morisso
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Essential Oil ◽  
Zeta Potential ◽  
Bacterial Cellulose ◽  
Culture Medium ◽  
Static Culture ◽  
Cymbopogon Nardus ◽  
Cellulose Membranes

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.

What are the ranges and basis of auxeticity in the phases of cellulose microfibrils?

2017 ◽  
Author(s):  
Akwasi Asamoah
Keyword(s):  
Bacterial Cellulose ◽  
Raman Spectra ◽  
Laser Power ◽  
Microfibrillated Cellulose ◽  
Glass Slide ◽  
Flax Fibre ◽  
Cellulose Microfibrils

<p>One sample of 1D bundle of cellulose microfibrils in the form of lignified flax fibre (0.10526 mm x 10 mm), and one 2D networks of cellulose microfibrils in the form of tunicate cellulose (0.07 mm x 5 mm x 10 mm), bacterial cellulose (0.135 mm x 5 mm x 10 mm) and microfibrillated cellulose (0.08 mm x 5 mm x 10 mm) were put on a glass slide parallel to the principal spectrometer axis. Raman spectra were measured all round in-plane under both half (in 5° steps) polarisation from 0° to 360° in extended mode between 100 cm<sup>-1</sup> and 1150 cm<sup>-1</sup> in 3 accumulations at 10s exposure and 100% laser power. The cursor was placed at the peak of the 1095 cm<sup>-1</sup> band, and intensity read.</p>

Bacterial Cellulose

2002 ◽  
Author(s):  
Stanislaw Bielecki ◽  
Alina Krystynowicz ◽  
Marianna Turkiewicz ◽  
Halina Kalinowska
Keyword(s):  
Bacterial Cellulose

In vitrobiocompatibility of bacterial cellulose and Schwann cells

2015 ◽  
Vol 36 (3) ◽  
pp. 324
Author(s):  
Wei LIU ◽  
Wei-yong GU ◽  
Xia-jun ZHOU ◽  
Tian-yi ZHANG
Keyword(s):  
Bacterial Cellulose ◽  
Schwann Cells
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