Influence of lignosulfonate on crystal structure and productivity of bacterial cellulose in a static culture

Keshk, Sherif M. A. S.; Sameshima, Kazuhiko

doi:10.1016/j.enzmictec.2006.07.037

Cited by 125 publications

(48 citation statements)

References 15 publications

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“…The three characteristic peaks locate at 14.460, 16.520 and 22.680 can be assigned to the BC planes of (1−1 0), (1 1 0), and (0 2 0), respectively. This is an agreement with the result of Keshk [12]. The broad diffraction peaks observed for BC is due to the fact that BC is not a completely crystalline material [5].…”

Section: Characterization Of Thesupporting

confidence: 82%

Preparation and Characterization of Antimicrobial Activity Bacterial Cellulose Membrane

Tang¹,

Jia²,

Jia³

2016

Proceedings of the 2016 International Conference on Biological Sciences and Technology

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Abstract.Bacterial cellulose (BC) shows good potentiality as active packaging material. However, bacterial cellulose itself has no antimicrobial activity to prevent microbial contamination. To achieve antimicrobial activity, ε-poly lysine (ε-PL) was incorporated into BC by immersing BC in ε-PL solution. Investigations into the effects of ε-PL concentrations and contact times on incorporation of ε-PL into cellulose membranes showed that the lowest ε-PL concentration and the shortest time for production of an effective antimicrobial cellulose membrane (ε-PL/BC) were 400 mg/l and 2 hours, respectively. The antimicrobial cellulose membrane was characterized by FTIR, XRD and AFM. It was found that ε-PL is incorporated into the BC network, and the antimicrobial cellulose membrane is not a simple mixture of BC and ε-PL. In this study ε-PL/BC membranes are demonstrated to have potential applicability as antimicrobial packaging films.

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Section: Characterization Of Thesupporting

confidence: 82%

Preparation and Characterization of Antimicrobial Activity Bacterial Cellulose Membrane

Tang¹,

Jia²,

Jia³

2016

Proceedings of the 2016 International Conference on Biological Sciences and Technology

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“…1. The peak assignments for the infrared absorption bands for LS, DLS, and kraft lignin (KL), are based on the characteristic bands of lignin reported in previous literature (Keshk and Sameshima 2006;Suganuma et al 2008;Lisperguer et al 2009;Yang et al 2014;Kim et al 2015;Shankar et al 2015;Strassberger et al 2015) and are shown in Fig. 2.…”

Section: Properties Of Ls and Dls Ftir Spectramentioning

confidence: 99%

Effect of Desulfonation of Lignosulfonate on the Properties of Poly(Lactic Acid)/Lignin Composites

Ye¹,

Zhang²,

Yu³

2017

BioResources

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To utilize the lignin generated by the paper industry and reduce the cost of poly(lactic acid) (PLA), PLA/lignin composites were prepared from PLA and different ratios of lignosulfonate (LS) or desulfonated lignosulfonate (DLS) particles using a casting method. The physicochemical properties of the lignins were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), gel permeation-high performance liquid chromatography (GPC), and elementary analysis. The results indicate that the sulfur content of the original LS was successfully reduced to half by desulfonation to produce DLS, which was found to have a higher thermal stability and a lower average molecular weight than LS. Additionally, the thermal stability, crystallization, compatibility, mechanical, hydrophobicity, and optical properties of the PLA/lignin composites were also meticulously evaluated. Comparison of the PLA/DLS and PLA/LS composites revealed that the incorporation of DLS into PLA improved compatibility, thermal stability (T5% and Tmax), and hydrophobicity, while the mechanical properties remained almost unchanged. In addition, both PLA/DLS and PLA/LS exhibited UV light absorption capacity. Finally, the low-rate addition of both LS (10%) and DLS (5%) accelerated the crystallization of PLA, but crystallization was delayed with higher lignin content.

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“…HS V6 in HS medium resulted in a gradual increase in BC production, but the production decreased with sugar concentrations higher than 20 g/L (Santos et al, 2012). The highest levels of production of BC achieved during cultivation of Komagataeibacter xylinus ATCC 10245 in HS medium were obtained at a sugar concentration of 10 g/L, while higher sugar concentrations (20 and 30 g/L) decreased the production (Keshk and Sameshima, 2006). In another research, the highest BC production (5.3 g/L) was reached after Acetobacter xylinum BPR 2001 culture in sugar cane molasses with a sugar concentration adjusted to 20 g/L.…”

Section: Effect Of Dilutionmentioning

confidence: 77%

“…Media with sugar levels ranging from 10 to 20 g/L may provide an optimal condition for BC production, as demonstrated in different studies (Jung et al, 2010;Keshk and Sameshima, 2006;Jung et al, 2005).…”

Section: Sisal Juice Characterizationmentioning

confidence: 82%

“…Also, the addition of antioxidant compounds in the fermentative medium favored the production of BC because the antioxidants inhibit the formation of gluconic acid (Jozala et al, 2015;Keshk and Sameshima, 2006). Species from the genus Agave are sources of antioxidant compounds with inhibitory activity against oxidative enzymes (Santos et al, 2012), while bacteria from the genus Komagataeibacter can metabolize tannins, which accounts for their resilience and development in agroindustrial media (Usha and Appaiah, 2012).…”

Section: Effect Of Dilutionmentioning

confidence: 99%

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Bacterial Cellulose Production by Komagataeibacter hansenii ATCC 23769 Using Sisal Juice - An Agroindustry Waste

Lima

Nascimento

Andrade

et al. 2017

Braz. J. Chem. Eng.

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-In this study, we have optimized production of bacterial cellulose (BC) by Komagataeibacter hansenii ATCC 23769 in a static cultivation using sisal juice, an agroindustrial residue, as substrate. Optimization of fermentation parameters has been carried out using the one-variable-at-a-time method. Effect of initial sugar concentration, pH, nitrogen supplement, and cultivation time was evaluated. The influence of nitrogen source and quantity for bacterial cellulose production was studied using a central composite rotational design (CCRD).The highest production of BC (3.38 g/L) was obtained after 10 days of cultivation, using sisal juice (pH 5) at 15 g/L of sugars and supplemented with 7.5 g/L of extract yeast. The cellulose production yield in selected sisal culture conditions was three times higher than the yield in synthetic medium, indicating that sisal juice is a suitable substrate for BC production.

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Influence of lignosulfonate on crystal structure and productivity of bacterial cellulose in a static culture

Cited by 125 publications

References 15 publications

Preparation and Characterization of Antimicrobial Activity Bacterial Cellulose Membrane

Preparation and Characterization of Antimicrobial Activity Bacterial Cellulose Membrane

Effect of Desulfonation of Lignosulfonate on the Properties of Poly(Lactic Acid)/Lignin Composites

Bacterial Cellulose Production by Komagataeibacter hansenii ATCC 23769 Using Sisal Juice - An Agroindustry Waste

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