Biomass photo-chemistry. A review and prospects

Durán, Nélson; Gómez, Edgardo Olivares; Mansilla, Héctor D.

doi:10.1016/0141-3910(87)90100-5

Cited by 7 publications

(2 citation statements)

References 128 publications

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“…The absorption of light can cause photolysis in cellulose and their derivatives (Duran et al, 1987). In general, a decrease of the degree of polymerization and an increase of the copper number as well as an increase of alkali solubility can be observed.…”

Section: Photoreactionsmentioning

confidence: 99%

“…Oxidized positions in cellulose are main reasons for strength loss and decreased performance parameters in textiles, paper, and other cellulosic materials. Moreover, they are responsible for general aging and are assumed to be the promoter of thermal and light induced yellowing processes (Duran, Gomez, & Mansilla, 1987;Lewin, 1997 structures via fluorescence spectroscopy in cellulosic pulps were developed. As shown in Fig.…”

Section: Fluorescence Of Polysaccharides and Polysaccharide Derivativesmentioning

confidence: 99%

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Photoactive polysaccharides

Wondraczek

Kotiaho

Fardim

et al. 2011

Carbohydrate Polymers

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a b s t r a c tLight is a non-invasive stimulus or probe, which retains more and more attention in science and technology. In the present review the reader is informed about the important issue of the interactions of polysaccharides and light. Considering some aspects of polysaccharide structure and properties, topics such as absorption and fluorescence of polysaccharides, the structural analysis using light as a probe, and creation of new materials by combining chromophores and polysaccharides are discussed. Attention is also be given to polysaccharide derivatives, where absorption of light induces structural changes, including photocrosslinking and photochromism.

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Section: Photoreactionsmentioning

confidence: 99%

Section: Fluorescence Of Polysaccharides and Polysaccharide Derivativesmentioning

confidence: 99%

Photoactive polysaccharides

Wondraczek

Kotiaho

Fardim

et al. 2011

Carbohydrate Polymers

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Biomass photochemistry: XI. Photochemical pretreatment of cellulose and its fungal degradation

Durán

Rodrı́guez

Gómez

et al. 1988

Biotech & Bioengineering

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In order to study the single-cell proteins and cellulase production, fungal degradation of alpha-cellulose was tested. Photochemical pretreatment of alpha-cellulose at lambda > 254 nm increases by over 100% the cellulase production by Chrysonilia sitophila (TFB strain). This is reflected in a larger production of soluble proteins in the filtrate with higher cellulase activity when compared with unirradiated cellulose. Single-cell protein production (insoluble proteins) was also improved after preirradiation of cellulose or even on rice hull as the only carbon source after inoculation with the spore of C. sitophila. This pretreatment is a valuable method for increasing the digestibility of lignocellulosic materials.

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References

Rabek

1996

Photodegradation of Polymers

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Biomass photo-chemistry. A review and prospects

Cited by 7 publications

References 128 publications

Photoactive polysaccharides

Photoactive polysaccharides

Biomass photochemistry: XI. Photochemical pretreatment of cellulose and its fungal degradation

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