Photodegradation of lignin

Castellan, A., Colombo, N., Fomier de Violet, Nourmamode, A., and bouas-Laurent, H., "Photodegradation of Lignin A Photochemical Study of Bleached CTMP and Lignin Model Molecules", Proceedings of the 5th International Symposium of Woos and Pulping Chemistry, Raleigh, N.C., 1989, p.421-. 

Kringstad, K.P., Lin, S.Y., "Mechanism in the Yellowing of High-Yield Pulps by Light. Structure and Reactivity of Free Radical Intermediates in the Photodegradation of lignin", Tappi, 1970, 53(12), 2296. 

Vanucci, C., Fomier de Violet, P., Bous-Laurent, H., Castellan, A., Photodegradation of Lignin. "A Photophysical and Photochemical Study of Non-phenolic a-Carbonyl 0-O-4 Lignin Model Dimer 3,4-Dimethoxy-a-(2 -methoxyphenoxy)acetophenone", J. Photochem. Photobiol., A Chem., 1988, 41, 251. 

Krmgstad KP, Lin SY (1970) Mechanism in the yellowing of high-yield pulps by light Structure and reactivity of free radical intermediates in the photodegradation of lignin TAPP1 53 2296-2301... 

C Vanned, P Pomier de Violet, H Bouas-Laurent, and A Castellan. Photodegradation of Lignin A Photophysical and Photochemical Study of a Nonphenolic a-carbonyl (3-0-4 Lignin Model Dimer, 3,4-dimethoxy-a-(2 -methoxyphenoxy)acetophenone. J. Photochem. Photobiol., A. Chem. 41 251-265, 1988. 

K Konya and JC Scaiano. Development and Applications of Pyrene-Containing Fluorescent Probes for Monitoring the Photodegradation of Lignin-Rich Products. Chem. Mater. 6 2369-2375, 1994. 

Gierer and SY Lin. Photodegradation of Lignin A Contribution to the Mechanism of Chromophore Formation. Svensk Papperstidn 75 233-239, 1971. 

JA SchmidL AB Berinstain, F de Rege, C Heitner, LJ Johnston, and JC Scaiano. Photodegradation of Lignin Model a-Guaiacoxyacetoveratrone. Unusual Effects of Solvent, Oxygen and Singlet State Participation. Can J Chem 69 104-107, 1991. 

C Jaeger, A Nourmamode, and A Castellan. Photodegradation of Lignin A Photochemical Study of Phenolic Coniferyl Alcohol Lignin Model Molecules. Holrforschung 47(5) 375-390, 1993. 

C Crestini and M D Auria. Photodegradation of Lignin The Role of Singlet Oxygen. J Photochem Photobiol A Chem 101 69-73, 1996. 

Several important facts were elicited about the photodegradation of lignin from these model compound studies [981] ... 

Kamoun, D., Merlin, A., Deglise, X., Urizar, S.H., Fernandez, AJM. Electron paramagnetic resonance spectroscopy study of photodegradation of lignins extracted and isolated from Pinus radiata wood. Ann. For. Sci. 56(7), 563-578 (1999)... 

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