Isolation and characterization of lignin from rice hull
1993
Rodriguez-Vazquez, R. | Areyzaga, M. | Parada, A. | Rios-Leal, E. | Anguis-Terrazas, C.
Lignin was isolated from rice hull by dioxane acidolysis with concentrations of HCl in the solvent medium of 1.88, 3.76, 5.66, 7.56, or 11.40 g conc HCl litre(-1), and extraction times of 1 h and 2 h. Phenolic, methoxyl, and guaiacyl group contents were slightly low at 2 h of extraction, furthermore, at 2 h, the guaiacyl content of lignin extracted was reduced as the acid concentration was increased. The coniferyl group content was affected by acid concentration and extraction time. A maximum lignin yield was observed at the 5.66 g conc HCl litre(-1) level and 2 h.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
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