Stimulation of two step degradation of sodium ascorbate by lignins.
Alkali-lignin stimulated the degradation of sodium ascorbate in phosphate-buffered saline, fetal bovine serum and culture medium, but not in distilled water. ESR spectroscopy revealed that alkali-lignin stimulated ascorbyl radical production even in distilled water. Similar stimulation activity was found in several other plant extracts, commercial and natural lignified materials. These data suggest that the lignin-stimulated degradation process of ascorbate might be separated into two processes, the first being the ascorbyl radical production process and the second the degradation process.
Sakagami
H
H
First Department of Biochemistry, School of Medicine, Tokyo, Japan.
Satoh
K
K
D000818:Animals; D001205:Ascorbic Acid / Q000378:metabolism*; D002417:Cattle; D003470:Culture Media; D008031:Lignin / Q000494:pharmacology*; D014867:Water
D003470:Culture Media; D014867:Water; D008031:Lignin; D001205:Ascorbic Acid