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.
First Department of Biochemistry, School of Medicine, Tokyo, Japan.
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H
Sakagami
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K
Satoh
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