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1. Gamma radiation induced changes in antioxidant and radioprotective activities of flavonoids differing mainly with respect to –OH substitution pattern in B and C rings.

Author

A, Arul Anantha Kumar, Sonwani, Swetha, D, Bakkiam, N, Ramanathan, and T, Subba Rao

Subjects
GAMMA rays, MYRICETIN, QUERCETIN, ANTIOXIDANTS, APIGENIN, LUTEOLIN, FLAVONOIDS
Abstract

Six flavonoids (naringenin, genistein, apigenin, luteolin, quercetin and myricetin) differing in number and arrangement of –OH groups in B and C-rings were γ-irradiated (100 kGy) and studied for structural changes, antioxidant (AO) and radioprotective (RP) activities. Quercetin and myricetin were highly radiosensitive and presence of C-ring 3-OH besides other structural features have resulted in C-ring cleavage and A–C, B–C conjugation destruction causing diminution in AO (≈ − 2.0 folds) and RP activities (≈ − 1.0 fold). But in others, lack of C-ring 3-OH had probably resulted in constructive radiolytic changes causing enhancement in AO (≈ 1.5–1.9 folds) and RP activities (≈ 1.0–2.85 folds). [ABSTRACT FROM AUTHOR]

Published
2020
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2. M.R. GAUTAM: A cerebral musician.

Author

N. RAMANATHAN

Subjects
MUSICIANS, SCHOLARS
Abstract

An obituary for Indian classical musician, scholar and arts administrator Madurai Ramaswamy Gautam is presented.

Published
2013

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