Studies by NMR of in vitro spontaneous oscillations of activity in enzymatic extracts
β Scribed by R. Lenk; C. Queiroz-Claret; O. Queiroz; H. Greppin
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 290 KB
- Volume
- 92
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The antimicrobial activity of extracts of Geum rivale (Rosaceae) and that of some isolated constituents, on bacteria and fungi, was evaluated. The activity was concentrated in the triterpenes fraction and, for gram and gramΓ bacteria, also in the flavonoids fraction.
## Abstract Ovulated rat oocytes were observed to activate spontaneously during in vitro culture. The possible mechanisms involved in this activation were studied by culturing oocytes at various times (0β6 hr) after ovulation, in different media, and for different incubation periods (0β5 hr). Activ
Different extracts of U. tomentosa were tested in vitro for their antioxidant activity utilizing tert-butylhydroperoxide-initiated chemiluminescence in rat liver homogenates. Methanol fractions of both stem-bark and roots were capable of exerting antioxidant activity by this technique. The presence
The present study evaluated the effect of methanol and dichloromethanol extracts obtained from the leaves and stems of Juniperus oxycedrus against neurotransmitter-induced contraction in different isolated tissues of rats and guinea-pigs. Diverse concentrations of these extracts inhibit the concentr