NOTES ON NUCLEOLAR CONDITIONS IN CEIBA PENTANDRA
نویسندگان
چکیده
منابع مشابه
A new isoflavone glycoside from Ceiba pentandra (L.) Gaertner.
From the 80% EtOH extract of the bark of Ceiba pentandra (L.) Gaertner, a new isoflavone glycoside was isolated along with known isoflavones, vavain and vavain glucoside. The structure was elucidated by spectroscopic analysis as 5-hydroxy-7,4',5'-trimethoxyisoflavone 3'-O-alpha-L-arabinofuranosyl(1-->6)-beta-D-glucopyranoside.
متن کاملImpact of Germination on Biochemical and Antioxidant Enzymes of Ceiba pentandra (Kapok) Seeds
Changes in biochemical components and the activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione peroxidase (GPx) and ascorbate oxidase (AO) in germinating and non-germinating seeds of Ceiba pentandra were evaluated in the present study. Results show that the levels of proteins and total soluble sugars are high and reducing sugars and free amino acids are low in...
متن کاملTwo new isoflavones from Ceiba pentandra and their effect on cyclooxygenase-catalyzed prostaglandin biosynthesis.
The new isoflavone glucoside vavain 3'-O-beta-d-glucoside (1) and its aglycon, vavain (2), were isolated from the bark of Ceiba pentandra, together with the known flavan-3-ol, (+)-catechin, These novel structures were elucidated by one- and two-dimensional NMR experiments and by MS, IR, and UV spectroscopy as 5-hydroxy-7,4',5'-trimethoxyisoflavone 3'-O-beta-D-glucoside (1) and 5,3'-dihydroxy-7,...
متن کاملPhotosynthesis of a tropical canopy tree, Ceiba pentandra, in a lowland forest in Panama.
Diel (24 h) courses of CO(2) and water-vapor exchange of Ceiba pentandra (L.) Gaertn. (Bombacaceae) were studied under natural tropical conditions in the semi-evergreen moist forest of Barro Colorado Island, Panama. Measurements were conducted from early February 1991 (dry season), shortly after new leaves emerged, until mid-October 1991 (wet season), when leaves were shed. Rates of net CO(2) u...
متن کاملHypoglycemic and antihyperglycemic effect of Ceiba pentandra L. Gaertn in normal and streptozotocin-induced diabetic rats.
BACKGROUND Ceiba pentandra (L.) Gaertn, commonly called silk-cotton tree, has been extensively used by traditional medicine practitioners in Northern and Eastern Nigeria in the control and management of diabetes. OBJECTIVE To evaluate the hypoglycaemic and anti-hyperglycaemic effect of ethanolic extract of Ceiba pentandra bark in normal and streptozotocin induced diabetic rats. METHOD Scree...
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ژورنال
عنوان ژورنال: Hereditas
سال: 2010
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1948.tb02836.x