Red Fruit Extract Research Articles

Germination Inhibitors in Fruit Extracts of Red Beet (Beta vulgariscv.rubra

Germination inhibitors in methanol and water extracts of red beet fruits (Beta vulgaris cv. rubra L.) nave been studied using lettuce and red beet seed germination as bioassays. The methanol extracts contained substances which inhibited le uce seed g< -mination, but had no effect on the germination of red beet seeds. Germination of both lettuce seeds and of water leached or sulphuric acid-treated red beet seed balls were inhibited by the water extracts. The concentrations of ammonia, ferulic acid, and oxalate in the water extracts were much lower than required for inhibition of red beet seed germination. The water extracts contained, however, large amounts of inorganic ions, and the results clearly demonstrated that the in hibitory effect of the water extracts on red beet seed germination was mail due to the content of such inorganic ions.

Coriose and related compounds. I. Isolation of coriose and co-occurring carbohydrates from leaf, stem and fruit of Coriaria japonica A. Gray

Coriose (D-altro-3-heptulose) (I), sedoheptulose (II), methyl α-D-galactoside (III) and myo-inositol (V) were isolated from the methanol extract of red fruit of Coriaria japonica after removing tutin by extraction with chloroform, and also glucose and fructose etc. by fermentation, treating with ion-exchange resins, and then passing through a charcoal-Celite column. Volemitol (IV), I and V were isolated from seed of red fruit. The mother liquor of coriamyrtin extract from leaf and stems gave I and V. The presence of these constituents in the plant has been confirmed by paper partition chromatography of the juice pressed from fresh fruit and stem, and also by gas liquid chromatography of trimethylsilyl ether. Distribution of the other sugar constituents was also investigated.