Showing papers on "Nigella damascena published in 2002"
TL;DR: The two species had positive agronomic traits, such as short growing cycle, low seed shattering and low susceptibility to diseases, and different possible options for direct utilisation or industrial processing, may determine an interest in further considering the two species as potential new multi-purpose crops.
179 citations
TL;DR: In this paper, Nigella damascena seeds were extracted by cold press, in a Soxhlet apparatus and with CO2 The yield obtained with liquid CO2 was only 10.57%.
Abstract: Nigella damascena seeds were extracted by cold press, in a Soxhlet apparatus and with CO2 The yield obtained with liquid CO2 was only 10.57%. EtOH (1%) increased the yield by 50%. CO2-extracts were separated into the 2 fractions. The yield in the first fraction increased 2 times by increasing the pressure from 150 to 350 bar. EtOH (1%) increased the yield 2 times at 150 bar. Linoleic acid was the major fatty acid (43.71 to 50.83%), followed by oleic (14.87 to 23.65%), stearic (15.07 to 23.24%), and palmitic (10.13 to 12.07%) acids. Elemenes (21.38% to 29.16%) were the most abundant volatile constituents, free fatty acids constituted from 35.04% to 51.18%, the majority being linoleic (32.83 to 40.58) (Range for linoleic should be 24.51 to 40.58%-see Table 3) and oleic acids (4.96 to 13.32). (Less)
18 citations
TL;DR: The yeast estrogen screen (YES) containing a human estrogen receptor was used to evaluate the estrogenic activity of extracts obtained from Nigella damascena seeds and suggested the presence in Nigella of polar components whose activity can be clearly demonstrated after previous elimination of interacting apolar components that may mask the activity of more polar components.
Abstract: We used the yeast estrogen screen (YES) containing a human estrogen receptor to evaluate the estrogenic activity of extracts obtained from Nigella damascena seeds. Alcohol extracts obtained by direct extraction of seeds showed a low estrogenic activity, while the alcohol extract obtained after extraction with solvents of increasing polarity showed a strong estrogenic activity. This suggests the presence in Nigella of polar components whose activity can be clearly demonstrated after previous elimination of interacting apolar components that may mask the activity of more polar components. The response of both alcohol fractions follow a bell-shaped curve indicating a concentration-dependent relationship.
13 citations