The main goal of this research study was to establish the physicochemical characteristics of sewage sludge, and the nutrients needed to enhance the properties of soil with a view to exploiting were potential for agric...The main goal of this research study was to establish the physicochemical characteristics of sewage sludge, and the nutrients needed to enhance the properties of soil with a view to exploiting were potential for agriculture. The example used was the cultivation of radish (Raphanus sativus). The findings are intended as a contribution towards making agriculture sustainable. This study was carried out to assess the response of radish (Raphanus sativus L.) to doses of sewage sludge applied in medium texture soils, and the socioeconomic contributions that such cultivation of radish would make. Levels of 0.25 and 75 ton/ha of sewage sludge plus the equivalent dose of 25 ton/ha of sewage sludge vermin compost by California Red were used after making a randomized experimental design with three replicates. 30 days after sowing radish seeds, the following data were collected: the number of leaves per plant (NLP);plant height (PH in cm);root diameter (RD) and tubercle production (TP ton/ha). In addition, the pH, EC-electric conductivity (EC), and soil organic matter (SOM) were determined. Statistical analysis showed that 25 and 50 tons/ha gave the best results for the parameters assessed. The estimated increase in family mean income from selling radish crops fertilized with sewage sludge is around 17%.展开更多
Carotenoids have attracted greater attention due to the beneficial role on human health. It is an essential nutrient and has some biological functions such as species-specific coloration, photoprotection, light absorb...Carotenoids have attracted greater attention due to the beneficial role on human health. It is an essential nutrient and has some biological functions such as species-specific coloration, photoprotection, light absorbing, which is an important component because of its role as precursor of vitamin A. In this study was performed the production of fl-Carotene by Rhodotorula glutinis UCP/WFCC 1555 in presence and absence of blue and white using LED （light-emitting diodes） and evaluation of the cytotoxic effect. The production was investigated in low cost medium constituted by different concentrations of CG （crude glycerin） and CSL （corn steep liquor） from the CCD （Central Composite Design） and the identification and yield of the β-Carotene was investigated by chromatographic profile （HPLC）. Additionally, the fl-Carotene produced was tested to evaluate its cytotoxic effect in human tumor cells MCF-7 （breast cancer） and HL-60 （promyelocytic leukemia） and healthy cells of macrophages. The results showed that in the medium composed by 6% glycerin and 0.6% corn steep liquor, in the absence of light, occurred the maximum production of total carotenoids with values of 160μg·g-1 and these 100.60μg·g-1 correspond to the β-Carotene that showed ability in inhibit cell growth in several tumor cells such as MCF-7 cells （breast cancer） and HL-60 （promyelocytic leukemia）.展开更多
文摘The main goal of this research study was to establish the physicochemical characteristics of sewage sludge, and the nutrients needed to enhance the properties of soil with a view to exploiting were potential for agriculture. The example used was the cultivation of radish (Raphanus sativus). The findings are intended as a contribution towards making agriculture sustainable. This study was carried out to assess the response of radish (Raphanus sativus L.) to doses of sewage sludge applied in medium texture soils, and the socioeconomic contributions that such cultivation of radish would make. Levels of 0.25 and 75 ton/ha of sewage sludge plus the equivalent dose of 25 ton/ha of sewage sludge vermin compost by California Red were used after making a randomized experimental design with three replicates. 30 days after sowing radish seeds, the following data were collected: the number of leaves per plant (NLP);plant height (PH in cm);root diameter (RD) and tubercle production (TP ton/ha). In addition, the pH, EC-electric conductivity (EC), and soil organic matter (SOM) were determined. Statistical analysis showed that 25 and 50 tons/ha gave the best results for the parameters assessed. The estimated increase in family mean income from selling radish crops fertilized with sewage sludge is around 17%.
文摘Carotenoids have attracted greater attention due to the beneficial role on human health. It is an essential nutrient and has some biological functions such as species-specific coloration, photoprotection, light absorbing, which is an important component because of its role as precursor of vitamin A. In this study was performed the production of fl-Carotene by Rhodotorula glutinis UCP/WFCC 1555 in presence and absence of blue and white using LED （light-emitting diodes） and evaluation of the cytotoxic effect. The production was investigated in low cost medium constituted by different concentrations of CG （crude glycerin） and CSL （corn steep liquor） from the CCD （Central Composite Design） and the identification and yield of the β-Carotene was investigated by chromatographic profile （HPLC）. Additionally, the fl-Carotene produced was tested to evaluate its cytotoxic effect in human tumor cells MCF-7 （breast cancer） and HL-60 （promyelocytic leukemia） and healthy cells of macrophages. The results showed that in the medium composed by 6% glycerin and 0.6% corn steep liquor, in the absence of light, occurred the maximum production of total carotenoids with values of 160μg·g-1 and these 100.60μg·g-1 correspond to the β-Carotene that showed ability in inhibit cell growth in several tumor cells such as MCF-7 cells （breast cancer） and HL-60 （promyelocytic leukemia）.
