scholarly journals Effects of benzoxazol and its nitro-derivatives on growth indicators and chemical composition of tomato fruits

2019 ◽  
Vol 57 (3) ◽  
pp. 133-138
Author(s):  
Loik G. Mukhtorov ◽  
◽  
Maria B. Nikishina ◽  
Evgenia V. Ivanova ◽  
Yury M. Atroschenko ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Biological Activity ◽  
Chemical Composition ◽  
Computer Program ◽  
Growth Processes ◽  
Tomato Fruits ◽  
Tomato Plants ◽  
Tomato Seeds ◽  
On Line ◽  
Nitro Derivatives

The present work is devoted to the study of the biological activity of benzoxazole, 5-nitrobenzoxazole and 5,7-dinitrobenzoxazole in relation to tomato plants. The ability of these substances to stimulate growth processes in tomato seeds, to influence the synthesis of mono- and polysaccharides, to regulate the content of ascorbic acid and the total acidity in the fruits of tomatoes has been studied. The ability of plants to accumulate nitrogen in the nitrate form under the action of benzoxazole and its nitro derivatives has also been analyzed. Thus, the possibility of improving the sowing properties and chemical characteristics of tomato plants by treating them with compounds of the benzoxazole group was studied. In addition, an assessment of the toxicity of the studied drugs was carried out using the computer program GUSAR on-line. Predictions of bioaccumulation factor (BCF) and endotoxicity class for rats were obtained for four forms of drug administration in animals. Earlier, the authors of the article carried out studies of the fungistatism of the considered compounds in vitro on six pathogenic fungi of various taxonomic classes. The germination of tomato seeds treated with the tested drugs was determined in the laboratory on the 12th day of the experiment by counting the germinated seeds. The germination values are expressed as a percentage of the total number of seeds sown. Growing tomato plants and harvesting was carried out in open ground conditions. Plants were treated with benzoxazole and its nitro derivatives by watering with solutions with a concentration of 0.05 mol / l. Control plants were watered. Chemical analysis of tomato fruits was performed under laboratory conditions in accordance with GOST. The analysis of the obtained data showed that the introduction of nitro groups into the basic structure of benzoxazole is accompanied by a significant increase in the biological activity of the synthesized compounds, which has different patterns of manifestation depending on the stage of plant development. Thus, 5,7-dinitrobenzoxazole has the greatest stimulating effect on the growth processes in tomato seeds. While the most pronounced positive effect on the synthesis in the fruits of tomato sugars and ascorbic acid was 5-nitrobenzoxazole. For unsubstituted benzoxazole, no pronounced positive trends in the manifestation of biological activity have been identified. Evaluation forecast using the computer program GUSAR on-line allowed to establish a low level of toxicity of the studied substances. This work is part of the study of the biological activity of various classes of organic compounds. The effect of the test substance on the growth rate and development of agricultural plants, their chemical composition is analyzed. In addition, the fungicidal activity of these compounds is determined. Thus, the purpose of the research is the selection of substances capable of comprehensively solving the problem of obtaining and preserving the yield of crop production.

STUDY OF CORIANDER SEED OIL (Coriandrum sativum L.)

2010 ◽  
Vol 13 (3) ◽  
pp. 29-38
Author(s):  
Ha Bich Phan ◽  
Thach Ngoc Le
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Seed Oil ◽  
Coriandrum Sativum ◽  
Conventional Heating ◽  
Geranyl Acetate ◽  
Physical And Chemical ◽  
Coriander Seed Oil ◽  
Coriander Seed

Coriandrum sativum L. belongs to the Apiaceae family, which is cultivated in Dong Nai province, in this paper its seed oil of was studied. The essential oil was extracted by hydrodistillation. We used two methods for activating of hydrodistillation: conventional heating and microwave irradiating. Its physical and chemical indexes were measured. The chemical composition of this oil was identified by GC/MS and quantified by GC/FID. Linalool (75.51-77.21 %), and geranyl acetate (15.64-12.79 %) were the main constituents of the oil which were obtained in 0,32-0.39 % yield. The biological activity of this oil was reported.

Experience with nutrient removal in a fixed-film system at full-scale wastewater treatment plants

1997 ◽  
Vol 36 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Vibeke R. Borregaard
Keyword(s):  
Wastewater Treatment ◽  
Surface Area ◽  
Nutrient Removal ◽  
Wastewater Treatment Plants ◽  
High Specific Surface Area ◽  
Biological Nutrient Removal ◽  
Growth Processes ◽  
Total N ◽  
Attached Growth ◽  
On Line

In the upgrade of wastewater treatment plants to include biological nutrient removal the space available is often a limiting facor. It may be difficult to use conventional suspended growth processes (i.e. activated sludge) owing to the relatively large surface area required for these processes. Recent years have therefore seen a revived interest in treatment technologies using various types of attached growth processes. The “new” attached growth processes, like the Biostyr process, utilise various kinds of manufactured media, e.g. polystyrene granules, which offer a high specific surface area, and are therefore very compact. The Biostyr plants allow a combination of nitrification-denitrification and filtration in one and the same unit. The results obtained are 8 mg total N/l and an SS content normally below 10 mg/l. The plants in Denmark which have been extended with a Biostyr unit have various levels of PLC control and on-line instrumentation.

Chemical Composition and Biological Activity of the Essential Oil and Solvent Extracts of

2017 ◽  
Vol 04 (1) ◽  
pp. 43-49
Author(s):  
Amir Reza Jassbi ◽  
Mehdi Zare ◽  
Fatemeh Heidary Jamebozorgi
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil

Impact of Chemical Composition on the Nanostructure and Biological Activity of α-Galactosidase-Loaded Nanovesicles for Fabry Disease Treatment

2021 ◽  
Vol 13 (7) ◽  
pp. 7825-7838 ◽  
Author(s):  
Judit Tomsen-Melero ◽  
Solène Passemard ◽  
Natalia García-Aranda ◽  
Zamira Vanessa Díaz-Riascos ◽  
Ramon González-Rioja ◽  
...  
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Fabry Disease ◽  
Disease Treatment

scholarly journals Effect of Spaceflight on Tomato Seed Quality and Biochemical Characteristics of Mature Plants

Horticulturae ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 89
Author(s):  
Elena Dzhos ◽  
Nadezhda Golubkina ◽  
Marina Antoshkina ◽  
Irina Kondratyeva ◽  
Andrew Koshevarov ◽  
...  
Keyword(s):  
Seed Quality ◽  
Space Station ◽  
Field Conditions ◽  
Tomato Seed ◽  
Tomato Plants ◽  
Biochemical Characteristics ◽  
Tomato Seeds ◽  
Genetic Modifications ◽  
Total Antioxidant

Intensive space exploration includes profound investigations on the effect of weightlessness and cosmic radiation on plant growth and development. Tomato seeds are often used in such experiments though up to date the results have given rather vague information about biochemical changes in mature plants grown from seeds subjected to spaceflight. The effect of half a year of storage in the International Space Station (ISS) on tomato seeds (cultivar Podmoskovny ranny) was studied by analyzing the biochemical characteristics and mineral content of mature plants grown from these seeds both in greenhouse and field conditions. A significant increase was recorded in ascorbic acid, polyphenol and carotenoid contents, and total antioxidant activity (AOA), with higher changes in the field conditions compared to greenhouse. Contrary to control plants, the ones derived from space-stored seeds demonstrated a significant decrease in root AOA. The latter plants also showed a higher yield, but lower content of fruit dry matter, sugars, total dissolved solids and organic acids. The fruits of plants derived from space-stored seeds demonstrated decreased levels of Fe, Cu and taste index. The described results reflect the existence of oxidative stress in mature tomato plants as a long-term consequence of the effect of spaceflight on seed quality, whereas the higher yield may be attributed to genetic modifications.

scholarly journals Impact of Harvest Conditions and Host Tree Species on Chemical Composition and Antioxidant Activity of Extracts from Viscum album L.

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3741
Author(s):  
Wioleta Pietrzak ◽  
Renata Nowak
Keyword(s):  
Antioxidant Activity ◽  
Biological Activity ◽  
Chemical Composition ◽  
Tree Species ◽  
Plant Material ◽  
Plant Secondary Metabolites ◽  
Host Tree ◽  
Host Tree Species ◽  
High Antioxidant Activity ◽  
Mistletoe Extracts

The content of plant secondary metabolites is not stable, and factors such as the region/location effect and seasonal variations have an impact on their chemical composition, especially in parasitic plants. Research in this area is an important step in the development of quality parameter standards of medicinal plants and their finished products. The effects of the time and place of harvest and the host tree species on the chemical composition and antioxidant activity of mistletoe extracts were investigated. Statistical tools were used to evaluate the results of the spectrophotometric and LC-ESI-MS/MS studies of the phenolic composition and antioxidant activity. The investigations indicate that the qualitative and quantitative composition, influencing the biological activity of mistletoe extracts, largely depends on the origin of the plant. The mistletoe extracts exhibited a rich phenol profile and high antioxidant activity. The chemometric analysis indicated that mistletoe collected from conifers (Viscum abietis and Viscum austriacum) had the most advantageous chemical composition and antioxidant activity. Moreover, the chemical profile and biological activity of the plant material were closely related to the climatic conditions and location of the harvested plant. Higher levels of phenolic compounds and high antioxidant activity were found in extracts obtained from plant material collected in cold weather with the presence of snow and less sunshine (autumn–winter period).

Effect of nitrogen fertilization on yield, storage losses and chemical composition of winter cabbage

1991 ◽  
Vol 71 (3) ◽  
pp. 943-946 ◽  
Author(s):  
S. Freyman ◽  
P. M. Toivonen ◽  
W. C. Lin ◽  
P. W. Perrin ◽  
J. W. Hall
Keyword(s):  
Ascorbic Acid ◽  
Chemical Composition ◽  
Key Words ◽  
Nitrogen Fertilization ◽  
N Fertilization ◽  
Nitrogen Rate ◽  
N Application ◽  
Storage Losses ◽  
White Cabbage ◽  
Brassica Oleracea L

Increasing rates of field nitrogen (N) application (0, 100, 200, 300, 400 and 500 kg N ha−1) resulted in markedly higher yields of winter white cabbage (Brassica oleracea L. var. capitata 'Bartolo') due to larger head size. Glucose and fructose contents increased with increased nitrogen. In contrast, ascorbic acid and sucrose contents declined slightly with increased nitrogen. Nitrogen rate had little effect on storage losses. The results indicated that increased N fertilization provided overall benefit to cabbage production. Key words: Cabbage, nitrogen fertilization, storage losses, yield

scholarly journals Comparison of Different Methods for Extracting the Astaxanthin from Haematococcus pluvialis: Chemical Composition and Biological Activity

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3569
Author(s):  
Yicheng Tan ◽  
Zhang Ye ◽  
Mansheng Wang ◽  
Muhammad Faisal Manzoor ◽  
Rana Muhammad Aadil ◽  
...  
Keyword(s):  
High Pressure ◽  
Biological Activity ◽  
Chemical Composition ◽  
Haematococcus Pluvialis ◽  
Activity Analysis ◽  
Cell Disruption ◽  
Dependent Manner ◽  
Dpph Activity ◽  
The Impact ◽  
Dose Dependent

In this study, the impact of different cell disruption techniques (high-pressure micro fluidization (HPMF), ionic liquids (ILs), multi-enzyme (ME), and hydrochloric acid (HCl)) on the chemical composition and biological activity of astaxanthin (AST) obtained from Haematococcus pluvialis was investigated. Results indicated that all cell disruption techniques had a significant effect on AST composition, which were confirmed by TLC and UPC2 analysis. AST recovery from HCl (HCl-AST) and ILs (ILs-AST) cell disruption techniques was dominant by free and monoesters AST, while AST recovery from HPMF (HPMF-AST) and ME (ME-AST) cell disruption techniques was composed of monoesters, diesters, and free AST. Further biological activity analysis displayed that HCl-AST showed the highest ABTS and DPPH activity, while ILs-AST showed better results against the ORAC assay. Additionally, ILs-AST exhibits a stronger anti-proliferation of HepG2 cells in a dose-dependent manner, which was ascribed to AST-induced ROS in to inhibit the proliferative of cancer cells.

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