Chemical components and biological activity of oats seed - avena sativa l.

2020 ◽  
Vol 12 (02) ◽  
Keyword(s):  
Biological Activity ◽  
Avena Sativa ◽  
Chemical Components

scholarly journals In vitro biological activity of Hydroclathrus clathratus and its use as an extracellular bioreductant for silver nanoparticle formation

2020 ◽  
Vol 9 (1) ◽  
pp. 416-428 ◽  
Author(s):  
Raghad R. Alzahrani ◽  
Manal M. Alkhulaifi ◽  
Nouf M. Al-Enazi
Keyword(s):  
Biological Activity ◽  
Unsaturated Fatty Acids ◽  
Multidrug Resistant ◽  
Chemical Components ◽  
Resistant Bacteria ◽  
Transmission Electron ◽  
Hydroclathrus Clathratus ◽  
Adaptive Nature ◽  
First Time

AbstractThe adaptive nature of algae results in producing unique chemical components that are gaining attention due to their efficiency in many fields and abundance. In this study, we screened the phytochemicals from the brown alga Hydroclathrus clathratus and tested its ability to produce silver nanoparticles (AgNPs) extracellularly for the first time. Lastly, we investigated its biological activity against a variety of bacteria. The biosynthesized nanoparticles were characterized by UV-visible spectroscopy, Fourier-transform infrared spectroscopy, dynamic light scattering, transmission electron microscopy, and energy-dispersive spectroscopy. The biological efficacy of AgNPs was tested against eighteen different bacteria, including seven multidrug-resistant bacteria. Phytochemical screening of the alga revealed the presence of saturated and unsaturated fatty acids, sugars, carboxylic acid derivatives, triterpenoids, steroids, and other components. Formed AgNPs were stable and ranged in size between 7 and 83 nm and presented a variety of shapes. Acinetobacter baumannii, Staphylococcus aureus, Methicillin-resistant S. aureus (MRSA), and MDR A. baumannii were the most affected among the bacteria. The biofilm formation and development assay presented a noteworthy activity against MRSA, with an inhibition percentage of 99%. Acknowledging the future of nano-antibiotics encourages scientists to explore and enhance their potency, notably if they were obtained using green, rapid, and efficient methods.

scholarly journals Chemical composition and ruminal degradation kinetics of white oat (Avena sativa L.) IPR 126

2017 ◽  
Vol 18 (1) ◽  
pp. 50-61 ◽  
Author(s):  
Silvonei Tiago RICACHESKI ◽  
Douglas Sampaio HENRIQUE ◽  
Lilian Regina Rothe MAYER ◽  
Jhone Gleison de OLIVEIRA ◽  
Jucemara Aparecida ROSLER ◽  
...  
Keyword(s):  
Avena Sativa ◽  
Dry Matter ◽  
Degradation Kinetics ◽  
Gas Production ◽  
Repeated Measurements ◽  
Chemical Components ◽  
In Vitro Digestibility ◽  
Estimation Of Parameters ◽  
Ruminal Degradation

SUMMARY The present study aiming to determine the nutritional quality of oat (Avena sativa L.) IPR 126 in order to produce forage for ruminants. Four periods between harvests were used: 14, 21, 28 and 35 days, distributed in randomized blocks with four replicates for each treatment. The variables evaluated were: the concentration of dry matter (DM), neutral detergent insoluble fiber (NDF), crude potein (CP), lignin, dry matter (DM), ash, ether extract (EE) and in vitro digestibility of dry matter obtained by measurement of gas production. The profile of gas production was adjusted to the logistic bicompartimental mathematical model. The variables and the parameters of the adjusted gas production curves were analyzed as repeated measurements through the PROC MIXED of SAS (version 9.0) and the restricted maximum likelihood (REML) as the method of estimation of parameters. Regression analysis was performed for the variables: DM, CP, EE, NDF, ash, and for the parameter k2 of the bicompartimental model. DM and NDF concentrations increased linearly, CP, ash, and the estimations of the parameter k2 reduced linearly and the EE concentration showed a cubic behavior in function of the age of harvest. Lignin and other parameters of the Schofield model were not influenced by the age of harvest. The harvest interval influenced some chemical components and degradation rate of fiber carbohydrates, but do not interfere in lignin concentration. The forage with 21 days of cutting interval has the high nutritional value.

Genetic Variability for Chemical Components in Sixty European Oat (Avena sativa L.) Cultivars

2003 ◽  
Vol 31 (1-2) ◽  
pp. 185-192 ◽  
Author(s):  
R. Redaelli ◽  
D. Sgrulletta ◽  
E. De Stefanis
Keyword(s):  
Genetic Variability ◽  
Avena Sativa ◽  
Chemical Components

Determination of the Chemical Components and its Biological Activity of EB Extractives from Buxus microphylla

2014 ◽  
Vol 13 (4) ◽  
pp. 171-173
Author(s):  
Zhong-Feng Zhang ◽  
Rui-Lin He ◽  
Yong-Jun Ye ◽  
Xu Zhang
Keyword(s):  
Biological Activity ◽  
Chemical Components ◽  
Buxus Microphylla

scholarly journals Searching for Differences in Chemical Composition and Biological Activity of Crude Drone Brood and Royal Jelly Useful for Their Authentication

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2233
Author(s):  
Ewelina Sidor ◽  
Michał Miłek ◽  
Grzegorz Zaguła ◽  
Aleksandra Bocian ◽  
Małgorzata Dżugan
Keyword(s):  
Amino Acids ◽  
Biological Activity ◽  
Chemical Composition ◽  
Royal Jelly ◽  
Protein Profile ◽  
Chemical Components ◽  
Sugar Amino Acids ◽  
Drone Brood ◽  
Genetic And Environmental Factors ◽  
Polyphenolic Profile

Drone brood is a little-known bee product which is frequently considered as a male equivalent of royal jelly and is sometimes used as its adulterant. The aim of the study was to compare the chemical composition and biological activity of both bee products originated from the same apiaries (n = 3) limiting the influence of genetic and environmental factors. Moreover, for drone brood study covered testing three stages of larval development (days 7, 11, and 14). The comparison included mineral composition (ICP-OES method), protein content and protein profile (SDS-PAGE), testosterone and estradiol content (ELISA tests). HPTLC method was used to analyze of sugar, amino acids, and polyphenolic profile of drone brood and royal jelly. Moreover, their antioxidant and enzymatic properties were compared. A lot of similarities between drone brood and royal jelly were found in terms of chemical components. However, drone brood was more abundant in iron and manganese, reducing sugars and some amino acids, especially proline, tyrosine, and leucine. It contained more testosterone (especially on the 14th day) and estradiol (on the 7th day). The greatest differences in the enzymatic activities and polyphenolic profile were found. Diastase and α-glucosidase activity were found as specific enzymes of the drone brood. Similarly, ferulic and ellagic acids were characteristic for brood and were not present in royal jelly. The study showed a lot of similar features for both tested bee products, however, some specific markers which can serve to differentiate drone brood and royal jelly were found.

scholarly journals Biological Activity Of Oats Fruit Lipids (Avena Sativa L.)

2020 ◽  
Vol 02 (09) ◽  
pp. 67-70
Author(s):  
N.K. Yuldasheva ◽  
◽  
S.D. Gusakova ◽  
D.X. Nurullaeva ◽  
R.P. Zakirova ◽  
...  
Keyword(s):  
Biological Activity ◽  
Avena Sativa

scholarly journals Chemical composition and biological activities of the Agaricus mushrooms

2014 ◽  
Vol 14 ◽  
pp. 41-45 ◽  
Author(s):  
L Munkhgerel ◽  
N Erdenechimeg ◽  
B Tselmuungarav ◽  
B Amartuvshin ◽  
Ts Bolor ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Biological Activity ◽  
Biological Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Chemical Components ◽  
Scavenging Activity ◽  
Mongolian Flora ◽  
Ethanol Extracts ◽  
First Time

Two species of Agaricus mushroom grown in Mongolia were analyzed for their element content. Biological activity and chemical components study of Agaricus, grown in the Mongolian flora has been investigated for the first time. The ethanol extracts of dried Agaricus sp. mushrooms were analyzed for antioxidant activity on 1,1-diphenyl-2- picrylhydrazyl (DPPH) radicals and interferon-like activity. The ethanol extracts from Agaricus arvensis showed the most potent radical scavenging activity. The IC50 of A. silvaticus and A. arvensis were 216 and 17.75 g/ml respectively. Among the twenty three mushroom extracts, the extracts from A. silvatisus and A. arvensis have shown the interferon-like activity. DOI: http://dx.doi.org/10.5564/mjc.v14i0.197Mongolian Journal of Chemistry 14 (40), 2013, p41-45

CHEMICAL COMPONENTS OF COMARUM PALUSTRE L. AND THEIR BIOLOGICAL ACTIVITY

2020 ◽  
pp. 126-140
Author(s):  
Strugar J. ◽  
Povydysh M.N.
Keyword(s):  
Biological Activity ◽  
Pharmacological Activity ◽  
Folk Medicine ◽  
Biologically Active ◽  
New Drugs ◽  
Perennial Herb ◽  
Chemical Components ◽  
Comarum Palustre ◽  
Rosaceae Family ◽  
Marsh Cinquefoil

Marsh cinquefoil (Comarum palustre L.) is a perennial herb from the Rosaceae family. It has been used for long in folk medicine in form of infusions, tinctures and decoctions of the underground and aboveground parts of this plant. Nonetheless it is not a pharmacopoeial plant and requires additional research. The goal of this study was to review the existing literature data on the chemical composition of the aerial and underground organs of the marsh cinquefoil (Comarum palustre L.) and their pharmacological activity. Over the period from 1963 to the present, more than 130 components have been identified in the aboveground and underground parts of the marsh cinquefoil, mainly belonging to the group of phenolic compounds, tannins, fatty acids, polysaccharides and amino acids. Several aspects of pharmacological activity of the total extracts and individual secondary metabolites of the marsh cinquefoil have been studied; anti-inflammatory, hypoglycemic, nephroprotective, antiviral, antioxidant and other types of biological activity have been experimentally confirmed. Literature data analysis showed that the marsh cinquefoil represents a rich source of biologically active substances and is promising for the creation of new drugs, therefore, further study of its metabolites and their biological activity is of great interest.

scholarly journals RHAPONTICUM UNIFLORUM: CHEMICAL COMPONENTS AND BIOLOGICAL ACTIVITY

2018 ◽  
pp. 5-20 ◽  
Author(s):  
Даниил (Daniil) Николаевич (Nikolaevich) Оленников (Olennikov) ◽  
Нина (Nina) Игоревна (Igorevna) Кащенко (Kashchenko)
Keyword(s):  
Amino Acids ◽  
Biological Activity ◽  
Plant Species ◽  
Chromatographic Analysis ◽  
Wide Spectrum ◽  
Scientific Data ◽  
Chemical Components ◽  
Scientific Interest ◽  
Quantitative Content ◽  
Asteraceae Family

Rhaponticum uniflorum (L.) DC. is a plant species of the Asteraceae family, widely used in traditional medicine in the Easteren Asia. Currently R. uniflorum is a subject of scientific interest of the chemists, biologists, pharmacologists, and others. This review includes scientific data from 1991 to 2017. The investigation of the chemodiversity of R. uniflorum showed the presence of more than 100 compounds, including sesquiterpenes, diterpenes, ecdysteroids, triterpenes, sterols, thiophenes, flavonoids, amino acids, fatty acids, etc. Ecdysteroids and triterpenes (more than 40 compounds) are the most studied groups of substances of R. uniflorum. The data about the methods of chromatographic analysis of terpenoids and phenolic compounds, as well as the quantitative content of some compounds in various organs of R. uniflorum are summarized in this paper. It is shown that the extracts and some compounds of R. uniflorum possess a wide spectrum of biological activity, including anxiolytic, stress-protective, actoprotective, antihypoxic, anabolic, hepatoprotective, inhibiting PPARγ receptors, anti-inflammatory, antitumor, immunostimulating, antiatherosclerotic, hypolipidemic effects. However, in spite of the known information about the pharmacological activity of R. uniflorum, the data of clinical trials are absent, thereby further investigations of this plant species is necessary.

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