scholarly journals Comparative study of photosynthetic pigments in the leaves of forage plants of the cryolithozone of Yakutia

2021 ◽  
Vol 941 (1) ◽  
pp. 012031
Author(s):  
V V Nokhsorov ◽  
K A Petrov
Keyword(s):  
Photosynthetic Pigments ◽  
Special Role ◽  
Forage Plants ◽  
Chlorophylls A And B ◽  
Physiologically Active Substances ◽  
Green Pigments ◽  
Layer Chromatography ◽  
Active Substances ◽  
Β Carotene ◽  
Visual Apparatus

Abstract Thin-layer chromatography and spectrophotometry were used to determine the content of photosynthetic pigments (chlorophylls a and b, carotenoids) in green leaves of forage plants. It was found that the content of carotenoids was high for forage grasses with a high content of green pigments. It was revealed that β-carotene plays the most important role since it is a precursor of vitamin A and lutein, which has a high antioxidant (protective) property. According to modern concepts, lutein and β-carotene actively function in various organs of herbivores. They play a special role in the functioning of the mammalian visual apparatus, protecting this organ from the light factor. In addition, lutein is one of the physiologically active substances that make up cow’s milk.

Interactions between Photosynthetic Pigments Bound to Lipid and Protein Particles. Spectroscopic Properties

1979 ◽  
Vol 34 (7-8) ◽  
pp. 582-587
Author(s):  
Framçoise Techy ◽  
Monique Dinant ◽  
Jacques Aghion
Keyword(s):  
Chlorophyll A ◽  
Photosynthetic Pigments ◽  
Relative Concentration ◽  
Spectroscopic Properties ◽  
Chlorophyll B ◽  
Pheophytin A ◽  
Chlorophylls A And B ◽  
Protein Particles ◽  
Β Carotene

Abstract The spectroscopic (visible) properties of pigment-bearing lipid and protein particles extract­ ed from milk show that: 1) chlorophylls a and b bound to separate particles can form aggregates provided their relative concentration is high enough. Neither pheophytin a nor β-carotene, in the same conditions, form observable aggregates. 2) Chlorophylls a and b can co-aggregate when they are bound to the same particles. Pheophytin a as well as β-carotene seem to prevent the aggregation of chlorophyll a. β-carotene has no effect on the aggregation of chlorophyll b.

scholarly journals Efficiency of growing cotton with physiological active substance without application of mineral fertilizers in the case of Uzbekistan

2021 ◽  
Vol 244 ◽  
pp. 02021
Author(s):  
Shukhrat Abdualimov ◽  
Dilobar Rakhimova
Keyword(s):  
Fairy Tales ◽  
Active Substance ◽  
Practical Experience ◽  
Mineral Fertilizers ◽  
Special Role ◽  
Cotton Industry ◽  
Physiologically Active Substances ◽  
The Republic ◽  
Positive Results ◽  
Active Substances

Cotton growing is the main industry in Uzbekistan’s agriculture, and the country has accumulated a great deal of scientific and practical experience in cotton growing. A number of scientific studies is being undertaken in this regard. Especially in the cotton industry of the republic in recent years, the widespread use of physiologically active substances in the cultivation of fairy tales, high and quality crops has achieved positive results. Physiologically active substances are added to the soil, or the seed is applied to the seed before planting and can be used during the cotton growing season. We believe that the physiologically active substances used have a natural basis and their safety can play a special role in the cultivation of organic cotton. This article explores the potential for seed germination, cotton growth and development, and the cultivation of future, high-quality, environmentally friendly cotton when Tevevit Boms physiologically active substance is applied at a rate of 300-1,000 kg/ha during the preparation of the soil for planting without the use of chemical mineral fertilizers.

scholarly journals BACTERIA ENTEROBACTER NIMIPRESSURALIS 32-3 – THE PRODUCER OF PHYTOHORMONES

2009 ◽  
Vol 9 ◽  
pp. 68-75
Author(s):  
L.A. Chaykovska ◽  
M.I. Baranska
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Physiologically Active Substances ◽  
Layer Chromatography ◽  
Active Substances

Qualitative (bioassays) and quantitative (thin-layer chromatography) determination of phytohormones produced by the bacterium Enterobacter nimipressuralis 32-3 were carried out. It was established, that cultural liquid of strаin contains physiologically active substances of three classes of phytohormones: auxin, gibberellin and citokinin.

scholarly journals Recent Advances in Quenchbody, a Fluorescent Immunosensor

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1223
Author(s):  
Jinhua Dong ◽  
Hiroshi Ueda
Keyword(s):  
Fluorescence Intensity ◽  
Fluorescent Dyes ◽  
Antibody Fragment ◽  
Disease Diagnosis ◽  
Disease Biomarkers ◽  
Highly Sensitive ◽  
Physiologically Active Substances ◽  
New Type ◽  
Antigen Antibody ◽  
Active Substances

The detection of viruses, disease biomarkers, physiologically active substances, drugs, and chemicals is of great significance in many areas of our lives. Immunodetection technology is based on the specificity and affinity of antigen–antibody reactions. Compared with other analytical methods such as liquid chromatography coupled with mass spectrometry, which requires a large and expensive instrument, immunodetection has the advantages of simplicity and good selectivity and is thus widely used in disease diagnosis and food/environmental monitoring. Quenchbody (Q-body), a new type of fluorescent immunosensor, is an antibody fragment labeled with fluorescent dyes. When the Q-body binds to its antigen, the fluorescence intensity increases. The detection of antigens by changes in fluorescence intensity is simple, easy to operate, and highly sensitive. This review comprehensively discusses the principle, construction, application, and current progress related to Q-bodies.

ChemInform Abstract: Progress in the Field of Physiologically Active Substances of Lanosterol Series

ChemInform ◽  
2010 ◽  
Vol 24 (30) ◽  
pp. no-no
Author(s):  
I. G. RESHETOVA ◽  
R. K. TKHAPER ◽  
A. V. KAMERNITSKII
Keyword(s):  
Physiologically Active Substances ◽  
Active Substances
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