Pub Date : 2020-12-15DOI: 10.46991/PYSU:B/2020.54.3.196
S. Badalyan, S. Rapior
The Agaricomycetes mushrooms (phylum Basidiomycota) are recognised sources of valuable food and medicines. They are producers of bioactive compounds (phenolics, polysaccharides, proteins, steroids, terpenoids, etc.) possessing around 130 therapeutic effects (antimicrobial, anti-inflammatory, antioxidant, immunomodulatory, etc.). Mushrooms are also reported as potential neurotrophic and neuroprotective agents. Seventeen edible and inedible agaricomycetous species from different taxonomic and ecological groups have been reported in Armenia to possess neuroprotective activity. Evaluation resource value and biotechnological potential of Armenian agaricomycetous mushrooms will assist further development of novel myco-pharmaceuticals to prevent and mitigate different disorders, including neurodegenerative.
{"title":"AGARICOMYCETES MEDICINAL MUSHROOMS WITH POTENTIAL NEUROPROTECTIVE ACTIVITY GROWING IN ARMENIA","authors":"S. Badalyan, S. Rapior","doi":"10.46991/PYSU:B/2020.54.3.196","DOIUrl":"https://doi.org/10.46991/PYSU:B/2020.54.3.196","url":null,"abstract":"The Agaricomycetes mushrooms (phylum Basidiomycota) are recognised sources of valuable food and medicines. They are producers of bioactive compounds (phenolics, polysaccharides, proteins, steroids, terpenoids, etc.) possessing around 130 therapeutic effects (antimicrobial, anti-inflammatory, antioxidant, immunomodulatory, etc.). Mushrooms are also reported as potential neurotrophic and neuroprotective agents. Seventeen edible and inedible agaricomycetous species from different taxonomic and ecological groups have been reported in Armenia to possess neuroprotective activity. Evaluation resource value and biotechnological potential of Armenian agaricomycetous mushrooms will assist further development of novel myco-pharmaceuticals to prevent and mitigate different disorders, including neurodegenerative.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86299100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-15DOI: 10.46991/pysu:b/2020.54.3.229
Ts. I. Adamyan, S. Minasyan, E. Gevorkyan, L. Ghukasyan, K. V. Baghdasaryan
Rich in natural antioxidants, Stevia rebaudiana has immunoregulatory, anti-stress, anti-inflammatory, antiviral, antihistaminic properties, increases the body's nonspecific defense, bioenergetic level, and improves tissue respiration. We have studied the long-term effect of S. rebaudiana on morphofunctional parameters of peripheral blood.
{"title":"EFFECT OF $STEVIA$ $REBAUDIANA$ ON MORPHO-FUNCTIONAL INDICATORS OF PERIPHERAL BLOOD","authors":"Ts. I. Adamyan, S. Minasyan, E. Gevorkyan, L. Ghukasyan, K. V. Baghdasaryan","doi":"10.46991/pysu:b/2020.54.3.229","DOIUrl":"https://doi.org/10.46991/pysu:b/2020.54.3.229","url":null,"abstract":"Rich in natural antioxidants, Stevia rebaudiana has immunoregulatory, anti-stress, anti-inflammatory, antiviral, antihistaminic properties, increases the body's nonspecific defense, bioenergetic level, and improves tissue respiration. We have studied the long-term effect of S. rebaudiana on morphofunctional parameters of peripheral blood.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81017040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-15DOI: 10.46991/pysu:b/2020.54.3.265
Editorial Board of “Proceedings of the YSU”
{"title":"IN MEMORY OF PROF. ARMEN TRCHOUNIAN","authors":"Editorial Board of “Proceedings of the YSU”","doi":"10.46991/pysu:b/2020.54.3.265","DOIUrl":"https://doi.org/10.46991/pysu:b/2020.54.3.265","url":null,"abstract":"","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75628170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-15DOI: 10.46991/pysu:b/2020.54.3.181
G. S. Grigoryan, A. Malkhassyan
The esterification of sucrose with stearic, palmitic and oleic acids yields the corresponding esters. Effective methods have been developed for carrying out the esterification reaction at temperatures of 150–170℃ in high-boiling aprotic dipolar solvents.
{"title":"SYNTHESIS OF SUCROSE ESTERS WITH STEARIC, PALMITIC AND OLEIC ACIDS","authors":"G. S. Grigoryan, A. Malkhassyan","doi":"10.46991/pysu:b/2020.54.3.181","DOIUrl":"https://doi.org/10.46991/pysu:b/2020.54.3.181","url":null,"abstract":"The esterification of sucrose with stearic, palmitic and oleic acids yields the corresponding esters. Effective methods have been developed for carrying out the esterification reaction at temperatures of 150–170℃ in high-boiling aprotic dipolar solvents.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90692492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-15DOI: 10.46991/pysu:b/2019.53.1.046
L. Hambaryan, G. Gevorgyan
A modern study of the Arpa River and its tributaries allows evaluating the ecological state of the ecosystem according to phytoplankton development indicators and comparing it with previous data. It is known that modified control of hydrosystems for hydropower stations changes quantitative and qualitative indicators of water, which increases anthropogenic impact on the diversity of hydrobionts. In order to mitigate the environmental risks and improve the ecosystem self-cleaning it is necessary to carry out continuous monitoring and rapid assessment of the change in the composition of microalgae indicators.
{"title":"INVESTIGATIONS OF FORMATION OF PHYTOPLANKTON COMMUNITY IN THE ARPA RIVER (ARMENIA) AND ITS MAIN TRIBUTARIES","authors":"L. Hambaryan, G. Gevorgyan","doi":"10.46991/pysu:b/2019.53.1.046","DOIUrl":"https://doi.org/10.46991/pysu:b/2019.53.1.046","url":null,"abstract":"A modern study of the Arpa River and its tributaries allows evaluating the ecological state of the ecosystem according to phytoplankton development indicators and comparing it with previous data. It is known that modified control of hydrosystems for hydropower stations changes quantitative and qualitative indicators of water, which increases anthropogenic impact on the diversity of hydrobionts. In order to mitigate the environmental risks and improve the ecosystem self-cleaning it is necessary to carry out continuous monitoring and rapid assessment of the change in the composition of microalgae indicators.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88613828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-18DOI: 10.46991/pysu:b/2019.53.3.200
A. Mamyan, L. Stepanyan, L. Hambaryan, V.M. Varagyan, G. Gevorgyan
Phytoplankton quantitative and qualitative parameters in “Yerevanyan Lich” Reservoir and the Hrazdan River were investigated in April and June–August 2015. The results of the study showed that algal bloom registered in “Yerevanyan Lich” Reservoir in summer 2015 created new environmental conditions which led to significant changes in reservoir’s phytoplankton dominant complex, affecting also phytoplankton composition in the Hrazdan River sites located downstream from the reservoir.
{"title":"INVESTIGATION OF PHYTOPLANKTON COMMUNITY IN “YEREVANYAN LICH” RESERVOIR AND THE HRAZDAN RIVER IN THE CONDITIONS OF ALGAL BLOOM","authors":"A. Mamyan, L. Stepanyan, L. Hambaryan, V.M. Varagyan, G. Gevorgyan","doi":"10.46991/pysu:b/2019.53.3.200","DOIUrl":"https://doi.org/10.46991/pysu:b/2019.53.3.200","url":null,"abstract":"Phytoplankton quantitative and qualitative parameters in “Yerevanyan Lich” Reservoir and the Hrazdan River were investigated in April and June–August 2015. The results of the study showed that algal bloom registered in “Yerevanyan Lich” Reservoir in summer 2015 created new environmental conditions which led to significant changes in reservoir’s phytoplankton dominant complex, affecting also phytoplankton composition in the Hrazdan River sites located downstream from the reservoir.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79158782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46991/pysu:b/2019.53.2.113
E. Gevorkyan, L. Ghukasyan
Shifts in some cardiac hemodynamic parameters were studied in students during a 15-minute cycle ergometer load attended with cold inhalation of clove essential oil. It is shown that the use of essential oil of cloves contributes to the alignment of shifts in the level of functional indicators of students, by increasing the adaptive capacity of the organism. Essential oil of cloves causes a decrease of “physiological cost” of physical activity performed by students by strengthening the economization processes of functional systems activity. Curing an increase in the sympathetic effects on the body, induced by physical activity, the oil of cloves contributes to the rapid restoration of the functional state of the body in the nearest post-load period. As a control, indicators of the functional state and cardiac hemodynamics of students who, during bicycle ergometer load, were not subjected to the corrective influence of the essential oil of cloves, were used.
{"title":"APPLICATION OF CLOVE ESSENTIAL OIL FOR CORRECTION OF SHIFTS IN HEMODYNAMIC PARAMETERS IN STUDENTS INDUCED BY CYCLE ERGOMETER EXERCISE","authors":"E. Gevorkyan, L. Ghukasyan","doi":"10.46991/pysu:b/2019.53.2.113","DOIUrl":"https://doi.org/10.46991/pysu:b/2019.53.2.113","url":null,"abstract":"Shifts in some cardiac hemodynamic parameters were studied in students during a 15-minute cycle ergometer load attended with cold inhalation of clove essential oil. It is shown that the use of essential oil of cloves contributes to the alignment of shifts in the level of functional indicators of students, by increasing the adaptive capacity of the organism. Essential oil of cloves causes a decrease of “physiological cost” of physical activity performed by students by strengthening the economization processes of functional systems activity. Curing an increase in the sympathetic effects on the body, induced by physical activity, the oil of cloves contributes to the rapid restoration of the functional state of the body in the nearest post-load period. As a control, indicators of the functional state and cardiac hemodynamics of students who, during bicycle ergometer load, were not subjected to the corrective influence of the essential oil of cloves, were used.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79955432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46991/pysu:b/2019.53.3.206
A. Hovsepyan, A. Mamyan, T. Khachikyan, I. Tikhonova, O. Belykh, G. Gevorgyan
The current status of phytoplankton community in Lake Sevan (LS) was investigated. Water samples for phytoplankton and mineral phosphorus analyses were collected seasonally (spring–fall) in 2018. The results of the study showed that the unstabilized processes and nutrient pollution of the lake ecosystem led to bluegreen algae bloom in July. All of this caused ecological and toxicological risks to the lake ecosystem and the environment and may lead to further algal blooms in LS.
{"title":"MONITORING OF PHYTOPLANKTON STATUS IN LAKE SEVAN (ARMENIA) IN 2018","authors":"A. Hovsepyan, A. Mamyan, T. Khachikyan, I. Tikhonova, O. Belykh, G. Gevorgyan","doi":"10.46991/pysu:b/2019.53.3.206","DOIUrl":"https://doi.org/10.46991/pysu:b/2019.53.3.206","url":null,"abstract":"The current status of phytoplankton community in Lake Sevan (LS) was investigated. Water samples for phytoplankton and mineral phosphorus analyses were collected seasonally (spring–fall) in 2018. The results of the study showed that the unstabilized processes and nutrient pollution of the lake ecosystem led to bluegreen algae bloom in July. All of this caused ecological and toxicological risks to the lake ecosystem and the environment and may lead to further algal blooms in LS.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81979157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-20DOI: 10.46991/pysu:b/2018.52.3.198
K. Ghazaryan, H. Movsesyan, G. Gevorgyan, H. Khachatryan, S. Antonyan, R. Avetisyan
The aim of the present study was the assessment of soil pollution by some potentially toxic trace elements in the environs of Akhtala Mining and Processing Enterprise and related environmental risks. The study was implemented in 2018. The level of soil contamination with trace elements was assessed by Enrichment factor, which is widely used as a contamination index. The study revealed that the soils, almost in all studied sites, were polluted by Cu, Pb, Zn, Co and Ni. From all trace elements studied the highest contents compared with background were observed for copper. Such situation is conditioned by anthropogenic factor, in particular, by mining activities since copper is the main metal extracted in Akhtala Mining and Processing Enterprise.
{"title":"ENVIRONMENTAL RISK ASSESSMENT OF SOIL POLLUTION BY SOME TRACE ELEMENTS AROUND OPEN MINE AND TAILING DUMP OF AKHTALA MINING AND PROCESSING ENTERPRISE","authors":"K. Ghazaryan, H. Movsesyan, G. Gevorgyan, H. Khachatryan, S. Antonyan, R. Avetisyan","doi":"10.46991/pysu:b/2018.52.3.198","DOIUrl":"https://doi.org/10.46991/pysu:b/2018.52.3.198","url":null,"abstract":"The aim of the present study was the assessment of soil pollution by some potentially toxic trace elements in the environs of Akhtala Mining and Processing Enterprise and related environmental risks. The study was implemented in 2018. The level of soil contamination with trace elements was assessed by Enrichment factor, which is widely used as a contamination index. The study revealed that the soils, almost in all studied sites, were polluted by Cu, Pb, Zn, Co and Ni. From all trace elements studied the highest contents compared with background were observed for copper. Such situation is conditioned by anthropogenic factor, in particular, by mining activities since copper is the main metal extracted in Akhtala Mining and Processing Enterprise.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82172111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-20DOI: 10.46991/pysu:b/2018.52.3.204
A.L. Varagyan, G. Gevorgyan, V.M. Varagyan
Agricultural risks of mineral salt (Ca2+, Mg2+, K+, Na+, SO42- , Cl- , CO32- , HCO3- ) content in the water of the Voghji River catchment basin were assessed. Water sampling and hydrochemical analyses were implemented in July and September 2017. The results of the study showed that anthropogenic salt level in the Voghji River water site located downstream from Kapan Town and in the area of the Norashenik River mouth may have posed serious health risks to irrigated soils and crops.
{"title":"MINERAL SALT CONTENT IN THE WATER OF THE VOGHJI RIVER CATCHMENT BASIN (ARMENIA): ASSESSMENT OF POTENTIAL EFFECTS ON IRRIGATED SOILS AND CROPS","authors":"A.L. Varagyan, G. Gevorgyan, V.M. Varagyan","doi":"10.46991/pysu:b/2018.52.3.204","DOIUrl":"https://doi.org/10.46991/pysu:b/2018.52.3.204","url":null,"abstract":"Agricultural risks of mineral salt (Ca2+, Mg2+, K+, Na+, SO42- , Cl- , CO32- , HCO3- ) content in the water of the Voghji River catchment basin were assessed. Water sampling and hydrochemical analyses were implemented in July and September 2017. The results of the study showed that anthropogenic salt level in the Voghji River water site located downstream from Kapan Town and in the area of the Norashenik River mouth may have posed serious health risks to irrigated soils and crops.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78786750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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