scholarly journals Variation in concentrations of major bioactive compounds in Prunella vulgaris L. related to plant parts and phenological stages

2012 ◽  
Vol 45 (2) ◽  
pp. 171-175 ◽  
Author(s):  
Yuhang Chen ◽  
Zaibiao Zhu ◽  
Qiaosheng Guo ◽  
Lixia Zhang ◽  
Xiaoming Zhang
2021 ◽  
Author(s):  
Smita G. Bhat

Plants have been used as a source of medicine for the treatment of different diseases from thousands of years ago. There is numerous evidences are available for use of plants as a medicine in the treatment of diseases in Indian, Egyptian, Chinese, Greek and Roman system of medicine. Pharmacognosy is the study of medicines derived from natural sources, mainly from plants which may further lead to development of new drug. The exploration, extraction and screening of biological diversity such as herbs, spices, microbes and other natural resources is the worldwide activity in recent years. Phytochemicals are the naturally available bioactive compounds which are derived from different plant parts and are primarily responsible for biological activities. The most important chemical compounds which are present in the plants are alkaloids, phenols, saponins, carbohydrates, terpenoids, steroids, flavonoids and tannins etc.


2017 ◽  
Vol 12 (1) ◽  
pp. 348-354 ◽  
Author(s):  
Xue-Rong Zhang ◽  
Yu-Hang Chen ◽  
Qiao-Sheng Guo ◽  
Wen-Ming Wang ◽  
Li Liu ◽  
...  

2007 ◽  
Vol 117 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Cüneyt Çιrak ◽  
Jolita Radušienė ◽  
Valdimaras Janulis ◽  
Liudas Ivanauskas

Author(s):  
رشا عبد المقصود محمد حمزة ◽  
یوسف عبد العزیز الحسانین ◽  
عبیر السید حسن الخمیسى ◽  
ریعان عبد المنعم سید

Author(s):  
Lerato Nellvecia Madike ◽  
Samkeliso Takaidza ◽  
Michael Pillay

Tulbaghia violacea has been used extensively in South African traditional medicine for treatment of a number of ailments. Few studies have examined the bioactive compounds present in the plant. This study assessed the phytochemicals present in the leaves, stems and roots of T. violacea. The phytochemicals were extracted separately with distilled water and 70% ethanol by maceration. A wide variety of pharmacologically active compounds such as tannins, terpenoids, flavonoids, saponins, proteins, steroids, cardiac glycosides, phenols and coumarins were present in some of the T. violacea plant parts. However, phlobatannins, leucoanthocyanins, alkaloids, carbohydrates and anthocyanins were absent in the plant. This study showed that most of the phytocompounds were present in the leaves of T. violacea compared to the stem and roots. This is significant for conserving the species since the leaves of the plant can be harvested for medicinal use while the rest of the plant is left intact for regeneration of the plant. This study also showed that the two solvents extracted different amounts and types of phytochemicals from the different parts of the plant suggesting that a single solvent may not be able to extract all the known bioactive compounds from a plant.


Proceedings ◽  
2019 ◽  
Vol 29 (1) ◽  
pp. 45
Author(s):  
Alice GRIGORE ◽  
Lucia PIRVU ◽  
Corina BUBUEANU ◽  
Ioan PUIU

Cannabis sativa L. (hemp) is a unique versatile plant, which can provide high biomass quantities [...]


Weed Science ◽  
1987 ◽  
Vol 35 (1) ◽  
pp. 6-10 ◽  
Author(s):  
Bruce D. Maxwell ◽  
Michael E. Foley ◽  
Peter K. Fay

Glyphosate [N-(phosphonomethyl)glycine] was applied in the spring and fall to leafy spurge (Euphorbia esulaL. # EPHES) in the field at rates of 0.14 to 4.48 kg ai/ha. Fall applications of glyphosate at rates of 0.56 to 4.48 kg/ha stimulated axillary branching and caused an increase in the number of stems/m2by the end of the following summer in a dense population. This was a result of shoot growth from buds on the crown region of the root system. The absorption and translocation of14C-glyphosate applied to leaves of mature leafy spurge plants were evaluated at prebloom, full-bloom, and senescence phenological stages. Approximately 81% of the14C-glyphosate applied to the leaves of senescing plants was absorbed. There was a decrease in the proportion of14C translocated out of the treated leaf when applications were made after full bloom. Translocation of14C to the treated stem, nontreated stems, root crown, and roots did not differ with phenological stage in 1983. Translocation and concentration of14C in most plant parts in 1985 differed with phenological stage. Translocation to the crown buds as a percentage of the14C absorbed was highest at the senescence stage. At senescence and before soil freezing, leafy spurge crown buds demonstrate transient but active elongation toward the soil surface. This active development may account for the enhanced translocation of14C into the crown buds.


2008 ◽  
Vol 50 (5) ◽  
pp. 575-580 ◽  
Author(s):  
Cüneyt Çirak ◽  
Jolita Radusiene ◽  
Valdimaras Janulis ◽  
Liudas Ivanauskas

PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0232599 ◽  
Author(s):  
Yassine Yahia ◽  
Mohamed Ali Benabderrahim ◽  
Nizar Tlili ◽  
Mohamed Bagues ◽  
Kameleddine Nagaz

2020 ◽  
Vol 17 (36) ◽  
pp. 831-844
Author(s):  
Kutayba Farhan DAWOOD ◽  
Ayoob Obaid ALFALAHI ◽  
Shamil Ismail NEAMAH ◽  
Omar Mahmood DHANNOON

Plants used in folk medicine not only represent rich sources for therapeutic materials, but it also plays a crucial role in developing completely or partially novel synthesized drugs. Mharut plant (Ferula rutbaensis) is an integral part of Bedouin therapeutic practices in the western desert of Anbar province-Iraq. Still, to date, this is the first study describing its phytochemical constituents. The plant was growing near the Iraq-Saudi Arabia borders and adapted to a wide range of soils. Traditionally, F. rutbaensis has been widely used to treat acne, stomach and bowel disorders, food poisoning and respiratory problems. Fresh plant samples were collected and morphologically characterized. Likewise, the ITS-based DNA barcoding technique was efficiently used to approve the morphological identification of F. rutbaensis. The GC-MS spectrum was adopted in the phytochemical characterization of aqueous and methanol extracts of fresh and dry plant parts. The aqueous extract of dry roots was the richest source for bioactive compounds than fresh or methanolic extracts of either fresh or dry plant parts. In general, the detected phytochemicals falling into fatty acids, terpenes, hydrocarbon alkanes, and esters. Notably, fatty acids in Oleic and Palmitic acids were the two most abundant bioactive compounds in both aqueous and methanolic extracts of plant fresh and dry roots. The detected unsaturated fatty acids and/or other bioactive components are laying behind the therapeutic properties of F. rutbaensis that can be useful ingredients to prepare Mharut-based cosmetics such as medical soaps, body lotions, skin conditioners and sunscreens. Additionally, some other components were found to have anti-inflammatory, antioxidants, and antimicrobial properties. Further investigations will be necessary to confirm the antimicrobial activity of F. rutbaensis extracts.


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