scholarly journals Biochemical and Histo-Anatomical Responses of Lavandula angustifolia Mill. to Spruce and Beech Bark Extracts Application

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 859
Author(s):  
Corneliu Tanase ◽  
Ruxandra Ștefănescu ◽  
Béla Darkó ◽  
Daniela Lucia Muntean ◽  
Anca Corina Fărcaş ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Biological Activities ◽  
Leaf Tissue ◽  
Volatile Oil ◽  
Bark Extract ◽  
Lavandula Angustifolia ◽  
Spruce Bark ◽  
Biological Responses ◽  
Forest Waste ◽  
Pigment Accumulation

This paper aims to assess the biological responses of Lavandula angustifolia Mill. to beech and spruce bark crude extract application. Thus, the biological activity of bark extracts was assessed by determining the germination capacity, biomass production, histo-anatomical aspects and photo-assimilatory pigment accumulation, and by quantitative and qualitative volatile compounds analysis. The application of spruce bark extract (500 mg dry bark/100 mL solvent) resulted in a better development of the leaf tissue and an increase in foliar biomass. We observed the stimulating effect of photo-assimilating pigments accumulation, for all experimental variants, compared to the control. Also, the amount of volatile oil was significantly higher in the treated plants with spruce bark extract (500 mg dry bark/100 mL solvent). Some volatile compounds (cyclen, borneol, cryptone, santalen, and caryophyllene oxide β—farnesene) were identified only in the experimental variants. Also, in the experimental variants, an increase in the quantity of limonene, linalyl acetate and lavandulol was observed. These preliminary results showed that the beech and spruce bark extracts can have biological activities and influence the production of volatile oil in Lavandula angustifolia, causing significant changes in the phytochemical profile of the essential oil. Thus, forest waste bark extracts could be recommended as natural bioregulators in lavender crops.

scholarly journals Effects of Beech Bark Extract in the Sage (Salvia Officinalis L.) Plant Growth and Volatile Oil Profile

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 676 ◽  
Author(s):  
Corneliu Tanase ◽  
Ruxandra Ștefănescu ◽  
Diana Gabriela Gheorghieș ◽  
Loredana Dandu ◽  
Adrian Nisca ◽  
...  
Keyword(s):  
Vascular Tissue ◽  
Biomass Accumulation ◽  
Growth Stimulation ◽  
Volatile Oil ◽  
Salvia Officinalis ◽  
Bark Extract ◽  
Experimental Variant ◽  
Treated Plant ◽  
Salvia Officinalis L ◽  
Pigment Accumulation

The use of bioactive compounds can act in growth stimulation and also influence the biosynthesis of the metabolites in plants. The aim of this paper is to assess the influence of the beech (Fagus sylvatica L.) bark crude extract (BBCE) on the growth and development of sage (Salvia officinalis L.) plants. Special attention was given to the analysis of volatile oil obtained from the sage treated plant. Thus, the biological activity of BBCE was assessed by determining the germination capacity, biomass accumulation, histo-anatomical aspects, and photoassimilatory pigment accumulation, quantitative, and qualitative sage volatile oil analysis. The results show stimulation of the biomass and photoassimilatory pigment accumulation. The mesophyll thickness and the vascular tissue surface are smaller in the treated variants, compared to the control. On the other hand, the amount of volatile oil was significantly higher in the treated plants. In the experimental variants, an increase in the quantity of eucalyptol, camphor, camphene, and α-caryophyllene is observed. The amount of eucalyptol increased in the experimental variant, with about 82%, compared to the control. BBCE could be properly used as natural bioregulators because according to our results seems to improve the yield of the sage crop. The results of this research have the potential to contribute greatly to ecological agricultural production.

scholarly journals Antibacterial and Antioxidant Potential of Silver Nanoparticles Biosynthesized Using the Spruce Bark Extract

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1541 ◽  
Author(s):  
Corneliu Tanase ◽  
Lavinia Berta ◽  
Năstaca Alina Coman ◽  
Ioana Roșca ◽  
Adrian Man ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Silver Nanoparticles ◽  
Metal Ion ◽  
Color Change ◽  
Biological Activities ◽  
Stem Bark ◽  
Bark Extract ◽  
Solution Ph ◽  
Spruce Bark ◽  
Vis Spectroscopy

Biosynthesized silver nanoparticles (AgNPs) are widely used in Pharmacy and Medicine. In particular, AgNPs synthesized and mediated by plant extracts have shown topossess several biological activities. In the present study, AgNPs were synthesized using Picea abies L. stem bark extract as reducing agent. Factors, such as metal ion solution, pH, and time, which play a role in the AgNPs synthesis, were assessed. The synthesized AgNPs were characterized by Ultraviolet-Visible Spectrometry, Fourier transform infrared spectroscopy, and Transmission Electron Microscopy (TEM). Further, the study has been extended to evaluate the antimicrobial and antioxidant activity of AgNPs. The broad peak obtained at 411–475 nm (UV-Vis spectroscopy), and the color change pattern, confirmed the synthesis of AgNPs. TEM results showed spherical or rarely polygonal AgNPs with an average size of 44 nm at pH = 9. The AgNPs showed antioxidant activity and antibacterial effect against human pathogenic Gram-positive and Gram-negative bacteria. The results show that spruce bark extract is suitable for obtaining AgNPs, with antibacterial and antioxidant activity.

A Prospective Review on Phyto-pharmacological Aspects of Vitex negundo Linn.

2019 ◽  
Vol 05 ◽  
Author(s):  
Mohd Faisal Khan ◽  
Poonam Arora ◽  
Mahaveer Dhobi
Keyword(s):  
Chlorogenic Acid ◽  
Biological Activities ◽  
Volatile Oil ◽  
Vitex Negundo ◽  
Bioactive Constituents ◽  
Traditional System ◽  
Comprehensive Information ◽  
Medicinal Properties ◽  
Main Components ◽  
Important Drug

Background: Vitex negundo Linn. commonly known as five leave chase tree is an ethnobotanically important drug in traditional system of medicine. The plant is widely distributed in India, China and other Asian and American countries. Objective: The review aims at presenting comprehensive information with respect to ethnopharmacological rele-vance and recent findings on phytochemical and biological activities of Vitex negundo. Method: Literature was collected from various sources such as pubmed, scopus, science direct, and others. Results: Extracts and secondary metabolites of this plant, particularly those from roots and leaves, possess useful pharmacological activities such as anti-inflammatory, antitumor, antioxidant, antimicrobial, galactagogue, antigas-tric, antiflatulant, antiparasitic, analgesic, hepatoprotective and antihypertensive, some of which have been vali-dated scientifically. All parts of plant especially leave and roots contain a large number of bioactive phytoconstitu-ents including flavonoids, iridoids, lignans, volatile oil, terpenes, coumarins, phenolic and steroidal compounds which impart it multiple medicinal properties. Vitexin, isovitexin, viridifol, caffeic acid, chlorogenic acid and iso-chlorogenic acid are the main components. Conclusion: The review emphasises the medicinal importance of Vitex negundo and its bioactive constituents in traditional system of medicine.

scholarly journals Allelopathic Effect of Serphidium kaschgaricum (Krasch.) Poljak. Volatiles on Selected Species

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 495
Author(s):  
Shixing Zhou ◽  
Toshmatov Zokir ◽  
Yu Mei ◽  
Lijing Lei ◽  
Kai Shi ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Volatile Oil ◽  
Amaranthus Retroflexus ◽  
Allelopathic Effect ◽  
Chemical Profile ◽  
Volatile Oils ◽  
Phytotoxic Activity ◽  
Volatile Organic ◽  
First Time ◽  
Stem Leaf

The chemical profile and allelopathic effect of the volatile organic compounds (VOCs) produced by a dominant shrub Serphidium kaschgaricum (Krasch.) Poljak. growing in northwestern China was investigated for the first time. Serphidium kaschgaricu was found to release volatile compounds into the surroundings to affect other plants’ growth, with its VOCs suppressing root elongation of Amaranthus retroflexus L. and Poa annua L. by 65.47% and 60.37% at 10 g/1.5 L treatment, respectively. Meanwhile, volatile oils produced by stems, leaves, flowers and flowering shoots exhibited phytotoxic activity against A. retroflexus and P. annua. At 0.5 mg/mL, stem, leaf and flower oils significantly reduced seedling growth of the receiver plants, and 1.5 mg/mL oils nearly completely prohibited seed germination of both species. GC/MS analysis revealed that among the total 37 identified compounds in the oils, 19 of them were common, with eucalyptol (43.00%, 36.66%, 19.52%, and 38.68% in stem, leaf, flower and flowering shoot oils, respectively) and camphor (21.55%, 24.91%, 21.64%, and 23.35%, respectively) consistently being the dominant constituents in all oils. Eucalyptol, camphor and their mixture exhibited much weaker phytotoxicity compared with the volatile oils, implying that less abundant compounds in the volatile oil might contribute significantly to the oils’ activity. Our results suggested that S. kaschgaricum was capable of synthesizing and releasing allelopathic volatile compounds into the surroundings to affect neighboring plants’ growth, which might improve its competitiveness thus facilitate the establishment of dominance.

Microscopy of Eugenia involucrata, Chemical Composition and Biological Activities of the Volatile Oil

2021 ◽  
Author(s):  
Wagner D’Almeida ◽  
Luciane Mendes Monteiro ◽  
Vijayasankar Raman ◽  
Junaid Ur Rehman ◽  
Katia Sabrina Paludo ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Biological Activities ◽  
Volatile Oil

Effects on volatile oil and volatile compounds of Amomum tsao-ko with different pre-drying and drying methods

2021 ◽  
Vol 174 ◽  
pp. 114168
Author(s):  
Huiwei Qin ◽  
Shaobing Yang ◽  
Meiquan Yang ◽  
Yuanzhong Wang ◽  
Tianmei Yang ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Volatile Oil ◽  
Drying Methods

scholarly journals Pharmacology and Phytochemistry of Ecuadorian Medicinal Plants: An Update and Perspectives

2021 ◽  
Vol 14 (11) ◽  
pp. 1145
Author(s):  
Chabaco Armijos ◽  
Jorge Ramírez ◽  
Melissa Salinas ◽  
Giovanni Vidari ◽  
Alírica I. Suárez
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Secondary Metabolites ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Biological Activities ◽  
Indigenous Communities ◽  
Therapeutic Agents ◽  
Practical Applications ◽  
Pharmacological Studies

The use of plants as therapeutic agents is part of the traditional medicine that is practiced by many indigenous communities in Ecuador. The aim of this study was to update a review published in 2016 by including the studies that were carried out in the period 2016–July 2021 on about 120 Ecuadorian medicinal plants. Relevant data on raw extracts and isolated secondary metabolites were retrieved from different databases, resulting in 104 references. They included phytochemical and pharmacological studies on several non-volatile compounds, as well as the chemical composition of essential oils (EOs). The tested biological activities are also reported. The potential of Ecuadorian plants as sources of products for practical applications in different fields, as well the perspectives of future investigations, are discussed in the last part of the review.

scholarly journals Spruce Bark—A Source of Polyphenolic Compounds: Optimizing the Operating Conditions of Supercritical Carbon Dioxide Extraction

Molecules ◽  
2019 ◽  
Vol 24 (22) ◽  
pp. 4049 ◽  
Author(s):  
Petra Strižincová ◽  
Aleš Ház ◽  
Zuzana Burčová ◽  
Jozef Feranc ◽  
František Kreps ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Total Phenolics ◽  
Extraction Process ◽  
Solvent Mixture ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Bark Extract ◽  
Water Mixture ◽  
Spruce Bark ◽  
Phenolics Content

The present study described the optimization of the extraction process with carbon dioxide in supercritical state for obtaining extractives, especially polyphenols from softwood bark, Norway spruce (Picea abies (L.) Karst.). Using a full 23 factorial design of experiments, the effect of varying the working parameters on the yield of extractives was studied for the following ranges: temperature 40–100 °C, pressure 1050–9000 psi (7.2–62 MPa), and concentration of EtOH/water co-solvent mixture 40–96.6%. In addition, total phenolics content and the antioxidant capacity of the spruce bark extract were determined. The optimum operating conditions for the yield of extractives were identified as 73 °C, 6465 psi (44.5 MPa), and 58% EtOH/water cosolvent concentration for a yield of 8.92%. The optimum conditions for achieving a total phenolics content of 13.89 mg gallic acid equivalent (GAE)/g dry extract were determined as: 45 °C, 1050 psi (7.2 MPa), and 96.6% EtOH/water mixture.

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