Activities of some enzymes of lignin formation in reaction wood of Thuja orientalis and Metasequoia glyptostroboides 2

1982 ◽  
Vol 16 (4) ◽  
pp. 287-291 ◽  
Author(s):  
H. Kutsuki ◽  
T. Higuchi
Keyword(s):  
Reaction Wood ◽  
Metasequoia Glyptostroboides ◽  
Thuja Orientalis

scholarly journals Antioxidant Capacity and Tentative Identification of Polyphenolic Compounds of Cones of Selected Coniferous Species

2020 ◽  
Vol 16 (2) ◽  
pp. 79-94
Author(s):  
Tamás Hofmann ◽  
Eszter Visi-Rajczi ◽  
Balázs Bocz ◽  
Dániel Bocz ◽  
Levente Albert
Keyword(s):  
Picea Abies ◽  
Cryptomeria Japonica ◽  
Scientific Literature ◽  
Tsuga Canadensis ◽  
Metasequoia Glyptostroboides ◽  
Antioxidant Power ◽  
Coniferous Species ◽  
Antioxidant Content ◽  
Chamaecyparis Lawsoniana ◽  
Thuja Orientalis

The cones of coniferous species are a waste biomass byproduct that can be potentially utilized for a variety of purposes. One of the many application fields is the extraction of bioactive materials, particularly antioxidant polyphenols. Scientific literature on the antioxidant content of coniferous cones at different ripening stages is limited. In this study, we conducted a comparative analysis of the antioxidant content of selected taxa that are either common in Hungary or that have not yet been investigated in the scientific literature in any great detail (Cedrus atlantica, Larix decidua, Picea abies, Pinus mugo, Pinus nigra, Pinus sylvestris, Pinus wallichiana, Tsuga canadensis, Tsuga heterophylla, Chamaecyparis lawsoniana, Taxodium distichum, Thuja occidentalis, Metasequoia glyptostroboides, Thuja orientalis, Cryptomeria japonica, Cunninghamia lanceolata). A comparison of green, mature and opened cones was performed for the assigned taxa. Folin-Ciocâlteu total polyphenol content (TPC), ferric reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays were used to assess the antioxidant contents. Overall antioxidant power was determined by a scoring system that combined the three assay results. In general, best values were found for green cones, followed by mature, and opened cones for each taxon. Tsuga canadensis, Metasequoia glyptostroboides, Chamaecyparis lawsoniana, Cryptomeria japonica, Thuja orientalis and Picea abies all contained high amounts of antioxidants in both green and mature cones and attained the highest scores. High-performance liquid chromatographic/tandem mass spectrometric profiling of the cone polyphenols was also completed for selected samples. Results provide a basis for future bioactivity testing of these samples.

scholarly journals Coniferous Cones as a Forestry Waste Biomass—A Source of Antioxidants

2020 ◽  
Vol 3 (1) ◽  
pp. 82
Author(s):  
Tamás Hofmann ◽  
Levente Albert ◽  
Balázs Bocz ◽  
Dániel Bocz ◽  
Eszter Visi-Rajczi
Keyword(s):  
Picea Abies ◽  
Cryptomeria Japonica ◽  
Tsuga Canadensis ◽  
Total Phenol Content ◽  
Waste Biomass ◽  
Metasequoia Glyptostroboides ◽  
Antioxidant Power ◽  
Chamaecyparis Lawsoniana ◽  
Tandem Mass Spectrometric ◽  
Thuja Orientalis

The cones of conifers are a waste biomass, potentially be utilized for a variety of purposes, including the extraction of bioactive materials, particularly antioxidant polyphenols. In the present work we conducted a comparative analysis of the antioxidant content of selected taxa that are either common in Hungary or that have not yet been investigated in any great detail (Cedrus atlantica, Larix decidua, Picea abies, Pinus mugo, Pinus nigra, Pinus sylvestris, Pinus wallichiana, Tsuga Canadensis, Tsuga heterophylla, Pseudotsuga menziesii, Chamaecyparis lawsoniana, Taxodium distichum, Thuja occidentalis, Metasequoia glyptostroboides, Thuja orientalis, Cryptomeria Japonica, Cunninghamia lanceolata). A comparison of different maturation stages (green, mature, and opened cones) was carried out for the assigned taxa. Folin-Ciocâlteu total phenol content, ferric reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays were used to assess the antioxidant contents. Total antioxidant power was determined by a scoring system that combined the three assay results. For each taxon the overall best results were found for green cones, followed by mature, and opened cones. Taxa with the highest scores were Tsuga Canadensis, Metasequoia glyptostroboides, Chamaecyparis lawsoniana, Cryptomeria Japonica, Thuja orientalis and Picea abies. High-performance liquid chromatographic/tandem mass spectrometric profiling of the polyphenols was completed for selected samples. Results provide a basis for future bioactivity testing of these samples. The research was supported by the ÚNKP-20-5-12 New National Excellence Program of the Ministry for Innovation and Technology from the source of the National Research, Development and Innovation Fund and by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences.

Use of Ornamental Trees in Dating of Abandoned Cemeteries on the Example of Thuja Occidentalis and Thuja Orientalis

2012 ◽  
Vol 1 (1) ◽  
pp. 45-50
Author(s):  
Magdalena Opała ◽  
Leszek Majgier
Keyword(s):  
Climatic Conditions ◽  
The Other ◽  
Lake District ◽  
Thuja Occidentalis ◽  
North Eastern ◽  
The 1960S ◽  
Thuja Orientalis ◽  
Ornamental Trees ◽  
Common Tree ◽  
Local Habitat

Abstract Due to the lack of maintenance, abandoned cemeteries are often incorporated into the landscape. In many cases the information about the age of the cemetery is unavailable. To find out the approximate time of the formation of the cemetery the information recorded in the annual tree and shrub rings can be used. One of the most common tree species, planted for ornamental and symbolic purposes on the cemeteries, are Thuja orientalis and Thuja occidentalis. Alien to the Polish flora, these species adapted well to the local habitat and climatic conditions. The paper presents an attempt to apply dendrochronological dating to determine the age of the abandoned cemeteries in the region of the Great Masurian Lakes, part of the Masurian Lake District (north-eastern Poland). The study included five abandoned cemeteries. In total, 15 cores were taken from the trees. After applying the standard dendrochronological method, local chronologies for the studied species were established. The research indicated that the oldest found specimens - over 70 yrs old - are Thuja occidentalis individuals growing at the Słabowo cemetery. At the other sites the specimens of both Thuja species date back to the 1960s and early 1970s. Compared to the historical information regarding the age and origin of the studied objects, thujas growing there are much younger than the age of the cemeteries foundation. The presented method proved to be very helpful in understanding the time of Thuja occidentalis and Thuja orientalis introduction at the investigated cemeteries.

Localized Irrigation System for Thuja Orientalis in Intensive Culture

2018 ◽  
Vol 20 (1) ◽  
pp. 119-126
Author(s):  
Mădălina Stănescu ◽  
Constantin Buta ◽  
Geanina Mihai ◽  
Lucica Roșu
Keyword(s):  
Irrigation System ◽  
Ornamental Plants ◽  
Point Of View ◽  
First Year ◽  
Intensive Culture ◽  
Technical Point ◽  
Production Factors ◽  
Thuja Orientalis ◽  
Agricultural Farm

Abstract In order to increase the competitiveness of an agricultural holding through the efficient use of the production factors, the modernization of an agricultural farm was carried out by exending the existing greenhouse with at least 700m2 for the intensive cultivation of ornamental plants - Thuja Orientalis. The material is produced by initiating crops in pots, with seedlings grown in pots or transplanting them in pots right after the first year of the multiplication and growing them in containers, appropriate to their size, until reaching their full value. From a technical point of view, reaching the objective will also be possible through a localized irrigation system.

Identification and fungi toxicity of volatiles in Metasequoia glyptostroboides seeds

2010 ◽  
Vol 18 (5) ◽  
pp. 1018-1021
Author(s):  
Jun-Jie YANG ◽  
Li-Jun CHEN ◽  
Hai-Xia YANG ◽  
Qing-Feng SHI
Keyword(s):  
Metasequoia Glyptostroboides
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