Plate 371. Cryptomeria japonica

Farjon, Aljos

doi:10.1111/1467-8748.00220

Cited by 6 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FCs are brown (when mature), globular, up to 1-2 cm (0.39-0.79 in) in diameter, and composed of about 20-40 megasporophylls [3]. The MCs are numerous, ovoid or oblong, yellow or bright brown (when mature), arranged spirally, 2-3 mm long, and elongate up to 10 mm when ripe to shed pollen [4]. The pollen of C. japonica causes pollinosis, or hay fever, which is a serious health problem in Japan.…”

Section: Introductionmentioning

confidence: 99%

Essential Oils from Different Parts of Azorean Cryptomeria japonica (Thunb. ex L.f.) D. Don (Cupressaceae): Comparison of the Yields, Chemical Compositions, and Biological Properties

et al. 2023

View full text Add to dashboard Cite

Azorean Cryptomeria japonica is widely used for local wood production, generating large amounts of aerial-part biomass residues that can be a sustainable source of value-added bioproducts. This comparative study aimed (i) to determine the yield and chemical profile of the essential oils (EOs) extracted by hydrodistillation from Azorean C. japonica foliage, leaves, male cones (MCs), and female cones (FCs), and (ii) to investigate the antimicrobial and brine shrimp lethality (BSL) effects of the obtained EOs and some major components. The EOs yield revealed a wide range (ca. 1–3%, w/d.w.) and their chemical composition, analysed by GC–MS and GC–FID, showed the presence of seventy-one components. Monoterpene hydrocarbons (38–71%) dominated in all the studied EOs, mainly α-pinene (17–45% of total EOs), decreasing as follows: cone EOs > leaf EOs > foliage EOs. Oxygen-containing monoterpenes (mainly terpinen-4-ol) also dominated in cone EOs. Contrariwise, oxygen-containing sesquiterpenes (mainly elemol) and diterpene hydrocarbons (mainly phyllocladene) dominated in foliage/leaf EOs. The studied EOs exhibited activity against Gram-positive bacteria but no activity against Gram-negative bacteria. A similar trend was displayed by α-pinene. Only the cone EOs showed antifungal activity against Penicillium chrysogenum, but this was significantly lower than those of α-pinene and terpinen-4-ol. Moreover, FC EO should also be considered for further investigation due to its high toxicity on BSL bioassay. In conclusion, this study demonstrated the variability of yield, chemical profile, and bioactivities in the EOs from different parts of the Azorean C. japonica, expanding the knowledge of the potentialities of C. japonica aerial-part EOs, particularly the ones from the cone samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Essential Oils from Different Parts of Azorean Cryptomeria japonica (Thunb. ex L.f.) D. Don (Cupressaceae): Comparison of the Yields, Chemical Compositions, and Biological Properties

et al. 2023

View full text Add to dashboard Cite

show abstract

“…At the time of pollination, spanning from February to April, IFC possess a flat top, becoming almost globular within one month. In turn, mature FC (MFC) have a tapering apex and a 1-2 cm diameter (Figure 1C), containing 20-30 megasporophylls arranged in a spiral shape [10][11][12]. The remarkably increasing market value of EOs could bring about new opportunities for the sustainable management of unused forestry waste, such as that from C. japonica.…”

Section: Introductionmentioning

confidence: 99%

Variations in Essential Oil Biological Activities of Female Cones at Different Developmental Stages from Azorean Cryptomeria japonica (Thunb. ex L.f.) D. Don (Cupressaceae)

Janeiro,

Lima,

Arruda

et al. 2024

Separations

View full text Add to dashboard Cite

In the Azores Archipelago, Cryptomeria japonica is, currently, the most cultivated forestry tree for timber production, landscaping, and gardening, generating large amounts of foliage waste that is used for local essential oils (EOs) production. However, the existing literature on the biological potential of EOs from different C. japonica foliage parts, such as female cones (FC), remains limited. Thus, in the present study, EOs extracted by hydrodistillation from Azorean C. japonica immature and mature FC (IFC and MFC), as well as some major EO components, were screened for their: (i) antioxidant capacity, evaluated by DPPH free-radical-scavenging activity (FRSA) and β-carotene-linoleic acid bleaching activity (BCBA), (ii) antimicrobial activities, assessed by the disc diffusion method against eight bacteria and one fungus, and (iii) toxicity against Artemia salina. Among both FC EO samples, the IFC EO exhibited the best DPPH–FRSA, BCBA, and growth inhibitory activity against Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis, and Penicillium italicum, as well as a slightly increased toxic potential, due to their differential compositions, as assessed by GC–MS analysis. Thus, the FC’s maturation process decreased their EOs’ bioactivities. In conclusion, this finding could help in determining the optimal developmental stage for enhancing the antioxidant and antimicrobial compounds content in FC EOs. In turn, this contributes to increasing the commercial potential of C. japonica’s EO industry.

show abstract

Zonal Vegetation of the Subtropical (Warm–Temperate) Zone with Year-Round Rain

Pfadenhauer

Klötzli²

2020

Global Vegetation

View full text Add to dashboard Cite

Plate 371. Cryptomeria japonica

Abstract: The history, distribution, taxonomy, habitat and cultivation requirements of Cryptomeria japonica (Thunb. ex L.f.) D. Don (Cupressaceae), which is considered endemic to Japan, are discussed; a full description with illustrations of the species is provided.

Cited by 6 publications

References 10 publications

Essential Oils from Different Parts of Azorean Cryptomeria japonica (Thunb. ex L.f.) D. Don (Cupressaceae): Comparison of the Yields, Chemical Compositions, and Biological Properties

Essential Oils from Different Parts of Azorean Cryptomeria japonica (Thunb. ex L.f.) D. Don (Cupressaceae): Comparison of the Yields, Chemical Compositions, and Biological Properties

Variations in Essential Oil Biological Activities of Female Cones at Different Developmental Stages from Azorean Cryptomeria japonica (Thunb. ex L.f.) D. Don (Cupressaceae)

Zonal Vegetation of the Subtropical (Warm–Temperate) Zone with Year-Round Rain

Contact Info

Product

Resources

About