Chemical Compositions and In Vitro Antiphytopathogenic Fungi Activities of the Leaf and Cones Essential Oils of <i>Cunninghamia lanceolata</i> From Taiwan

Hsu, Kuang-Ping; Su, Yu-Chang; Ho, Chyi-Chen

doi:10.1177/1934578x20936971

Cited by 4 publications

(7 citation statements)

References 23 publications

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“…The values are expressed as mean ± standard deviation (SD). c MIC is expressed in micrograms per milliliter. d MBC is expressed in micrograms per milliliter. e Both α-pinene and limonene were purchased from Sigma-Aldrich, whereas ferruginol was isolated in the laboratory. 26 f Positive control: chloramphenicol (30 μg/disk).…”

Section: Resultsmentioning

confidence: 99%

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Chemical Composition and In Vitro Antimicrobial, Antioxidant, and Tyrosinase-Inhibiting Activity of Essential Oils Extracted From the Leaves and Twigs of Calocedrus macrolepis var. formosana

Shyu,

Hsu,

Yang

et al. 2023

Natural Product Communications

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In this study, we focused on evaluating the antimicrobial, antioxidant, and tyrosinase-inhibiting properties of leaf and twig essential oils from Calocedrus macrolepis var. formosana. Additionally, we determined the major components associated with these effects. The findings revealed that α-pinene (36.4%) and limonene (23.6%) were the dominant components in the leaf essential oil, while α-pinene (36.2%), ferruginol (22.5%), and limonene (13.1%) were the major constituents in the twig essential oil. However, when comparing the biological activities of the 2 essential oils, the twig essential oil demonstrated excellent inhibitory effects against skin pathogens, as well as strong antioxidant and tyrosinase-inhibiting activities, in contrast to the leaf essential oil. The twig essential oil also exhibited excellent antimicrobial activity against 5 skin pathogenic strains, with the strongest inhibitory effect being that against Staphylococcus aureus, S epidermidis, and Candida albicans, which was accompanied by an inhibition zone of 46 to 48 mm, a minimum inhibitory concentration (MIC) of 125 μg/mL, and a minimum bactericidal concentration (MBC) of 250 μg/mL. The inhibitory activity of the twig essential oil against lipid peroxidation was found to be potent, as evidenced by an IC50 value of 216 ± 1.9 μg/mL. It also exhibited strong scavenging activity against free radicals, including 2,2-diphenyl-1-picrylhydrazyl (DPPH) (IC50 = 121.6 ± 0.5 μg/mL) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) (IC50 = 136.8 ± 1.6 μg/mL) cation radicals. In addition, it exhibited a high cupric ion reducing–antioxidant capacity (CUPRAC), with the A0.50 value determined to be 186.28 ± 0.5 μg/mL. It also exhibited adequate activity in terms of inhibiting in vitro tyrosinase activity, as evidenced by an IC50 value of 168.5 ± 0.6 μg/mL. Further analysis revealed that ferruginol was the active component responsible for the antimicrobial, antioxidative, and tyrosinase-inhibiting activities observed in twig oil. These findings suggest that the twig oil is a promising candidate for further research because of its favorable antimicrobial, antioxidative, and tyrosinase-inhibiting activity.

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Section: Resultsmentioning

confidence: 99%

“… e Both α-pinene and limonene were purchased from Sigma-Aldrich, whereas ferruginol was isolated in the laboratory. 26 …”

Section: Resultsmentioning

confidence: 99%

Chemical Composition and In Vitro Antimicrobial, Antioxidant, and Tyrosinase-Inhibiting Activity of Essential Oils Extracted From the Leaves and Twigs of Calocedrus macrolepis var. formosana

Shyu,

Hsu,

Yang

et al. 2023

Natural Product Communications

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“…The structures of 2 compounds were confirmed by comparing 1 H-NMR, 13 C-NMR, and EI-MS spectral data with the our previously literature values. 25…”

Section: Methodsmentioning

confidence: 99%

Chemical Compositions and Anti-Mildew Effects of Cinnamomum micranthum Leaf and Twig Essential Oils on Paper

Hsu

Wei

et al. 2022

Natural Product Communications

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In this study, we evaluated the anti-mildew effects of paper treated with essential oils of leaves, twigs, and their main constituents from Cinnamomum micranthum. The main ingredients with the greater anti-mildew effects on paper capability were also purified and identified. Fresh leaves and twigs of C. micranthum were hydrodistillated in a Clevenger-type apparatus, and the resulting oil characterized using GC-FID and GC-MS instruments. The leaf essential oil consisted principally of n-decanal (50.1%), ( E)-β-ocimene (7.9%), ( E)-nerolidol (6.5%), and ( E)-β-caryophyllene (3.8%), and the twig oil's main components were τ-cadinol (18.3%), ( E)-β-ocimene (16.4%), α-cadinol (13.6%), n-decanal (10.6%), and β-selinene (5.8%). Comparing the mildew resistance of the oils on paper exhibited that twig oil was the best anti-mildew activity; at 200 μg/cm2, the twig oil completely inhibited the growth of Aspergillus clavatus, Cladosporium cladosporioides, Chaetonium globosum, Myrothecium verrucaria, and Penicillium citrinum. The twig oil was further divided into 8 fractions (TO1-TO8). TO4 fraction had moderate anti-mildew effects; at the concentration of 200 μg/cm2, all fungi strains were totally inhibited, except A niger, and Trichoderma viride, which were 83.5%, and 93.2% inhibited, respectively. The main ingredients of TO4 fraction were τ-cadinol, and α-cadinol, so we isolated and used the for anti-mildew effect tests; τ-cadinol, and α-cadinol showed moderate anti-mildew activities. Since C. micranthum twig essential oil, τ-cadinol, and α-cadinol were exhibited a great anti-mildew effects on paper, they are worth further investigations and utilization.

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“…The difference in results may be related to the essential oil composition. Relevant studies [10,50] show that the main components of CFEO differ according to the extraction method and the tree parts used. The main components of the CFEO used in this study were cedarwood and α-cedrene.…”

Section: Antimicrobial Activitymentioning

confidence: 99%

“…Plant essential oils have antibacterial, antimicrobial, anti-insect and antivirus properties and are widely used in fields that include anticorrosion, preservation, medicine, health care and the chemical industry [2,3]. Different types of essential oil have been studied worldwide, including ginger essential oil [4], Angelica essential oil [5], lavender essential oil [6], vetiver essential oil [7], cinnamon essential oil [8] and Chinese fir essential oil [9,10] (CFEO, similar purpose with Tarragon Essential Oil [11,12]), with some results showing that plant essential oils can be used as active substances in packaging materials to prolong food shelf life effectively. Compared with other essential oils, CFEO is derived from wood, which has a pungent woody aroma and lacks fragrance.…”

Section: Introductionmentioning

confidence: 99%

Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries

et al. 2022

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Essential oils are natural antibacterial substances and have potential value for application in fruit and vegetable packaging. In this study, Chinese fir essential oil (CFEO) was microencapsulated to prepare food packaging materials for the first time to overcome its volatilization and oxidation shortcomings and to obtain a sustained-release form of the oil. CFEO was effectively encapsulated in gelatin and chitosan using the complex coacervation method, and the encapsulation efficiency, microstructure, infrared spectrum and thermal stability of the microcapsules were evaluated. Experiments confirmed that the microcapsules had some antibacterial activity. A bioactive paper was developed by combining CFEO microcapsules (CFEO-Ms) with paper-based material using the film-forming property of polyvinyl alcohol (PVA). The coated paper showed good mechanical, air permeability and moisture permeability properties. Environmental scanning electron microscopy confirmed that CFEO-Ms bonded well with PVA and was successfully introduced into the paper fiber after coating, forming an obvious coating film on the surface to facilitate the continuous release of CFEO. The shelf life of strawberries was significantly prolonged when the PVA-coated paper mixed with 3% CFEO-Ms was used for packaging. The results demonstrated that the CFEO-Ms coated paper has the potential to become an effective packaging material for the preservation of strawberries.

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Chemical Compositions and In Vitro Antiphytopathogenic Fungi Activities of the Leaf and Cones Essential Oils of Cunninghamia lanceolata From Taiwan

Cited by 4 publications

References 23 publications

Chemical Composition and In Vitro Antimicrobial, Antioxidant, and Tyrosinase-Inhibiting Activity of Essential Oils Extracted From the Leaves and Twigs of Calocedrus macrolepis var. formosana

Chemical Composition and In Vitro Antimicrobial, Antioxidant, and Tyrosinase-Inhibiting Activity of Essential Oils Extracted From the Leaves and Twigs of Calocedrus macrolepis var. formosana

Chemical Compositions and Anti-Mildew Effects of Cinnamomum micranthum Leaf and Twig Essential Oils on Paper

Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries

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