نتایج جستجو برای: τ cadinol

تعداد نتایج: 11998  

Journal: :Natural Product Communications 2008

Journal: :Natural product communications 2010
Chen-Lung Ho Eugene I-Chen Wang Yen-Hsueh Tseng Pei-Chun Liao Chien-Nan Lin Ju-Ching Chou Yu-Chang Su

The hydrodistilled essential oils of the leaves and twigs of Litsea mushaensis and L. linii were analyzed. Sixty-nine and ninety compounds were identified in the leaf and twig oils, respectively, of L. mushaensis. The main components of the leaf oil were beta-eudesmol (24.2%), tau-cadinol (10.2%), alpha-humulene (10.1%), alpha-pinene (9.7%), and trans-beta-ocimene (6.5%), whereas the main compo...

Journal: :Bioresources and Bioprocessing 2022

Abstract ?-Cadinol is a sesquiterpene that widely used in perfume, fine chemicals and medicines industry. In this study, we established biosynthetic pathway for the first time engineered Escherichia coli production of ?-cadinol from simple carbon sources. Subsequently, further improved to 35.9 ± 4.3 mg/L by optimizing overproduction rate-limiting enzyme IdI. Finally, titer was increased 133.5 1...

The chemical constituents of leaves, inflorescence, and flowers from Ocimum basilicum (Thai basil) and Ocimum sanctum (Holy basil) were analysed by gas chromatography-mass spectrometry. The chemical compounds were extracted by hydrodistillation, headspace-solid phase microextraction, and solvent extraction.  The main constituents of Ocimum basilicum were identified to consist of estragole (...

2005
Chi-Lin Wu Shih-Chang Chien Sheng-Yang Wang Yueh-Hsiung Kuo Shang-Tzen Chang

Cadinane-type sesquiterpenes have a wide spectrum of biological activity, but their use as wood preservatives and the structure-activity relationships of their derivatives have not yet been reported. A total of 13 compounds were synthesized from T-cadinol, T-muurolol, and a-cadinol and their chemical structures were confirmed by IR, MS, and 1H and 13C NMR. The antifungal properties of 16 compou...

2015
Mona E. El-Tantawy Manal M Shams

Investigation of the chemical composition of the essential oils from subterranean organs (S) of Nephrolepis cordifolia (NC) and Nephrolepis exaltata (NE) (F. Lomariopsidaceae) grown in Egypt was carried out. Gas Chromatography/mass Spectrometry (GC/MS) analysis of the hydro-distilled NCS and NES oils revealed that oxygenated compounds were abundant, being 55.35% and 33.85%, respectively. Ethyl ...

Journal: :Bioresource technology 2008
Hui-Ting Chang Ying-Hung Cheng Chi-Lin Wu Shang-Tzen Chang Tun-Tschu Chang Yu-Chang Su

Resistance to conventional fungicides causes the poor disease control of agriculture. Natural products from plants have great potential as novel fungicide sources for controlling pathogenic fungi. In this study antipathogenic activity of the leaf essential oil and its constituents from Calocedrus macrolepis var. formosana Florin were evaluated in vitro against six plant pathogenic fungi. Chemic...

2017
Hui-Yeng Yeannie Yap Mariano Jordi Muria-Gonzalez Boon-Hong Kong Keith A Stubbs Chon-Seng Tan Szu-Ting Ng Nget-Hong Tan Peter S Solomon Shin-Yee Fung Yit-Heng Chooi

BACKGROUND Genome mining facilitated by heterologous systems is an emerging approach to access the chemical diversity encoded in basidiomycete genomes. In this study, three sesquiterpene synthase genes, GME3634, GME3638, and GME9210, which were highly expressed in the sclerotium of the medicinal mushroom Lignosus rhinocerotis, were cloned and heterologously expressed in a yeast system. RESULT...

2011
Chen-Lung Ho Pei-Chun Liao Yu-Chang Su

This study investigated the chemical composition, and antimicrobial and anti-wood-decay fungal activities of the essential oil isolated from the leaf of endemic Machilus zuihoensis Hayata, Lauraceae, of Taiwan. The essential oil from the fresh leaves of M. zuihoensis was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. A total of 104 compoun...

2017
Nasser A Awadh Ali Bhuwan K Chhetri Noura S Dosoky Khola Shari Ahmed J A Al-Fahad Ludger Wessjohann William N Setzer

Background:Ocimum forskolei and Teucrium yemense (Lamiaceae) are used in traditional medicine in Yemen. Methods: The chemical composition, antimicrobial, antioxidant and cytotoxic activities of the essential oils isolated from the leaves of Ocimum forskolei Benth. (EOOF) and two different populations of Teucrium yemense Deflers., one collected from Dhamar province (EOTY-d), and another collecte...

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