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Facile biphasic catalytic process for conversion of monoterpenoids to tricyclic hydrocarbon biofuels

Journal of Energy Chemistry 2020年第10期29卷 42-50页

作者： Shaoqu Xie Trong HHuynh Peiyong Qin Tianwei Tan Hongfei Lin The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State UniversityPullmanWA 99164 National Energy Research and Development Center for Biorefinery Beijing University of Chemical TechnologyBeijing 100029China

Terpenoids have drawn much attention to scientists in synthesizing high-performance bio-jet fuels due to their ring structures,which feature potential high ***,a facile biphasic catalytic process has been developed for the production of high-density tricyclic hydrocarbon biofuels from a monoterpenoid,1,8-cineole,using sulfuric acid(H2SO4)as the homogeneous catalyst.A^100%conversion of 1,8-cineole and a>40%carbon yield of cyclic dimers were achieved at 100℃within two *** mechanism for the acid-catalyzed conversion of 1,8-cineole to cyclic hydrocarbon dimers were *** particular,the formation of the diene intermediates and the following dimerization of dienes was essential to synthesize tricyclic terpene *** biphasic catalytic process accelerated the deoxygenation rate and enabled the dimerization with the aid of organic solvent while controlling the reaction rates to avoid the formation of solid ***,this process also facilitated the product separation by organic solvent extraction while enabling easy recycle of the homogenous catalysts.

关键词： cineole High-density biofuels Biphasic catalytic process Diels-Alder reaction Dehydration

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Enhancement of Essential Oil Yield from Melaleuca Leucadendra *** by Lignocellulose Degradation Pre-Treatment Using Filamentous Fungi

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Journal of Bioresources and Bioproducts 2021年第4期6卷 379-386页

作者： Tjokorda I.Indira Khairul Hadi Burhan Robert Manurung Ana Widiana Department of Bioengineering School of Life Science and TechnologyInstitute of Technology BandungIndonesia Agriculture and Bioproduct Technology Research Group Institute of Technology BandungJl.Raya Jatinangor Km 20.75Sumedang 45363Indonesia Department of Biology Faculty of Sciences and Technology Sunan Gunung Djati UniversityJl.A.H.Nasution No.105Bandung 40614Indonesia

The essential oil from Melaleuca leucadendra *** has been widely used as a perfume and traditional remedy,cosmetics and pharmaceutical products ingredient since many years *** common technology to recover the oil is hydro-distillation and ***,all oil can not be fully extracted from the leaves by this method due to the recalcitrant structure of leaves that hindrance the access of the *** a submerged fermentation as a pretreatment step prior to the extraction process helped to loosen the lignocellulose structure and enhance oil release in the extraction *** this study,the raw materials were collected from the natural forest in Buru Island,Maluku,*** biological agents applied in these processes were Phanerochaete chrysosporium ITBCC136 and Trichoderma viride *** oil extraction process was conducted by method of steam-distillation,the oil was analysed using gas chromatography-mass spectroscopy(GC-MS),and the lignocellulose content in the biomass was measured by the fractionation *** treatment using *** provided the highest increase in yield percentage up to 3.47%as compared with control of 1.45%,with the lowest percentages of the remained cellulose,while the fermentation with the presence of *** did not affect the oil yield even the lignin content was decrease as much as 21%.The percentages of 1,8-cineole in the oil were almost unchanged,which was about 20%of the oil.

关键词： Cajuput oil cineole Filamentous fungi Lignocellulose biodegradation Phanerochaete chrysosporium Trichoderma viride

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Chemometric Resolution for Baseline Identification of <i>Amomum subulatum</i>Roxb. Essential Oils through FT-IR Spectroscopy Technique

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International Journal of Organic Chemistry 2017年第4期7卷 319-324页

作者： Arvind K. Bhandari Mamta Baunthiyal Vinod K. Bisht Jagdiesh C. Kaim Bir S. Negi Herbal Research and Development Institute Gopeshwar India Department of Biotechnology G.B. Pant Engineering College Pauri-Garhwal India Department of Horticulture Government of Uttarakhand Circuit House Dehradun India

Essential oil of Amomum subulatum is the complex mixture of various alkyl, alkanes, sulfonates, amines, alcohols, sulfoxides, trans RCH≡CHR and aromatic bending compounds. The FT-IR analysis of aromatic bending occurs on 845 cm-1 with para C-H bend. A strong absorption band between 900 cm-1 - 675 cm-1 indicated the presence of aromatic C=C. The alcoholic stretching detected on 1080 cm-1 and 1169 cm-1 with C-O stretching molecular motion in large cardamom. In our investigation, the frequency of 2943 cm-1 and 2934 cm-1 the C-H stretching occurred in alkyl group. The wave numbers of bands 2966 (C=CH2), 1358 (S=O Stretch), 1215 (C-N Stretch), 1053 (S=O Stretch) and 984 (C-H Bending) the functional group specify vinyl, sulfonates, amines, sulfoxides and trans RCH-CHR, respectively.

关键词： Essential Oil 1 8 cineole FTIR Spectra

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