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Characterization of the odorous constituents and chemical structure of thermally modified rubberwood

文献类型： 外文期刊

作者： Li, Tongtong 1 ; Li, Guanjun 1 ; Li, Jianing 1 ; Li, Xiaowen 1 ; Li, Min 1 ; Li, Yachao 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Rubber Subctr Natl Ctr Important Trop Crops Engn &, Haikou, Peoples R China

2.Chinese Acad Trop Agr Sci, Rubber Res Inst, Rubber Subctr Natl Ctr Important Trop Crops Engn &, Haikou 570100, Hainan, Peoples R China

关键词： Gas chromatography-mass spectrometry/olfactometry; odorants; chemical structure; relative odor activity value

期刊名称：WOOD MATERIAL SCIENCE & ENGINEERING （ 影响因子：2.2； 五年影响因子：2.3 ）

ISSN： 1748-0272

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Rubberwood is a sustainable timber from tropical plantations, and is widely used in human's daily routine like furniture and interior decoration. The thermal modification technology can effectively make rubberwood preservative, and improve its dimensional stability, while the odorants emitted from thermally modified rubberwood limited its application and recently has attracted people's attention. In this study, the effects of thermal modification on odor and key odorous constituents of rubberwood were studied. The volatile odorants were identified by sensory evaluation via gas chromatography-mass spectrometry/olfactometry. To gain profound insights into the contribution of single odorants to the overall odor of heat-treated rubberwood, the odor-active constituents were calculated using relative odor activity values (ROAV) on the basis of odor thresholds. It's revealed that with increasing temperature, the ROAV of 5-methyl-2-furancarboxaldehyde increased from 0.01 to 2.6 and then decreased to 0.7, and 5-methyl-2-furancarboxaldehyde became the important odorant of thermally modified rubberwood ranged from 155 & DEG;C to 185 & DEG;C. The odor of 5-methyl-2-furancarboxaldehyde smelled like chocolate and burnt. The identification of odorants from thermally modified rubberwood could provide theoretical guidelines for further controlling the production technology to produce the low odor thermally modified rubberwood.

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