甜樺樹 Birch sweet
拉丁學名｜Betula lenta
主要產地｜美國
原料分類｜木質系列
原料規格｜500g-25kg 詳情請洽業務
萃取部位｜木質
萃取方式｜蒸餾
植物科別｜樺木科
植物氣味｜似白株樹藥草般甜而清涼的氣味
▎精油簡介
甜樺樹（Betula lenta）又稱「樺木」，也稱為「黑樺樹」、「櫻桃樺樹」、「桃花心木樺樹」或「香料樺樹」，相較其他樺木，是較為矮小的樹種，有明亮的綠葉與深紅棕色的芳香樹皮。具甜美的木質香氣，類似白珠樹的味道，主要化學成分含有水楊酸甲酯，是阿司匹靈的主要成分之一。
甜樺木精油是從該樹木的樹皮中蒸汽蒸餾而來，在蒸餾前必須將樹皮浸軟、浸濕至12個小時，這種精油具有香甜的、刺鼻的、薄荷的、新鮮的、樟腦香氣。目前樺木精油品質較好的產區為美國。
▎成分解析
｜主要成分：酯類
透過水蒸餾獲得的天然甜樺木精油中鑑定出60 多種化合物。油主要是水楊酸甲酯(93.24-99.84%)，次要成分o-癒創木酚、藜蘆醇、2- E -4- Z -癸二醛和2- E -4- E -癸二醛被確定為正宗甜樺木油的天然基本化合物。
｜研究認證
▸ 複方水楊酸甲酯由多種成分組成，如水楊酸甲酯、薄荷醇、樟腦、氯菲安敏、百里酚等，在臨床使用中是可信賴的。
▸ 含有水楊酸甲酯和L-薄荷醇的局部鎮痛劑可加速運動引起的體溫過高的皮膚冷卻過程中的熱量損失。
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▎參考文獻
- Dosoky NS, et al. Authentication and Market Survey of Sweet Birch (Betula lenta L.) Essential Oil. Plants (Basel). 2022. Aug 16;11(16):2132.
- Guo J, et al. Safety and efficacy of compound methyl salicylate liniment for topical pain: A multicenter real-world study in China. Front Pharmacol. 2022. Oct 21;13:1015941.
- Yeoh SC, et al. Topical delivery of salicylates. Drug Deliv Transl Res. 2022. May;12(5):981-1001.
- Singewar K, et al. Transcriptome analysis of North American sweet birch (Betula lenta) revealed a higher expression of genes involved in the biosynthesis of secondary metabolites than European silver birch (B. Plant pendula). J. J Plant.201. 134(6):1253-1264.
- Liu H, et al. Nondestructive Sampling for Spotted Lanternfly (Hemiptera: Fulgoridae) Egg Masses in Woodlands Based on Fixed-Radius Plots. J Econ Entomol. 2021. Jun 11;114(3):1353-1361.
- Wheeler KI, et al. Visible and near-infrared hyperspectral indices explain more variation in lower-crown leaf nitrogen concentrations in autumn than in summer. Oecologia. 2020. Jan;192(1):13-27.
- Singewar K, et al. Identification and analysis of key genes involved in methyl salicylate biosynthesis in different birch species. PLoS One. 2020. Oct 8;15(10):e0240246.
- Ignace DD. Determinants of temperature sensitivity of soil respiration with the decline of a foundation species. PLoS One. 2019. Oct 17;14(10):e0223566.
- Gewirtzman J, et al. Soil Warming Accelerates Biogeochemical Silica Cycling in a Temperate Forest. Front Plant Sci. 2019. Sep 11;10:1097.
- Boyd A, et al. Herbal medicinal products or preparations for neuropathic pain. Cochrane Database Syst Rev. 2019. Apr 2;4(4):CD010528.
- Rodgers VL, et al. Warming increases the sensitivity of seedling growth capacity to rainfall in six temperate deciduous tree species. AoB Plants. 2018. Jan 17;10(1):ply003.
- Falxa-Raymond N, et al. Oak loss increases foliar nitrogen, δ(15)N and growth rates of Betula lenta in a northern temperate deciduous forest. Tree Physiol. 2012. Sep;32(9):1092-101.
- Daley MJ, et al. Hydraulic responses to environmental perturbations in Tsuga canadensis and Betula lenta. Tree Physiol. 2008. Sep;28(9):1341-8.
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