Raw Material Introduction｜Birch sweet

▎Essential Oil Introduction

Birch Sweet (Betula lenta), also known as "birch wood," is sometimes referred to as "black birch," "cherry birch," "mahogany birch," or "spice birch." Compared to other birch species, it is a smaller tree with bright green leaves and aromatic dark reddish-brown bark. It has a sweet, woody fragrance similar to wintergreen, and its main chemical component, methyl salicylate, is one of the primary ingredients in aspirin.

Birch Sweet essential oil is steam-distilled from the tree’s bark, which must be soaked and softened for up to 12 hours before distillation. The oil has a sweet, sharp, minty, fresh, camphorous aroma. The highest quality Birch Sweet oil is currently produced in the United States.

▎Component Analysis

｜Main component: Esters

Over 60 compounds have been identified in the natural Birch Sweet essential oil obtained through steam distillation. The oil is primarily composed of methyl salicylate (93.24-99.84%), with secondary components such as o-guaiacol, resveratrol, 2-E-4-Z-decadienal, and 2-E-4-E-decadienal recognized as the natural fundamental compounds of authentic Birch Sweet oil.

｜Research Validation

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｜Raw Material Certifications

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▎References

1. Dosoky NS, et al. Authentication and Market Survey of Sweet Birch (Betula lenta L.) Essential Oil. Plants (Basel). 2022. Aug 16;11(16):2132.
2. 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.
3. Yeoh SC, et al. Topical delivery of salicylates. Drug Deliv Transl Res. 2022. May;12(5):981-1001.
4. 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.
5. 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.
6. 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.
7. 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.
8. Ignace DD. Determinants of temperature sensitivity of soil respiration with the decline of a foundation species. PLoS One. 2019. Oct 17;14(10):e0223566.
9. Gewirtzman J, et al. Soil Warming Accelerates Biogeochemical Silica Cycling in a Temperate Forest. Front Plant Sci. 2019. Sep 11;10:1097.
10. Boyd A, et al. Herbal medicinal products or preparations for neuropathic pain. Cochrane Database Syst Rev. 2019. Apr 2;4(4):CD010528.
11. 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.
12. 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.
13. 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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