Larch needle essential oil (Larix laricina Du Roi, Pinaceae family) is a monoterpene-DOMINANT North-American boreal-conifer needle EO with latent-α-pinene/δ-3-carene-oxidation hazard rail (skin sensitization if oxidized only) and otherwise framework-default-clean profile. B216 Ch.13 p.649–650 cites Mainguy (private communication, 2001): α-pinene 38.5% + δ-3-carene 14.0% + β-pinene 10.2% + bornyl acetate 7.9% + β-phellandrene 4.0% + camphene 3.6% + (+)-limonene 2.7% + β-myrcene 2.5% + δ-cadinene 2.1% + β-caryophyllene 1.4% + terpinolene 1.3%. Hazard signature: T&Y verbatim "Hazards: Skin sensitization if oxidized." Cautions: T&Y verbatim "Old or oxidized oils should be avoided." Our safety advice T&Y verbatim: "Because of its α-pinene and δ-3-carene content we recommend that oxidation of larch needle oil is avoided by storage in a dark, airtight container in a refrigerator. The addition of an antioxidant to preparations containing it is recommended." Regulatory T&Y verbatim: "Essential oils derived from the Pinaceae family, including Pinus and Abies genera, should only be used when the level of peroxides is kept to the lowest practicable level, for example by the addition of antioxidants at the time of production (SCCNFP 2001a; IFRA 2009)." No T&Y dermal cap stated → framework default 5.0% applied with mandatory storage-protocol rail. Adverse skin reactions: B216 verbatim "No information was found for larch needle oil, but autoxidation products of α-pinene and δ-3-carene can cause skin sensitization (see Constituent profiles, Chapter 14)." Reproductive toxicity: B216 verbatim "The low reproductive toxicity of α-pinene and (+)-limonene (see Constituent profiles, Chapter 14) and the structural similarity of monoterpenes such as β-pinene and δ-3-carene suggest that larch needle oil is not hazardous in pregnancy." Acute toxicity: B216 verbatim "No information found". Carcinogenic potential: B216 verbatim "no known carcinogens". α-Pinene + δ-3-carene latent-oxidation-class rail (T&Y EXPLICIT): ~52.5% combined α-pinene 38.5% + δ-3-carene 14% — both prone to autoxidation forming hydroperoxides which are skin sensitizers; MANDATORY storage-protocol rail (T&Y verbatim): dark airtight container + REFRIGERATOR + antioxidant addition at production. Pinaceae-family-class-wide-rail (B216 EXPLICIT verbatim): SCCNFP 2001a + IFRA 2009 regulate ALL Pinaceae oils (Pinus + Abies + Larix + Cedrus + Picea + Tsuga genera) for peroxide control; class-wide regulatory rail. Pinaceae-genus-disambiguation rail: Larix laricina (American larch / hackmatack — eastern North America boreal) ≠ Larix decidua (European larch — central Europe Alps) ≠ Larix kaempferi (Japanese larch) ≠ Larix sibirica (Siberian larch); Larix is the deciduous-conifer genus (sheds needles in autumn unlike most conifers — unique among Pinaceae). Latent-oxidation-only-hazard peer rail: Class-shared with [[hemp]] (EO739 21a β-myrcene latent-oxidation) + [[kanuka]] (EO749 22b α-pinene 55.5% latent-oxidation T&Y verbatim refrigerated-storage MANDATORY) + most Pinus/Abies/Cedrus/Picea/Tsuga conifer-needle EOs + [[fir-douglas]] (EO719 17c) + [[fir-cones-silver]] (EO720 17c Templin) + [[fir-needle-canadian]] (EO721 18a) + [[fir-needle-himalayan]] (EO722 18a) + [[fir-needle-japanese]] (EO723 18a) + [[fir-needle-siberian]] (EO724 18b) + [[fir-needle-silver]] (EO725 18b); larch-needle is the deciduous-conifer-Pinaceae peer to evergreen fir/spruce/pine with similar α-pinene-rich + δ-3-carene-co-dominant latent-oxidation rail. Closes Mini-Batch 23b heterogeneity-progression (lantana clean → lanyana thujone-hard-cap pregnancy-contraindicated → larch-needle latent-α-pinene-oxidation-only) — three families × three plant parts × three hazard signatures (clean / hard cap / oxidation-only).
Tổng Quan
- Danh pháp khoa học
- Larix laricina Du Roi
- Họ thực vật
- Pinaceae
- Bộ phận dùng
- Needles
- Phương pháp chiết xuất
- steam_distillation
- Màu sắc
- —
- Phân loại nốt hương
- Nốt Top
- Hương thơm
- —
- Chemotype / Cultivar
- —
Các quốc gia sản xuất chính
Tình trạng tại Việt Nam
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Crisp boreal frost piercing through tamarack needles, sharp-edged resin bite with wild alpine clarity, clean and crystalline mountain air, faintly sweet bornyl warmth glowing beneath the cold
Sương giá boreal sắc lạnh cắt qua rừng lá kim, nhựa thông sắc bén trong trẻo như tiếng cành gãy, không khí núi cao trong vắt như pha lê, thoảng ấm ngọt nhẹ của bornyl ẩn sâu dưới lớp băng giá
2–4 giờ
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Pha Chế & Hòa Hợp
α-Pinene (38.5%) and β-pinene (10.2%) are classical monoterpene expectorants that stimulate mucus secretion and ciliary clearance in bronchial passages when inhaled.
Ref: class-extrapolation from fir-needle-siberian (EO724) and fir-needle-canadian (EO721) Pinaceae peers; Tisserand & Young 2014, Ch.13 p.649–650
High monoterpene hydrocarbon content (α-pinene 38.5%, δ-3-carene 14%, β-pinene 10.2%) confers vapour-phase antimicrobial activity when diffused, a class property of Pinaceae needle EOs.
Ref: class-extrapolation from fir-needle-siberian (EO724) and fir-needle-canadian (EO721); Tisserand & Young 2014, Ch.13 p.649–650
α-Pinene inhibits pro-inflammatory mediator pathways; δ-3-carene (14%) may contribute additional anti-inflammatory activity as codominant constituent in the same monoterpene hydrocarbon class.
Ref: class-extrapolation from fir-douglas (EO719) and Pinaceae needle EO peer-group; Tisserand & Young 2014, Ch.14 constituent profiles
Bornyl acetate (7.9%), a class-marker ester in Pinaceae needle EOs, produces mild counter-irritant warmth and is traditionally used in analgesic muscle-rub preparations.
Ref: class-extrapolation from fir-needle-siberian (EO724) bornyl-acetate marker class; Tisserand & Young 2014, Ch.13 p.649–650
Crisp α-pinene-dominant boreal conifer scent is associated with cognitive clarity and restorative aromatic responses; parallels traditional Ojibwe/Algonquin/Cree PLANT use of needles for respiratory and restorative purposes.
Ref: Tisserand & Young 2014, Ch.13 p.649–650; traditional First Nations PLANT use (needles/bark) — class-extrapolation to EO aromatic properties
AI-summary
Traditional aromatherapy use; no RCT-grade clinical evidence located for Larix laricina needle EO specifically. Tisserand & Young (2014, Ch.13 p.649–650) provide a safety-focused monograph based on Mainguy's (2001) chemistry analysis. Constituent-level regulatory evidence (α-pinene, δ-3-carene autoxidation) is supported by SCCNFP (2001a) and IFRA (2009) Pinaceae class-wide peroxide-control assessments. Expectorant and anti-inflammatory properties attributed to α-pinene-dominant Pinaceae needle EOs are class-level inferences from peer oils (fir-needle, pine-needle) for which some controlled studies exist, but no Larix laricina-specific controlled trials were identified in the available source set.
NarrativeTâm trạng: Stimulating, Uplifting
Chakra
root
Ngũ hành
kim
| Phương pháp | Liều lượng | Ghi chú |
|---|---|---|
| Diffusion | 3–5 drops per 100 ml water; 30-min sessions | Primary route. Delivers respiratory and antimicrobial benefits without dermal contact. Fresh oil only; discard if odour or colour shifts. Avoid continuous use near asthma sufferers. |
| Steam inhalation | 2–3 drops in bowl of hot (not boiling) water; 5–10 min | Effective for upper respiratory congestion. Cover head with towel. Do not use with young children. Fresh oil only — do not use oxidised oil via this route. |
| Topical massage | 1–3% in carrier oil (max 5% adult ceiling per T&Y) | Blend in fractionated coconut or sweet almond. Apply to chest/back (respiratory) or muscles (analgesic). Verify freshness ≤12 months opened. Patch test required; oxidation sensitization risk. |
| Bath | 3–5 drops dispersed in 15 ml full-cream milk before adding to water | Disperse thoroughly; do not add neat to bath water. Not recommended for sensitive skin. Avoid if oil exceeds 12-month opened shelf life. |
| Compress (warm) | 2–3 drops in 500 ml warm water; soak cloth and apply | Apply to chest or sore muscles for 10–15 min. Verify oil freshness. Remove immediately if redness or irritation develops. |
Dầu nền phù hợp
Kết hợp tốt với
Blend kinh điển
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