Katrafay essential oil (Cedrelopsis grevei Baill., Ptaeroxylaceae family) is a sesquiterpene-hydrocarbon-DOMINANT Madagascar bark essential oil with clean T&Y "None known × 2" safety profile and characteristic α-himachalene + cadinane-class signature. B216 Ch.13 p.642–643 cites Behra (private communication, 2003) chemistry: α-himachalene 11.0–15.0% + calamenene 4.0–6.0% + β-caryophyllene 3.0–6.0% + β-elemene 3.0–6.0% + β-pinene 2.0–6.0% + α-copaene 3.0–5.0% + ar-curcumene 3.0–5.0% + γ-cadinene 1.0–5.0% + β-bisabolene 1.0–3.0% + cyclosativene 1.0–3.0% + linalool 1.0–3.0% + δ-3-carene 0.5–2.0% + α-pinene 0.5–2.0%. Hazard signature: T&Y verbatim "Hazards: None known. Contraindications: None known." No T&Y dermal cap stated → framework default 5.0% applied. Adverse skin reactions: B216 verbatim "No information was found for katrafay oil or α-himachalene." Acute toxicity: B216 verbatim "No information was found for katrafay oil or α-himachalene." Carcinogenic potential: B216 verbatim "No information was found for katrafay oil, but it contains no known carcinogens. β-Elemene displays anticarcinogenic activity (see β-Elemene profile, Chapter 14)" — β-elemene anticarcinogenic-constituent-class rail. Ptaeroxylaceae-family-SINGLETON rail (CRITICAL) — Ptaeroxylaceae is a small family endemic to Madagascar + East Africa with very few commercial essential oils; Cedrelopsis grevei is the lead Madagascar bark EO from this family; chemotaxonomically isolated within commercial aromatherapy. Sesquiterpene-hydrocarbon-DOMINANT chemotype rail — α-himachalene (11–15%) + calamenene (4–6%) + β-caryophyllene (3–6%) + β-elemene (3–6%) + α-copaene (3–5%) + ar-curcumene (3–5%) + γ-cadinene (1–5%) + β-bisabolene (1–3%) + cyclosativene (1–3%) = ~25–48% sesquiterpene-hydrocarbon class — heavy structural component characteristic of bark essential oils; class-shared with [[copaiba]] (β-caryophyllene-dominant) + [[gurjun]] (α-gurjunene-extreme-dominant) + [[cabreuva]] (nerolidol-rich Myrocarpus) but with distinct α-himachalene marker. Madagascar-bark-endemic terroir rail — Cedrelopsis grevei is endemic to Madagascar dry forest; Behra-private-communication-2003 chemistry source rail (rare data source — limited public chemistry literature). β-Elemene anticarcinogenic-constituent-class rail (B216 EXPLICIT verbatim) — β-elemene 3–6% in katrafay; same constituent shared with [[myrrh]] + [[curcuma]] elemicin-rich oils — anticarcinogenic activity per T&Y Ch.14 β-Elemene profile (clinical β-elemene injection in Chinese oncology literature; topical EO content NOT therapeutic-equivalent — class-rail only). Limited availability per B216 verbatim "Produced in Madagascar. Limited availability." Opens Mini-Batch 23a clean-trio (katrafay → kesom → kewda) — three radically different families (Ptaeroxylaceae bark / Polygonaceae aerial / Pandanaceae flowers) × three chemotype classes (sesquiterpene-hydrocarbon / aliphatic-aldehyde / phenolic-ether) × three plant parts; all three "None known × 2" T&Y but with distinct chemistry-class divergence pattern.
Tổng Quan
- Danh pháp khoa học
- Cedrelopsis grevei Baill.
- Họ thực vật
- Ptaeroxylaceae
- Bộ phận dùng
- Bark
- Phương pháp chiết xuất
- steam_distillation
- Màu sắc
- —
- Phân loại nốt hương
- Nốt Middle
- Hương thơm
- —
- Chemotype / Cultivar
- —
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Dry warm cedarwood heart, dusty resinous bark, quiet earthy depth, softly spiced ancient timber, tranquil forest silence
Lõi gỗ khô ấm như tuyết tùng cổ thụ, vỏ cây nhựa bụi phấn trầm mặc, chiều sâu đất rừng tĩnh lặng, gỗ cổ thụ thoáng ấm gia vị, hơi thở nguyên sinh Madagascar
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Pha Chế & Hòa Hợp
Sesquiterpene hydrocarbon-dominant profile (α-himachalene 11–15%; combined ~25–50%) is consistent with traditional Malagasy anti-inflammatory use; sesquiterpene hydrocarbons as a class are broadly associated with modulation of inflammatory responses via lipophilic membrane interactions.
Ref: Tisserand & Young 2014, Ch.13 — Katrafay monograph, pp. 642–643
Traditional Madagascar ethnomedicinal use of Cedrelopsis grevei bark preparations for joint and muscle pain; sesquiterpene hydrocarbon class shares this empirical analgesic profile with related bark-derived EOs at comparable constituent densities.
Ref: Tisserand & Young 2014, Ch.13 — Katrafay monograph, pp. 642–643
α-Himachalene skeleton (11–15%) is shared with Himalayan cedarwood EO; himachalene-class sesquiterpene hydrocarbons in cedarwood-family EOs are traditionally employed as antispasmodic agents, supporting class-extrapolated muscle-relaxant use for katrafay.
Ref: class-extrapolation from himalayan cedarwood (shared α-himachalene skeleton; Tisserand & Young 2014, Ch.13)
Woody-bark sesquiterpene hydrocarbons including α-himachalene are lipophilic CNS-accessible molecules associated with calming psycho-emotional effects consistent with the broader cedarwood/wood-type EO aromatic class in traditional aromatherapy.
Ref: class-extrapolation from himalayan cedarwood (α-himachalene shared skeleton; Tisserand & Young 2014, Ch.13)
β-Elemene (3–6%) is an anticarcinogenic-class constituent per Chinese oncology injection literature (T&Y Ch.14); topical EO is explicitly NOT therapeutically equivalent to parenteral routes — constituent-class membership noted only; NO anticarcinogenic claim made for this EO.
Ref: Tisserand & Young 2014, Ch.14 — β-Elemene profile (CAVEAT: injection clinical data only; topical EO not therapeutically equivalent)
AI-summary
Traditional aromatherapy use; no RCT-grade clinical evidence located for katrafay essential oil specifically. The T&Y (2014) monograph (Ch.13 pp.642–643) documents traditional Malagasy ethnomedicinal use of Cedrelopsis grevei bark for anti-inflammatory and analgesic applications. β-Elemene (3–6%) belongs to a constituent class with anticarcinogenic activity documented in Chinese oncology clinical literature (injection route); however, T&Y explicitly states topical EO application is not therapeutically equivalent and no anticarcinogenic claims can be made for this EO. Chemistry analysis by Behra (private communication, 2003), cited in T&Y, confirms the sesquiterpene hydrocarbon-dominant profile (~25–50% combined). All therapeutic ratings are based on traditional use and class-extrapolation from α-himachalene-bearing peer EOs (Himalayan cedarwood).
NarrativeTâm trạng: Grounding, Balancing
Chakra
root
Ngũ hành
moc
| Phương pháp | Liều lượng | Ghi chú |
|---|---|---|
| Topical massage | 2–3% in carrier oil (max 5% adult; ~4–6 drops per 10 ml carrier) | Ưu tiên cho đau cơ, đau khớp, căng cơ — xoa bóp nhẹ nhàng lên vùng bị ảnh hưởng. Carrier phù hợp: dầu hạnh nhân ngọt hoặc jojoba. Thử nghiệm trên vùng nhỏ da trước lần đầu. |
| Diffusion | 3–5 drops in 100 ml water (standard ultrasonic diffuser fill) | For calming and grounding; sessions 30–60 min with ventilation. Pairs well with frankincense or sandalwood. Avoid continuous diffusion in enclosed spaces; not recommended around infants. |
| Bath (diluted) | 4–6 drops pre-dispersed in 1 tsp bath emulsifier or carrier before adding to bath | PHẢI pha loãng với chất phân tán trước khi thêm vào bồn — KHÔNG thêm trực tiếp. Thư giãn toàn thân 15–20 phút. Không dùng cho trẻ em dưới 6 tuổi. |
| Warm compress | 2–3 drops in 200 ml warm water, applied via dampened cloth | For localized chronic joint stiffness or muscle tension; hold 10–15 min on affected area. Avoid on acutely inflamed or broken skin. Do not use warm compress on acute injuries. |
| Inhalation (direct) | 1–2 drops on tissue or cupped palms | 3–5 slow breaths for grounding and stress relief. Woody-earthy profile; suitable for daytime focus or pre-sleep calming. Avoid direct undiluted oil contact with mucous membranes. |
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