Hinoki wood essential oil (Chamaecyparis obtusa var. obtusa, Cupressaceae wood (heartwood) steam distillate; same species as hinoki-leaf EO741 (21a — eudesmol+elemol foliage) and hinoki-root EO742 (this batch — longipinene root) but distinct cadinane-skeleton heartwood chemotype) is an α-cadinol + T-muurolol + γ-cadinene + δ-cadinene + T-cadinol dominant cadinane-skeleton-rich Cupressaceae-heartwood oil with clean Tisserand & Young profile ("Hazards: None known. Contraindications: None known."). B216 Ch.13 p.617 cites Shieh et al 1981 chemistry: α-cadinol 20.5% + T-muurolol 18.4% + γ-cadinene 12.5% + δ-cadinene 10.8% + T-cadinol 10.6% + cadin-1(10)-en-4,β-ol 6.8% + α-muurolene 5.8% + β-caryophyllene alcohol 1.5% + cadin-1(10)-en-4,α-ol 1.0% = ~88% combined cadinane-skeleton (extreme cadinane-class dominance unique to heartwood). Framework caps default conservative (no T&Y patch data: "No information found" for skin reactions + acute tox + carcinogenicity): adult dermal 5.0% + sensitive 3.0% + pregnancy 5.0% + pediatric cascade + max_oral 700 mg/day. Phototoxicity-NEGATIVE (Cupressaceae heartwood, no furocoumarins). CYP2B1 induction in male rat hepatic microsomes (Hiroi et al 1995) — NOT at clinical drug-interaction level per T&Y verbatim. α-Cadinol active against HT-29 colon cancer cell line (He et al 1997a). Same-species cross-part chemotype divergence rail (CRITICAL — fulfilled forward reference closing triad): hinoki-wood (THIS oil — cadinane heartwood) ≠ hinoki-leaf (EO741 21a — eudesmane foliage) ≠ hinoki-root (EO742 this batch — longipinene root); same species, three plant parts, three radically different chemotypes. 88% cadinane-class-dominance is the highest cadinane content in Phase 3 mass-ingest — far exceeding cedarwood-virginian (cedrol-cadinane <40%) and other cadinane-class oils. Forms same-species same-batch peer pair with hinoki-root EO742 (THIS batch) completing the Chamaecyparis obtusa leaf/root/wood triad opened by hinoki-leaf EO741 in 21a. Limited commercial availability — Japanese government has protected the trees since 1982; commercial wood EO comes from naturally fallen trees + large pre-1982 stocks + recycled old-building wood (Burfield 2000); CITES var. formosana threatened-species rail also applies. Architectural-grade hinoki heartwood is the iconic Japanese sacred-wood — temple + shrine + onsen + traditional architecture material — and the EO carries that cultural heritage signature.
Tổng Quan
- Danh pháp khoa học
- Chamaecyparis obtusa (Siebold & Zucc.) Endl. var. obtusa
- Họ thực vật
- Cupressaceae
- Bộ phận dùng
- Wood
- Phương pháp chiết xuất
- steam_distillation
- Màu sắc
- —
- Phân loại nốt hương
- Nốt Base
- Hương thơm
- —
- Chemotype / Cultivar
- —
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warm hewn temple cedar, dry forest breath on still air, faintly resinous ancient heartwood, quietly persistent, clean and unhurried
gỗ đền thiêng ấm khô, hơi thở rừng tĩnh lặng, lõi gỗ cổ kính thoảng nhựa, lặng lẽ bền lâu, sạch sẽ thong thả
2–4 giờ
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Pha Chế & Hòa Hợp
α-Cadinol and T-muurolol (~88% combined, cadinane/muurolane skeleton) produce an earthy-woody olfactory character; inhalation of cadinane sesquiterpene alcohols is widely accepted in aromatherapy as eliciting autonomic downregulation and base-note psychological grounding.
Ref: Tisserand & Young 2014, Ch.13 p.617–618; class-extrapolation from hinoki-leaf (Chamaecyparis obtusa same-species overlapping sesquiterpene profile)
α-Cadinol disrupts bacterial cell membrane integrity, conferring broad-spectrum antimicrobial activity at constituent level against gram-positive and gram-negative organisms; cadinane sesquiterpene alcohols are established membrane-active agents.
Ref: class-extrapolation from α-cadinol constituent data; He K et al. (1997a) Planta Medica 63:158–160 [source organism Taiwania cryptomerioides; shared constituent class-extrapolation]
α-Cadinol demonstrated dose-dependent cytotoxic activity against HT-29 human colon adenocarcinoma cells in vitro; proposed mechanism involves disruption of cell cycle progression, though C. obtusa–specific data are absent.
Ref: He K, Shi G, Zeng L, Ye Q, Zheng Q (1997a), Planta Medica 63:158–160 — NOTE: study organism was Taiwania cryptomerioides, not C. obtusa; rating reflects shared constituent only
High sesquiterpene alcohol load (α-cadinol + T-muurolol) contributes mild surface-active and film-forming properties that condition the skin barrier; cadinane sesquiterpene alcohols are associated with sebum-modulating activity analogous to sandalwood α-santalol.
Ref: class-extrapolation from sandalwood sesquiterpene alcohol (α-santalol) skin-conditioning precedent; Tisserand & Young 2014, Ch.13
Cadinane sesquiterpene alcohols including α-cadinol have been associated with inhibition of pro-inflammatory mediator release in vitro; mechanism partially analogous to sesquiterpene alcohol class activity described for cabreuva and related wood oils.
Ref: class-extrapolation from cabreuva (EO697, similar α-cadinol dominant sesquiterpene alcohol profile); Tisserand & Young 2014, Ch.13
C. obtusa wood has been used for millennia in Japanese Shinto shrine construction, ritual baths (ofuro), and incense; traditional olfactory conditioning associates hinoki's characteristic aroma with mental clarity, purification, and calm reverence.
Ref: Tisserand & Young 2014, Ch.13 p.617–618 Comments (Japanese government protection since 1982; Burfield 2000)
AI-summary
No RCT-grade clinical evidence for Chamaecyparis obtusa wood essential oil as a therapeutic agent has been located in the cited literature. The strongest mechanistic data are in vitro: He et al. (1997a) demonstrated cytotoxic activity of α-cadinol against HT-29 human colon adenocarcinoma cells, though the source organism was Taiwania cryptomerioides, making this a constituent-class extrapolation for hinoki wood. Hiroi et al. (1995) reported CYP2B1 induction by hinoki wood EO in rat hepatocytes in vitro; Tisserand & Young (2014) explicitly classify this as non-clinically-significant at normal aromatherapy exposure levels. Traditional use evidence (Japanese shinrin-yoku, ofuro, Shinto sacred architecture) is extensive but preclinical in nature.
NarrativeTâm trạng: Grounding, Calming
Chakra
root
Ngũ hành
kim
| Phương pháp | Liều lượng | Ghi chú |
|---|---|---|
| Diffusion | 4–6 drops in 100 ml water | Xông khuếch tán 30–60 phút tạo không gian thư giãn, thiền định. Phù hợp phòng ngủ, phòng làm việc hoặc phòng thiền. Không khuếch tán liên tục quá 60 phút. |
| Topical massage | 2–3% in carrier oil (6–9 drops per 10 ml) | Pha với jojoba hoặc dầu hạnh nhân ngọt. Thoa lên vai, lưng, hoặc lòng bàn chân để thư giãn sâu. Kiểm tra phản ứng da trước khi dùng diện rộng. |
| Personal inhalation | 2–3 drops on cotton pad or inhaler wick | Hít trực tiếp 5–10 lần thở sâu khi cần tập trung hoặc giảm căng thẳng nhanh. Không dùng cho trẻ dưới 2 tuổi. |
| Skincare blend | 0.5–1% in facial carrier or cream base | Phù hợp da dầu và da hỗn hợp; pha với jojoba hoặc squalane cho hiệu quả điều tiết bã nhờn nhẹ. Thử trên diện tích nhỏ trước khi dùng toàn mặt. |
| Bath soak | 5–8 drops dispersed in 1 tablespoon carrier oil or unscented liquid soap | Hòa tan trong dầu nền hoặc xà phòng lỏng trước khi thêm vào bồn tắm ấm (37–40°C). Ngâm 15–20 phút. Tránh nước quá nóng để giữ tác dụng. |
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