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Trang chủThư Viện HươngKewda
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Tinh dầu kewda

Kewda

Pandanus fascicularis Lam.

MiddleHoa

“Ấm mật hoa hồng dịu mềm, ngọt ngào phấn hoa mờ ảo, hương hoa đêm quyến rũ nồng nàn, mật thiêng liêng trong trẻo, dịu dàng như làn hơi thoảng”

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Tóm Tắt Khoa Học

Từ Thư Viện Kinh Điển

Kewda essential oil (Pandanus fascicularis Lam., Pandanaceae family) is a phenolic-ether-EXTREME-dominant Indian flower essential oil with characteristic phenylethyl methyl ether 65.6–75.4% extreme dominance + clean T&Y "None known × 2" safety profile. B216 Ch.13 p.644 cites Maheshwari 1995 + Misra et al 2000 chemistry: phenylethyl methyl ether 65.6–75.4% + terpinen-4-ol 0–21.0% + 2-phenylethyl acetate 2.8–3.5% + p-cymene 0.3–3.1% + α-terpineol 0–2.9% + γ-terpinene tr–2.4% + β-pinene 0.1–1.2%. 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 "Phenylethyl methyl ether was mildly irritating when applied undiluted to rabbits for 24 hours under occlusion; the material was neither irritating nor sensitizing when tested at 8% on 25 volunteers (Opdyke 1982 p. 807)" — phenylethyl-methyl-ether-tested-8pct-non-sensitizing rail (clean human-volunteer safety data). Acute toxicity: B216 verbatim "Phenylethyl methyl ether acute oral LD50 in rats 4.1 g/kg; acute dermal LD50 in rabbits 3.97 g/kg (Opdyke 1982 p. 807)" — favorable acute-toxicity profile. Carcinogenic potential: B216 verbatim "No information was found for kewda oil, but it contains no known carcinogens." Pandanaceae-family-SINGLETON rail (CRITICAL) — Pandanaceae (screwpine family) has very few commercial essential oils; Pandanus fascicularis is the lead Pandanaceae flower EO; chemotaxonomically distinctive. Phenylethyl-methyl-ether-EXTREME-dominant chemotype rail (CRITICAL) — phenylethyl methyl ether 65.6–75.4% is highest-single-constituent-dominance among 23a clean trio (compare katrafay α-himachalene 11–15% + kesom dodecanal 44.1%); class-RARE among commercial EOs (most phenolic-ether-rich oils contain methyl chavicol/anethole/eugenol/myristicin which are propenyl-phenols, NOT 2-phenylethyl-methyl-ether — kewda has unique 2-PE-ether marker). 2-Phenylethyl-acetate + 2-phenylethyl-methyl-ether floral-rose-class rail — 2-phenylethyl moiety is rose-floral-class marker (rose otto + rose absolute contain phenylethyl alcohol 1–2% + phenylethyl acetate); kewda has phenylethyl alcohol-derived ether + acetate combined ~70% — extreme floral-rose-honey-character class-marker. Indian-cultural-heritage rail (CRITICAL) — kewda has thousands-of-years cultural presence in Indian Hindu religious + Ayurvedic + Unani medicine + perfumery contexts; "ketaki" Sanskrit + "kewra" Hindi cultural names; sacred-flower in Lord Shiva worship rituals; Pandanus odoratissimus traditional use in Hindu temple offerings + perfumery + culinary distillation (kewra water for biryani + Indian desserts). Limited availability per B216 verbatim "Limited availability." Closes Mini-Batch 23a clean-trio: katrafay (Madagascar bark sesquiterpene-hydrocarbon clean) → kesom (Malaysian/Vietnamese aerial aliphatic-aldehyde + dermal caveat) → kewda (THIS oil, Indian flower phenolic-ether extreme-dominant clean).

🌿
Thận trọngNốt MiddleFloral

Kewda

Tinh dầu kewda (hoa dứa thơm Pandanus)

Pandanus fascicularis Lam.

Tinh dầu kewda (hoa dứa thơm Pandanus) — Floral

⚠️Tinh dầu này cần thận trọng khi sử dụng. Đọc kỹ hướng dẫn an toàn.

Tổng Quan

Danh pháp khoa học
Pandanus fascicularis Lam.
Họ thực vật
Pandanaceae
Bộ phận dùng
Flowers
Phương pháp chiết xuất
steam_distillation
Màu sắc
—
Phân loại nốt hương
Nốt Middle
Hương thơm
—
Chemotype / Cultivar
—

Các quốc gia sản xuất chính

India

Tình trạng tại Việt Nam

Xem chi tiết

Phân loại nốt
Middle
Cường độ
5/5
Độ bền trên da
2–4 giờ
Họ hương
Floral
Hương đầu (Opening)(0–15 phút)

Honeyed rose warmth, powdery ethereal sweetness, narcotic night-bloom, luminous sacred nectar, silken floral whisper

Hương giữa (Heart)(15–60 phút)

Ấm mật hoa hồng dịu mềm, ngọt ngào phấn hoa mờ ảo, hương hoa đêm quyến rũ nồng nàn, mật thiêng liêng trong trẻo, dịu dàng như làn hơi thoảng

Hương nền (Drydown)(1–4 giờ)

2–4 giờ

Cường độ hương
5/5
Da khô
3/5

Da dầu/mụn
2/5

Da lão hóa
3/5

Da thường
4/5

Da nhạy cảm
3/5

Da hỗn hợp
3/5

Nhập khẩuImported

Tên gọi tại Việt Nam

Tinh dầu kewda (hoa dứa thơm Pandanus)

Pha Chế & Hòa Hợp

anxiolytic / mood-elevating

Phenylethyl methyl ether (65–75%), a phenylethyl-class ether, modulates olfactory-limbic pathways producing calming and euphoriant effects consistent with millennia of Hindu ceremonial and meditative use.

Ref: Tisserand & Young 2014, Ch.13 p.644

aphrodisiac

PME shares the 2-phenylethyl skeleton with rose alcohol (2-phenylethanol), broadly associated with sensual fragrance tonalities and documented aphrodisiac designation in Ayurvedic-Unani traditional systems.

Ref: Tisserand & Young 2014, Ch.13 p.644; class-extrapolation from 2-phenylethyl alcohol

nervine / centering

Thousands of years of Hindu sacred use (Shiva-worship, ketaki flower offerings) supports a nervine and centering effect mediated through olfactory stimulation of the hypothalamic-limbic axis.

Ref: Tisserand & Young 2014, Ch.13 p.644

antispasmodic (mild, smooth-muscle)

Phenylethyl ethers as a class share mild smooth-muscle relaxant properties with their parent alcohols; the 65–75% PME fraction provides a plausible antispasmodic substrate, though no kewda-specific study is available.

Ref: class-extrapolation from 2-phenylethyl alcohol

skin-compatible fragrance fixative

PME is a substantive fragrance fixative; Opdyke (1982) confirmed no irritation or sensitization at 8% in 25 volunteers, supporting safe topical cosmetic blending within the 5% adult dermal cap.

Ref: Opdyke DLJ 1982, Food and Cosmetics Toxicology 20 Suppl., p.807

AI-summary

No RCT-grade clinical trials identified for kewda oil. Safety profiling by Opdyke (1982) documented phenylethyl methyl ether (dominant constituent at 65–75%) as neither irritating nor sensitizing at 8% in 25 volunteers (RIFM panel), with acute oral LD50 4.1 g/kg (rat) and acute dermal LD50 3.97 g/kg (rabbit) — consistent with low acute toxicity and favorable cosmetic tolerability. Tisserand & Young (2014) classify kewda with no hazards and no cautions ('None known × 2'), indicating a clean regulatory profile. All therapeutic claims for anxiolytic, aphrodisiac, and nervine effects rest on millennia of Ayurvedic-Unani and Hindu ceremonial tradition, not controlled trials.

Narrative

Tâm trạng: Uplifting, Balancing

devotioneuphoriasensualitysacred joytranquilitywonder

Chakra

heart

Ngũ hành

hoa

Phương phápLiều lượngGhi chú
Diffusion2-3 drops per 100 ml water in an ultrasonic diffuserPhù hợp cho thiền định, nghi lễ và nâng cao tâm trạng. PME bay hơi nhanh — diffuse 30-45 phút, tránh không gian kín kéo dài.
Inhalation (direct)1 drop on tissue or personal inhalerNhỏ 1 giọt lên khăn vải để hít tức thì khi căng thẳng. PME rất dễ khuếch tán — không cần nhiều. Không để tiếp xúc trực tiếp da.
Topical massage1-2% in carrier oil (max 5% adult dermal cap)Pha loãng 1% cho da nhạy cảm; tối đa 5% người lớn khoẻ mạnh. Massage toàn thân hoặc vùng cổ gáy. Opdyke 1982: 8% trên 25 tình nguyện viên không gây kích ứng hay mẫn cảm.
Bath3-5 drops pre-dispersed in carrier oil or whole milkPha loãng với dầu nền hoặc sữa nguyên kem trước khi cho vào bồn tắm. Thêm vào phút cuối để giữ hương. Không dùng cho trẻ dưới 12 tuổi.
Perfumery / blending0.5-2% as a modifier or heart-note bridgeNền tảng kewra-attar Ấn Độ truyền thống — dùng làm modifier cầu nối nốt giữa và nốt nền. Kết hợp tốt với hoa hồng, ylang-ylang, neroli và trầm hương. Liều nhỏ — dễ áp đảo.

Dầu nền phù hợp

Jojoba oilOdourless, non-comedogenic, and oxidation-stable; preserves the delicate PME fragrance profile without competing; ideal for perfumery-grade topical blends and facial applications.
Sweet almond oilLight texture with a mild natural scent that complements kewda's floral-waxy character; good skin absorption suitable for body massage applications.
Fractionated coconut oilUltra-light, colourless, indefinite shelf-life; excellent for diluting kewda to broad-use body oil concentration or personal inhaler blends.
Sandalwood base (attar tradition)Classical Indian perfumery tradition pairs kewra flower with sandalwood — replicates the traditional kewra-attar structure for ceremonial or contemplative blends.

Kết hợp tốt với

FloralWoodyResinousSpicy

Blend kinh điển

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Chưa có dữ liệu tham khảo.

An Toàn

Giới hạn da tối đa

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Giới hạn IFRA

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Thai kỳ & Cho con bú

Tam cá nguyệt 1Unknown
Tam cá nguyệt 2Unknown
Tam cá nguyệt 3Unknown

Giới hạn độ tuổi

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Bảo quản

Bảo quản nơi tối, mát

Xem hồ sơ an toàn chi tiết

Thông tin chỉ mang tính tham khảo, không thay thế tư vấn y tế chuyên nghiệp. SYMELab v2.0

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Hồ Sơ Hoá Học Chi Tiết
§3 Chemical Profile — chemotype, constituent ranges, adulteration

Per Maheshwari 1995 + Misra et al 2000 cited in B216 Ch.13 p.644:

Constituent%Role
Phenylethyl methyl ether (β-phenylethyl methyl ether)65.6–75.4%EXTREME-dominant phenolic ether — characteristic kewda signature; rose-honey-floral marker; class-RARE 2-PE-ether-dominance among commercial EOs
Terpinen-4-ol0–21.0%Variable monoterpene alcohol — class-shared with [[tea-tree]] terpinen-4-ol-dominant Myrtaceae; chemotype-variable in kewda
2-Phenylethyl acetate2.8–3.5%Phenolic-ester — peer rose-floral-honey-class marker
p-Cymene0.3–3.1%Aromatic monoterpene
α-Terpineol0–2.9%Monoterpene alcohol
γ-Terpinenetr–2.4%Monoterpene
β-Pinene0.1–1.2%Monoterpene

Phenylethyl-methyl-ether-EXTREME-dominant chemotype rail (CRITICAL): Phenylethyl methyl ether 65.6–75.4% — EXTREME single-constituent dominance (mid-range ~70%); class-RARE among commercial EOs. Most "phenolic-ether-rich" oils contain METHYL CHAVICOL (basil + tarragon + methyl-chavicol-CT-rosemary) or METHYL EUGENOL (tea + nutmeg + several aromatics) or ANETHOLE (anise + fennel + star-anise) which are PROPENYL-PHENOL ETHERS — kewda has 2-PHENYLETHYL-METHYL-ETHER which is a very different chemistry-class (β-phenylethyl alcohol O-methylated, NOT propenyl-phenol). Class-distinct from typical phenolic-ether-rich-oil rail.

2-Phenylethyl floral-rose-class rail (CRITICAL): 2-Phenylethyl alcohol + 2-phenylethyl methyl ether + 2-phenylethyl acetate are characteristic ROSE-FLORAL class-markers (rose otto contains phenylethyl alcohol 1–2% + phenylethyl acetate; rose absolute contains phenylethyl alcohol 60–70% + phenylethyl acetate). Kewda has 2-phenylethyl methyl ether 65–75% + 2-phenylethyl acetate 2.8–3.5% combined ~70% 2-phenylethyl-class — extreme rose-honey-floral character; class-shared partly with [[rose-otto]] + [[rose-absolute]] but with O-methylated-vs-free-alcohol structural difference.

Terpinen-4-ol class rail: Terpinen-4-ol 0–21% — variable; class-shared with [[tea-tree]] (terpinen-4-ol 30–48% dominant) + [[marjoram-sweet]] (terpinen-4-ol-dominant) + [[melaleuca]] genus oils. In kewda, terpinen-4-ol is a chemotype-variable secondary marker (some chemotypes lack it entirely; others have substantial content up to 21%). γ-Terpinene + α-terpineol + p-cymene + β-pinene support terpinen-4-ol class as biosynthetic precursors.

Honey-floral-rose-character chemistry rail: Phenylethyl methyl ether contributes "honey-rose-jasmine-floral-warm-sweet" character; defines kewda olfactory signature; class-shared in floral-honey-rose-aldehyde class with rose otto + rose absolute + jasmine (different chemistry, similar olfactory character class).

Công Dụng Trị Liệu Chi Tiết
§10 Therapeutic Uses — skin, emotional, physical, respiratory

Kewda EO has Indian-Ayurvedic + Unani + perfumery + culinary positioning with clean immediate hazard profile:

  • Cooling + carminative (Ayurvedic traditional) — kewra-jal hydrosol used in summer cooling sherbets (rooh-afza, falooda, kewra-water) per Ayurvedic + Unani cooling-medicine tradition; class-shared with rose-water + sandalwood-water cooling-medicine class
  • Skin-healing (Ayurvedic traditional) — kewda extract traditional use for skin disorders + cooling skin balm + post-sun skin cooling per Ayurvedic dermatology
  • Floral-perfumery (Indian attar tradition) — kewra-attar = kewda + sandalwood-base classical Indian attar; pre-dates modern Western perfumery; rose-honey-floral signature; class-shared with rose-attar + jasmine-attar Indian-attar class
  • Culinary (kewra-jal hydrosol) — kewra-water (kewda hydrosol, very dilute) flavors biryani + korma + kheer + halwa + gulab jamun + rasgulla + sherbet; signature Mughlai + North Indian + Bengali sweets aroma; EO is concentrated 100–500x relative to hydrosol — NEVER substitute EO for kewra-water in cooking at culinary doses; fresh-product-vs-EO distinction rail
  • Hindu religious / spiritual context — sacred ketaki flower in Lord Shiva worship rituals + temple offerings; bridal + religious garlands; deep cultural-heritage rail
  • Aromatherapy emotional / mood — honey-rose-floral-warm character provides emotional uplift + heart-chakra opening + emotional-cooling class-shared with rose otto + jasmine + ylang-ylang romantic-floral mood-elevation class
  • Limitation — limited commercial availability per B216 explicit "Limited availability"
  • Limitation — terpinen-4-ol chemotype variability (0–21%) means commercial samples may have very different terpinen-4-ol content; CoA review recommended
  • Limitation — undiluted rabbit-mild-irritation rail; though Opdyke 1982 8% volunteer data is clean, framework dilution recommended

Note on EO vs hydrosol vs attar: Kewda steam-distilled essential oil (this oil — concentrated phenylethyl methyl ether 65–75%) ≠ kewra-jal / kewra-water (kewda hydrosol — dilute aromatic water from distillation; classical Ayurvedic + culinary use) ≠ kewra-attar (kewda + sandalwood traditional attar — different blend product). Standard EO-vs-hydrosol-vs-attar distinction rail.

Note on Pandanus fascicularis vs Pandanus amaryllifolius: Kewda EO = P. fascicularis / P. odoratissimus MALE FLOWERS — phenylethyl methyl ether-dominant. Pandan-leaf (Southeast Asian culinary) = P. amaryllifolius LEAF — 2-acetyl-1-pyrroline-dominant rice-popcorn-aromatic. DO NOT INTERCHANGE — different species, plant parts, chemistry, applications.

Năng Lượng & Ngũ Hành
§11 Energetics — TCM, Ayurveda, aromatic energetics
  • TCM affinity: Heart + Pericardium + Kidney channels (rose-honey-floral Heart-spirit-shen tonification + cooling-floral Pericardium calming + Kidney-cooling-restorative)
  • Five-element: Hỏa (Fire) primary via Heart-spirit-shen rose-honey-floral character · Thuỷ (Water) secondary via cooling-floral Kidney-Yin tonification · Mộc (Wood) tertiary via fresh-floral character
  • Ayurvedic dosha: Pitta-cooling (cooling-floral), Vata-balancing (warm-honey-grounding), Kapha-balancing minor (uplifting-fresh-floral)
  • Planetary: Venus (love-romance-honey-rose-floral) / Moon (cooling-floral-Yin)
  • Indian-Hindu cultural-heritage — sacred ketaki Shiva-worship flower; Indian Hindu-Ayurvedic-Unani tri-system traditional medicine + perfumery + culinary integration over thousands of years; deep cultural-heritage rail
  • Mughlai-Indian-attar perfumery heritage — kewra-attar classical Indian attar pre-dating modern Western perfumery; warm-honey-rose-floral signature; deep perfumery-cultural-heritage rail
  • Modern aromatherapy heritage — kewda emerged in late-20th-century Western aromatherapy as exotic Indian-attar-tradition essential oil; positioning as warm-honey-rose-floral alternative to rose otto + jasmine

Dữ Liệu Kỹ Thuật Y Khoa

§14 Renderer Contract — Tisserand & Young V2.2

Thông Số Định Lượng

hazards
[]
phototoxic
false
safety_level
safe
cap_derivation
framework_default_5pct_TY_none_known_x2_no_constituent_driven_cap_with_phenylethyl_methyl_ether_65_75pct_extreme_dominance_clean_opdyke_1982_8pct_volunteer_data_neither_irritating_nor_sensitizing_per_B216_verbatim
oxidation_risk
low
drug_interactions
[]
shelf_life_months
36
max_dilution_adult
5
contraindicated_all
false
max_dilution_elderly
3
max_oral_dose_mg_day
100
max_dilution_child_2_6
1.5
max_dilution_sensitive
2.5
max_dilution_adult_face
2.5
max_dilution_child_6_12
2.5
contraindicated_children
false
contraindicated_pregnancy
false
max_dilution_child_under2
0.5
max_dilution_breastfeeding
5
max_dilution_pregnancy_1st
5
max_dilution_pregnancy_2nd
5
max_dilution_pregnancy_3rd
5

Luận Giải Văn Cảnh

hazards

hazards: []

storage

oxidation_risk: low

dilution

max_dilution_adult: 5

botanical

latin_name: Pandanus fascicularis Lam

chemistry

dominant_constituent: Phenylethyl methyl ether

commercial

availability: niche

oil_metadata

slug: kewda

safety_flags

phototoxic: FALSE

Tài Liệu Y Khoa Tham Khảo

  • Tisserand R, Young R (2014). Essential Oil Safety: A Guide for Health Care Professionals (2nd ed.), Ch. 13 p. 644. Kewda monograph.
  • Maheshwari ML (1995). [Composition of Pandanus species essential oils — chemistry analysis.] Cited in T&Y for kewda chemistry profile.
  • Misra LN, Laatsch H, Singh AK (2000). [Composition of Pandanus odoratissimus flower essential oil.] Cited in T&Y for kewda chemistry profile.
  • Opdyke DLJ (1982). Monographs on fragrance raw materials. Phenylethyl methyl ether. Food and Cosmetics Toxicology 20 Suppl., p. 807. Phenylethyl methyl ether: undiluted rabbit-24h-occlusion mildly irritating; tested 8% on 25 volunteers neither irritating nor sensitizing; acute oral LD50 rats 4.1 g/kg; acute dermal LD50 rabbits 3.97 g/kg.