Боронія
Ripe raspberries crushed into violet petals, left to steep in warm black tea. One of the few natural extracts rich in free ionones — the molecules that define violet — layered over a tobacco-leaf dry-down that no synthetic reconstruction fully captures.
- Type
- Складник
- Olfactive family
- Квіткові
- Source
- flowers
- Chemical class
- complex natural (absolute)
Запах
Теруар і походження
Докладно
Цікавий факт
Boronia megastigma is pollinated by a single species of tiny metallic day-flying moth, Prophylactis megastigmallax, identified by CSIRO researchers in 2025. The female moth carries a pollen-collecting structure on the dorsal side of her abdomen — unique among all 150,000 known Lepidoptera species. The relationship is an obligate mutualism: the moth is the only pollinator for the plant, and the plant is the only larval food source for the moth. Each depends entirely on the other for survival.
Отримання й хімія
Спосіб отримання
Solvent extraction — not steam distillation, which would destroy the delicate ester and ionone profile. Fresh flowers are macerated in petroleum ether (hexane fraction) to produce a concrete: a yellow-brown waxy solid representing 0.3–0.7% of fresh flower weight. This concrete is then washed with ethanol and vacuum-concentrated to yield the absolute — a viscous, dark brown to olive-green liquid. The concrete-to-absolute conversion recovers approximately 60% of the extractable aromatics. At plantation scale, a mature hectare produces roughly 2 tonnes of flowers, yielding 3–6 kg of extract. The harvesting window is narrow: September–October in the Southern Hemisphere, and flowers must be processed within hours of picking, ideally when 50–70% are open. Enfleurage was used historically but abandoned by the mid-20th century due to impractical throughput.
- Формула
- N/A — complex absolute (key components: β-ionone, dodecyl acetate, linalool)
- CAS
- 8053-33-6
- Ботанічна назва
- Boronia megastigma
- Зовнішній вигляд
- Dark brown to olive-green viscous liquid
- Сила запаху
- Від середньої до сильної
- Синоніми
- BROWN BORONIA BORONIA ABSOLUTE BORONIA CONCRETE BORONIA EXTRACT
Restricted (sensitisation). IFRA imposes maximum usage levels by product category — e.g., 0.20% in lip products (Cat. 4). Restricted components include trace geraniol (<0.10%), farnesol (<0.20%), benzyl benzoate (<0.10%), and benzyl alcohol (<0.01%). The 3.0% limit cited by some sources refers to maximum in fragrance concentrate, not finished product.
- Температура спалаху
- 143.00 °F. TCC ( 61.67 °C. )
- Відносна густина
- 0.95000 to 1.02000 @ 25.00 °C.
У парфумерії
Boronia absolute functions as a heart-note modifier and accord authenticator. Its dual character — ionone-driven violet quality plus fruity ester body — makes it a natural bridge between floral hearts and fruity top notes without the synthetic sharpness of isolated beta-ionone. In chypre compositions, it mediates between bergamot and oakmoss with a warmth that synthetic ionones lack. In tea accords, its megastigmatrienone isomers (C13-norisoprenoids shared with tobacco leaf and black tea) lend documentary realism to what would otherwise read as a flavourist's reconstruction. In violet soliflores, a trace of boronia absolute — typically 0.5–2% of the concentrate — adds the berry-jam richness that alpha-isomethyl ionone (CAS 127-51-5) alone cannot deliver. The material also finds use in fruity-floral compositions, where its dodecyl acetate content provides a waxy, skin-like texture beneath the fruit. Cost restricts its use: at approximately €15,000–19,000 per kilogram for the absolute, it is reserved for luxury formulations where a drop-level addition adds perceptible depth. IFRA restricts boronia absolute due to sensitisation potential; formulators must observe maximum usage levels per product category (approximately 0.20% in Category 4 products per IFRA 51st Amendment).
Див. також
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