Extraction Methods of Kiwi Seed Oil

Historically, kiwi seed oil was obtained through traditional mechanical methods such as hammer milling the fruit and using screens and water to separate the skin and pulp from the seeds. Manual peeling and pressing using specialized devices like the Auriol press were also common, often followed by decanting in water to isolate the seeds. These older processes were sometimes seen as unsympathetic to the physical condition of the seed, frequently resulting in a significant proportion of damaged seed coats.

Today, the primary commercial method for high-quality kiwi seed oil is cold expression (pressing), where cleaned and dried seeds are mechanically pressed at low temperatures, typically between 26-32°C (80-90°F), to preserve delicate nutrients like alpha-linolenic acid. Another advanced and increasingly popular method is supercritical CO2 extraction, which uses liquefied carbon dioxide as a solvent at controlled temperatures (30-40°C) to efficiently pull the oil from crushed seeds. This modern technique is favored for producing a pure, nutrient-dense oil without the use of chemical solvents. Emerging industrial and experimental methods also include ultrasonic-assisted extraction, three-phase partitioning (TPP) using salts and solvents, and aqueous enzymatic extraction using alkaline protease to improve oil yields.

The Kiwi note, being a modern accord, is often featured in vibrant, fruity-floral, and aquatic compositions designed to evoke tropical energy and sparkling freshness. It gained traction in the late 20th and early 21st centuries alongside the rise of the fruity fragrance family. The use of Kiwi provides a unique balance of sweetness and tartness, reminiscent of green melon and subtle strawberry, helping modern scents achieve a distinctly juicy and invigorating opening. It is a creative note, often synthesized to bypass the difficulty of natural extraction.

• A notable example of a fragrance featuring the kiwi note is Escada Sexy Graffiti (2011), where it contributes to the vibrant, summer-themed, fruity cocktail opening, blending with notes like raspberry and strawberry to create an intensely sweet and cheerful tropical vibe.
• The note also appears in Acqua di Parma Fico di Amalfi, where its subtle green and slightly tart accent supports the main fig note, adding a touch of invigorating freshness that enhances the scent’s Mediterranean feel.

Kiwi's invigorating character makes it highly suitable for contemporary fragrances, particularly those marketed for warmer weather or youthful demographics. Perfumers utilize this note not just for its immediate juiciness but also for its slightly green undertone, which helps transition the bright opening into floral or aquatic hearts. Fragrances like Avon's Hawaiian Shores illustrate how Kiwi is deployed to create a light, exotic, and uplifting accord, establishing a strong, vibrant first impression before fading into muskier or softer dry-downs.

Kiwifruit is a versatile, year-round note in perfumery thanks to staggered harvest cycles across the Northern and Southern Hemispheres. In the Northern Hemisphere, domestic crops in regions like California, Italy, and Greece are typically harvested from late October through November, with peak availability extending through the winter months until May. Conversely, the Southern Hemisphere season, led by major producers in New Zealand and Chile, begins its harvest between March and May, with fruit available from late spring through autumn. This global network ensures that while specific varieties like golden kiwis have shorter windows from December to March, the fresh, tangy essence of the fruit can be captured and utilized regardless of the calendar season.