Limonene is a chemical found in the rind of citrus fruits, such as lemons, limes, and oranges. It is especially concentrated in orange peels, comprising around 97% of this rind’s essential oils. Limonene's strong aromas protect plants by deterring predators. Limonene is one of the most common terpenes found in nature and may offer several health benefits. It has been shown to possess anti-inflammatory, antioxidant, anti-stress, and possibly disease-preventing properties. Limonene is a popular additive in foods, cosmetics, cleaning products, and natural insect repellants. For example, it’s used in foods like sodas, desserts, and candies to provide a lemony flavor. Limonene is extracted through hydrodistillation, a process in which fruit peels are soaked in water and heated until the volatile molecules are released via steam, condensed, and separated. Due to its strong aroma, limonene is utilized as a botanical insecticide. It’s an active ingredient in multiple pesticide products, such as eco-friendly insect repellents. Other household products containing this compound include soaps, shampoos, lotions, perfumes, laundry detergents, and air fresheners. Additionally, limonene is available in concentrated supplements in capsule and liquid form. These are often marketed for their supposed health benefits.This citrus compound is also used as an aromatic oil for its calming and therapeutic properties.
https://www.healthline.com/nutrition/d-limonene#benefits
檸烯是一種在柑橘類水果果皮有的成份，檸檬，青檸，橙等。此成份在橙皮內濃度尤其高，約橙皮香精油佔97%。檸烯濃郁氣味可趕走捕食者以保護植物。它是大自然最常見的萜烯並有幾種健康功效。包括抗炎，抗氧，減壓，甚至有防止疾病的可能。檸烯亦是常見的食物，化妝品，清潔用品，驅蟲劑內的添加劑。用在汽水，甜品及糖果中用以加入檸檬味的。檸烯因很强的氣味能成為植物的除蟲劑，它是好幾種殺蟲藥的活性藥物成份，即是環保驅蟲劑。其他家居用品包括肥皂，洗髮水，潤膚露，香水，洗衣液，空氣清新劑。檸烯亦被用作膠囊及液體的補充劑以達至健康功效。這柑橘成份亦用作香精油以達到鎮靜及治療功效。
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