What major component of citrus essential oils, derived from yuzu peel, can become irritating in high concentrations?
Answer
Limonene
Limonene is identified as a major chemical component found within the essential oils present in citrus fruit rinds, including that of yuzu. Although limonene is generally recognized as safe and contributes positively to the aroma and flavor in small doses, its properties change significantly when isolated or highly concentrated. In elevated concentrations, often achieved through the direct use of yuzu essential oil, limonene can transition from being a pleasant aromatic agent to an irritant. This highlights a key distinction between using the whole, diluted fruit zest and using extracted, potent compounds for purposes like aromatherapy or homemade preparations, where dilution guidelines must be strictly followed.

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