
【化】 mandarin oil; mandarine oil
Orange oil, known as "橘子油" (júzi yóu) in Chinese, is a concentrated essential oil extracted from the rind of citrus fruits, primarily oranges (Citrus sinensis). Its chemical composition is dominated by limonene (over 90%), a monoterpene hydrocarbon, along with smaller quantities of α-pinene, myrcene, and aldehydes . The extraction process typically employs cold-pressing or steam distillation methods to preserve volatile aromatic compounds .
As a food additive, orange oil serves dual functions as a flavor enhancer (GB 2760-2024 classification: NAT 033) and natural preservative due to its antimicrobial properties . In industrial applications, it functions as a biodegradable solvent in cleaning products and contributes terpene derivatives to cosmetic formulations through derivatization processes . The U.S. Food and Drug Administration (FDA) recognizes it as generally recognized as safe (GRAS) for specific food contact applications under 21 CFR §172.510 .
Phytochemical analyses from the National Center for Biotechnology Information (NCBI) confirm its antioxidant capacity via oxygen radical absorbance capacity (ORAC) testing, measuring 1,200 µmol TE/g . International standardization occurs through ISO 3140:2022 specifications for citrus oil purity parameters .
“橘子油”一詞有兩種不同層面的解釋,需結合具體語境理解:
基本定義
橘子油是從橘子皮中提取的天然精油,主要通過冷榨、壓榨或蒸餾法制取。其化學成分為壬醛、檸檬烯等,具有果香和脂蠟香氣。
物理性質
用途
主要用于食用香精(如飲料、糖果)、牙膏香精及日用化妝品調香,偶爾用于煙用香精。
在特定語境中,“橘子油”被引申為形容虛僞、不真實的言行。其來源與橘子皮油的特性相關:橘子皮油香氣濃烈,但橘子果肉香味較淡,故以此比喻表面美好而内在虛假的行為或言辭。
使用場景:多用于批評他人表裡不一,例如“他的承諾像橘子油一樣,聞着香卻無實質”。
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