期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 137, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2020.110361
关键词
Litsea cubeba essential oil; Nanoemulsions; Stability; Antibacterial activity; Antioxidant activity
资金
- National Key R&D Program of China [2019YFD0901602]
- National Natural Science Foundation of China [31772050, 32072290]
This study successfully formulated highly stable and water-dispersible litsea cubeba essential oil nanoemulsions using ultrasonic emulsification, medium-chain triacylglycerol (MCT) and phosphate-buffered saline (PBS). The nanoemulsions showed improved water solubility, stability, and bioactivities (antibacterial, antioxidant and antibiofilm properties) after emulsification, making them a potential novel food preservative.
Essential oils have attracted increasing attentions due to their broad-spectrum antimicrobial activities and generally recognized as safe (GRAS) regulatory status. However, their low-solubility in water and reduced effectiveness in food matrices limit the commercial application in food industry. In this study, we used ultrasonic emulsification, medium-chain triacylglycerol (MCT) and phosphate-buffered saline (PBS) to formulate a highly stable and water-dispersible litsea cubeba essential oil (LCEO) nanoemulsions. After emulsification, a minimizing droplet size of LCEO nanoemulsions was achieved at approximately 100 nm in diameter, resulting in an increase in the water solubility and better stability at 4 degrees C and 25 degrees C. Furthermore, the bioactivities (antibacterial, antioxidant and antibiofilm properties) of LCEO nanoemulsions were greatly improved after emulsification, suggesting that nano-emulsification is beneficial for the value development of various essential oils and the LCEO nanoemulsions could be used as a novel food preservative for controlling bacterial growth and preventing oxidative deterioration in foods.
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