Journal
BEVERAGES
Volume 7, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/beverages7030067
Keywords
antimicrobial activity; essential oils; nanoemulsion; Tasmannia lanceolata; Backhousia citriodora; Syzygium anisatum; Zygosaccharomyces bailii; apple juice
Categories
Funding
- Public Authority for Applied Education and Training, Kuwait
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Australia
Ask authors/readers for more resources
The study found that natural essential oils can effectively inhibit weak-acid resistant yeast in apple juice, extending its shelf life and potentially playing a role in beverage production.
The anti-yeast activity of oil-in-water encapsulated nanoemulsion containing individual or a combination of the three essential oils of Tasmanian pepper leaf (Tasmannia lanceolata), lemon myrtle (Backhousia citriodora), and anise myrtle (Syzygium anisatum) against weak-acid resistant Zygosaccharomyces bailii in clear apple juice was investigated. The effectiveness of the shelf-life extension of Z. bailii-spiked (1 x 10(3) CFU/mL) clear apple juice was evaluated and compared between natural (essential oils) and synthetic (sodium benzoate) antimicrobial agents. Essential oils showed an immediate reduction in the Z. bailii cell population at day-0 and exerted a fungicidal activity at day-4 of storage, with no further noticeable growth at the end of the experiment (day-28). At lower concentrations, Tasmanian pepper leaf oil of 0.0025% had >6 log CFU/mL at day-12 of storage. For lemon myrtle essential oils, the yeast population reached >6 log CFU/mL at day-24 and day-20 for concentrations of 0.02% and 0.01%, respectively. The fungicidal activity of Tasmanian pepper leaf oil reduced from 0.005% to 0.0025% v/v when mixed at a ratio of 1:1 with anise myrtle oil. The results of the present study suggest that these three native Australian herbs have the potential to be used in the beverage industry by controlling Zygosaccharomyces bailii in clear apple juice products.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available