The aim of this research was to demonstrate the effect of the ozonation process (exposure to ozone in gaseous form and rinsing in water saturated with ozone) on selected apple parameters. The scope of the study included: conducting the ozonation process under controlled conditions at a concentration of 1 ppm and exposure times of 1, 5 and 10 min (ozone in gaseous form) and 10, 15 and 30 min (ozonated water), respectively; polyphenols research; determining antiradical activity using ABTS radicals; and determining the influence of the applied method on the volatiles that give rise to odor chemicals (fragrance and aroma). In both cases, measurements were taken 24 hours after the ozonation process. Both exposure to ozone in gaseous form and washing in ozonated water did not adversely affect the appearance of the fruit. The rinsing process in ozonated water did not significantly affect the composition of the compounds responsible for the fruit’s odor. The proposed washing conditions affected the biochemical balance of the fruit. Differences in polyphenol content and antioxidant potential were noted. The mean content of polyphenols expressed as gallic acid equivalent in the control sample was determined to be 15.22 mg/100 g. In comparing the content of polyphenols with the control sample, insignificant changes in their content were noted, except for the sample with the longest ozonation. In the case of fruit washed within 30 minutes, a significant increase by 53% in antioxidant potential was noted. α- Farnesene was identified as the main component established by headspace solid-phase microextraction (HS-SPME) procedure. The proposed ozonation conditions made it possible to keep the volatile compounds influencing the sensory properties of apples unchanged.
Keywords
- apple
- ozone treatment
- antioxidant activity
- polyphenols
- essential oils
- HS-SPME
Screening of lactases suitable for the preparation of low-lactose prebiotic liquid milk and optimisation of their combination Effect of two types of ozone treatments on the quality of apple fruits Prediction of the thermo-physical properties of deep-fat frying plantain chips ( ipekere ) using artificial neural networkEffect of medium composition on cell envelope proteinase production by Lactobacillus plantarum LP69Use of Clerodendrum volubile in wheat bread: impact on antioxidant, proximate, minerals and sensory propertiesThe influence of meteorological conditions during traditional smoking on polycyclic aromatic hydrocarbon content in traditional Polish pork ham Effect of malting process duration on malting losses and quality of wheat malts Effect of infant meal home preparation temperature on surviving of Bacillus cereus sensu lato : A case of Bechar city, AlgeriaAlterations in health-related fatty acids in buffalo milk after processing to traditional dairy products Evolution of antioxidant properties of orange beverage during storage: Effects of time and temperature Sheep’s milk cheeses as a source of bioactive compounds Optimization of compatible solutes for improving survival of freeze-dried Lactobacillus delbrueckii subsp.bulgaricus using Box-Behnken designPhenolic profile and antioxidant activity of the selected edible flowers grown in Poland