A food-grade antioxidant production using industrial potato peel by–products
2020
Sepelevs, I. | Zagorska, J. | Galoburda, R.
Currently, industrial potato processing waste recycling and re–use is an important topicin the food industry, but no actual processing facilities could be found at the moment of this study.The main aim of present research was to develop a method that could, potentially, be practicallyapplicable for industrial potato peel waste recycling into encapsulated phenolic compounds (finepowder), with a further approbation as an antioxidant for ground pork meat. Potato peel wasteswere collected from the local potato processing facility, homogenized in the solvent media, andtwo accelerated extraction technologies (microwave assisted (MAE) and ultrasound acceleratedextractions) were applied for the extraction of biologically active compounds and encapsulationwall material. Produced extracts were concentrated (recovered solvent had been collected andreused) and directed for spray-drying. In general, MAE alone showed higher extraction yieldsthan in combinations with ultrasound treatment. Extracts reached maximal biologically activecompound concentrations (and were possessing highest radical scavenging activities) after10 min of MAE treatment. Produced capsules (food grade antioxidant) inhibited ground porkmeat lipid oxidation during the storage study at accelerated oxidation conditions. Acquired resultsform a basis for development of a potato peel industrial scale processing technology.
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