Abstract
Recently, research efforts have been directed toward medicinal plants and their extracts, as important sources of natural antioxidant. Lots of biologically active compounds are responsible for the antioxidant effects of yarrow - Achillea millefilium L. extracts. The aim of our study was to determine which of the process parameters of pressure enhanced solvent extraction of Millefolii herba is significant for its efficiency and weather there are interactions between the examined parameters. Compression time, decompression time and the number of cycles were identified as independent variables, while the content of total flavonoids, tannins and total polyphenols were selected as dependent variables. For obtaining the extract of M. herba, rich in antioxidative ingredients, compression time should be set on its higher level (2.0 min), decompression time on its lower level (1.30 min) and the number of cycles on its higher level (99).
Highlights
Research efforts have been directed toward medicinal plants and their extracts, as important sources of natural antioxidant
Increasing the number of cycles led to an increase in the value of dry residue
When considering active principle content, it may be noted that TP1 and TP0 have the biggest influence on total flavonoids (TF), while CL on TN and PY
Summary
Research efforts have been directed toward medicinal plants and their extracts, as important sources of natural antioxidant. Owing to increased safety concerns about synthetic antioxidants and their possible involvement in chronic diseases, research efforts have been directed toward natural antioxidants [2] Medicinal plants and their extracts constitute one of the most important targets to search for new sources of natural antioxidants for consideration as components for functional ingredients and nutraceuticals, as well as feasible and natural alternatives to synthetic antioxidants in the food industry. Aerial part of A. millefolium contains terpenes, alkaloids and bases, tannins, coumarins, saponins, sterols, vitamins, amino and fatty acids [6,7] Phenolic compounds, such as flavonoids and phenolcarbonic acids, constitute one of the most important groups of pharmacologically active principles in yarrow. The airdried aerial parts of A. millefolium were milled at room temperature and sieved using a lab sieve with 355 μm mesh
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