Valorization of Wild Apple (Malus spp.) By-Products as a Source of Essential Fatty Acids, Tocopherols and Phytosterols with Antimicrobial Activity
In: Plants, Jg. 7 (2018-10-01), Heft 4
Online
unknown
Zugriff:
The amplified production of fruit as well as burgeoning demand for plant-made food products have resulted in a sharp increase of waste. Currently, millions of tons of by-products are either being discarded or utilized rather ineffectively. However, these by-products may be processed and further incorporated as functional ingredients in making high-value food products with many physiological and biochemical effects. The chemical analysis of pomace oils using gas chromatography-mass spectrometry (GC/MS) and reversed-phase-liquid chromatography coupled with fluorescence detector (RP-HPLC/FLD) systems led to the identification and quantification of 56 individual lipophilic compounds including unsaturated, polyunsaturated and saturated fatty acids, as well as phytosterols and four homologs of tocopherol. The oils recovered from by-products of Malus spp. (particularly cv. &ldquo
Ola&rdquo
) are rich in fatty acids such as linolenic (57.8%), &alpha
linolenic (54.3%), and oleic (25.5%). The concentration of total tocopherols varied among the Malus species and dessert apples investigated, representing the range of 16.8&ndash
30.9 mg mL&minus
1. The highest content of total tocopherols was found in M. Bernu prieks, followed by M. cv. &ldquo
and M. ×
Soulardii pomace oils. A significantly higher amount of &delta
tocopherol was established in the oil of M. Bernu prieks, indicating that this species could be utilized as a natural and cheap source of bioactive molecules. &beta
Sitosterol was the prevalent compound determined in all tested pomace oils with a percentage distribution of 10.3&ndash
94.5%. The main triterpene identified in the oils was lupeol, which varied in the range of 0.1&ndash
66.3%. A targeted utilization of apple pomace would facilitate management of tons of by-products and benefit the environment and industry.
Titel: |
Valorization of Wild Apple (Malus spp.) By-Products as a Source of Essential Fatty Acids, Tocopherols and Phytosterols with Antimicrobial Activity
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Autor/in / Beteiligte Person: | Püssa, Tõnu ; Klavins, Maris ; Valdovska, Anda ; Drudze, I. ; Radenkovs, Vitalijs ; Juhnevica-Radenkova, Karina ; Kviesis, Jorens |
Link: | |
Zeitschrift: | Plants, Jg. 7 (2018-10-01), Heft 4 |
Veröffentlichung: | MDPI AG, 2018 |
Medientyp: | unknown |
ISSN: | 2223-7747 (print) |
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