Bio-active compounds in bee drone larvae after freeze-drying
2023
Rutka, Iveta | Galoburda, Ruta | Galins, Janis | Galins, Ainars
In biological beekeeping, an actual problem is limiting the spread of Varroa mite without using harmful chemicals. Removing bee drone larvae from the hive can significantly reduce the spread of Varroa mite in the bee colony. In recent years, bee drone larvae, as a beekeeping by-product, have been increasingly studied as an alternative protein source, but relatively little research has been done on the vitamins, hormones and other important bioactive compounds found in product, and the available information is often questionable. Drone larvae were freeze-dried to preserve biologically active substances. The aim of the study was to determine the content of vitamins, prohormones and 10-hydroxy-2-decenoic acid (10-HDA) in the samples of bee drone larvae. Drone larvae contained large amounts of water-soluble B-group vitamins, such as thiamine (B1), riboflavin (B2), niacin (B3), choline (B4), and pantothenic acid (B5). Ascorbic acid (C) and prohormones were also found. The 10-hydroxy-2-decenoic acid (10-HDA) was not found in bee drone larvae because the larvae were separated from their cells during collection and not squeezed out in the liquid form thus the admixture of royal jelly in the larval samples was negligible.
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