Investigating the methods for obtaining extracts from two types of herbal substances from elderberry, Sambucus nigra L

Kuzmanoska, Matea and Bogevski, Krume and Maksimova, Viktorija (2024) Investigating the methods for obtaining extracts from two types of herbal substances from elderberry, Sambucus nigra L. In: 27th Congress of SCTM, 25-28 Sept 2024, Ohrid.

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Abstract

Besides the most abundant flavonols (quercetin and apigenin) in the flowers,
sambunigrin is mostly represented in the leaves. Some triterpenes, sterols, amino
acids (glutamic acid, aspartic acid, and alanine), as well as lectins, have also been
reported in the leaves and branches of elderberry, Sambucus nigra L1.
We investigated two different methods of extraction: Soxhlet extraction
(SOX) and Ultrasound-Assisted Extraction (UAE), against the conventional
method for obtaining herbal infusions from two types of herbal substances:
elderberry flower and elderberry herb (leaf with branches). SOX and UAE were
performed with ethanol, while infusions were prepared with water. We noticed an
important difference in the extraction yields from different herbal parts. Water is
an ideal extraction solvent for elderberry flowers, but it has a very weak potential
for extracting bioactive compounds from leaves and barks. Ethanolic Soxhlet
extraction, performed as a 4-hour continuous extraction at a temperature of 60-65
ºC, was the most potent method for this aim. SOX extract absorbances measured
at 550 nm were almost 10 times higher for the herb than for the flowers, with an A
= 1.032 and 0.136, respectively.
In conclusion, although elderberry flowers are commonly known for their
phyto-therapeutic properties, these preliminary findings suggest that there are
different groups of hydrophobic bioactive substances represented in the leaves and
barks of elderberry. These parts, traditionally used in the treatment of skin burns
or wounds, should be analyzed in detail so their benefits can be fully realized.

Item Type:	Conference or Workshop Item (Poster)
Subjects:	Natural sciences > Chemical sciences Medical and Health Sciences > Other medical sciences
Divisions:	Faculty of Medical Science
Depositing User:	Viktorija Maksimova
Date Deposited:	11 Dec 2024 09:47
Last Modified:	11 Dec 2024 09:47
URI:	https://eprints.ugd.edu.mk/id/eprint/35206

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