Shade netting on raspberry and blackberries produced from south-east region of North Macedonia: effect on morphological characterization, chemical composition and antioxidant activity

Kostadinovic Velickovska, Sanja and Dimovska, Daniela and Lelova, Zorica and Pljevljakusic, Dejan and Zivkovic, Jelena and Davcev, Zivko and Davcev, Petar and Ilieva, Fidanka (2024) Shade netting on raspberry and blackberries produced from south-east region of North Macedonia: effect on morphological characterization, chemical composition and antioxidant activity. In: 4th International Meeting Agriscience & Practice (ASP 2024), 13 June 2024, Stip, Republic of North Macedonia.

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Abstract

Due to the presence of wide-range phytochemicals, particularly polyphenols, anthocyanins,
proanthocyanidins and organic acids, raspberry and blackberry gained attention as functional
foods or nutraceuticals. However, data on the effect of the shade netting on the morphological
and chemical composition and “in vitro” antioxidant activity are very limited.
This study reports the effect on shade netting on the morphological and chemical composition
(organic acids, sugars, total polyphenols, total and particular anthocyanins, proanthocyanidins)
and “in vitro” antioxidant activity on raspberry and blackberries from the south-east region of
Republic of North Macedonia. HPLC analysis confirmed significant effect on shading nets on the
amount of the most dominant anthocyanin in blackberries. The amount of cyanidin-3-O-glucoside
in blackberry covered with shading nets was significantly higher in comparison to the amount of
the same anthocyanins in uncovered blackberries. The same tendency was observed for cyanidin-
3-O-sophoroside for covered and uncovered raspberries from 2023. However, opposite
relationship was noticed for total anthocyanin content in favor to uncovered blackberry and
raspberry from 2023. From all examined organic acids, the amount of acetic acid was the most
affected in covered raspberries.
The shade netting had significant influence on polyphenolic content (such as high molecular
proanthocyanidins anthocyanins), the amounts of sugars and organic acids as well as the
intensity of color in blackberry and raspberry from the south-east region of the Republic of North
Macedonia. The difference in antioxidant activity was not linked to the effect of shading nets but,
on variation of particular phenolic compounds presented in examined berry fruits.

Item Type:	Conference or Workshop Item (Poster)
Subjects:	Agricultural Sciences > Agriculture, forestry, and fisheries Natural sciences > Chemical sciences
Divisions:	Faculty of Agriculture
Depositing User:	Sanja Kostadinovik
Date Deposited:	29 Jul 2024 07:33
Last Modified:	29 Jul 2024 07:33
URI:	https://eprints.ugd.edu.mk/id/eprint/34466

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