Page 94 - Zbornik_Konf_2019

https://doi.org/10.15414/2019.9788055220703

4 International Scientific Conference Abstracts Book
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LESSER KNOWN FRUIT SPECIES AS A SOURCE OF VALUABLE
BIOACTIVE SUBSTANCES
Tűnde Juríková , Katarína Fatrcová‐Šramková , Marianna Schwarzová 2
1
2
1 Institute for Teacher Training, Faculty of Central European Studies, Constantine the Philosopher
University in Nitra, Slovak Republic; E-mail.: tjurikova@ukf.sk
2 Department of Human Nutrition, Faculty of Agrobiology and Food Resources, Slovak University of
Agriculture in Nitra, Slovak Republic
The lesser known fruit species have been more and more valued as a new source of food.
They can be characterized by high content of bioactive substances, especially polyphenols and
triterpenoids. Due to this fact they have been ranked into a new group of natural functional or
novel food. Moreover, we can also mention nondemanding cultivation, high adaptability into
new conditions of introduction, they have not been suffered from diseases and pests. In the
territory of Slovakia these species can be divided into 4 groups:
a) neglected, forgotten or underutilized species (black mulberry, cherries, European
cranberry, black crowberry, etc.);
b) wild fruit with interest for breeding to increase the content of bioactive substances, size
of fruit (cornelian cherry, rowanberry);
c) another native species in the territory of Slovakia without interest to explore them
(blackthorn);
d) introducted, promising species in the aspect of cultivation and utilization (honeyberry,
chokeberry).
The aim of the study was to compare polyphenolic spectrum and antioxidant activity of
two native – black crowberry (Empetrum nigrum L.), European cranberry (Viburnum opulus
L.) and one introduced species – honeyberry (Lonicera caerulea L.). The dominated
polyphenols were separated and detected by HPLC method, antioxidant activity by DPPH
method.
The results of continual comparative studies on lesser known fruit species (black
crowberry, European cranberry, and honeyberry) in 2016–2018 has proved that honeyberry
represented the valuable source of phenolic acids, especially gallic acid 23.15±1.53, quercetin
14.18±3.88, and rutin 29.18±0.56 µg.g fresh weight. Black crowberry displayed the valuable
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content of gallic acid 23.43±4.33 together with ferrulic acid 89.13±3.9956 µg.g fresh
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weight, European cranberry rutin 26.87±1.38 µg.g fresh weight of fruit. In the same time
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black crowberry showed the highest antioxidant activity 6.65±0.09 (gallic acid mg.g fresh
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weight of fruit). There has been noticed statistically significant differences in antioxidant
activity and individual polyphenols among assayed species (P ˂ 0.05).
The results of the experiment confirmed that three underutilized species – black
crowberry, European cranberry honeyberry has represented a valuable source of polyphenols
displayed high antioxidant activity. Therefore the assayed species can be widely utilized in
food industry and processing as well.
Keywords: lesser known fruit species, bioactive substances, comparative study, polyphenols,
antioxidants.
Acknowledgments
This work was supported by the VEGA 1/0047/19, KEGA 012UKF-4/2019, KEGA-024SPU-4/2018.

|94 4 International Scientific Conference Agrobiodiversity Nutrition, Health and Quality of Human and Bees Life
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September 11–13, 2019