Evaluation of Antioxidant, Antimicrobial and Potential Food Preserving Properties of <i>Rubus Discolor</i> (Rosaceae) Fruit Extracts

Veličković, Ivona; Živković, Jelena; Stojković, Dejan; Sokóvić, Marina; Marin, Petar D.; Grujić, Slavica

doi:10.1177/1934578x211009692

Cited by 5 publications

(5 citation statements)

References 33 publications

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“…The acetone extracts exhibited the most promising activity, with IC 50 values of 120.3 and 258.4 μg/mL for Belgrado and Cer, respectively. However, these values are about five times higher than those found for the samples analyzed in the present study [ 47 ]. At the same time, the raspberry extracts investigated in this study exhibited a stronger ferric-reducing power than that found by Chwil et al [ 48 ], who investigated the antioxidant potential of the extracts from fruits of three cultivars, such as R. idaeus ‘Glen Ample’, ‘Laszka’, and ‘Radziejowa’ (cultivated in Poland); they found a reducing power similar to the cultivar R. idaeus ‘Heritage’, R. innominatus , and R. niveus , but it was lower than R. caucasicus × Chester , R. cyri , and R. insularis [ 49 , 50 ].…”

Section: Resultscontrasting

confidence: 86%

Chemical Profile and Bioactivity of Rubus idaeus L. Fruits Grown in Conventional and Aeroponic Systems

La Torre,

Loizzo,

Frattaruolo

et al. 2024

Plants

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Raspberry (Rubus idaeus L.) is a fruit of great interest due to its aroma, nutritional properties, and the presence of many bioactive compounds. However, differences among cultivation systems can affect its composition and, consequently, its potential bioactivity. Herein, for the first time, raspberries grown in an aeroponic system were investigated for their chemical profile and antioxidant and anti-inflammatory activity, as well as their enzyme (α-glucosidase and pancreatic lipase) inhibitory properties in comparison to wild and conventionally cultivated fruits. High-performance liquid chromatography coupled with diode array detection (HPLC-DAD) analyses revealed the presence of gallic acid, caffeic acid, chlorogenic acid, p-coumaric acid, ferulic acid, rutin, and catechin in all the samples. The extracts exhibited in vitro anti-inflammatory activity (inhibition of nitric oxide production) regardless of the cultivation method. Of particular interest is the ability of raspberries to inhibit pancreatic lipase. With the exception of the β-carotene bleaching test, the raspberries grown in conventional and aeroponic systems were more active in terms of antioxidants than wild fruits, as evidenced by the ABTS (IC50 in the range 1.6–3.4 μg/mL), DPPH (IC50 in the range 8.9–28.3 μg/mL), and FRAP tests (24.6–44.9 μM Fe(II)/g). The raspberries from aeroponic cultivation were generally able to exert the same bioactivity as those obtained from both conventionally cultivated and wild fruits, supporting the consideration that in the future, this technology could reshape agriculture by mitigating resource constraints, fostering sustainable practices and increasing yields.

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Section: Resultscontrasting

confidence: 86%

Chemical Profile and Bioactivity of Rubus idaeus L. Fruits Grown in Conventional and Aeroponic Systems

La Torre,

Loizzo,

Frattaruolo

et al. 2024

Plants

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“…has been already described. In particular, the anti-listerial effect of ethanolic extract from R. discolor was demonstrated in vitro and in yoghurt by Veličković et al 11 , while the blackberry juice from R. fruticosus showed an inhibiting effect on L. monocytogenes , Salmonella Typhimurium and E. coli O157:H7 in milk and in BHI medium 15 .…”

Section: Resultsmentioning

confidence: 97%

“…Fruits, leaves, and young shoots of these species have been used in traditional medicine for several purposes 9 . Their phenolic extracts (PE) exhibit relevant antioxidant activity 10 , being rich in phenolic acids, flavonoids (anthocyanins, flavonols and tannins), carotenoids and organic acids 11 . Many of the molecules responsible for the antioxidant activity can inhibit the growth of microbial species.…”

mentioning

confidence: 99%

“…Many of the molecules responsible for the antioxidant activity can inhibit the growth of microbial species. Veličković et al 11 found promising antimicrobial activity (especially against Listeria monocytogenes ) in different aqueous and acetone extracts of Rubus discolor . Bioactive phenolics from blackberry pomace have been proposed to reduce Salmonella contamination in farm animals 12 , 13 .…”

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confidence: 99%

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Effects of Rubus fruticosus and Juniperus oxycedrus derivatives on culturability and viability of Listeria monocytogenes

Barbieri

Montanari

Šimat

et al. 2022

Sci Rep

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The consumers’ demand for safe foods without chemical additives increased the research for green solutions, based on natural antimicrobials. Plants can be an important source of bioactive compounds able to prevent the development of foodborne pathogens and spoilage microflora. This paper aimed to characterize phenolic extracts (PEs) and essential oils (EOs) obtained from Mediterranean Rubus fruticosus leaves and Juniperus oxycedrus needles and to evaluate their antimicrobial effects against Listeria monocytogenes Scott A. The growth dynamics with sub-lethal concentrations of plant derivatives were modeled and flow cytometry was used to better evidence the effect on cell viability and culturability. The results showed that these plant derivatives affected the growth of L. monocytogenes, increasing lag phase (about 40 h in the presence of PEs vs. 8 h in the control) and decreasing the final cell load of at least 1 log cycle with respect to the control. R. fruticosus EO was the most effective, determining an initial decrease of cell counts of about 6 log cycles, followed by a restart of growth after 10 h, with rate similar to the control (0.08 with R. fruticosus EO vs. 0.09 ((log CFU/ml)/h in the control) but significantly lower final cell load (7.33 vs. 8.92 log CFU/ml). According to flow cytometry, only R. fruticosus EO induced a relevant increase of dead cells, while the other plant derivatives determined different extent of sub-lethal cell injury. The discrepancy observed in some cases between viability and culturability could indicate the presence of cells not able to grow in culture media, whose fate needs to be further investigated to assess their potential recovery, thus bringing to an overestimation of the antimicrobial effect of these substances. This research contributed to increase the knowledge of these underused raw materials such as blackberry leaves and juniper needles that can be exploited in food and other industries.

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“…The relationship between the chemical contents and antibacterial activity was studied by Pearson's correlation coefficients (r) using MANOVA. Values of r ≤ 0.35 represent weak correlation, r = 0.36 to 0.67 represent moderate correlation, and r = 0.68 to 1.0 represent strong correlation 11.…”

mentioning

confidence: 99%

Tissue and Growth Specific Chemical Profiles and Antimicrobial Activity of Libanotis buchtormensis (Fisch.) DC Extracts

Wang

Geng

Qiu

et al. 2021

Natural Product Communications

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Libanotis buchtormensis (Fisch.) DC. is a traditional Chinese medicinal herb used for the treatment of rheumatism, articular pain, and symptoms of the common cold. To evaluate the possible medicinal value of the aerial parts of L. buchtormensis, the chemical composition and antibacterial activity were assessed on a tissue and growth specific basis. Results based on high performance liquid chromatography (HPLC) showed that the samples were divided into two main clusters, one associated with roots and the other associated with the aerial parts. Analysis of the bioactive chemical contents revealed that coumarin was the most abundant compound in leaves (0.53 to 0.82%), while osthole and isoimperatorin exhibited relatively high concentrations in roots. Two-year growth samples, which correspond with the harvest period of L. buchtormensis, contained the highest amounts of total coumarin, osthole, and isoimperatorin. Broth microdilution tests showed that Gram-positive bacterial strains ( Staphylococcus aureus, S. epidermidis and Streptococcus agalactiae) were more sensitive to L. buchtormensis extracts than the Gram-negative bacterial strain ( Escherichia coli). Staphylococcus aureus and S. epidermidis were more sensitive to the extracts, exhibiting significant correlation with osthole and isoimperatorin contents. Comparative analysis of the chemical profiles and antibacterial activity revealed significant differences between the root and the aerial parts, which implied that the clinical application of the aerial parts needed further study. In addition, the aerial parts could serve as a material source for osthole, having comparable content to that of the root.

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Evaluation of Antioxidant, Antimicrobial and Potential Food Preserving Properties of Rubus Discolor (Rosaceae) Fruit Extracts

Cited by 5 publications

References 33 publications

Chemical Profile and Bioactivity of Rubus idaeus L. Fruits Grown in Conventional and Aeroponic Systems

Chemical Profile and Bioactivity of Rubus idaeus L. Fruits Grown in Conventional and Aeroponic Systems

Effects of Rubus fruticosus and Juniperus oxycedrus derivatives on culturability and viability of Listeria monocytogenes

Tissue and Growth Specific Chemical Profiles and Antimicrobial Activity of Libanotis buchtormensis (Fisch.) DC Extracts

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