Influence of extraction pre-treatments on some phytochemicals and biological activity of Transylvanian cranberries (Vaccinium vitis-idea L.)

Cătunescu, Giorgiana M.; Rotar, Ancuța M.; Pop, Carmen; Diaconeasa, Zorița; Bunghez, Florina; Socaciu, Maria-Ioana; Semeniuc, Cristina Anamaria

doi:10.1016/j.lwt.2018.12.062

Cited by 11 publications

(9 citation statements)

References 39 publications

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“…Not only, therefore, do the results vary, depending how the berries are processed prior to extraction and the type of extraction solvent used [ 86 , 91 ], but also on their variety and the pedo-climatic conditions in which they were cultivated [ 44 , 47 , 48 , 49 , 53 , 86 ]. Additionally, many phenolic compounds from blueberries, anthocyanins included, do not only directly inhibit the growth and survival of bacteria, but they do affect their virulence factor and their antibiotic resistance [ 47 , 51 , 52 ].…”

Section: Resultsmentioning

confidence: 99%

“…Both cranberries and blueberries share a similar anthocyanin profile [ 31 , 44 , 91 , 92 ]. It appears that the monoglycoside anthocyanins (such as: delphinidin-3- O -glucoside, petunidin-3- O -glucoside, cyanidin-3- O -glucoside, malvidin-3- O -glucoside, peonidin-3- O -glucoside), abundant in blueberries, might be the compounds with the highest antibacterial effect against S. Enteritidis and L. monocytogenes [ 44 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

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Anthocyanins in Blueberries Grown in Hot Climate Exert Strong Antioxidant Activity and May Be Effective against Urinary Tract Bacteria

et al. 2020

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Anthocyanins are extensively studied for their health-related properties, including antibacterial activity against urinary tract infections (UTI). Among common fruits, blueberries, with their remarkable antioxidant capacity, are one of the richest sources. Anthocyanin-rich extracts were obtained from four varieties: Snowchaser, Star, Stella Blue and Cristina Blue, grown in the hot climate of Southern Spain. Their total anthocyanins contents (TAC) were determined spectrophotometrically, and the anthocyanin profile by ultra high performance liquid chromatography—tandem mass spectrometer (UHPLC-MS/MS). Their antioxidant activity was assessed by oxygen radical absorbance capacity (ORAC) assay, while antibacterial activity against strains isolated from UTI patients was assessed in vitro, helping to select the varieties with the highest bioactive potential. Star showed the highest TAC and antioxidant activity (1663 ± 159 mg of cyanidin-3-O-glucoside (cy-3-O-glu) equivalents/100 g fresh weight (FW), 6345 ± 601 μmol Trolox equivalents (TE)/100 g FW, respectively), followed by Cristina Blue, Stella Blue and Snowchaser. As far as we know, this is the first time that cyanidin-3-rutinoside has been identified in blueberries. The extracts inhibited all the tested strains, MICs ranging from 0.4 mg/mL (for Stella Blue extract against UTI P. aeruginosa) to 9.5 mg/mL (for all extracts against UTI K. pneumoniae ssp. pneumoniae). This is the first study that assessed in vitro the antibacterial activity of blueberries against Klebsiella pneumoniae, Providencia stuartii and Micrococcus spp. strains isolated from UTI.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Anthocyanins in Blueberries Grown in Hot Climate Exert Strong Antioxidant Activity and May Be Effective against Urinary Tract Bacteria

et al. 2020

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“…Correlational Principal Component Analysis (PCA) was performed on the preliminary data formatted in observations/variables table (Cătunescu et al 2019). Three of the 5 identi ed factors (components) were selected: F1 which had an Eigenvalue of 2.67 and accounted for a variability 53.48%, F2 which had an Eigenvalue of 1.11 and accounted for a variability 22.15%, and F3 which had an Eigenvalue of 0.72 and accounted for a variability 14.45%.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Optimization of moist and oven-dried bacterial cellulose production for functional properties

Bodea

Beteg

Pop

et al. 2021

Preprint

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Bacterial cellulose (BC) is a natural polymer with properties suitable for tissue engineering and possible applications in scaffold production. However, current procedures have limitations in obtaining BC pellicles with the desired structural, physical, and mechanical properties. Thus, this study analyzed the optimal culture conditions of BC membranes and 2 types of processing: draining and oven-drying. The aim was to obtain BC membranes with properties suitable for a wound dressing material. Two studies were carried out. In the preliminary study the medium (100 mL) was inoculated with varying volumes (1; 2; 3; 4; and 5 mL) and incubated statically for different periods (3; 6; 9; 12; and 18 days), using a full factorial experimental design. Thickness, uniformity, weight, and yield were evaluated. In the optimization study, a Box–Behnken design was used. Two independent variables were used: inoculum volume (X1: 1; 3; and 5 mL) and fermentation period (X2: 6; 12; and 18 d) to determine the target response variables: thickness, swelling ratio, drug release, fiber diameter, Tensile strength, and Young's Modulus for both dry and moist BC membranes. The mathematical modelling of the effect of the 2 independent variables was accomplished by response surface methodology (RSM). The obtained models were validated with new experimental values, and confirmed for all tested properties, except Young Modulus of oven-dried BC. Thus, the optimal properties in terms of a scaffold material of the moist BC were obtained with an inoculum volume of 5% (v/v) and 16 d of fermentation. While, for the oven-dried membranes a 4% (v/v) and 14 d of fermentation.

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“…Amongst peonidin derivatives, peonidin 3-O-galactoside was found in relatively high amount (8.73 mg/100mL). Previous studies conducted on cranberry extracts reported glycosylated cyanidins and their derivatives (peonidins) as one of the most prevalent anthocyanins [23,39,40].…”

Section: Anthocyanins Content Of Red Juicesmentioning

confidence: 99%

“…Composition, bioavailability, and antioxidant activity of phytochemicals are significantly influenced by plant processing and other post-harvest technologies [19][20][21][22][23][24]. Thus, these steps should be designed with caution in order to preserve or enhance the quality of products.…”

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confidence: 99%

Anthocyanins, carotenoids and antioxidant activity of coloured commercially available juices

Bunea¹,

Andrei²,

El-Mahdi³

et al. 2019

Studia UBB Chemia

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The phytochemical composition of apple, cranberry, pomegranate, carrot, and beetroot juices was determined in terms of carotenoids, anthocyanins, betalains and ascorbic acid concentration. Antioxidant potential of these beverages was also assessed using the colorimetric DPPH radical scavenging assay. The results showed that pasteurized and unpasteurized carrot and apple juices contain significant amount of β-carotene and cis-βcarotene. High total betalain content was observed in beetroot juice. Major anthocyanins detected in cranberry and pomegranate juices were glycosides of cyanidin, malvidin, and delphinidin. Notable ascorbic acid content and antioxidant potential were observed in unprocessed carrot juices, while beetroot juice exhibited the highest percentage of free radical inhibition.

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Influence of extraction pre-treatments on some phytochemicals and biological activity of Transylvanian cranberries (Vaccinium vitis-idea L.)

Cited by 11 publications

References 39 publications

Anthocyanins in Blueberries Grown in Hot Climate Exert Strong Antioxidant Activity and May Be Effective against Urinary Tract Bacteria

Anthocyanins in Blueberries Grown in Hot Climate Exert Strong Antioxidant Activity and May Be Effective against Urinary Tract Bacteria

Optimization of moist and oven-dried bacterial cellulose production for functional properties

Anthocyanins, carotenoids and antioxidant activity of coloured commercially available juices

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