Evaluation of bioactive compounds and antioxidant capacity of edible feijoa (Acca sellowiana (O. Berg) Burret) flower extracts

Montoro, Paola; Serreli, Gabriele; Gil, Katarzyna Angelika; D’Urso, Gilda; Kowalczyk, Adam; Tuberoso, Carlo Ignazio Giovanni

doi:10.1007/s13197-020-04239-2

Cited by 23 publications

(28 citation statements)

References 32 publications

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“…The identification and quantification of phenolic compounds in the myrtle berry extract was performed by HPLC–DAD analysis, as described by Montoro et al [ 29 ]. A 1260 Infinity II HPLC system (Agilent Technologies, Cernusco sul Naviglio, Milan, Italy) with a G7111A pump, a G7129A autosampler, and a G4212B photodiode array detector was used.…”

Section: Methodsmentioning

confidence: 99%

Liposomal Formulations to Improve Antioxidant Power of Myrtle Berry Extract for Potential Skin Application

et al. 2022

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Many substances in plant extracts are known for their biological activities. These substances act in different ways, exerting overall protective effects against many diseases, especially skin disorders. However, plant extracts’ health benefits are often limited by low bioavailability. To overcome these limitations, drug delivery systems can be employed. In this study, we evaluated the antioxidant power of an ethanolic extract from Myrtus communis L. (myrtle) berries through colorimetric tests (DPPH and FRAP). The antioxidant activity was also verified by using fibroblast cell culture through cellular Reactive Oxygen Species (ROS) levels measurements. Moreover, the myrtle extract was formulated in phospholipid vesicles to improve its bioavailability and applicability. Myrtle liposomes were characterized by size, surface charge, storage stability, and entrapment efficiency; visualized by using cryo-TEM images; and assayed for cytocompatibility and anti-ROS activity. Our results suggest that myrtle liposomes were cytocompatible and improved the extract’s antioxidant power in fibroblasts, suggesting a potential skin application for these formulations and confirming that nanotechnologies could be a valid tool to enhance plant extracts’ potentialities.

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Section: Methodsmentioning

confidence: 99%

Liposomal Formulations to Improve Antioxidant Power of Myrtle Berry Extract for Potential Skin Application

et al. 2022

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“…The impact of drying temperature on moringa antioxidant activity was calculated as a percentage decrease in DPPH (2, 2-diphenyl-1-picrylhydrazyl) activity (Equation 20). The radical scavenging activity of DPPH was measured using the technique reported by (Montoro et al, 2020).…”

Section: Antioxidant Activitymentioning

confidence: 99%

Meta analysis on color, total flavonoids, antioxidants, frictional, mechanical, and cutting force of moringa pods

Golla

Kumar

Chandrasekar

et al. 2022

J Food Process Engineering

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The color, total flavonoids, antioxidants, frictional and mechanical properties (bending stress, hardness, puncture force, peak cutting force) and cutting power requirement of moringa pod was studied and reported. Drying curves exhibited the falling rate drying characteristics with drying rate constant (k) (À1.18 Â 10 7 -.00571 m À1 ) and effective moisture diffusivities (1.500 Â 10 À6 -2.817Â 10 À8 m 2 s À1 ). The Page model with high R 2 (.997-.8282) and low χ 2 value (.00119-.000927) shows the best fit on drying curves. The L*, a*, b* and total difference in color values varied from 47.05 to 32.5; À9.89 to 6.41; 35.76-21.07; and .07-21.07, respectively. The chlorophyll content (.353-.264 mg/g dm) and the total flavonoids (1.3023-.1050 mg QE/g dm) were recorded. The total phenolics (5.4-21.739 mg GAE/g dm) showed an increasing trend whereas the antioxidant activity (31.5102-20.922%) decreased with increasing drying temperature. The bending stress, hardness, and puncture force ranged from 6514.38 to 1189.33 N/mm 2 ; from 14.707 to 225.16 N; from 267.625 to 25.364 N. The peak cutting forces; and power requirement for cutting on the horizontal and longitudinal direction of moringa pods were 94. 67-27.27 N and 179.95-73 N; and .249-.704 W and .434-1.124 W; respectively. The SEM analysis of moringa pods substantiated the variations in mechanical properties through microstructural changes. The results indicated that aspect ratio significantly affected the drying characteristics, frictional, and mechanical properties of moringa pods. Therefore, the aspect ratio can be considered while designing cutting tools, conveying, and processing equipment. Practical ApplicationsMoringa pods are used as a vegetable in curries, soups, and cuisines in significant parts of Asia and Africa. It has good nutritional characteristics and a very tempting flavor and aroma. However, the processing and value addition of moringa lack owing to primary processing tools and value addition machines because of the non-existence of frictional, mechanical properties, and cutting force data concerning size, that is, aspect ratio and moisture content. The study's findings can help design and develop

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“…(Weixing et al, 2017). An increased number of studies have focused on polyphenols in flower extracts (Chensom et al, 2019;Kalemba-Drożdż and Cierniak, 2019;Moliner et al, 2019;Pires et al, 2019;Demasi et al, 2020;Montoro et al, 2020), a wide group of non-nutritional plant secondary metabolites that possess several beneficial properties and exert a strong antioxidant activity, scavenging reactive oxygen species (Del Rio et al, 2013;Durazzo et al, 2019). Considering the health benefits provided by polyphenols and antioxidants, increasing the knowledge of their content in unconventional matrixes can be a new challenge (D'Angiolillo et al, 2018;Durazzo et al, 2019), despite the content of single compounds often being in traces or lower than 1 mg • 100 g −1 of fresh weight (FW), whatever the food considered (Pérez-Jiménez et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Exploring wild edible flowers as a source of bioactive compounds: New perspectives in horticulture

Demasi

Caser

Donno

et al. 2021

Folia Horticulturae

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The increasing interest in healthy and natural foods has raised the attention towards uncommon or unexplored ingredients, such as edible flowers. These products are proven to be a rich source of bioactive compounds, for example, vitamins or polyphenols that play an important role in health promotion and disease prevention. However, plant species with edible flowers are numerous and most of them still need to be studied with this aim. The high species richness of North-Western Italy provides interesting perspectives in the use of wild edible flowers, which are currently underutilized, but can be a valuable food source or food supplement for healthy diets. In this framework, the phytochemical composition of 22 wild edible flowers was analysed and compared with that of four cultivated species (Borago officinalis L., Calendula officinalis L., Tagetes patula L. and Tropaeolum majus L.) to evaluate their potentiality as sources of bioactive compounds. The total polyphenol content (TPC) and antioxidant activity of the fresh flowers were assessed, together with their phenolic profiles and vitamin C content, through spectrophotometric and chromatographic analyses. The evaluated parameters varied widely among species, with Paeonia officinalis L. and Rosa pendulina L. showing the highest values of polyphenols (1,930 mg gallic acid equivalents (GAE) · 100 g−1 and 1,774 mg GAE · 100 g−1, respectively), followed by Rosa canina L. (1,397 mg GAE · 100 g−1) and Geranium sylvaticum L. (1,268 mg GAE · 100 g−1). The same species also showed the highest antioxidant activity, measured with three different assays [ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis-3-ethylbenzthiazoline-6-sulfonic acid (ABTS)]. The phenolic profile differed among the studied species, with Dianthus pavonius Tausch and R. pendulina having the highest sum of detected polyphenols (2,522 mg · 100 g−1 and 2,366 mg · 100 g−1, respectively). Vitamin C was identified in all but two flowers (Allium ursinum L. and B. officinalis) and Primula veris L. had the highest amount (45 mg · 100 g−1). The study showed that wild edible flowers outperformed the cultivated species, except for T. majus, providing new insights for the use of wild edible flowers as sources of bioactive compounds.

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Evaluation of bioactive compounds and antioxidant capacity of edible feijoa (Acca sellowiana (O. Berg) Burret) flower extracts

Cited by 23 publications

References 32 publications

Liposomal Formulations to Improve Antioxidant Power of Myrtle Berry Extract for Potential Skin Application

Liposomal Formulations to Improve Antioxidant Power of Myrtle Berry Extract for Potential Skin Application

Meta analysis on color, total flavonoids, antioxidants, frictional, mechanical, and cutting force of moringa pods

Exploring wild edible flowers as a source of bioactive compounds: New perspectives in horticulture

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