scholarly journals Walnut (J. regia) Agro-Residues as a Rich Source of Phenolic Compounds

Biology ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 535
Author(s):  
Aljaz Medic ◽  
Jerneja Jakopic ◽  
Anita Solar ◽  
Metka Hudina ◽  
Robert Veberic
Keyword(s):  
Phenolic Compounds ◽  
Juglans Regia ◽  
Rich Source ◽  
Phenolic Contents ◽  
Persian Walnut ◽  
Phenolic Profiles ◽  
Hydroxybenzoic Acids ◽  
First Time ◽  
By Products ◽  
Agro Residues

The present study was designed to identify and quantify the major phenolic compounds (phenolics) in the inner and outer husks, buds and bark of the Persian walnut, Juglans regia L. A comparison across six different cultivars grown in Slovenia was also carried out: ‘Fernor’, ‘Fernette’, ‘Franquette’, ‘Sava’, ‘Krka’ and ‘Rubina’. A total of 83 compounds were identified, which included 25 naphthoquinones, 15 hydroxycinnamic acids, 8 hydroxybenzoic acids, 13 flavanols, 2 flavones, 1 flavanone and 19 flavonols. For the first time, 38 phenolics in the husks, 57 phenolics in the buds and 29 phenolics in the bark were presented in J. regia within this study. Naphthoquinones were the major phenolics determined, approximately 75% of all analysed phenolics in the inner husk, 85% in the outer husk, 50% in buds and 80% in bark. The highest content of phenolics was found in the walnut buds, followed by the bark, the inner husk and the outer husk. On the basis of these high phenolic contents, walnut husks, buds and bark represented valuable by-products of the walnut tree. These data also show origin-related phenolic contents across the cultivars, and thus these phenolic profiles might serve to define the origins of different walnut cultivars.

scholarly journals Phenolic profiles of the endemic species Astragalus palibinii Polozhij

2021 ◽  
Vol 38 ◽  
pp. 00063
Author(s):  
Olga Kotsupiy ◽  
Tatyana Shemetova
Keyword(s):  
Phenolic Compounds ◽  
Endemic Species ◽  
Rare Species ◽  
Hydroxycinnamic Acid ◽  
Plant Leaves ◽  
Cinnamic Acids ◽  
Phenolic Profiles ◽  
Hydroxybenzoic Acids ◽  
Ethanol Extracts ◽  
First Time

For the first time, the composition and content of phenolic compounds (PC) of plant leaves of an endemic rare species of the Xiphidium Bunge section of the genus Astragalus L. of Siberia – Astragalus palibinii Polozhij was studied by HPLC. 11 compounds of phenolic nature were identified in water-ethanol extracts of A. palibinii leaves: gallic, p-hydroxybenzoic, chlorogenic, caffeic, ferulic, trans-ferulic, cinnamic acids, isoquercitrin, rutin, isoramnetin-3-O-rutinoside and L-epicatechin. The composition of PC in the leaves of plants of three cenopopulations A. palibinii from Khakassia is the same, with the exception of one hydroxycinnamic acid in trace amounts. The content (mg per 100 g DW) of flavonol glycosides in the leaves of A. palibinii plants varies in the range of 0.442–0.907, the content of hydroxycinnamic and hydroxybenzoic acids in the range of 98.5–109.7 and 32.5–83.9, respectively. The quantitative profiles of all the studied groups of PC are characterized by significant variability in the content of individual components. The variability of the content of hydroxycinnamic acids, flavonoids and hydroxybenzoic acids was determined as very low, medium and increased, respectively.

scholarly journals Identification and Quantification of Naphthoquinones and Other Phenolic Compounds in Leaves, Petioles, Bark, Roots, and Buds of Juglans regia L., Using HPLC-MS/MS

Horticulturae ◽  
2021 ◽  
Vol 7 (9) ◽  
pp. 326
Author(s):  
Aljaz Medic ◽  
Tilen Zamljen ◽  
Metka Hudina ◽  
Robert Veberic
Keyword(s):  
Phenolic Compounds ◽  
Juglans Regia ◽  
Hydroxycinnamic Acids ◽  
Main Root ◽  
Valuable Source ◽  
Phenolic Group ◽  
Hydroxybenzoic Acids ◽  
Common Walnut ◽  
Agro Residues ◽  
Identification And Quantification

The present study was designed to identify and quantify the major phenolic compounds in different Juglans regia L. (common walnut) tissues (leaves, petioles, bark, roots, buds), to define the compositions and contents of phenolic compounds between these tissues. A total of 91 individual phenolic compounds were identified and quantified, which comprised 8 hydroxycinnamic acids, 28 hydroxybenzoic acids, 11 flavanols, 20 flavonols, 22 napthoquinones, and 2 coumarins. Naphthoquinones were the major phenolic group in leaves, petioles, bark, and buds, as >60% of those identified, while hydroxybenzoic acids were the major phenolic group in side roots, as ~50% of those identified. The highest content of phenolic compounds was in the J. regia main root, followed by side roots and buds, leaves, and 1-year-old bark; the lowest content was in petioles and 2-year-old bark. Leaves, roots, and buds of J. regia represent a valuable source of these agro-residues.

scholarly journals Simultaneous Quantification of Diarylheptanoids and Phenolic Compounds in Juglans mandshurica Maxim. by UPLC–TQ-MS

Separations ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 132
Author(s):  
Hong Yang ◽  
Li-Bo Wang ◽  
Ya-Ping Guo ◽  
Ya-Li Wang ◽  
Xiao-Xiang Chen ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Phenolic Compounds ◽  
Juglans Regia ◽  
Folk Medicine ◽  
Total Content ◽  
Antitumor Activities ◽  
Juglans Mandshurica ◽  
Intrinsic Quality ◽  
First Time

The immature epicarps of Juglans mandshurica and Juglans regia have been used as folk medicine for the treatment of cancer in China. Other parts of the J.mandshurica plant, including leaves, branches, barks, and stems, have reported antitumor activities. We previously found that various diarylheptanoids and phenolic compounds isolated from J. mandshurica epicarps show significant antitumor activities. However, there are no reports of quantitative analysis of diarylheptanoids and phenolic compounds of J. mandshurica. In this study, a validated quantitative method, based on ultraperformance liquid chromatography coupled with triple-quadrupole tandem mass spectrometry, was employed to determine the contents of eight diarylheptanoids and seven phenolic compounds in the epicarps of J. mandshurica during different growth periods, in different parts of the plant, and in the epicarps of two Juglans species. The most successful J. mandshurica epicarp harvesting time fell between Day 12 and Day 27. The leaves of J. mandshurica showed potential for medical use as they had the highest content of the 15 compounds (3.399 ± 0.013 mg/g). We showed for the first time that the total content of diarylheptanoids in J. mandshurica is higher than that in J. regia, though, conversely, J. regia has higher contents of phenolic compounds. The method developed in this study is practical and simple and can be applied for quantitative analysis for evaluating the intrinsic quality of J. mandshurica.

scholarly journals THE COMPOSITION AND CONTENT OF PHENOLIC COMPOUNDS IN THE LEAVES OF A POTENTIALLY INVA-SIVE SPECIES PHYSOCARPUS OPULIFOLIUS (L.) MAXIM. AND ITS ORNAMENTAL CULTIVARS

2020 ◽  
pp. 149-155
Author(s):  
Anastasiya Petrovna Belanova ◽  
Vera Andreyevna Kostikova ◽  
Galina Ivanovna Vysochina
Keyword(s):  
Invasive Species ◽  
Phenolic Compounds ◽  
High Performance ◽  
Global Scale ◽  
Biologically Active ◽  
Alien Plant ◽  
Resource Potential ◽  
Phenolic Profiles ◽  
Physocarpus Opulifolius ◽  
First Time

The expansion of alien plant species in natural communities is now taking a global scale. Since most invasive plants have economically valuable properties, many researchers agree that these plants must be used as new sources of biological resources. The composition and content of biologically active compounds were studied in the leaves of potentially invasive species of Novosibirsk – Physocarpus opulifolius (L.) Maxim. and its ornamental cultivars Ph. opulifolius ‘Diabolo’, Ph. opulifolius ‘Luteus’ by the method of High-Performance Liquid Chromatography. For the first time an analysis of phenolic profiles of introduced, self-sown and cultivated Ph. opulifolius plants has been performed. Presence of 22 phenolic compounds represented by several groups of substances with predominating flavanols (hyperoside, rutin, astragalin and quercetin) has been established. Avicularin has been only revealed in the leaves of cultivars. The sum of identified flavonols greatly varies in different samples, the highest content is in the cultivar Ph. opulifolius ‘Diabolo’ (14.68 mg/g) and self-sown plants of Ph. opulifolius (14.22 mg/g). The content of the sum of identified flavons (vitexin, isovitexin, baicalin) and phenolic acid (сhlorogenic and caffeic acids) is almost the same in all Ph. opulifolius samples under study. The data obtained will allow to widen the idea of the resource potential of the aggressive invasive species and its ornamental cultivars in the secondary areal.

scholarly journals Digestive Stability and Bioaccessibility of Antioxidants in Prickly Pear Fruits from the Canary Islands: Healthy Foods and Ingredients

Antioxidants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 164 ◽  
Author(s):  
Andrea Gómez-Maqueo ◽  
Marilena Antunes-Ricardo ◽  
Jorge Welti-Chanes ◽  
M. Pilar Cano
Keyword(s):  
Phenolic Compounds ◽  
Canary Islands ◽  
Prickly Pear ◽  
Healthy Foods ◽  
Food Matrix ◽  
Potential Health ◽  
Phenolic Profile ◽  
Phenolic Profiles ◽  
By Products

Although prickly pear fruits have become an important part of the Canary diet, their native varieties are yet to be characterized in terms of betalains and phenolic compounds. To exert potential health benefits, these antioxidants must be released from the food matrix and be stable in the gastrointestinal tract. Our aim was to characterize the betalain and phenolic profile of four prickly pear varieties from the Canary Islands (Spain) and determine their digestive stability and bioaccessibility via in vitro gastrointestinal digestion. Digestive studies were performed considering the (i) importance of the edible fraction (pulps) and (ii) potential of fruit peels as by-products to obtain healthy ingredients. Betalains and phenolic profiles were analyzed by HPLC-DAD-ESI/MS and HPLC-DAD-MS/QTOF. Pulps in Colorada and Fresa varieties presented high indicaxanthin and betanin content, respectively. Despite low pH in the gastric phase, betalains were stable to reach the intestinal phase, although indicaxanthin presented a higher bioaccessibility. Blanco Buenavista peels contained a distinct flavonoid profile including a new isorhamnetin-hexosyl-rhamnoside. Phenolic compounds were abundant and highly bioaccessible in fruit peels. These findings suggest that prickly pear pulps are rich in bioaccessible betalains; and that their peels could be proposed as potential by-products to obtain sustainable healthy ingredients.

scholarly journals Phenolic Compounds and Antioxidant Activity of Juices from Ten Iranian Pomegranate Cultivars Depend on Extraction

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Hamidreza Akhavan ◽  
Mohsen Barzegar ◽  
Helmut Weidlich ◽  
Benno F. Zimmermann
Keyword(s):  
Phenolic Compounds ◽  
Extraction Method ◽  
Phenolic Content ◽  
Antioxidant Activities ◽  
Processing Method ◽  
Total Phenolic ◽  
Phenolic Contents ◽  
Pomegranate Fruit ◽  
First Time ◽  
Pomegranate Arils

Phenolic compounds and antioxidant activities of ten juices from arils and whole pomegranate cultivars grown in Iran were studied. Phenolic contents and antioxidant activities of juices from whole pomegranate fruit were significantly higher than juices from pomegranate arils, but the variety has a greater influence than the processing method. The main phenolics in the studied juices were punicalagin A (5.40–285 mg/L), punicalagin B (25.9–884 mg/L), and ellagic acid (17.4–928 mg/L). The major and minor anthocyanins of cyanidin 3,5-diglucoside (0.7–94.7 mg/L), followed by cyanidin 3-glucoside (0.5–52.5 mg/L), pelargonidin 3,5-diglucoside + delphinidin 3-glucoside (0–10.3 mg/L), delphinidin 3,5-diglucoside (0–7.68 mg/L), pelargonidin 3-glucoside (0–9.40 mg/L), and cyanidin-pentoside (0–1.13 mg/L) were identified; the latter anthocyanin as well as cyanidin-pentoside-hexoside and delphinidin-pentoside were detected for the first time in Iranian pomegranates. The total phenolic contents were in the range of 220–2931 mg/100 mL. The results indicate that the pomegranate phenolics are not only influenced by extraction method but also—and even more—affected by the cultivar. Moreover, a good correlation was observed between total phenolic content and ABTS and FRAP methods in all pomegranate juices (>0.90). The results of current research can help to select the pomegranate cultivars for commercial juice production.

scholarly journals Comparison of phenolic profiles and antioxidant activity of three Ornithogalum L. species

2018 ◽  
Vol 44 (3) ◽  
pp. 299-306
Author(s):  
Gülin Renda ◽  
Arzu Özel ◽  
Emine Akyüz Turumtay ◽  
Burak Barut ◽  
Büşra Korkmaz ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Protocatechuic Acid ◽  
Radical Scavenging ◽  
Coumaric Acid ◽  
Antioxidant Power ◽  
Aerial Parts ◽  
Phenolic Profiles ◽  
Ferric Reducing Antioxidant Power ◽  
First Time

Abstract Background Aboveground parts and bulbs of Ornithogalum species are consumed as food and used in traditional medicine in worldwide. Objective It is aimed to report the antioxidant capacity and phenolic compounds content of Ornithogalum sigmoideum, Ornithogalum orthophyllum and Ornithogalum oligophyllum for the first time. Materials and methods Antioxidant activity of the crude methanol extracts of the aerial parts and the bulbs of the species were determined with 1,1-diphenyl-2-picryl-hydrazyl, superoxide radical scavenging, ferrous ion-chelating effect, phosphomolybdenum-reducing antioxidant power and ferric-reducing antioxidant power assay. The ethylacetate, diethylether and water subextracts from leaf and flower were analyzed to quantify selected phenolic compounds by HPLC-UV. Results Among the six extracts, the methanol extract of the aerial parts of O. orthophyllum contained the highest amount of phenolic compounds (GAE, 11.0 mg/g extract). The aerial parts of O. orthophyllum showed higher DPPH and SOD activities than the other extracts with the SC50 values of 0.39±0.05 mg/mL and 0.44±0.08 mg/mL, respectively. Protocatechuic acid, p-hydroxybenzoic acid, vanillic acid and p-coumaric acid were the most abundant compounds at all the subextracts. Conclusion The antioxidant activity is found to be in accordance with the levels of phenolic content in the extracts.

scholarly journals Effects of Fungi-Mediated Solid-State Fermentation on Phenolic Contents and Antioxidant Activity of Brown and White Teff (Eragrostis tef (Zucc.) Trotter) Grains

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Yoseph Asmelash Gebru ◽  
Desta Berhe Sbhatu
Keyword(s):  
Solid State ◽  
Phenolic Compounds ◽  
Solid State Fermentation ◽  
Antioxidant Activities ◽  
Eragrostis Tef ◽  
Fungal Enzymes ◽  
Polyphenol Oxidases ◽  
Phenolic Contents ◽  
Phenolic Profiles ◽  
Structural Breakdown

Teff (Eragrostis tef (Zucc.) Trotter) is a tropical cereal used in preparing a staple food in Ethiopia and Eritrea called injera. Phenolic compounds are available in soluble and bound forms in cereals like teff. Therefore, their bioaccessibility depends on their release from the food matrix. Different food processing methods including fermentation have been applied since ancient times to aid bioaccessibility and improve the properties of food products. This study aimed at investigating changes in phenolic profiles and antioxidant activities of white and brown teff grains during mushroom-mediated solid-state fermentation. Fermentation with mushroom considerably increased total phenol contents of the soluble phenol fraction with Ganoderma lucidum showing relatively higher increase than Pleurotus ostreatus. Bound fraction of teff phenol did not show noticeable changes after fermentation with the two mushroom strains. Such changes are suggested to be attributed to activities of fungal enzymes such as amylases, xylanases, and proteases that induce structural breakdown of grain components including cell walls leading to the liberation or synthesis of a variety of phenolic compounds. On the other hand, total flavonoid content of teff significantly decreased after fermentation by both strains. This is also believed to be caused by the action of fungal polyphenol oxidases that catalyze the oxidation of a variety of phenolic compounds including flavonoids to o-quinones.

scholarly journals Phenolic Compounds of Propolis from the Boreal Coniferous Zone

2012 ◽  
Vol 56 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Anneli Salonen ◽  
Sanna Saarnio ◽  
Riitta Julkunen-Tiitto
Keyword(s):  
Phenolic Compounds ◽  
Caffeic Acid ◽  
Cinnamic Acid ◽  
Geographical Origin ◽  
Caffeic Acid Phenethyl Ester ◽  
Cinnamic Acid Derivatives ◽  
Caffeic Acid Derivatives ◽  
Central European ◽  
Phenolic Profiles ◽  
First Time

Phenolic Compounds of Propolis from the Boreal Coniferous ZoneThe profile of phenolic compounds in 19 propolis samples from different provinces in Finland were analysed for the first time using HPLC-DAD. Nine individual flavonoids (comprising 26% of the identified phenolics), eleven cinnamic acid derivatives (36%), two caffeic acid derivatives (14%), three chlorogenic acid derivatives (14%), and three other phenolic acids (10%) were found in the propolis samples. The compounds found in the largest quantities were methyl-naringenin and caffeic acid phenethyl ester (CAPE). The phenolic profiles of Finnish propolis show marked differences when compared withP. nigraandP. tremuloidespropolis of Central European and Canadian origins. The phenolic compounds found in propolis samples are commonly found in the tree species growing in Finland. Non-metric multidimensional scaling showed that samples were scattered and they did not form clear groups according to the geographical origin or age of the sample.

scholarly journals Oxidative stability of soybean oil enriched with ethyl acetate extract of olive by-products

2020 ◽  
Vol 8 (6) ◽  
pp. 1373-1379
Author(s):  
Semra Turan ◽  
Deniz Günal Köroğlu
Keyword(s):  
Soybean Oil ◽  
Oxidative Stability ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Phenolic Contents ◽  
Total Phenolic Contents ◽  
Phenolic Profiles ◽  
Linoleic Acid Emulsion ◽  
By Products

In this study, oxidative stability of soybean oil (SBO) enriched with ethyl ecetate extracts of olive by-products was investigated. Total phenolic contents, phenolic profiles and antioxidant activities of olive wastewater (OMWW) and olive pomace (OP) extracts were also determined. Total phenolic contents of extracts obtained from OMWW and OP were 134.45 and 281.43 mg gallic acid equivalent (GAE)/g extract, respectively. While antioxidant activities of OMWW extracts in the linoleic acid emulsion were in the range of 85.79 % and 88.54 %, OP extracts had 83.30 % and 90.09 % at different concentrations (0.5, 1, 2 ve 3 mg/mL) after incubation at 37 °C. β-carotene bleaching activities of the extracts at 50 °C were found as 26.80-66.63% in OMWW extracts and 18.76-53.32% in OP extracts, respectively. 2,2′-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities of OP extracts were higher than those of OMWW extracts and ranged from 30.6% to 87.7% in OP extracts and 16.6% to 54.1% in OMWW extracts at these concentrations. Both the antioxidant and antiradical activities of extracts significantly increased with increased concentration (p

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