Analysis of selected stilbenes in <i>Polygonum cuspidatum</i> by HPLC coupled with CoulArray detection

Beňová, Blanka; Adam, Martin; Onderková, Kateřina; Královský, Josef; M, Krajícek

doi:10.1002/jssc.200800119

Cited by 38 publications

(9 citation statements)

References 27 publications

(16 reference statements)

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“…When comparing the amount of piceatannol and resveratrol found in the extracts, it was verified that the extracts obtained using ethanol showed small differences of stilbenes content, whereas in the case of extracts that were obtained with acetone, the amount of resveratrol was significantly higher than the amount of piceatannol. These results corroborate other previous studies, in which the amount of resveratrol was higher than the amount of piceatannol found in plants [ 28 , 29 , 30 ]. Some authors showed that the amount of resveratrol in grapes was approximately four times higher than that of piceatannol (0.78 μg/g and 3.18 μg/g, respectively) [ 31 ].…”

Section: Resultssupporting

confidence: 93%

Identification and Quantification of Stilbenes (Piceatannol and Resveratrol) in Passiflora edulis By-Products

et al. 2020

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Recently, studies on the by-products from the food industry, such as passion fruit seeds, have significantly increased, as these can have an added value, due to their properties, such as potential antioxidant activity. This study was conducted to determine the presence of piceatannol and resveratrol in various extracts of passion fruit (Passiflora edulis) seeds from Madeira Island and a commercial passion fruit oil was used as reference. The commercial oil and the extracts that were obtained by traditional Soxhlet method with ethanol and acetone did not reveal the presence of the two stilbenes, piceatannol and resveratrol. However, the extracts that were obtained by the ultrasound method showed significant amounts of piceatannol and resveratrol when compared with the commercial oil. The presence of these compounds indicates that this oil could have potential application in cosmetic and pharmaceutical industries, due to their proven antioxidant and anti-aging properties.

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Section: Resultssupporting

confidence: 93%

Identification and Quantification of Stilbenes (Piceatannol and Resveratrol) in Passiflora edulis By-Products

et al. 2020

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“…The result that stilbenes and anthraquinones are major secondary metabolites of RJ is consistent with the previous data [23]. The contents of polydatin and resveratrol in dried rhizomes of RJ was similar to those of a previous report [24]. However, phenylpropanoid glucosides were not determined in RS by our analytical method, while there is a report that these compounds were detected in RS by LC-MS analysis [23].…”

Section: Hplc-dad Profiles Of Reynoutria Plantssupporting

confidence: 92%

“…There is even a report that seems to have treated R. japonica and R. forbesii as the same species [17]. Despite their outer morphological characteristics, and the fact that the genetic diversity or chemical constituents of some specimens have been previously reported, there are no previous reports of an anatomical or phytochemical study that can be applied to the decree of the botanical origin of the Reynoutria species [17][18][19][20][21][22][23][24][25]. Furthermore, it is very hard to discriminate crude drugs from these species precisely because they are usually sold as chopped rhizomes in the markets.…”

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confidence: 99%

Comparative Inner Morphological and Chemical Studies on Reynoutria Species in Korea

Akter

Kim

Park

et al. 2020

Plants

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Reynoutria species are medicinal plants that belong to the family Polygonaceae and are widely distributed in eastern Asia, North America and Europe. Although the phylogeny and morphological and anatomical studies of some species in Korea have been previously reported, there are no discriminative anatomical and chemical data available. Therefore, anatomical characterization of the leaf, stem and root, and high performance liquid chromatography-diode array detector (HPLC-DAD) analyses were carried out to assess the differences in anatomical and chemical profiles among the Reynoutria plants in Korea, i.e., R. japonica, R. sachalinensis, R. forbesii and R. japonica for. elata. The anatomical evaluation showed discriminative characteristics, such as the shape of the stomata and the stomatal index of the lower leaf surface; the ratio of the adaxial/abaxial height, the size of the vascular bundles and the frequency of druse in the midrib, petiole, and stem; and the pericycle number in the root. For the HPLC analysis, ten compounds corresponding to each major peak were isolated from R. japonica roots and their structures were identified by comprehensive spectroscopic studies. Samples collected before the flowering season showed higher contents of these ten major compounds than those collected after the flowering season. The orthogonal projections to latent structures-discrimination analysis (OPLS-DA) with the inner morphological and HPLC quantification results, clearly discriminated these plants. These results provide anatomical parameters and HPLC profiling that can be used to distinguish the four Reynoutria plants, which supports quality control for their precise identification.Plants 2020, 9, 222 2 of 13 and the young stems have been used as a foodstuff [10]. R. sachalinensis and R. japonica for. elata are endemic plants on the Ulleung and Jeju islands of Korea, respectively [11]. R. sachalinensis, with its characteristic large leaves, is known to have antioxidant and anti-inflammatory activities [12,13]. The outer morphology of R. japonica for. elata is similar to R. japonica. The only differences are its smaller size, red flower and seeds [11]. Early works have reported many phytochemical constituents from the roots and leaves of Reynoutria species, including stilbenes (resveratrol and polydatin), flavonoids (rutin, apigenin, quercetin, quercitrin, isoquercitrin, hyperoside, reynoutrin and kaempferol), anthraquinones (emodin, citreorosein, physcion, fallacinol, chrysophanol, phylloquinones B and C, and anthraglycosides A and B), coumarins, essential oils, and others (lapathoside, 8-hydroxycalamenene, oleanolic acid, chlorogenic acid, protocatechuic acid, gallic acid, tachioside etc) [1][2][3][4][8][9][10][14][15][16].Although Reynoutria species are used as a folk medicine, their exact botanical origin is unclear. Previous studies have reported certain Reynoutria species with great ambiguity in their taxonomic classification, because of variabilities in their chromosome number and morphology [17]. In addition, taxono...

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“…Based on the calibration curves of selected compounds (trans-resveratrol, polydatin, (−)-epicatechin, (+)-catechin), the contents of individual compounds were determined in all the extracts used in this study. Among stilbenes, trans-resveratrol has been the most widely studied for its effect on human health [24], and catechins were determined in spring sprouts of Fallopia species [25]. The highest contents of all investigated phenolic compounds were found in rhizomes (Figure 1A), whereas in the flowers (Figure 1B), the contents were considerably lower or not detectable at all.…”

Section: Identification and Quantification Of Phenolic Compoundsmentioning

confidence: 99%

In Vitro Comparison of the Bioactivities of Japanese and Bohemian Knotweed Ethanol Extracts

Pogačnik

Bergant

Skrt

et al. 2020

Foods

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Knotweed is a flowering plant that is native to temperate and subtropical regions in the northern hemisphere. We evaluated Japanese (Reynoutria japonica Houtt.) and Bohemian (Fallopia x bohemica) knotweed rhizome and flower ethanol extracts and compared them in terms of their biological activities. The specific polyphenols were identified and quantified using HPLC/DAD, and the antioxidant activity was determined using 2,2-diphenly-1-picrylhydrazyl (DPPH) and cellular antioxidant capacity assays. The anticancer activity was evaluated as the difference between the cytotoxicity to cancer cells compared with control cells. The antimicrobial activity was determined using bacteria and yeast. The antidiabetic activity was tested as the ability of the extracts to inhibit α-amylase. Both rhizome extracts were sources of polyphenols, particularly polydatin and (−)-epicatechin; however, the cellular assay showed the highest antioxidant capacity in the flower extract of F. bohemica. The PaTu cell line was the least sensitive toward all knotweed extracts. The flower extracts of both species were less toxic than the rhizomes. However, the activity of the tested extracts was not specific for cancer cells, indicating a rather toxic mode of action. Furthermore, all used extracts decreased the α-amylase activity, and the rhizome extracts were more effective than the flower extracts. None of the extracts inhibited bacterial growth; however, they inhibited yeast growth. The results confirmed that rhizomes of Reynoutria japonica Houtt. could become a new source of bioactive compounds, which could be used for the co-treatment of diabetes and as antifungal agents.

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Analysis of selected stilbenes in Polygonum cuspidatum by HPLC coupled with CoulArray detection

Cited by 38 publications

References 27 publications

Identification and Quantification of Stilbenes (Piceatannol and Resveratrol) in Passiflora edulis By-Products

Identification and Quantification of Stilbenes (Piceatannol and Resveratrol) in Passiflora edulis By-Products

Comparative Inner Morphological and Chemical Studies on Reynoutria Species in Korea

In Vitro Comparison of the Bioactivities of Japanese and Bohemian Knotweed Ethanol Extracts

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