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Major phenolic compounds in black currant (Ribes nigrum L.) buds: Variation due to genotype, ontogenetic stage and location. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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52
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Weber MT, Hannig M, Pötschke S, Höhne F, Hannig C. Application of Plant Extracts for the Prevention of Dental Erosion: An in situ/in vitro Study. Caries Res 2015; 49:477-87. [PMID: 26228871 DOI: 10.1159/000431294] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 05/07/2015] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES Antiadherent and antibacterial effects of certain plant extracts have been proven to be beneficial in preventive dentistry. In the present in situ/in vitro crossover study, the impact of plant extracts rich in polyphenols on the erosion-protective properties of the in situ pellicle was evaluated. METHODS Individual splints were prepared for 12 subjects for intraoral exposure of bovine enamel specimens. Following formation of a 1-min pellicle, watery plant extracts (leaves of the wild form of Ribes nigrum, the wild form of Origanum as well as a combination of both) were administered for 10 min in situ. Alternatively, a mouth rinse with fluorides (Elmex Kariesschutz) was performed for 1 min. After further oral exposure for 19/28 min, respectively, slabs were removed and incubated with HCl in vitro over 120 s (pH 2, 2.3, 3). The resulting calcium and phosphate release was quantified photometrically. Slabs with and without a 30-min in situ pellicle served as controls. The modification of pellicle ultrastructure was evaluated by transmission electron microscopy (TEM). RESULTS Plant extracts modulated the erosion-protective properties of the native in situ pellicle in all test groups in a pH-dependent manner. The combination of R. nigrum leaves and Origanum enhanced the protective properties of the pellicle at all pH values; the administration of this preparation was comparable, yet superior, to the effect of the fluoridated mouth rinse. TEM images indicated that rinsing with R. nigrum leaves/Origanum yielded a distinctly thicker and more electron-dense pellicle. CONCLUSION The combination of certain plant extracts offers a novel approach to the complementary prevention of dental erosion.
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Affiliation(s)
- Marie-Theres Weber
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
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Zhao L, Li S, Zhao L, Zhu Y, Hao T. Antioxidant Activities and Major Bioactive Components of Consecutive Extracts from Blue Honeysuckle (L
onicera Caerulea
L.) Cultivated in China. J Food Biochem 2015. [DOI: 10.1111/jfbc.12173] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lei Zhao
- Beijing Engineering and Technology Research Center of Food Additives; Beijing Technology and Business University; Beijing 100048 China
- Beijing Laboratory for Food Quality and Safety; Beijing Technology and Business University; Beijing 100048 China
| | - Siran Li
- Beijing Engineering and Technology Research Center of Food Additives; Beijing Technology and Business University; Beijing 100048 China
| | - Lei Zhao
- Beijing Laboratory for Food Quality and Safety; Beijing Technology and Business University; Beijing 100048 China
| | - Ye Zhu
- Beijing Engineering and Technology Research Center of Food Additives; Beijing Technology and Business University; Beijing 100048 China
| | - Tianyang Hao
- Beijing Engineering and Technology Research Center of Food Additives; Beijing Technology and Business University; Beijing 100048 China
- Beijing Laboratory for Food Quality and Safety; Beijing Technology and Business University; Beijing 100048 China
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Valdés A, Vidal L, Beltrán A, Canals A, Garrigós MC. Microwave-Assisted Extraction of Phenolic Compounds from Almond Skin Byproducts (Prunus amygdalus): A Multivariate Analysis Approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5395-5402. [PMID: 26005743 DOI: 10.1021/acs.jafc.5b01011] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A microwave-assisted extraction (MAE) procedure to isolate phenolic compounds from almond skin byproducts was optimized. A three-level, three-factor Box-Behnken design was used to evaluate the effect of almond skin weight, microwave power, and irradiation time on total phenolic content (TPC) and antioxidant activity (DPPH). Almond skin weight was the most important parameter in the studied responses. The best extraction was achieved using 4 g, 60 s, 100 W, and 60 mL of 70% (v/v) ethanol. TPC, antioxidant activity (DPPH, FRAP), and chemical composition (HPLC-DAD-ESI-MS/MS) were determined by using the optimized method from seven different almond cultivars. Successful discrimination was obtained for all cultivars by using multivariate linear discriminant analysis (LDA), suggesting the influence of cultivar type on polyphenol content and antioxidant activity. The results show the potential of almond skin as a natural source of phenolics and the effectiveness of MAE for the reutilization of these byproducts.
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55
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Evaluation of the effect of ultrasonic variables at locally ultrasonic field on yield of hesperidin from penggan (Citrus reticulata) peels. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2014.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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56
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Luzak B, Boncler M, Rywaniak J, Dudzinska D, Rozalski M, Krajewska U, Balcerczak E, Podsedek A, Redzynia M, Watala C. Extract from Ribes nigrum leaves in vitro activates nitric oxide synthase (eNOS) and increases CD39 expression in human endothelial cells. J Physiol Biochem 2014; 70:1007-19. [PMID: 25407137 PMCID: PMC4254183 DOI: 10.1007/s13105-014-0370-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 11/10/2014] [Indexed: 11/29/2022]
Abstract
The aim of the present study was to evaluate whether blackcurrant leaf extract (BLE) modulates endothelium antithrombotic function, namely increases the expression/activity of ADPase (CD39) and augments the production of nitric oxide in human umbilical vein endothelial cells (HUVEC). It was found that BLE with proanthocyanidins (60 % of the total polyphenol content) increased the CD39-positive endothelial cell fraction (up to 10 % for 2.5 μg/ml, and up to 33 % for 15 μg/ml, p < 0.05 or less) in a concentration-dependent manner, and enhanced endothelial nitric oxide synthase (eNOS) activation (T495 phosphorylation decreased by 31 ± 6 % for 2.5 μg/ml and 48 ± 6 % for 15 μg/ml; S1177 phosphorylation increased by 13 ± 3 % for 2.5 μg/ml and 18 ± 7 % for 15 μg/ml, compared to untreated cells, p < 0.05 or less). Additionally, incubation for 24 or 48 h with BLE at a lower range of polyphenol concentrations, significantly increased cell viability with a maximal effect at 2.5 μg/ml (viability increased by 24.8 ± 1.0 % for 24 h and by 32.5 ± 2.7 % for 48-h time incubation, p < 0.0001). The increased CD39 expression and the increased eNOS activation in HUVEC can be regarded as the beneficial markers of the improvement of antiplatelet action of endothelial cells. Unexpectedly, these assumptions were not confirmed in the experimental model of platelet-endothelial cell interactions. These observations lead to the conclusion that BLE may improve endothelial cell viability at low physiological concentrations without affecting the antiplatelet action of endothelium.
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Affiliation(s)
- Boguslawa Luzak
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, 6/8 Mazowiecka Street, 92-215, Lodz, Poland,
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Vagiri M, Conner S, Stewart D, Andersson SC, Verrall S, Johansson E, Rumpunen K. Phenolic compounds in blackcurrant (Ribes nigrum L.) leaves relative to leaf position and harvest date. Food Chem 2014; 172:135-42. [PMID: 25442534 DOI: 10.1016/j.foodchem.2014.09.041] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 07/31/2014] [Accepted: 09/09/2014] [Indexed: 11/18/2022]
Abstract
Blackcurrant leaves are an essential source of phenolic compounds and this study investigated their variation relative to leaf positions and harvest date. The phenolic content varied between harvest dates, although leaf position on the shoot and interactions also played an important role. The contents of quercetin-malonyl-glucoside, kaempferol-malonyl-glucoside isomer and kaempferol-malonyl-glucoside were higher than that of the other identified phenolic compounds, whereas epigallocatechin was the lowest for all investigated leaf positions and harvest dates. The content of several of the compounds was highest in June, while quercetin-glucoside, kaempferol-glucoside and total phenols, increased towards the end of the season. Leaf position influenced the content of myricetin-malonyl-glucoside, myricetin-malonyl-glucoside isomer, quercetin-malonyl-glucoside and kaempferol-glucoside at the end of the season. Knowledge relating to the influence of ontogenetic and harvest time on the content of specific phenolic compounds might contribute in tailoring functional foods or pharmaceutical products using blackcurrant leaves as natural ingredients.
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Affiliation(s)
- Michael Vagiri
- Swedish University of Agricultural Sciences, Department of Plant Breeding, Balsgård, Fjälkestadsvägen 459, SE-291 94 Kristianstad, Sweden; Swedish University of Agricultural Sciences, Department of Plant Breeding, Box 101, SE-230 53 Alnarp, Sweden.
| | - Sean Conner
- Environmental and Biochemical Science Group, Enhancing Crop Productivity and Utillisation Theme, The James Hutton Institute, Invergowrie, Dundee DD2 5DA, United Kingdom
| | - Derek Stewart
- Environmental and Biochemical Science Group, Enhancing Crop Productivity and Utillisation Theme, The James Hutton Institute, Invergowrie, Dundee DD2 5DA, United Kingdom; School of Life Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - Staffan C Andersson
- Swedish University of Agricultural Sciences, Department of Plant Breeding, Box 101, SE-230 53 Alnarp, Sweden
| | - Susan Verrall
- Environmental and Biochemical Science Group, Enhancing Crop Productivity and Utillisation Theme, The James Hutton Institute, Invergowrie, Dundee DD2 5DA, United Kingdom
| | - Eva Johansson
- Swedish University of Agricultural Sciences, Department of Plant Breeding, Box 101, SE-230 53 Alnarp, Sweden
| | - Kimmo Rumpunen
- Swedish University of Agricultural Sciences, Department of Plant Breeding, Balsgård, Fjälkestadsvägen 459, SE-291 94 Kristianstad, Sweden
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Enkhtuya E, Kashiwagi T, Shimamura T, Ukeda H, Tseye-Oidov O. Screening Study on Antioxidant Activity of Plants Grown Wildly in Mongolia. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2014. [DOI: 10.3136/fstr.20.891] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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59
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Vagiri M, Ekholm A, Öberg E, Johansson E, Andersson SC, Rumpunen K. Phenols and ascorbic acid in black currants (Ribes nigrum L.): variation due to genotype, location, and year. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:9298-306. [PMID: 24011264 DOI: 10.1021/jf402891s] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Black currant berries contain many biochemical compounds with proven or potential human health benefits. We studied the content of total and single polyphenols, ascorbic acid, soluble sugars, and titratable acidity for two advanced selections and three cultivars of black currant at two distant locations in Sweden (south: 56°06'N; north: 65°21'N) over a 3 year period. Regression analyses revealed the effect of genotype to be considerably larger than that of location and year. However, significant effects of location, year, and interactions were also revealed. A principal component analysis nevertheless separated the genotypes. The content of ascorbic acid, total phenols, total anthocyanins, and soluble sugars was highest in berries from the south, whereas the content of phenolic acids and titratable acidity was highest in berries from the north. The results show that selection of cultivars and production sites are important for cultivation of high-quality black currant raw material for health-promoting products.
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Affiliation(s)
- Michael Vagiri
- Swedish University of Agricultural Sciences , Department of Plant Breeding, Balsgård, Fjälkestadsvägen 459, SE-291 94 Kristianstad, Sweden
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Birasuren B, Oh HL, Kim CR, Kim NY, Jeon HL, Kim MR. Antioxidant Activities of Ribes diacanthum Pall Extracts in the Northern Region of Mongolia. Prev Nutr Food Sci 2012; 17:261-8. [PMID: 24471094 PMCID: PMC3866731 DOI: 10.3746/pnf.2012.17.4.261] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 12/08/2012] [Indexed: 11/24/2022] Open
Abstract
Ribes diacanthum Pall (RDP) is a member of the Saxifragaceae family. The plant is traditionally used in Mongolia for the treatment of various ailments associated with kidney and bladder's diseases, cystitis, kidney stone, and edema. This study was aimed to investigate antioxidant activities of different solvent extracts of whole Pall plants, based on ferric-reducing antioxidant potential (FRAP), 2,2'-azinobis(3-ethybenzothiazoline-6-sulfonic acid) (ABTS· +) radical scavenging activity, 1,1-diphenyl-2-picrydrazyl (DPPH·), and hydroxyl (·OH) radical scavenging activities. Additionally, total flavonoids and phenolic contents (TPC) were also determined. The ethyl acetate extract of RDP (EARDP) had a remarkable radical scavenging capacity with an IC50 value of 0.1482 mg/mL. In addition, EARDP was shown to be higher in total phenolic and flavonoid contents than the methanol extract of RDP (MRDP). Moreover, the EARDP had the predominant antioxidant capacity, DPPH, hydroxyl, and ABTS radical scavenging activities and ferric reducing power. These results suggest a potential for R. diacanthum Pall extract as a functional medicinal material against free-radical-associated oxidative damage.
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Affiliation(s)
- Bayarmaa Birasuren
- Department of Food & Nutrition, Chungnam National University, Daejeon 305-764, Korea
| | - Hye Lim Oh
- Department of Food & Nutrition, Chungnam National University, Daejeon 305-764, Korea
| | - Cho Rong Kim
- Department of Food & Nutrition, Chungnam National University, Daejeon 305-764, Korea
| | - Na Yeon Kim
- Department of Food & Nutrition, Chungnam National University, Daejeon 305-764, Korea
| | - Hye Lyun Jeon
- Department of Food & Nutrition, Chungnam National University, Daejeon 305-764, Korea
| | - Mee Ree Kim
- Department of Food & Nutrition, Chungnam National University, Daejeon 305-764, Korea
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