scholarly journals Effect of Steaming and Boiling on the Antioxidant Properties and Biogenic Amines Content in Green Bean (Phaseolus vulgaris) Varieties of Different Colours

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Raffaella Preti ◽  
Mattia Rapa ◽  
Giuliana Vinci
Keyword(s):  
Phaseolus Vulgaris ◽  
Antioxidant Capacity ◽  
Biogenic Amines ◽  
Antioxidant Properties ◽  
Heat Treatments ◽  
Green Bean ◽  
Cooking Methods ◽  
Green Beans ◽  
Total Polyphenols ◽  
Phenolics Content

Effects of boiling and steaming cooking methods were studied on total polyphenols, antioxidant capacity, and biogenic amines of three green bean varieties, purple, yellow, and green. The vegetables gave good values both for antioxidant capacity and for phenolics content, with the purple variety being the richest in healthful components. Both the heat treatments affected the antioxidant properties of these vegetables, with boiling that reduced the initial antioxidant capacity till 30% in the yellow variety, having the same trend for total polyphenols, with the major decrement of 43% in the green variety. On the contrary, biogenic amines significantly increased only after boiling in green and yellow variety, while purple variety did not show any changes in biogenic amines after cooking. The steaming method showed being better cooking approach in order to preserve the antioxidant properties of green beans varieties and to maintain the biogenic amines content at the lowest level.

scholarly journals Assessment of Antioxidant Properties of Classic Energy Drinks in Comparison with Fruit Energy Drinks

Foods ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 56 ◽  
Author(s):  
Dariusz Nowak ◽  
Michał Gośliński
Keyword(s):  
Vitamin C ◽  
Antioxidant Capacity ◽  
Plant Extracts ◽  
Fruit Juice ◽  
Antioxidant Properties ◽  
Energy Drinks ◽  
Health Issues ◽  
Total Polyphenols ◽  
Natural Pigments ◽  
Total Anthocyanins

Energy drinks (EDs) contain sugar, caffeine, and other bioactive compounds. Recently, new types of EDs, enriched with fruit juices, natural pigments, and plant extracts, have been launched in the market. The objective of this study was to investigate the composition and antioxidant properties of the most popular classic and fruit EDs. The study was carried out including 24 of the most popular energy drinks (classic and fruit EDs). The composition of EDs, especially caffeine and sugar, and antioxidant properties (antioxidant capacity, total polyphenols, total anthocyanins, vitamin C) were analyzed. Energy drinks with added fruit juice or natural pigments had a significantly higher (p ≤ 0.05) antioxidant capacity compared to classic energy drinks. Fruit EDs had a higher concentration of polyphenols and vitamin C. In some fruit EDs, slight amounts of anthocyanins were found. Generally, EDs are not a rich source of polyphenols and are not distinguished by high antioxidant capacity. However, fruit energy drinks and/or ones with added natural pigments have much better antioxidant properties than classic EDs. Both classic and fruit EDs contain a large amount of caffeine and sugar, therefore, it would be advisable not to drink large amounts of EDs for possible related health issues.

scholarly journals Effects of Phaseolus vulgaris Extract on Lipolytic Activity and Differentiation of 3T3-L1 Preadipocytes into Mature Adipocytes: A Strategy to Prevent Obesity

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Felipe Castillo ◽  
Daniel R. González ◽  
Rodrigo Moore-Carrasco
Keyword(s):  
Adipose Tissue ◽  
Phaseolus Vulgaris ◽  
White Adipose Tissue ◽  
Ex Vivo ◽  
Lipolytic Activity ◽  
Overweight And Obesity ◽  
Green Bean ◽  
Glycerol Release ◽  
Green Beans ◽  
Triglyceride Accumulation

Background. Overweight and obesity are defined as abnormal or excessive fat accumulation that may be harmful for health. A global trend in this area is the search for natural compounds that have a proven beneficial effect and no clinical complications. Phaseolus vulgaris (bean) is a vegetable highly consumed worldwide. One of its effects, the most reported, is weight reduction in overweight individuals. Objective. The objective of this study was to investigate the antiobesity activity of this legume in mature 3T3-L1 adipocytes and in rat white adipose tissue in an ex vivo model. Design. Mature adipocytes 3T3-L1 and rat adipose tissue were treated with bean extracts. We quantified lipolysis in mature 3T3-L1 adipocytes and in rat white adipose tissue in an ex vivo model. Results. In an ex vivo assay with adipose tissue, methanolic and aqueous green bean extracts increased glycerol release to the medium compared to control (p<0.05 and p<0.001 respectively). Treatment of 3T3-L1 adipocytes with green bean extracts (800 and 1000 µg/mL) increased glycerol release significantly (p<0.0001). Extracts at concentrations between 500 and 1000 µg/mL reduced intracellular triglyceride accumulation by 34.4% and 47.1% compared to control (p<0.0001). Discussion. Our results propose that bioactive compounds of green beans exert a direct mechanism on adipocytes through lipolysis. Conclusion. We have identified a novel capacity of bean extracts related to lipolytic activity both in vitro and ex vivo, resulting in a powerful lipolytic effect. Moreover, we also found that bean extracts has an antiadipogenic effect during the differentiation of 3T3-L1 preadipocytes. These results suggest that bean is a good candidate for the development of functional ingredients that can help reduce the high rates of death from cardiovascular diseases associated with obesity.

scholarly journals Antioxidant properties and resveratrol content of Polish Regent wines from Podkarpacie region

2019 ◽  
Vol 37 (No. 4) ◽  
pp. 252-259
Author(s):  
Sabina Bednarska ◽  
Aneta Dabrowa ◽  
Joanna Kisala ◽  
Idalia Kasprzyk
Keyword(s):  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Total Flavonoids ◽  
Total Polyphenols ◽  
Total Antioxidant ◽  
Total Flavonoids Content ◽  
Radical Scavenging Ability ◽  
Monomeric Anthocyanins ◽  
Cool Climate

The antioxidant properties of cool-climate Regent wines from Podkarpacie region, Poland were investigated. Total polyphenols, total flavonoids, total monomeric anthocyanins, trans-resveratrol concentration, radical scavenging ability using 1,1-diphenyl-2-picryl-hydrazyl (DPPH) and total antioxidant capacity with TEAC and FRAP methods were measured. The average contents of the compounds determined for Regent wines were comparable to the respective data available in literature found for warm-climate wines. Correspondence Analysis of the data revealed the relation of total polyphenols content and antioxidant capacity and radical scavenging ability of studied wines, and in lesser extent correlation with total flavonoids content. The total monomeric anthocyanins content and resveratrol concentration were poorly related to the total polyphenols content and antioxidant capacity.

scholarly journals Natural Polymeric Beads for Encapsulation of Stellaria media Extract with Antioxidant Properties

2019 ◽  
Vol 56 (4) ◽  
pp. 671-679
Author(s):  
Florina Miere (Groza) ◽  
Alin Cristian Teusdea ◽  
Vasile Laslo ◽  
Luminita Fritea ◽  
Liviu Moldovan ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Calcium Alginate ◽  
Antioxidant Properties ◽  
Alginate Beads ◽  
Point Of View ◽  
Natural Polymers ◽  
Stellaria Media ◽  
Total Polyphenols ◽  
Polymeric Beads

Natural polymers are biodegradable and biocompatible and can be used as carriers of pharmaceutical active compounds, with good results for the enhancement of their stability characteristics.Plant extracts of the Cariophyllaceae family are of great interest due to antioxidant, anti-inflammatory, carminative, anticancer, antibacterial, antifungal, antiviral properties, and more recently, the ability to inhibit intestinal carboxylation and reduce obesity by complex mechanisms.The aim of our study was tocharacterize the Stellaria media aqueous extract from the point of view of total polyphenols (using Folin-Ciocalteu method) and antioxidant capacity, as well as the efficiency of inclusion of Stellaria extract in calcium chloride alginate beads by two different methods. In the same time, the size of alginate microcapsules was investigated along with the released efficiencyfrom the polymeric matrix in different biological fluids.Two different methods for encapsulation of Stellaria media extract were developed in this work, using calcium alginate beads. Encapsulating efficiency shows a better approach within the method in which the extract was in situ encapsulated in �pearls�-shaped beads.

scholarly journals Total polyphenol content and antioxidant capacity of allium plants and their correlation with antibacterial and antifungal activity

2021 ◽  
pp. 85-97
Author(s):  
S. S. Satorov ◽  
F. D. Mirzoeva
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Biologically Active ◽  
Diffusion Method ◽  
Active Components ◽  
Total Polyphenols ◽  
Disk Diffusion Method ◽  
Ethanol Extracts ◽  
Antibacterial And Antifungal

Aim. To determine the total polyphenols and antioxidant capacity and their correlation with antimicrobial and fungicidal properties in some species of the genus Allium growing in Tajikistan.Materials and methods. The objects of the study were 15 kinds of the Amaryllidaceae family. Antibacterial onions were studied by the disk diffusion method against 4 types of microorganisms (test strains) and 1 type of yeast fungus. In the presence of total polyphenols, the content in μg of Gallic acid (GA) per ml of plant extract was measured. To determine the antioxidant activity, a solution of ABTS K2S2O8 was used. Trolox was used as a standard.Results. The maximum content of total polyphenols is characterized by ethanol extracts of A. Carolinianum, A. altaicum, A. elatum, A. oschaninii, A. ramosum, A. hymenorhisum. At the same time, their lowest amount was found in the bulbs of A. longicuspis. A. shoenoprasum, which is statistically significantly lower than in all the above-listed species of this plant group. The extracts from the stems of A. carolinianum, A. elatum, and A. pamiricum had the highest antioxidant effect. There is a direct weak correlation between biologically active components with antimicrobial and fungicidal activity in A. oshaninii and A. suworowii, depending on the altitude gradient.Conclusions. The results allow suggesting that the above-ground and underground parts of some wild-growing endemic species of the genus Allium have different degrees of antioxidant activity due to total polyphenols. The content of total polyphenols and the antioxidant capacity of extracts obtained from various plants in different in large ranges. In some cases, there are direct correlations between the content of polyphenols, antioxidant properties, antimicrobial and fungal properties.

scholarly journals Production of Cowpea Green Pods for Processing

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 490C-490
Author(s):  
A.R. Gonzalez ◽  
D.E. Smith ◽  
A. Mauromoustakos ◽  
M. Davis
Keyword(s):  
Phaseolus Vulgaris ◽  
Potential Problem ◽  
Green Bean ◽  
Yield Potential ◽  
High Yield ◽  
Green Beans ◽  
Green Color ◽  
Bean Cultivar ◽  
Cultural Conditions ◽  
High Yield Potential

A study was conducted to evaluate the possibility of producing and processing immature cowpea (Vigna unguiculata) green pods by using the same technology used for green beans (Phaseolus vulgaris). The cowpea cultivar Bettersnap developed for green pod production and the green bean cultivars Benton and OSU-5402 were produced under the same cultural conditions. `Bettersnap' yielded less than 0.5 ton/ha, while `Benton' and `OSU-5402' produced about 2.5 ton/ha in once-over simulated mechanical harvest. `Bettersnap' had long vines and dense foliage, which resulted in plants with more width and less erectness than `Benton', the predominant green bean cultivar. Uneven pod setting and long pods (23.8 cm) in `Bettersnap' constitute potential problem for mechanical harvest. Canned cowpea pods of sieves 2 and 3 had darker green color, smaller seeds, and higher shear value, fiber content, and sloughing than green bean pods. Our study indicates that there is a need to develop cultivars with high yield potential and concentrated pod setting adapted to mechanical harvest with pods containing less fiber and less tendency to sloughing.

scholarly journals Variability of the antioxidant properties of Berberis fruits depending on the plant species and conditions of habitat

2018 ◽  
Vol 9 (1) ◽  
pp. 56-61 ◽  
Author(s):  
N. O. Khromykh ◽  
Y. V. Lykholat ◽  
I. M. Kovalenko ◽  
A. M. Kabar ◽  
O. O. Didur ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Plant Species ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Total Content ◽  
Practical Significance ◽  
Strong Positive Correlation ◽  
Study Results ◽  
Phenolics Content ◽  
Fruit Plants

Plant fruits, leaves, stems, and other parts are of high nutritional value, and are the source of physiologically active compounds, which can contribute to the treatment of many diseases caused by oxidative stress. Enrichment of the species spectrum of the fruit plants expands the possibilities of their use in dietary nutrition and human treatment. Unfortunately, the introduction of the new fruit plant species in industrial gardens in the Steppe Dnieper is limited to a large extent by the unfavorable climate. In this regard, the assessment of the possibility of realizing the genetic potential of fruit plants from different geographical areas in the steppe climate acquires both scientific and practical significance. The study was conducted on the basis of the fruit plants collection collection of the Botanical Garden of the DNU including four introduced species and one natural species from the genus Berberis. The anomalous weather conditions during the growing season of 2017 (snowfall in April followed by a drought in June) were accompanied by an earlier stage appearance of leaves, flowering and fruit ripening of all introduced plants, especially the Asian species B. amurensis and B. koreana, compared to the native species B. vulgaris. In accordance with the results obtained, fresh weight of the ripe fruits of Berberis species decreased in the order of B. amurensis > B. vulgaris > B. canadensis > B. koreana > B. x declinata. The highest total phenolics content, determined in the isopropanolic fruit extracts by Folin – Ciocalteau assay, was found in the fresh ripe fruits of B. koreana (1362 ± 66 mg GAE/100 g WW), followed by B. x declinata and B. vulgaris fruits (91% and 77% of the B. koreana phenolics content respectively). The highest total flavonoids content determined using the aluminum chloride method was revealed in the fruits of B. koreana (210 ± 6 mg RE/100 g FW) exceeding the content in fruits of other Berberis species by 1.1–2.1 times, while the lowest value (103 ± 4 mg RE/100 g FW) was found in the fruits of B. amurensis. The total reducing power, determined by RP assay, varied in the range from 5.0 to 9.6 mg AAE/100 g DW, and the highest levels were found in the fruits of B. koreana and B. x declinata (respectively, 9.6 ± 0.6 and 8.6 ± 0.5 mg AE/100 g DW) exceeding the reducing capacity of other Berberis species by 1.7–1.9 times. In the fruits of genus Berberis species strong positive correlation was found between the total reducing power and the total content of phenols (r = 0.87), as well as between the reducing power and the total content of flavonoids (r = 0.84). High correlation coefficients confirm the significant contribution of the Berberis fruit phenolic compounds, including the flavonoids, to the antioxidant capacity. So, the study results showed that fruits of all examined Berberis species can be an easily accessible source of antioxidants, however, the antioxidant capacity of fruits decreased in order of B. koreana > B. x declinata > B. vulgaris > B. amurensis > B. canadensis.

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