scholarly journals The Dynamic of Polyphenols Concentrations in Organic and Conventional Sour Cherry Fruits: Results of a 4-Year Field Study

Molecules ◽  
2020 ◽  
Vol 25 (16) ◽  
pp. 3729
Author(s):  
Agnieszka Głowacka ◽  
Elżbieta Rozpara ◽  
Ewelina Hallmann
Keyword(s):  
Bioactive Compounds ◽  
Dry Matter ◽  
Scientific Literature ◽  
Sour Cherry ◽  
Total Flavonoids ◽  
Total Polyphenols ◽  
Organic Farm ◽  
Predominant Form ◽  
The Status ◽  
Total Anthocyanins

Sour cherry fruits are a perfect source of polyphenols, including flavonols, phenolic acids and anthocyanins. According to the literature, organic fruits contain more bioactive compounds, especially polyphenols, compared to conventional fruits. Given that only one two-year experiment on the status of polyphenols in sour cherry fruits in an organic farm was previously conducted and found in the existing scientific literature, the aim of this study was to analyse and compare the concentration of bioactive compounds in organic and conventional sour cherries and to determine the effects of cultivation year and the proper cultivar. Four sour cherry cultivars (“Oblacińska”, “Kelleris 16”, “Pandy 103” and “Dobroceni Bötermo”) harvested in organic and conventional experimental orchards were assessed in this study. The dry matter and polyphenol contents in the fruits were determined. We observed a significantly higher concentration of dry matter in organic samples only in 2015 and 2017. In the case of total polyphenols, including phenolic acid (2015 and 2017–2018), and total flavonoids, including quercetin-3-O-rutinoside, the higher concentration was found in 2016 and 2018. Two individual anthocyanins were identified in sour cherry fruits. Cyanidin-3-O-rutinoside is the predominant form in the pool of total anthocyanins.

scholarly journals Quantitative and Qualitative Identification of Bioactive Compounds in Edible Flowers of Black and Bristly Locust and Their Antioxidant Activity

Biomolecules ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1603
Author(s):  
Ewelina Hallmann
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Dry Matter ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Green Areas ◽  
The Status ◽  
Total Anthocyanins ◽  
Excellent Source

Black and bristly locust flowers are an excellent source of polyphenols, including flavonols, phenolic acids, and anthocyanins. In the present literature, there is a lack of studies showing the quantity and quality of phenolic compounds from different locust flowers. There are a few studies on the status of polyphenols in black locust flowers and their products but not bristly locusts. The aims of this study were to analyze and compare the concentrations of bioactive compounds from Robinia pseudoacacia and Robinia hispida flowers over two years. These two species of plants from six independent locations (parks and green areas) located in Warsaw were assessed in this study. The dry matter and polyphenol contents of the flowers were determined. Black locust flower samples contained significantly more myricetin and luteolin. Only bristly locust flowers contained anthocyanins. Five individual anthocyanins were identified in the pink-colored bristly locust flowers. Pelargonidin-3-O-glucoside and cyanidin-3-O-glucoside were the predominant forms in the pool of total anthocyanins.

scholarly journals Relation between polyphenols content and skin colour in sour cherry fruits

2012 ◽  
Vol 57 (2) ◽  
pp. 57-67 ◽  
Author(s):  
Marija Viljevac ◽  
Krunoslav Dugalic ◽  
Vlatka Jurkovic ◽  
Ines Mihaljevic ◽  
Vesna Tomas ◽  
...  
Keyword(s):  
Total Phenolics ◽  
Sour Cherry ◽  
Significant Negative Correlation ◽  
Skin Colour ◽  
Fresh Weight ◽  
Total Polyphenols ◽  
Fruit Skin ◽  
Total Anthocyanins ◽  
Colour Parameters ◽  
Phenolics Content

Fruit skin colour plays a major role in quality assessment of food, significantly determining consumer`s choice. Colour of sour cherries depends on anthocyanins which are phenolic compounds (flavonoids) present in high amounts in fruits. The aim of this study was to determine a possible relation between polyphenols (total phenolics and anthocyanins) and colour parameters of fruit skin of sour cherries. The plant material used in this study was twenty two sour cherry genotypes from an orchard of Agricultural Institute Osijek. Total phenolics and anthocyanins contents as well as colour parameters (L*, a*, b*, h and C) of fruit skin were determined. Variability between sour cherry genotypes in total phenolics and anthocyanins as well as in colour parameters was revealed. Total polyphenols content varied from 462.7 to 1049.0 mg GAE/100 g of fresh weight, while total anthocyanins ranged from 160.1 to 495.6 mg CGE/100 g of fresh weight. A significant positive correlation was found between polyphenols and anthocyanins content. Total phenolics content had a significant negative correlation with colour parameters b* and h, while anthocyanins content negatively correlated with colour parameters L*, b* and h. According to the obtained results, genotypes Maraska, Heimanns Konservenweichsel and Rexelle are the richest genotypes in polyphenols and anthocyanins content.

scholarly journals Bioactive and Antimicrobial Properties of Oven-Dried Beetroot (Pulp and Peel) Using Different Solvents

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 588
Author(s):  
Ahmad Mohammad Salamatullah ◽  
Khizar Hayat ◽  
Mohammed Saeed Alkaltham ◽  
Mohammed Asif Ahmed ◽  
Shaista Arzoo ◽  
...  
Keyword(s):  
Chlorogenic Acid ◽  
Phenolic Compound ◽  
Bioactive Compounds ◽  
Methanolic Extract ◽  
Antimicrobial Properties ◽  
Reducing Power ◽  
Total Flavonoids ◽  
Total Polyphenols ◽  
The World ◽  
Extraction Solvents

Beetroot is a widely consumed crop all over the world and contains plenty of bioactive compounds. In this study, we analyzed the bioactive as well as the antimicrobial properties of the oven-dried beetroot (pulp and peel) using different solvents. The 50% methanolic extract yielded the highest content of total polyphenols and total flavonoids as well as the reducing power of the beetroot. The beetroot peel exhibited a higher content of total polyphenols, total flavonoids, and reducing power activity under all the extraction solvents. Mixture of methanol and water (50% v/v) extracted the highest chlorogenic acid (78.24 mg/100 g) of the dried beetroot peel, while 1,2-dihydroxybenzene was the most noteworthy phenolic compound (42.52 mg/100 g) in beetroot peel methanolic extract. The 50% methanolic extract of both peel and pulp demonstrated the highest antibacterial and anticandidal potential. These results can be helpful for beetroot consumption.

Antioxidative Capacity of and Contaminant Concentrations in Processed Plum Products Consumed in Romania

2018 ◽  
Vol 81 (8) ◽  
pp. 1313-1320 ◽  
Author(s):  
OANA E. CONSTANTIN ◽  
GABRIELA RÂPEANU ◽  
KRISTINA KUKUROVÁ ◽  
MIHAELA TURTURICĂ ◽  
ZUZANA DUBOVÁ ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Dry Matter ◽  
Quality And Safety ◽  
Total Phenols ◽  
Total Polyphenols ◽  
Total Polyphenol ◽  
Limit Of Quantitation ◽  
Thermally Processed ◽  
Gallic Acid Equivalent

ABSTRACTThe bioactive compounds (total phenols, anthocyanins, and flavonoids) and antioxidant activity of plum-based products (prunes, jams, and marmalade) were evaluated based on spectrophotometric assays and acrylamide and 5-hydroxymethyl-2-furaldehyde concentrations to determine the quality and safety of these products in the Romanian marketplace. The total polyphenol concentrations in prunes, marmalade, and jams were 0.93 to 5.63 g of gallic acid equivalent per kg of dry matter, and the antioxidant activity was 3.0 to 17.2 mmol/kg. The concentrations of potentially harmful acrylamide in the plum products ranged from the limit of quantitation (<20 μg/kg) to 37.44 μg/kg, and the concentration was higher in prunes (26.66 to 163.72 μg/kg) than in jams. The 5-hydroxymethyl-2-furaldehyde concentrations in plum products were also variable, at 36 to 2,149 mg/kg. These data revealed a very low concentration of acrylamide in thermally processed plum products, and the results for total polyphenols and the antioxidant activity of prunes and plum jams may be relevant for evaluating these products as important sources of bioactive compounds.

scholarly journals Comparative Polyphenolic Content and Antioxidant Activities of Some Wild and Cultivated Blueberries from Romania

2011 ◽  
Vol 39 (2) ◽  
pp. 70 ◽  
Author(s):  
Andrea BUNEA ◽  
Olivia Dumitrita RUGINA ◽  
Adela M. PINTEA ◽  
Zoriţa SCONŢA ◽  
Claudiu I. BUNEA ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Vaccinium Corymbosum ◽  
Hydrogen Atom Transfer ◽  
Trolox Equivalent Antioxidant Capacity ◽  
Anthocyanin Content ◽  
Total Flavonoids ◽  
Total Polyphenols ◽  
Reducing Ability ◽  
Total Anthocyanins

Two wild and three cultivated blueberry varieties (‘Elliot’, ‘Bluecrop’ and ‘Duke’) from Romania were analyzed comparatively in order to determine the total polyphenols, total anthocyanins, total flavonoids content and measuring the antioxidant activity using three different single electron transfer-based assays, Trolox equivalent antioxidant capacity (ABTS), ferric reducing ability (FRAP), 2,2-diphenylpicrylhydrazil radical scavenging capacity (DPPH) and one hydrogen atom transfer-assay, oxygen radical absorbance capacity (ORAC). Total polyphenols content ranged from 424.84 - 819.12 mg GAE/100 g FW, total flavonoids ranged from 84.33-112.5 mg QE /100 g FW and total anthocyanins ranged from 100.58-300.02 C3GE/100g FW. The anthocyanins were separated and quantified using RP-HPLC-DAD. In Vaccinium myrtillus, petunidin-3-glucoside and delphinidin-3-glucoside have the highest contribution to the anthocyanin content while in Vaccinium corymbosum, peonidin-3-galactoside represent the major anthocyanin. Except for ORAC assay (r=0.765), all antioxidant activity values obtained were highly correlated with total polyphenol content (0.923≤ r ≤0.986). Wild blueberries had higher total polyphenols content and also antioxidant activity compared with cultivated ones.

scholarly journals Cryoconcentration by Centrifugation–Filtration: A Simultaneous, Efficient and Innovative Method to Increase Thermosensitive Bioactive Compounds of Aqueous Maqui (Aristotelia chilensis (Mol.) Stuntz) Extract

Processes ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 25
Author(s):  
José Miguel Bastías-Montes ◽  
Carla Vidal-San-Martín ◽  
Yanara Tamarit-Pino ◽  
Ociel Muñoz-Fariña ◽  
Olga García-Figueroa ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Lower Percentage ◽  
Total Polyphenols ◽  
Innovative Method ◽  
Total Anthocyanins ◽  
Simultaneous Process ◽  
Aristotelia Chilensis ◽  
Berry Extracts

Maqui (Aristotelia chilensis (Mol.) Stuntz) is a Chilean berry rich in antioxidants, which are mostly found in the pulp and skin of the fruit. The objective was to evaluate the cryoconcentration process by centrifugation–filtration as a simultaneous, efficient, and innovative method to increase the content of thermosensitive bioactive compounds of aqueous maqui extract. Cryoconcentration separated the concentrated solute from the aqueous maqui extract with an efficiency of more than 95%; it increased the content of total polyphenols and total anthocyanins and antioxidant capacity by 280%, 573%, and 226%, respectively. Although the concentrates obtained by evaporation at 50, 70, and 80 °C increased the content of bioactive compounds, they did so in a lower percentage than the cryoconcentrate. Furthermore, cyanidin 3,5-diglucoside was degraded at 70 and 80 °C. In conclusion, cryoconcentration by centrifugation–filtration as a simultaneous process efficiently separates the solutes from the frozen matrix of aqueous maqui extract, and it maintains and increases the contents of polyphenols and anthocyanins and antioxidant capacity. This method is recommended for concentrating natural berry extracts with thermosensitive compounds.

scholarly journals Physicochemical attributes and functional properties of flowers of Brazilian feijoa genotypes

2019 ◽  
Vol 54 ◽  
Author(s):  
Cassandro Vidal Talamini do Amarante ◽  
Alexandra Goede de Souza ◽  
Thalita Dal Toé Benincá ◽  
Cristiano André Steffens ◽  
Marlise Nara Ciotta
Keyword(s):  
Dry Matter ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Total Flavonoids ◽  
Southern Brazil ◽  
Total Phenolic Compounds ◽  
Surface Areas ◽  
Total Antioxidant ◽  
Total Anthocyanins ◽  
Acca Sellowiana

Abstract: The objective of this work was to characterize entire flowers of the feijoa (Acca sellowiana) genotypes 'Alcântara', 'Helena', 'Mattos', 'Nonante', and the accession 2316 for dry matter, total antioxidant activity (TAA), and the contents of soluble solids, ascorbic acid, total anthocyanins, total flavonoids, and total phenolic compounds (TPC), as well as for the petal surface areas and colors. The TAA was quantified by the ABTS and DPPH methods. Flowers of the accession 2316 and of the cultivars Alcântara and Helena showed the highest contents of anthocyanins and flavonoids, as well as the highest values of TPC and TAA. The feijoa genotypes cultivated in Southern Brazil show high contents of soluble solids and represent a natural source of antioxidants.

scholarly journals Biofortification efficiency with magnesium salts on the increase of bioactive compounds and antioxidant capacity in snap beans

2021 ◽  
Vol 51 (6) ◽  
Author(s):  
Juan Pablo Ciscomani-Larios ◽  
Esteban Sánchez-Chávez ◽  
Juan Luis Jacobo-Cuellar ◽  
Hilda Karina Sáenz-Hidalgo ◽  
Nuvia Orduño-Cruz ◽  
...  
Keyword(s):  
Rural Communities ◽  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Magnesium Chloride ◽  
Crop Production ◽  
Mineral Fertilizers ◽  
Total Flavonoids ◽  
Snap Bean ◽  
Snap Beans ◽  
Total Anthocyanins

ABSTRACT: Biofortification of food crops is implemented through the application of mineral fertilizers, to improve the levels of essential mineral elements for human nutrition. Magnesium is a key macronutrient in crop production and quality; however, worldwide, it is the most limiting macronutrient in agriculture. Magnesium plays an important role in manipulating physiological and biochemical processes in plants. Therefore, the objective of this study was to evaluate the efficacy of biofortification with magnesium chloride and sulfate on the accumulation of bioactive compounds and antioxidant capacity in snap bean cv. Strike. Two sources of Magnesium were applied via edaphic route: Magnesium chloride and magnesium sulfate at doses of 0, 50, 100 and 200 ppm during 2018 in Mexico. Accumulation of bioactive compounds (total phenols, total flavonoids and total anthocyanins) and antioxidant capacity in snap bean fruits were evaluated. Results obtained indicate that the concentration of total flavonoids, total anthocyanins and antioxidant capacity in the edible parts of snap beans were higher in the MgSO4 treatment than in the MgCl2 treatments, exceeding 30, 59 and 6% respectively. This is one of the first studies on the edaphic agronomic biofortification of Mg+ and its effect on nutraceutical quality in snap bean. An interesting result is that MgSO4 produced high concentrations of anthocyanins in edible snap beans. These results can be applied as a new strategy to reduce malnutrition and improve the health of the population in poor urban and rural communities in developing countries.

scholarly journals Nutritional value, bioactive compounds and capacity antioxidant in edible flowers of dahlia

2021 ◽  
Vol 20 (5) ◽  
pp. 63-72
Author(s):  
María Teresa Martínez-Damián ◽  
José Merced Mejía-Muñoz ◽  
María Teresa Colinas-León ◽  
Francisca Hernández-Epigmenio ◽  
Oscar Cruz-Alvarez
Keyword(s):  
Statistical Analysis ◽  
Bioactive Compounds ◽  
Nutritional Value ◽  
Eating Habits ◽  
Caloric Content ◽  
Total Flavonoids ◽  
Total Carotenoids ◽  
Purple Colour ◽  
Total Anthocyanins ◽  
Β Carotene

 The aim of this research was to evaluate the nutritional value, bioactive compounds and capacity antioxidant in ligulate flowers of dahlia with different colour. The statistical analysis reveals that the petals of the pink and purple colour have more protein and raw fibre (18.54 and 19.25, 16.54 and 15.81%, respectively) and similar raw fat values between the analysed colours. Likewise, the flowers with the highest content of vitamin C, phenols and total flavonoids were observed in the pink, purple and cherry colours, where the latter also stands out for its content of total anthocyanins (3.2 mg cyanidin-3-glucoside 100 g–1). However, the yellow ones showed higher antioxidant capacity (68.82 mg AAEVC 100 g–1), which coincides with that found with the concentration of total carotenoids (0.64 μg β-carotene g–1). For the consumers who choose to change their eating habits and seek to include ingredients of vegetable origin (vegetarian and vegan) with low caloric content and a sufficient 

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