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 Leaf phenolics and pigments along with their antioxidative potential in some medicinal plants

2018 ◽  
Vol 2 (2) ◽  
pp. 86-92
Author(s):  
Rumana Islam ◽  
Md Injamum Ul Hoque ◽  
Md Ashrafuzzaman ◽  
Md Nesar Uddin
Keyword(s):  
Medicinal Plants ◽  
Chlorophyll A ◽  
Total Phenolics ◽  
Radical Scavenging ◽  
Chlorophyll B ◽  
Fresh Weight ◽  
Adhatoda Vasica ◽  
Paederia Foetida ◽  
Phenolics Content ◽  
Boerhavia Diffusa

Medicinal plants play significant role in human health. Besides this all of the Unani, Herbal, Kobiraji, and Homeopath medicine are produced from medicinal plant. The aim of the present study was to evaluate the phytochemical constituents as total phenolics content, free radical scavenging capacity, chlorophyll a, chlorophyll b, total chlorophyll (a+b) and carotenoids. Leaves of seven important non-solanaceous medicinal plants namely Boerhavia diffusa (punarnava), Adhatoda vasica (basok), Paederia foetida (gandhabhaduli), Rauwolfia serpentina (sarpogandha), Catharanthus roseus (pink nayantara), Catharanthus alba (white nayantara) and Andrographis paniculata (kalomegh) were extracted for phenolics, chlorophyll a and b as well as carotenoids in this experiment. Total phenolics content in seven medicinal plants in this experiment ranged from 142.44 (C. roseus) to 416.25 (A. vasica) mg GAE/100 g leaf fresh weight. The IC50 value for scavenging 2, 2- diphenyl-1- picrylhydrazyl (DPPH) free radicals ranged from 32.12 (C. roseus) to 38.40 (Boerhavia diffusa) mg mL-1 leaf extract in seven different medicinal plants. Pigments content such as chlorophyll a, chlorophyll b, chlorophyll (a+b) and carotenoids were found highest in Adhatoda vasica leaf as 2.347, 0.900, 3.283, and 0.521 mg g-1 fresh weight, respectively, among all the seven species. We may get highly valuable medicine from Adhatoda vasica (basok) leaf for its superior biochemical constituents, which will help our next generation to treat chronic diseases. Asian Australas. J. Food Saf. Secur. 2018, 2(2), 86-92

scholarly journals Analysis of Environmental Conditions Effect in the Phytochemical Composition of Potato (Solanum tuberosum) Cultivars

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 815 ◽  
Author(s):  
Iván Samaniego ◽  
Susana Espin ◽  
Xavier Cuesta ◽  
Verónica Arias ◽  
Armando Rubio ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Environmental Conditions ◽  
Dry Weight ◽  
Crop Productivity ◽  
Fresh Weight ◽  
Total Polyphenols ◽  
Total Carotenoids ◽  
Total Anthocyanins ◽  
Phytochemical Components ◽  
Selection Of

Crop productivity and food quality are affected by environmental conditions. The objective of this work was to evaluate the effect of the environment on the concentration of phytochemical components in several potato (Solanum tuberosum) cultivars. The content of vitamin C (ascorbic acid, AA), the total carotenoids content (TCC), the total polyphenols content (TPC), and the total anthocyanins content (TAC) of 11 potatoes varieties grown in Ecuador (Cutuglahua, Pujilí, and Pilahuín) was measured by the spectrophotometric method. The antioxidant capacity (AC) of potato cultivars was evaluated by the ABTS method. The AA concentration ranged between 12.67 to 39.49 mg/100g fresh weight (FW), the TCC ranged between 50.00 and 1043.50 μg/100g FW, the TPC ranged between 0.41 and 3.25 g of gallic acid equivalents (GAE)/kg dry weight (DW), the TAC ranged between 2.74 and 172.53 μg/g FW and finally the AC ranged between 36.80 and 789.19 μg of trolox equivalents (TE)/g FW. Genotypes (G), location (L), and interaction (G x L) were significant at p < 0.01. The genotype (G) showed a greater variation in the phytochemical contents. AA and TPC showed the highest correlation with the AC. A selection of genotypes with these characteristics can be used to develop germplasms with a high AC.

scholarly journals Farklı Maviyemiş Çeşitlerinden (Vaccinum Sp.) Üretilen Reçel ve Marmelatın Bazı Özelliklerinin Belirlenmesi

2021 ◽  
Vol 9 (5) ◽  
pp. 937-945
Author(s):  
Emine Kübra Güzel ◽  
Cemal Kaya ◽  
Esra Esin Yücel ◽  
Mustafa Bayram
Keyword(s):  
Antioxidant Capacity ◽  
Total Phenolics ◽  
Storage Period ◽  
Total Phenolic ◽  
Phenolic Substance ◽  
Total Anthocyanin ◽  
Total Antioxidant ◽  
Total Anthocyanins ◽  
Phenolics Content ◽  
Polymeric Color

In this study, seasonal fruits belonging to two different varieties of Blueberry (Brigitta and Darrow) grown in Turkey were processed into jam and marmalade in order to ensure their availability throughout the year. It is aimed to examine the changes in the phytochemical properties of the obtained products during the storage period, such as total phenolic substance, total anthocyanin and antioxidant capacity, which are extremely important in terms of nutrition and health. Total phenolics content (TPC), total antioxidant capacity (TEAC and FRAP), total anthocyanins (TA), polymeric color (PC) and hydroxymethylfurfural (HMF) analyses were performed in fresh currant fruits at the beginning of the storage. Also, the same analyses were carried out on jams and marmalades at the end of 6-month storage period. During storage, the amount of total phenolic compounds, TEAC value, FRAP value and amount of anthocyanin values for jam and marmelade samples varied between respectively are 178.68-518.45 μg GAE/g; 1.16-11.60 μmol TE/g; 1.83-10.33 μmol TE/g; 7.35-298.22 µg cy-3 glu/g. Darrow blueberry samples had the highest values in the all types of blueberry jam and marmelade during storage. At the end of 6 months of storage period, it was observed to jam and marmalade samples of Darrow variety had the highest increase (124% and 73%) in terms of polymeric color value, on the other hand jam and marmalade samples of Brigitta variety had the highest increase (65% and 87%) in terms of HMF value.

scholarly journals Evaluation of biochemical and tasting parameters of Prunus cerasus L. fruits

2020 ◽  
pp. 49-57
Author(s):  
Natallia Y. Kolbas ◽  
Aliaksandr P. Kolbas ◽  
Andrei S. Domas ◽  
Dejan Prvulović
Keyword(s):  
Phenolic Compounds ◽  
Phenolic Acids ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Sour Cherry ◽  
Prunus Cerasus ◽  
Total Phenolic ◽  
Fresh Weight ◽  
Total Anthocyanins ◽  
Organoleptic Parameters

Data on the effect of the content of phenolic compounds, including anthocyanins, phenolic acids and flavonols on the organoleptic parameters of fruits of 9 varieties of sour cherry (Prunus cerasus L.) are presented in this article. The total phenolic content varied from 72.52 to 180.61 mg of gallic acid per 100 g of fresh weight (FW) fruit. The total anthocyanins content varied from 32.69 to 259.45 mg of cyanidin-3-O-rutinoside, the total phenolic acids content varied from 48.45 to 75.20 mg of caffeic acid and the total flavonols content varied from 8.53 to 21.46 mg of quercetin per 100 g of FW fruit. The anthocyanins and sugars content of significantly affect in the tasting parameters of sour cherry fruits.

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 Evaluation of phenolic compounds and antioxidant activity in some edible flowers

2020 ◽  
Vol 5 (1) ◽  
pp. 857-870
Author(s):  
Fernando Gonçalves ◽  
João Carlos Gonçalves ◽  
Ana Cristina Ferrão ◽  
Paula Correia ◽  
Raquel P. F. Guiné
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolics ◽  
Total Phenolic ◽  
Potential Health ◽  
Phenolic Contents ◽  
Spectrophotometric Methods ◽  
Potential Source ◽  
Successive Extraction ◽  
Dpph Method ◽  
Total Anthocyanins

AbstractRecently, edible flowers (EF) have aroused increased interest because of their aesthetic properties as well as potential health benefits related to the occurrence of some bioactive compounds. Therefore, the aim of this work was to evaluate the total phenolics, anthocyanins, flavonoids, and antioxidant activity (AOA) (following DPPH and ABTS methods) in eleven EF. The samples were subjected to three successive extraction steps using methanol, and these extracts were then analysed for the aforementioned properties using spectrophotometric methods. The obtained extracts were used for the quantification of phenolic composition and AOA. The results indicated that, among the flowers analysed in this study, red rose, pink rose, and red carnation possessed the highest total phenolic contents (27.53, 23.30, and 18.17 mg g−1 gallic acid equivalents, respectively), total anthocyanins (3.07, 1.97, and 4.47 mg g−1 catechin equivalents [CE], respectively), and AOA (12.07, 15.77, and 12.93 mg g−1 TE, respectively, as given by the DPPH method or 8.23, 9.27 and 8.00 mg g−1 TE, respectively, as given by the ABTS method). The flowers with highest flavonoids contents were red carnation, Mexican marigold, and pink rose (17.50, 16.90, and 16.57 mg g−1 CE, respectively). Cluster analysis grouped the analysed flowers into two groups, those richest in phenolics with AOA and those not so rich. Finally, some important correlations were observed between the total phenolics and the AOA. In conclusion, these flowers could represent a potential source of natural compounds with antioxidant capacity.

scholarly journals A simple new method for aged seed utilization based on melatonin-mediated germination and antioxidant nutrient production

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Song Yu ◽  
Xuetian Zhu ◽  
Helin Yang ◽  
Lihe Yu ◽  
Yifei Zhang
Keyword(s):  
Total Phenolics ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Dpph Radical ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity ◽  
Aged Seed ◽  
Phenolics Content ◽  
Dpph Radical Scavenging ◽  
Aged Seeds

AbstractSeed deterioration, coupled with a decrease in nutrients, is unavoidable following long-term storage, and these seeds are therefore used as livestock fodder. Here, we developed a simple, rapid and efficient method of producing high amounts of antioxidants from deteriorated seeds via melatonin-induced germination. Legume seeds were subjected to high humidity at 55 °C for 12–36 h to obtain aged seeds with a 40% germination rate and severely reduced antioxidant nutrition (total phenolics content, ferric reducing power and 1,1-diphenyl-2-picryhydrazyl (DPPH) radical scavenging capacity). Aged seeds were then treated with 0.1 mM melatonin, resulting in the production of sprouts with a higher total phenolics content (fivefold), greater ferric reducing power (sevenfold) and greater DPPH radical scavenging capacity (twofold) compared to the aged seeds. These findings suggest that melatonin treatment efficiently converted aged seed reserve residues into antioxidant nutrients, providing an alternative use for deteriorated seeds in food production.

scholarly journals Dietary intake of specific phenolic compounds and their effect on the antioxidant activity of daily food rations

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Wojciech Koch ◽  
Tomasz Baj ◽  
Wirginia Kukula-Koch ◽  
Zbigniew Marzec
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Total Phenolics ◽  
Female Students ◽  
Male And Female ◽  
Daily Food ◽  
Phenolic Components ◽  
Phenolics Content ◽  
Test Correlation

AbstractThe determination of phenolic acids’ and flavonoids’ content in daily food rations (DFRs) of a selected group of male and female students and the development of chromatographic conditions is the primary goal of the study. The presence of 7 phenolic components were confirmed in the prepared extracts from all diets reconstructed within a period of 3 years. The highest concentrations were determined for hesperidin (124 and 55.6 mg for women and men, respectively), naringin (47.6 mg in female and 37 mg in male diets) and chlorogenic acid (19.7 and 19.8 mg for women and men). The antioxidant potential of the daily food rations, measured with a DPPH test, was higher for women (range 47.1‒78.8%) than for men (range 34.5‒78.0%) and was found to strongly correlate with the total phenolics content of the samples (Folin-Ciocalteu test) (correlation coefficient 0.90).

scholarly journals Influence of the Addition of Selected Spices on Sensory Quality and Biological Activity of Honey

2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Aleksandra Wilczyńska ◽  
Joanna Newerli-Guz ◽  
Piotr Szweda
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Food Industry ◽  
Sensory Quality ◽  
Total Phenolics ◽  
Antioxidant Properties ◽  
Positive Health ◽  
Functional Product ◽  
Phenolics Content ◽  
Growth Of Bacteria

Bee honey is nutritious and has numerous health benefits, but its taste is for many people too bland. Honey with addition of spices could be important to the food industry as a functional product with positive health image and interesting taste. Such product would definitely meet health-driven consumers’ expectations. Therefore, the aim of this study was to evaluate the effect of addition of selected spices on sensory, antimicrobial, and antioxidant properties of honey. Results showed that the addition of spices significantly affected the taste and the smell of honey (p<0,05) and that honey with the cinnamon was the most desired and easily accepted product by the consumers. The addition of spices had no significant effect on texture and appearance. All tested samples showed the ability to inhibit the growth of bacteria and, contrary to the assumptions, the addition of spices did not cause an increase of antimicrobial activity. The results also showed that the kind and amount of added spice significantly affected the antioxidant activity: ability to scavenge free radicals and total phenolics content. The highest antioxidant activity revealed the honey with cinnamon and the lowest revealed the honey with cardamom addition.

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