scholarly journals Influence of Organic Fertilization on Nutritional Characteristics and Antioxidant Capacity of Melon Fruits

2020 ◽  
Vol 77 (2) ◽  
pp. 17
Author(s):  
Tatyana BILEVA ◽  
Nadezhda PETKOVA ◽  
Todor BABRIKOV
Keyword(s):  
Antioxidant Capacity ◽  
Titratable Acidity ◽  
Organic Fertilizers ◽  
Total Flavonoids ◽  
Total Phenols ◽  
Organic Fertilization ◽  
Mineral Fertilization ◽  
Healthy Nutrition ◽  
Nutritional Characteristics ◽  
Total Flavonoids Content

This study aimed to investigate the influence of organic fertilization on nutritional characteristics and antioxidant capacity of three melon varieties fruits (Cucumis melo L.) - Hybrid 15 F1, Desserten 5, and Galia. The trials were carried out under greenhouse conditions in the infested with root-knot nematodes soil. Galia was grown with mineral fertilization. The other two varieties were treated with organic fertilizers - Liquid “Humus Active” during vegetation and Neem cake twice - before planting and during flowering. The dry matter, ash, titratable acidity, pH, carbohydrate, protein, lipid content, pigments, total phenols, and total flavonoids, and the antioxidant capacity were evaluated. Desserten 5 demonstrated the highest sugars content – sucrose (5.32 g/100 g), glucose (1.35 g/100 g) and fructose (2.51 g/100 g), as well as the highest carotenoids (90 μg/100 g fw), total phenols (540 mg GAE/100 g fw), and total flavonoids content (73 mg QE/100 g fw) and antioxidant capacity(25 mM TE/100 g). The results revealed that the nutritional value of melon fruits could be improved by using organic fertilization for the production of foods for healthy nutrition.

scholarly journals Optimization and Evaluation of Bioactive Characteristics of Commercial Rumex abyssinicus (Mekmeko) Tea in Ethiopia

2020 ◽  
Author(s):  
Kiber Gashe ◽  
Tazebew Alemu
Keyword(s):  
Antioxidant Capacity ◽  
Mineral Composition ◽  
Physicochemical Parameters ◽  
Titratable Acidity ◽  
Sensory Attributes ◽  
Total Flavonoids ◽  
Total Phenols ◽  
Titrable Acidity ◽  
Total Anthocyanins ◽  
Nutraceutical Properties

The physicochemical parameters, mineral composition, and nutraceutical properties of commercial “mekmeko” teas powder were analyzed in the present study. The pH of samples was slightly acidic (3.74 to 4.15), titratable acidity was low (0.094 to 0.155%) and sensory attributes (over all acceptability) were wide variable (5.9 - 6.69). The optimized selected commercial “mekmeko” tea obtained pH(4.05), titrable acidity(0.069%) ,acceptable sensory results (6.69), acceptable highest content of zinc (0.069 mg•L−1), magnesium (2.12 mg•L−1), potassium (62.34 mg•L−1),iron (0.28 mg•L−1) and calcium (17.19 mg•L−1). The nutrceticual property of optimized commercial “mekmeko” tea obtained acceptable highest content in total phenols (211.38 mg•L−1), total flavonoids (62.98 mg•L−1), total catechins (409.67 mg•L−1), and total anthocyanins (581.97 mg•L−1). Optimized “Mekmeko” teas showed the highest antioxidant capacity levels in DPPH (718.41 μmolTE•L−1), ABTS (607.62μmolTE•L−1), and FRAP (953.81μmolTE•L−1) assays. The results obtained in the present work give information to consumers for choosing flavored-colored ready-to-drink “mekmeko” tea based on the physicochemical, nutritional and nutraceutical properties.

scholarly journals Physicochemical Parameters, Mineral Composition, and Nutraceutical Properties of Ready-to-Drink Flavored-Colored Commercial Teas

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Daniel Flores-Martínez ◽  
Vania Urías-Orona ◽  
Luis Hernández-García ◽  
Werner Rubio-Carrasco ◽  
Korev Silva-Gutiérrez ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Mineral Composition ◽  
Physicochemical Parameters ◽  
Titratable Acidity ◽  
Total Flavonoids ◽  
Total Phenols ◽  
Color Parameters ◽  
Total Anthocyanins ◽  
Rose Petal ◽  
Nutraceutical Properties

The physicochemical parameters, mineral composition, and nutraceutical properties of ready-to-drink flavored-colored commercial teas were analyzed in the present study. The pH of samples was slightly acidic (3.72 to 4.11), titratable acidity was low (0.092 to 0.174%), and color parameters were wide variable (pink, yellow, brown, and red). Citrus-flavored tea obtained the highest content of manganese (0.281 mg·L−1), zinc (0.069 mg·L−1), magnesium (2.92 mg·L−1), potassium (62.65 mg·L−1), and sodium (271.74 mg·L−1), while lemon-, peach-, and blueberry-flavored teas obtained the highest levels of copper (0.035 mg·L−1), iron (0.246 mg·L−1), and calcium (18.21 mg·L−1), respectively. Citrus, lemon-, sangria-, and rose petal-flavored teas obtained the highest content in total phenols (211.56 mg·L−1), total flavonoids (65.46 mg·L−1), total catechins (640.79 mg·L−1), and total anthocyanins (640.79 mg·L−1), respectively. Lemon- and rose petal-flavored teas showed the highest and lowest antioxidant capacity levels in DPPH (1096.00 to 118.77 μmolTE·L−1), ABTS (1048.84 to 232.00 μmolTE·L−1), and FRAP (1269.20 to 147.70 μmolTE·L−1) assays. The levels of sodium reported in labels of all samples were lower than data obtained in our analysis. Also the levels observed for total phenols in blueberry-, citrus-, and rose petal-flavored teas were lower than our analysis, but total phenols of lemon-, peach-, and sangria-flavored teas were higher than the content reported in their labels. The results obtained in the present work give information to consumers for choosing flavored-colored ready-to-drink tea based on the physicochemical, nutritional, and nutraceutical properties.

scholarly journals Yield and quality criteria in organically and conventionally grown tomatoes in Turkey

2010 ◽  
Vol 67 (4) ◽  
pp. 424-429 ◽  
Author(s):  
Ersin Polat ◽  
Halil Demir ◽  
Fedai Erler
Keyword(s):  
Sugar Content ◽  
Soluble Sugar ◽  
Quality Criteria ◽  
Organic Fertilizers ◽  
First Year ◽  
Organic Fertilization ◽  
Mineral Fertilization ◽  
Organic Systems ◽  
Yield And Quality ◽  
Organically Grown

The term 'organically grown food' denotes products that have been produced in accordance with the principles and practices of organic agriculture. The use of alternatives to synthetic fertilizers is an important issue in organic systems. A two-year field experiment to evaluate effects of organic fertilizers on the yield and quality of open field grown tomatoes (Lycopersicon esculentum Mill.) was carried out in Southern Turkey in 2000 and 2001. Combinations of manure, blood flour and micronutrient preparations were used for fertilization, and conventional mineral fertilization was included as the control. Yield did not differ between the fertilization and the Conventional treatments in the first year of the study, but the highest yield was obtained from conventional in the second year. No differences were found between treatments in terms of fruit soluble sugar content or citric acid. The application of organic fertilizers positively affected the micronutritional element content of tomato fruits compared to the conventional treatment. Organic fertilization results in improved yield and fruit quality compared to conventional fertilization. In addition, organic fertilization should be supported in order to facilitate reuse and disposal of organic wastes and to maintain and/or increase soil fertility.

scholarly journals Antioxidant Capacity, Total Phenols, Total Flavonoids and Colour Component of Cornelian Cherry (Cornus mas L.) Wild Genotypes

2018 ◽  
Vol 47 (2) ◽  
pp. 390-394 ◽  
Author(s):  
Sina N. COSMULESCU ◽  
Ion TRANDAFIR ◽  
Felicia CORNESCU
Keyword(s):  
Antioxidant Capacity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Total Flavonoids ◽  
Blue Color ◽  
Total Phenols ◽  
Cornelian Cherry ◽  
Color Component ◽  
Cornus Mas

A number of selected cornelian cherry wild genotypes were investigated regarding antioxidant capacity, total phenols, total flavonoids and colour component. The total phenolic, total flavonoids and antioxidant activity of methanol extract of cornelian cherry fruits were determined using Folin-Ciocalteu, colorimetric and DPPH methods, respectively. Total phenolic content ranged from 163.69 (S1) to 359.28 (H2) mg GAE 100 g-1 FW. Genotypes H2 and H3 had the highest total phenolic content (359.28 and 343.50 mg GAE 100 g-1 FW, respectively), total flavonoids (54.26 and 64.48 mg QE 100 g-1 FW, respectively) and antioxidant capacity (2.39 and 2.71 mmolTrolox100g-1 FW, respectively). Significant differences of yellow/blue color component (b*), red/ green (a*) color component, values of lightness (L*) and chroma (C) were obtained for extracts from fruits. The present study shows the potential of certain cornelian cherry genotypes as valuable source of natural antioxidants and gene stock for breeding programs.

scholarly journals Drying Temperature Effect on Total Phenols and Flavonoids Content, and Antioxidant Activity of Borassus aethiopum Mart Ripe Fruits’ Pulp

2017 ◽  
Vol 6 (2) ◽  
pp. 50 ◽  
Author(s):  
Tagouelbe Tiho ◽  
Jean Claude N'guessan Yao ◽  
Casimir Yao Brou ◽  
Augustin Amissa Adima
Keyword(s):  
Antioxidant Activity ◽  
Aqueous Acetone ◽  
Total Flavonoids ◽  
Distilled Water ◽  
Total Phenols ◽  
Aqueous Methanol ◽  
Drying Temperature ◽  
Total Flavonoids Content ◽  
Main Effects ◽  
Borassus Aethiopum

We assessed the total phenols content (TPC) by Folin-Ciocalteux method, total flavonoids content (TFC), and antioxidant activity (AOA) using ABTS radical cation of Borassus aethiopum Mart ripe fruits; uniquely its pulp was considered. Fresh and dried at 40, 50, 60, 70 and 80oC pulps were analyzed, through maceration and decoction, and distilled water (DW), aqueous acetone (DW+Aceto, DW/acetone, 30/70, v/v) and aqueous methanol (DW+Meth) prepared in the same way were used. Though 80oC product extracted through decoction delivered the highest extracts of TPC with DW, DW+Aceto and DW+Meth, 654.434, 780.066 and 729.934 mg GAE/g respectively; we could not retain it as the best. Very likely, the sugars were caramelizing and the derived product had an intense brown color. Whereas, at 70oC, TPCs were 447.866, 337.334 and 327.066 mg GAE/g, respectively, by decoction and in the same above solvents order. The best extract obtained with DW was statistically different from that of DW + Aceto and DW + Meth, which were not significantly different from each other, with Duncan least squares means comparison test in a confidence interval of 99%. The corresponding TFCs and AOAs were (59.34, 68.34, and 51.66 mg QE/g) and (0.4404, 0.52088, and 0.6524 µmol TE/g). The flour has a nice chocolate color. Except 60oC, an increase of the drying temperature leaded to a rising amount of TPC. Taking each factor, the extraction mode and drying temperature were main effects for extracts (p< 0.0001). The overall regression analysis showed significant correlation coefficient between TPC and AOA, with R2=0.8394.

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 Peach, Apple, and Pear Fruit Quality: To Peel or Not to Peel?

Horticulturae ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 85
Author(s):  
Michail Michailidis ◽  
Evangelos Karagiannis ◽  
Elpida Nasiopoulou ◽  
Christina Skodra ◽  
Athanassios Molassiotis ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Dry Matter ◽  
Prunus Persica ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Pyrus Pyrifolia ◽  
Total Phenols ◽  
Fruit Peel ◽  
Solids Concentration ◽  
High Level

The nutritional value of the peeled and unpeeled fruit (peel plus flesh tissues) was studied using four peach (Prunus persica L.; Red Heaven, Maria Blanca, Big Top, and Queen Giant), two pear (Pyrus communis L.; Santa Maria, Pyrus pyrifolia N.; Nashi), and three apple (Malus domestica Borkh.; Gala, Granny Smith, and Red Chief) cultivars. Based on principal components analysis (PCA) models, there was a clear differentiation among the cultivars’ and the peeled fruits’ nutritional characteristics in comparison to the unpeeled ones. Increased antioxidant capacity and content of total phenols and flavonoids of peaches (Red Heaven and Maria Blanca) versus nectarines (Big Top and Queen Giant) were recorded. In contrast, nectarines were characterized by higher hydroxycinnamates and dry matter. The apples’ cultivar Granny Smith exhibited a high level of titratable acidity (TA), while the Gala displayed a high level of soluble solids concentration (SSC), carotenoids, dry matter, hydroxycinnamic acids, and flavonols at the unpeeled fruit, whereas the Red Chief by increased anthocyanins, antioxidant capacity, total phenols, and flavonoids. Nashi pears with peel were more beneficial due to the strong skin contribution in the fruits’ beneficial compounds content. The peel of the Granny Smith cultivar was associated with an increased level of P, K, Ca, and Mg, whereas that of Red Chief with increased anthocyanins and Mg content.

scholarly journals Antioxidant Capacity and Nutritional Value of Potato Tubers (Solanum tuberosum L.) as a Dependence of Growing Conditions and Long-Term Storage

Agriculture ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 21
Author(s):  
Dorota Wichrowska
Keyword(s):  
Antioxidant Capacity ◽  
Chlorogenic Acid ◽  
Solanum Tuberosum L ◽  
Interactive Effect ◽  
Potato Tubers ◽  
Organic Fertilization ◽  
Mineral Fertilization ◽  
Total Polyphenols ◽  
Npk Fertilizers ◽  
Full Dose

The aim of the study was to assess the interactive effect of the use of bio-fertilizer and organic matter brought into the soil, as well as to limit the use of mineral fertilization on the content of bioactive compounds in potato tubers cultivar ‘Satina’. The test results show a positive effect of the applied bio-fertilizer in all tested variants of organic fertilization (straw, fodder pea, manure) on the level of the tested compounds. Comparing the content of crude protein in tubers from plots where half the dose of mineral fertilization was applied, the use of bio-fertilizer increased the content of this component, especially after using straw. After 6 months of storage, organic fertilization had no significant effect on the protein content, while significant differences were found in tubers fertilized with mineral, in favor of the full dose of NPK fertilizers. The storage time increased the content of tyrosine, leucine, lysine, alanine, glutamic acid, and total AA, and also methionine, aspartic acid, and asparagine, while the content of isoleucine and phenyl-alanine decreased. The highest content of total polyphenols was found in tubers where the plots were covered with pea application, a full dose of mineral fertilizer, and the use of bio-fertilizer. Unfortunately, after 6 months of storage, potato tubers from plots fertilized with peas, especially those fertilized with half the dose of mineral fertilization and without the use of biofertilizer, significantly lost the most total polyphenols. Similar relationships were obtained for the level of chlorogenic acid in tubers, which is significantly correlated with the content of polyphenols, but only organic fertilization in the form of peas significantly increased the concentration of chlorogenic acid. On the other hand, the highest post-harvest antioxidant activity was characteristic of tubers from plots fertilized with manure, with a full dose of mineral fertilization and biofertilizer. During the 6-month storage, there was a decrease in the antioxidant capacity, on average 12.4% for the objects. This may indicate the influence of polyphenolic compounds as well as other antioxidants on the assessed trait.

scholarly journals N2O emission and nitrogen and carbon leaching from the soil in relation to long-term and current mineral and organic fertilization – a laboratory study  

2017 ◽  
Vol 63 (No. 3) ◽  
pp. 97-104 ◽  
Author(s):  
Sosulski Tomasz ◽  
Szara Ewa ◽  
Szymańska Magdalena ◽  
Stępień Wojciech
Keyword(s):  
Agricultural Soils ◽  
Farmyard Manure ◽  
Term Treatment ◽  
Organic Fertilizers ◽  
Recent Application ◽  
Single Application ◽  
Organic Fertilization ◽  
Mineral Fertilization ◽  
Long Term Treatment

The paper presents the results of a laboratory experiment aimed at the assessment of N<sub>2</sub>O emissions, NO<sub>3</sub><sup>–</sup>, NH<sub>4</sub><sup>+</sup> and carbon (C) leaching from agricultural soils subjected to long-term mineral and organic fertilization. Our results show that long-term treatment impacts the N<sub>2</sub>O emissions from loamy-sand Luvisols to a greater extent than the recent single application of mineral or organic fertilizers. The N<sub>2</sub>O fluxes from soils with higher C<sub>org</sub> content that results from long-term organic fertilization exceed those from soils with lower C<sub>org</sub> content subsequent to long-term mineral fertilization. Our research confirms previous reports that the intensity of N<sub>2</sub>O emission is related to soil moisture. The NO<sub>3</sub><sup>–</sup> leaching depended on the recent application of fertilizers with a stronger influence of single application of NH<sub>4</sub>NO<sub>3</sub> than farmyard manure. Long-term fertilization did not impact the NO<sub>3</sub><sup>–</sup> leaching.  

scholarly journals Yield, quality and nutrient accumulation in watermelon as a function of organo-mineral fertilization

2019 ◽  
Vol 10 (1) ◽  
pp. 141-149
Author(s):  
Francisco Sales Oliveira Filho ◽  
Francisco Hevilásio Freire Pereira ◽  
Marcos Eric Barbosa Brito ◽  
Joyce Emanuele Medeiros ◽  
Francisco Hélio Dantas Lacerda ◽  
...  
Keyword(s):  
Experimental Design ◽  
Organic Fertilizer ◽  
Titratable Acidity ◽  
Organic Fertilizers ◽  
Soluble Solids ◽  
Nutrient Concentrations ◽  
Nutrient Accumulation ◽  
Mineral Fertilization ◽  
Yield Quality

The study aimed to assess the yield, nutrients accumulation and fruit quality of watermelon grown under different NPK rates provided by mineral and organic fertilizers. The experiment was performed at the Federal University of Campina Grande (UFCG), Campus Pombal-PB, during the period from June to September 2013. Treatments consisted of three nutrient concentrations N, P and K (50, 100 and 150% of NPK recommendation for watermelon) and five ratios of mineral and organic fertilizer (100/0, 75/25, 50/50, 25 / 75 to 0/100). The experimental design was in randomized blocks, in a 3x5 factorial scheme with four replicates. The NPK rate corresponding to 100% was 120 kg ha-1 respectively for N, P and K. The following variables were evaluated: fruit yield, nutrient accumulation, titratable acidity, soluble solids and ratio between soluble solids and titratable acidity. The concentration of 150% of nutrients was more effective in increasing the yield for the 75/25, 25/75 and 0/100 ratios of mineral and organic fertilizers, and the concentrations of 100 and 150% were the most effective in the accumulation of soluble solids when applied in the mineral and organic fertilizer ratios of 75/25 and 50/50.

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