scholarly journals Contents of dry matter, soluble sol­ids, vitamin C and phenolic compounds in the pulp and peel of different cultivars of pear fruits

2021 ◽  
Vol 28 (2) ◽  
Author(s):  
Jaunė Blažytė ◽  
Nijolė Vaitkevičienė
Keyword(s):  
Phenolic Compounds ◽  
Vitamin C ◽  
Dry Matter ◽  
Total Content ◽  
Biologically Active ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Pear Fruit ◽  
Fruit Peel

The aim of this work was to investigate and compare the amounts of biologically active compounds, dry matter and soluble solids in pulp and peels of four pear cultivars (‘Ksena’, ‘Beloruskaja pozdniaja’, ‘Alna’ and ‘Aleksandr Lucas’). The research was carried out at Vytautas Magnus University Agriculture Academy (Lithuania) in 2020. Four pear cultivars (‘Ksena’, ‘Beloruskaja pozdniaja’, ‘Alna’ and ‘Aleksandr Lucas’) were cultivated at a farm in the Joniškis District of Lithuania. Pears were grown following traditional pear production technology. The amounts of dry matter, soluble solids, vitamin C and fiber were determined using the standard method. The total content of phenolic compounds was determined using a Folin-Ciocalteu reagent with a UV/VIS spectrophotometer. The research results showed that significantly the highest amounts of soluble solids were found in the ‘Alna’ pear fruit pulp (14.25% f. w.). The ‘Alna’ peel sample had significantly the highest amount of total phenolic compounds (1290.99 mg 100 g–1 d. w.). The highest content of dry matter was found in the ‘Aleksandr Lucas’ pear fruit peel (24.67%). The ‘Aleksandr Lucas’ and ‘Beloruskaja pozdniaja’ pear fruit peel contained significantly the highest amounts of vitamin C (2.70 and 2.63 mg 100 g–1 f. w., respectively). The highest content of fiber was found in the ‘Ksena’ fruit peel (36.12% d. w.). The investigated pear peel sample had significantly higher amounts of dry matter, vitamin C, total phenolic compounds and fiber than the pulp. However, the pulp contains the highest contents of soluble solids.

Characteristics of the raw fruit, industrial pulp, and commercial jam elaborated with Spanish quince (Cydonia oblonga Miller)

2020 ◽  
pp. 623
Author(s):  
Esther Vidal Cascales ◽  
José María Ros García
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Vitamin C ◽  
Water Activity ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Microbiological Analysis ◽  
Total Phenolic Compounds ◽  
And Storage

Quince fruit and two industrial derivates (pulp and jam) were characterized from physicochemical, nutritional and microbiological viewpoint. Quinces were collected at maturity (September) in Murcia (Spain). Quinces were converted at a processing factory in pulp (intermediate product) and, in the same factory, this pulp was transformed in jam. The pH, soluble solids, acidity, color, moisture, water activity, total phenolic compounds, antioxidant activity, vitamin C and flavonoids were measured for all samples, while for microbiological analysis was only used quince jam. There were significant differences among quince fruit, industrial pulp and commercial jam. Processing caused pH, moisture and water activity decrease, while soluble solids increase. Total phenolic compounds and antioxidant activity increased in the pulp and in the jam. The effect of cooking and storage was a decrease of vitamin C and flavonoids in the jam. Quince jam presented a total number of molds and yeasts lower than 2 log cfu/g. Although the production parameters affect to the quality of the quince jam, it is a sensory attractive food with healthy properties.

scholarly journals INHIBITION OF PHOSPHATIDYLCHOLINE LIPOSOMES OXIDATION BY PHENOLIC COMPOUNDS OF ALOE EXTRACTS: A. ARBORESCENS, A. PILLANSII AND A. SQUARROSA

2019 ◽  
pp. 83-90 ◽  
Author(s):  
Natalia Nikolaevna Sazhina ◽  
Petr Vladimirovich Lapshin ◽  
Natal'ya Viktorovna Zagoskina ◽  
Nadezhda Pavlovna Palmina
Keyword(s):  
Phenolic Compounds ◽  
Biological Activities ◽  
Total Content ◽  
Biological Properties ◽  
Biologically Active ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Phosphatidylcholine Liposomes ◽  
Antioxidant Profile ◽  
Active Substances

Various species of the genus Aloe which there are in the world more than 500 are considered as important sources of biologically active substances and attract an attention of researchers by numerous manifestations of their biological properties. The most studied and used Aloe species are A. arborescens and A. vera, however some other species show not smaller biological activity, in particular antioxidant, than made mention. In the present work on model of the initiated oxidation of phosphatidylcholine liposomes comparison of the antioxidant activity (AOA) of leaves extracts of A. arborescens, A. pillansii, A. squarrosa and also the total content of their phenolic compounds was carried out. It is established that A. pillansii extract has approximately by 12 times higher AOA, than A. arborescens extract, and by 4 times, than A. squarrosa. The measured values of the total phenolic compounds content showed considerably smaller difference between these extracts. It can demonstrate existence in A. pillansii leaves of more difficult antioxidant profile, than in A. arborescens, and higher concentration of active phenolic metabolites. Results of this work allow recommending A. pillansii for more depth studies of its different biological activities.

scholarly journals Kumquat (Fortunella margarita): A Good Alternative for the Ingestion of Nutrients and Bioactive Compounds

Proceedings ◽  
2020 ◽  
Vol 70 (1) ◽  
pp. 105
Author(s):  
Clarice Silva e Souza ◽  
Pamella Cristine Anunciação ◽  
Ceres Mattos Della Lucia ◽  
Rosana Gonçalves Rodrigues das Dôres ◽  
Regina Célia Rodrigues de Miranda Milagres ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Dietary Fiber ◽  
Inductively Coupled Plasma ◽  
Soluble Solids ◽  
Emission Spectrometry ◽  
Total Phenolic ◽  
High Concentration ◽  
Fruit Peel ◽  
Total Dietary Fiber

Citrus fruit is preferred in the choice of consumers. Kumquat (F. margarita) is an unconventional citrus of increasing consumer interest because of its exotic flavor, and its functional potential that offers health benefits to consumers. It is a fruit traditionally consumed by whole fruit (peel and pulp), giving this fruit a distinctive flavor. For this reason, this study analyzed the physical, chemical, and nutritional characteristics of kumquat (peel and pulp). The physicochemical analysis was performed according to the Adolfo Lutz Institute. Analysis of moisture, ashes, macronutrients, and total dietary fiber was carried out according to AOAC. Minerals were analyzed by inductively coupled plasma optical emission spectrometry. Vitamins C and E, carotenoids and flavonoids were analyzed by HPLC. Phenolic compounds (Folin-Ciocalteu) and antioxidant capacity (DPPH) were determined by spectrophotometry. The kumquat had low pH, soluble solids content and low caloric value. It was a source of dietary fiber, minerals (K, Ca, P, Mg) and carotenoids; the most expressive was α-carotene (661.81 μg 100 g−1). The ascorbic acid concentration was 2326.24 μg 100 g−1. α-tocopherol (569.00 μg 100 g−1) was the most expressive component of vitamin E. There was a presence of apigenin and eriodictyol. The fruit (peel and pulp) has a high concentration of total phenolic compounds (98.55 ± 1.93 mg GAE 100 g−1) and good antioxidant capacity (62%) was found. Kumquat is a good source of fiber and vitamin A, and due to its antioxidant capacity and the presence of other essential and beneficial nutrients for a diet, consumption of kumquat can be suggested to complement the diet. This fruit is a viable food alternative, and its consumption should be encouraged, contributing a source of income, sovereignty, and food security.

scholarly journals Quality characterization, phenolic and carotenoid content of new orange, cream and yellow-fleshed sweetpotato genotypes

2021 ◽  
Vol 39 (3) ◽  
pp. 299-304
Author(s):  
Lucimeire Pilon ◽  
Jaqueline S Guedes ◽  
Bruna S Bitencourt ◽  
Raphael Augusto de C Melo ◽  
Larissa PC Vendrame ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Ipomoea Batatas ◽  
Dry Matter ◽  
Matter Content ◽  
Soluble Solids ◽  
Carotenoid Content ◽  
Total Phenolic ◽  
Dry Matter Content ◽  
Total Carotenoids ◽  
Β Carotene

ABSTRACT Sweetpotato (Ipomoea batatas) is a root crop grown in many countries. This tuberous root is a source of energy, nutrients, and phytochemicals. In this study, bioactive compounds and physical and physicochemical qualities of sweetpotato genotypes were evaluated. Eight new genotypes of sweetpotato produced by Embrapa Hortaliças (orange-fleshed: MD09026-OF and MD09024-OF; cream-fleshed: MD09011-CF, MD09004-CF, MD10039-CF, and MD10004-CF; yellow-fleshed: MD09017-YF and MD12002-YF) and two cultivars used as controls (Beauregard and Brazlândia Roxa) were evaluated for color, soluble solids, dry matter, phenolic compounds, total carotenoids and β-carotene. Hue angles differed even between those sweetpotatoes with the same flesh color. The orange-fleshed genotypes MD09024-OF, MD09026-OF, and Beauregard, had the lowest L*, showing to be darker than the others. These sweetpotatoes also had the brightest flesh colors with higher C*. The orange-fleshed genotypes MD09026-OF and MD09024-OF were sweeter (10.55oBrix and 9.23oBrix) than Beauregard (5.12oBrix). Brazlândia Roxa had the highest dry matter content (38.05%), followed by the genotypes MD10004-CF, MD09017-YF, MD09026-OF MD10039-CF, and MD09011-CF, which showed similarity, ranging from 32.33% to 29.12%. The highest contents of total carotenoids were found for the orange-fleshed genotypes MD09026-OF (80.06 mg g-1) and MD09024-OF (70.56 mg g-1) and Beauregard (73.12 mg g-1). These same genotypes showed the highest total phenolic compounds (0.815 mg g-1 and 0.686 mg g-1, respectively). MD09026-OF showed the highest content of β-carotene (46.47 mg g-1). MD09026-OF was the most prominent genotype among those evaluated, as it showed the highest total carotenoid, β-carotene, phenolic compounds, and soluble solids content, in addition to a high dry matter content.

scholarly journals Evaluation of different methodologies for the determination of phenolic compounds in tropical fruits

2020 ◽  
Vol 23 ◽  
Author(s):  
Karina Carvalho Guimarães ◽  
Derlyene Lucas Salgado ◽  
Elisângela Elena Nunes Carvalho
Keyword(s):  
Phenolic Compounds ◽  
Vitamin C ◽  
Fruits And Vegetables ◽  
Titratable Acidity ◽  
Natural Antioxidants ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Fast Blue ◽  
Recent Method

Abstract Phenolic compounds are natural antioxidants and can be found with abundance in fruits and vegetables. One of the first methods created for analyzing phenolic compounds was the Folin-Denis method; and hereafter, the Folin Ciocalteu method was developed and recently, one of the most recent method is the Fast Blue. Due to the importance of these compounds in food, this work aimed to determine the total phenolic compounds in three fruits, such as: Passion Fruit, “Palmer” mango and “Pera” orange. In addition, these fruits were analyzed through three different determination methods. Furthermore, the content of vitamin C, soluble solids, titratable acidity and pH of these fruits were evaluated. Based on the results, it was verified that there was no difference among the values of vitamin C, soluble solids and TA in relation to those found in the literature. When comparing the three methods (Fast Blue BB, Folin-Ciocalteu Reagent and Folin-Denis Reagent), the results showed a difference in the phenolic compounds that may be related to the distinct reagents used in each method and its different action.

scholarly journals Bioactive Compounds and Total Sugar Contents of Different Open-Pollinated Beetroot Genotypes Grown Organically

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 4884
Author(s):  
Khadijeh Yasaminshirazi ◽  
Jens Hartung ◽  
Michael Fleck ◽  
Simone Graeff-Hoenninger
Keyword(s):  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Dry Matter ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Organic Production ◽  
Nitrate Content ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Total Soluble Sugar

The growing interest of consumers in healthy organic products has increased the attention to the organic production of beetroot. In this regard, six field experiments were conducted in 2017 and 2018 in three different locations under the specific conditions of organic agriculture, and fifteen beetroot genotypes, including one F1 hybrid as a commercial control and one breeding line, were compared regarding the content of the total dry matter, total soluble sugar, nitrate, betalain, and total phenolic compounds in order to investigate the genetic potential of new and existing open-pollinated genotypes of beetroot regarding the content of their bioactive compounds. The results of this study indicated a significant impact of genotype (p < 0.05) on all measured compounds. Furthermore, results revealed a significant influence of the interactions of location × year (p < 0.05) on the beetroot composition, and, thus, the role of environmental conditions for the formation of tested compounds. The total dry matter content (TDMC) of beetroots varied between 14.12% and 17.50%. The genotype ‘Nochowski’, which possessed the highest total soluble sugar content with 14.67 °Bx (Brix), was among the genotypes with the lowest nitrate content. On the contrary, the cylindrical-shaped genotype ‘Carillon RZ’ (Rijk Zwaan), indicated the lowest sugar content and the highest nitrate concentration. The amount of total phenolic compounds ranged between 352.46 ± 28.24 mg GAE 100 g−1 DW (milligrams of gallic acid equivalents per 100 g of dry weight) and 489.06 ± 28.24 mg GAE 100 g−1 DW for the red-colored genotypes which is correlated with the high antioxidant capacity of the investigated genotypes. Due to the specifics of the required content of bioactive compounds for various products, the selection of suitable genotypes should be aligned with the intended final utilization.

scholarly journals Ferulic and coumaric acids, total phenolic compounds and their correlation in selected oat genotypes

2008 ◽  
Vol 25 (No. 6) ◽  
pp. 325-332 ◽  
Author(s):  
M. Kováčová ◽  
E. Malinová
Keyword(s):  
Phenolic Compounds ◽  
Ferulic Acid ◽  
Functional Foods ◽  
Slovak Republic ◽  
Total Content ◽  
Climatic Conditions ◽  
Plant Production ◽  
Total Phenolic ◽  
Coumaric Acid ◽  
Total Phenolic Compounds

Ferulic and coumaric acids were determined by high-performance liquid chromatography in 21 oat genotypes supplied from the gene bank of the Research Institute of Plant Production in Piešťany (Slovak Republic) with the aim of selecting some genotypes suitable for the preparation of functional foods. The content of coumaric acid was higher than that of ferulic acid in 61.9% of samples. The latter acid exceeded proportionally the former one in genotypes with a low content of phenolic acids, namely in the amount of up to 50 mg/100 g of grain, especially in chaffless oats. Ferulic acid content varied in the range from 16.50 mg/100 g (cultivar Jakub) to 149.36 mg/100 g of grain (cultivar Izak). The content of coumaric acid ranged between 8.05 mg/100 g (cultivar Detvan) and 210.27 mg/100 g of grain (cultivar Izak). The fact that the samples were grown in the same year (2003) in one locality (Vígľaš-Pstruša, Slovak Republic) minimises the influence of soil and climatic conditions and proves that remarkable differences between the content of ferulic and coumaric acids and the total content of phenolic compounds were caused by the genetic outfit of oats. A high correlation was found between the contents of the total phenolic compounds, ferulic acid, coumaric acid and their sum. The corresponding correlation coefficients R had the values of 0.9229, 0.9141, and 0.9211, respectively. This correlation enables one to employ a simple and inexpensive method for the determination of the total phenolic compounds using Folin-Ciocalteu reagent for a rapid assessment of differences detectable in the content of the sum of ferulic and coumaric acids in oat samples in view of the selection of genotypes suitable for the preparation of functional foods.

scholarly journals Ripe Ora-pro-nobis (Pereskia aculeata miller) fruits express high contents of bioactive compounds and antioxidant capacity

2018 ◽  
Vol 40 (3) ◽  
Author(s):  
Aline Priscilla Gomes da Silva ◽  
Poliana Cristina Spricigo ◽  
Thais Pádua de Freitas ◽  
Thiago Machado da Silva Acioly ◽  
Severino Matias de Alencar ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Maturity Stage ◽  
Total Phenolic Compounds ◽  
Total Carotenoids ◽  
Significant Difference

Abstract Pereskia aculeata Miller is a native cactaceae found from the Northeast to the South of Brazil. This plant is recognized by the high nutritional value of their leaves, which are the most used in cooking and folk medicine. However, studies on the chemical characteristics and antioxidant capacity of the ora-pro-nobis fruits are scarce. Therefore, the aim of this study was to determine the best harvest point of the ora-pro-nobis fruits to optimize the content of bioactive compounds and their antioxidant capacity. The fruits were manually harvested, defined by their peel colors in three maturity stages: unripe (green), intermediate (yellowish green), and ripe (yellow) stages. The following attributes were evaluated: soluble solids (SS), titratable acidity (TA), SS/TA ratio, pH, and content of bioactive compounds, such as total chlorophylls, carotenoids, yellow flavonoids, total phenolic compounds, and antioxidant capacity. There was a decrease in the content of chlorophyll followed by an increase in the of total carotenoids and yellow flavonoids, due to the maturity stage. For the total phenolic compounds, it was not observed significant difference between the stages. The antioxidant capacity was quantified by the ORAC method in lyophilized pulp in the unripe (1.95 mmol 100 g-1 trolox) and ripe (3.85 mmol 100 g-1 trolox) stages. The lowest contents were observed in the intermediate (0.80 mmol 100 g-1 trolox in lyophilized pulp) stage. The maturity stage significantly influenced the bioactive compounds of ora-pro-nobis, which presented higher values of total carotenoids, yellow flavonoids, and antioxidant capacity in ripe fruits.

scholarly journals Development of a technology for the production of snacks based on blackcurrant berries (Ribes nigrum)

2019 ◽  
Vol 81 (3) ◽  
pp. 158-167
Author(s):  
N. V. Makarova ◽  
D. F. Ignatova ◽  
E. A. Vasileva ◽  
Y. I. Solina ◽  
E. A. Eliseeva
Keyword(s):  
Vitamin C ◽  
Dietary Fiber ◽  
Total Content ◽  
Titratable Acidity ◽  
Biologically Active ◽  
Total Phenolic ◽  
Organoleptic Characteristics ◽  
Freeze Dried ◽  
Dpph Method ◽  
Phenolic Substances

Interest in the consumption of berries is largely due to the content of biologically active substances in them and their importance as dietary antioxidants. Polyphenolic compounds found in blackcurrant berries are known as agents that act prophylactically and therapeutically on the human body. The following were determined: total content of phenolic substances, flavonoids, anti-radical activity according to the DPPH method, restoring power according to the FRAP method, anthocyanins, organoleptic characteristics, dietary fiber content, vitamin C content for feedstock, semi-finished products (blackcurrant berries, blackcurrant puree, two types freeze-dried snacks from blackcurrant berries). According to the results of the study, it was found that the freeze-dried berry (snacks of two types of freeze-drying) showed good results: 42.05 mmol Fe2 +/1 kg (snacks with a structure-forming agent, 5% pectin), 38.6 mmol Fe2 +/1 kg ( snacks) restoring power according to the FRAP method, 47.1 Ec 50 mg/ml (snacks), 79.4 Ec 50 mg/ml (snacks with a builder, pectin 5%) anti-radical activity according to the DPPH method, 766 mg HA/100 g ( snacks), 835 mg HA/100 g (snacks with a builder, pectin 5%) total phenolic content, 374 mg K/100 g (snacks), 392 mg K/100 g (snacks with by a touring agent, 5% pectin) total flavonoid content, 166.07 mg CG/100 g (snacks), 174.21 mg CG/100 g (snacks with a structuring agent, 5% pectin) anthocyanins content, 50.1% (snacks), 66.9% (snacks with a builder, pectin 5%) vitamin C content, 76.8% (snacks), 90% (snacks with a builder, pectin 5%) dietary fiber, 1.92% (snacks), 2.13 % (snacks with a builder, pectin 5%) – titratable acidity. Thus, we can conclude that vacuum drying provides samples with good physicochemical properties and is better than a dried sample.

scholarly journals Cambuci: a native fruit from the Brazilian Atlantic forest showed nutraceutical characteristics

2018 ◽  
Vol 40 (5) ◽  
Author(s):  
Tatiane de Oliveira Tokairin ◽  
Aline Priscilla Gomes da Silva ◽  
Poliana Cristina Spricigo ◽  
Severino Matias de Alencar ◽  
Angelo Pedro Jacomino
Keyword(s):  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Atlantic Forest ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Brazilian Atlantic Forest ◽  
Fruit Pulp ◽  
Total Phenolic Compounds ◽  
Fresh Weight

Abstract The Atlantic Forest is recognized as a biome rich in biodiversity. Cambuci trees (Campomanesia phaea) produce fruits that may be consumed as both fresh and processed forms but are still underutilized. The aim of this study was to describe the physicochemical characteristics and bioactive compounds in cambuci fruits from Brazilian Atlantic Forest, located at Natividade da Serra-SP, Brazil. Cambuci fruits of the fifty-nine accessions were characterized according to fresh weight, pulp yield, peel percentage, longitudinal and transversal diameters (LD and TD, respectively), pH, soluble solids content (SSC), titratable acidity (TA), SSC/TA ratio, ascorbic acid, total phenolic compounds content, and antioxidant activity using the DPPH assay. The soluble solids contents varied from 5.10 °Brix to 11.00 °Brix. The titratable acidity varied from 1.29 to 2.90 g citric acid 100 g-1. Ascorbic acid content was of 31.12 to 139.38 mg 100 g-1. Total phenolic compounds varied from 330.5 mg GAE 100 g-1 to 3,526.04 mg GAE 100 g-1. The antioxidant activity was of 65.03 µmol Trolox g-1 fruit pulp (fresh weight) to 199.78 µmol Trolox g-1 fruit pulp (fresh weight), a factor of 6.7 difference between the extremes. These results showed cambuci fruits presented as rich source of ascorbic acid, total phenolic compounds, and with high antioxidant capacity.

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