scholarly journals Effect of the Addition of Different Vegetal Mixtures on the Nutritional, Functional, and Sensorial Properties of Snacks Based on Pseudocereals

Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2271
Author(s):  
Ana Karen González-Calderón ◽  
Natalia Alejandra García-Flores ◽  
Ana Sofía Elizondo-Rodríguez ◽  
Mariana Zavala-López ◽  
Silverio García-Lara ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Functional Foods ◽  
Antioxidant Activities ◽  
Coconut Oil ◽  
Dry Weight ◽  
Oxygen Radical ◽  
Sensorial Attributes ◽  
Hedonic Scale ◽  
Selection Of

Quick meals available in markets are popular among consumers. Generally, these products are not recognized as functional foods owing to nutrient-poor composition. In this study, energy snack bars were developed with different formulations, using puffed quinoa, amaranth, cacao liquor, and coconut oil, and the effects of the addition of commercial vegetal mixtures (VM) on nutritional and functional properties were assessed. VM addition showed significant effects on the protein, lipid, and fiber contents, phenolic compounds (PHC) content, and antioxidant activity of the snacks. The control snack showed higher levels of free and bound PHC. The oxygen radical absorbance capacity (ORAC) analyses recorded highest values of free PHC (9392.7 μmol TE/100 g dry weight) in PC65 (concentrate based on a combination of vegetal proteins), whereas the highest bound PHC levels of 47,087 and 46,531 μmol TE/100 g dry weight were observed in PC65 and the control snacks, respectively. Sensorial attributes assessment provided a high score on the hedonic scale, wherein panelists detected no differences among the samples. Altogether, the selection of non-conventional ingredients with high antioxidant activities emerged as a successful strategy to produce sensory acceptable meals.

scholarly journals Germinated Buckwheat: Effects of Dehulling on Phenolics Profile and Antioxidant Activity of Buckwheat Seeds

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 740
Author(s):  
Andrej Živković ◽  
Tomaž Polak ◽  
Blaž Cigić ◽  
Tomaž Požrl
Keyword(s):  
Mass Spectrometry ◽  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Functional Foods ◽  
Phenolic Content ◽  
Germination Rate ◽  
Dry Weight ◽  
Total Phenolic ◽  
Negative Effects ◽  
Germinated Seeds

The aim was to investigate the effects of the cold dehulling of buckwheat seeds on their germination, total phenolic content (TPC), antioxidant activity (AA) and phenolics composition. Cold dehulling had no negative effects on germination rate and resulted in faster rootlet growth compared to hulled seeds. Although the dehulling of the seeds significantly decreased TPC and AA, the germination of dehulled seeds resulted in 1.8-fold and 1.9-fold higher TPC and AA compared to hulled seeds. Liquid chromatography coupled to mass spectrometry identified several phenolic compounds in free and bound forms. Rutin was the major compound in hulled seeds (98 µg/g dry weight), orientin and vitexin in 96-h germinated dehulled seeds (2205, 1869 µg/g dry weight, respectively). During germination, the increases in the major phenolic compounds were around two orders of magnitude, which were greater than the increases for TPC and AA. As well as orientin and vitexin, high levels of other phenolic compounds were detected for dehulled germinated seeds (e.g., isoorientin, rutin; 1402, 967 µg/g dry weight, respectively). These data show that dehulled germinated seeds of buckwheat have great potential for use in functional foods as a dietary source of phenolic compounds with health benefits.

scholarly journals Comparison of free and bound phenolic compositions and antioxidant activities of leaves from different mulberry varieties

BMC Chemistry ◽  
2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Zhenjiang Wang ◽  
Cuiming Tang ◽  
Gengsheng Xiao ◽  
Fanwei Dai ◽  
Sen Lin ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Chlorogenic Acid ◽  
Antioxidant Activities ◽  
Syringic Acid ◽  
Mulberry Leaves ◽  
Phenolic Substances ◽  
Further Development ◽  
Active Substances ◽  
Phenolic Extracts

AbstractMulberry leaves are used in traditional Chinese medicine and contain numerous active substances that are known to be beneficial for human health. The aim of this study was to investigate the phenolic compositions and antioxidant activities of the leaves from 23 mulberry cultivars. Qualitative LC-ESI-QTOF analysis revealed the presence of 11 phenolic compounds in the free phenolic extracts and 10 phenolic compounds in the bound fractions. Chlorogenic acid and caffeic acid were the major components in the free and bound fractions, respectively. The results revealed that the changguosang cultivar from Taiwan contained the greatest content of phenolic compounds as well as the highest antioxidant activity among the 23 cultivars examined, as determined using three separate antioxidant assays. The isoquercitrin, chlorogenic acid, and rutin contents of the free phenolic extracts displayed significant correlations with the antioxidant activities, while syringic acid and rutin were the main contributors to the antioxidant activities of the bound phenolic fractions. The obtained results demonstrate that mulberry leaves contain a variety of beneficial phenolic substances and may be suitable for further development as a herbal medicine.

scholarly journals Antioxidant Compounds, Mineral Content and Antioxidant Activity of Several Tomato Cultivars Grown in Southwestern Romania

2013 ◽  
Vol 41 (1) ◽  
pp. 136 ◽  
Author(s):  
Violeta NOUR ◽  
Ion TRANDAFIR ◽  
Mira E. IONICA
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Trace Elements ◽  
Phenolic Compounds ◽  
Total Phenolics ◽  
Antioxidant Activities ◽  
Fruit Shape ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Tomato Cultivars

Ten indeterminate tomato cultivars differing in fruit shape and typology, grown simultaneously in a greenhouse from Oltenia (Southwestern Romania) and harvested at red ripe stage, were investigated for the contents in ascorbic acid, lycopene, β-carotene, total phenolics, minerals (K, Na, Ca and Mg) and trace elements (Fe, Cu, Mn, Cr, Zn and B). In addition, their antioxidant activities were determined. Significant differences were found among tomato cultivars in all studied antioxidant compounds, as well as in the antioxidant activity. Ascorbic acid ranged from 91.9 to 329.7 mg kg-1 fw, lycopene ranged from 19.7 to 49.0 mg kg-1 fw, while total phenolic compounds varied between 300.2 and 557.8 mg kg-1 fw. Antioxidant activity ranged from 0.81 mmol Trolox kg-1 fw to 1.74 mmol Trolox kg-1 fw and it was significantly correlated to total phenolics content (r = 0.91; p< 0.05). The cocktail type cultivar ‘Tiger’ and the cherry type cultivar ‘Belle’ proved to be the most powerful in antioxidant activity and phenolic compounds while the rectangular plum shaped cultivar ‘Porto’ recorded the highest average lycopene content. A valuable cultivar proved to be the brownish red ‘Sacher’ which registered among the highest contents of phenolics, lycopene and ascorbic acid. Mineral and trace elements contents were also significantly affected by cultivars. Values recorded for K, Ca and Mg ranged from 2139.6 to 3056.9 mg kg-1, 137.7 to 325.8 mg kg-1 and 27.3 to 168.7 mg kg-1 respectively.

scholarly journals Comparative analysis on bioactive compounds and antioxidant activity of Algerian fenugreek (Trigonella foenum-graecum L.) and Syrian cumin (Cuminum cyminum L.) seeds

2021 ◽  
Vol 67 (1) ◽  
pp. 18-34
Author(s):  
Hasna Bouhenni ◽  
Koula Doukani ◽  
Daniela Hanganu ◽  
Neli-Kinga Olah ◽  
Nazim Şekeroğlu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Hplc Method ◽  
Aluminium Chloride ◽  
Total Phenolic ◽  
Cuminum Cyminum ◽  
Trigonella Foenum Graecum ◽  
Hydrolysable Tannins ◽  
Trigonella Foenum Graecum L

Summary Introduction: Natural products represent a gold mine for scientists looking for compounds for the treatment of health problems and diseases with their different biological and pharmacological activities. However, recent research is focused on finding natural sources of antioxidants. Objective: The objective of current research was to determine the phytochemical profile of Algerian fenu-greek (Trigonella foenum-graecum L.), and Syrian cumin (Cuminum cyminum L.) seeds in order to characterize their phenolic compounds and to determine their antioxidant activities. Methods: Total phenolic, flavonoids, condensed and hydrolysable tannins contents were quantified using Folin-Ciocalteu, aluminium chloride, vanillin and ferric chloride methods, respectively. Phenolic compounds were identified by HPLC method and antioxidant activity was measured using DPPH assay. Results: The higher amounts of total phenolic compounds, flavonoids, condensed and hydrolysable tannins were given by fenugreek. Results of HPLC analysis of our plants showed that eight phytochemical compounds were found in cumin extract, and seven molecules in fenugreek extract. Moreover, fenugreek possessed higher antioxidant activity. Conclusion: This study confirmed that our plants are a good source of phenolic contents and possess a high antioxidant activity.

Hydrophobicity and antioxidant activity acting together for the beneficial health properties of nordihydroguaiaretic acid

2015 ◽  
Vol 6 (6) ◽  
pp. 1818-1831 ◽  
Author(s):  
Luana Chiquetto Paracatu ◽  
Carolina Maria Quinello Gomes de Faria ◽  
Maria Luiza Zeraik ◽  
Camila Quinello ◽  
Camila Rennó ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Rosmarinic Acid ◽  
Functional Foods ◽  
Nordihydroguaiaretic Acid ◽  
Anti Inflammatory

Nordihydroguaiaretic acid and rosmarinic acid, phenolic compounds found in various plants and functional foods, have known anti-inflammatory properties.

scholarly journals Antioxidant Activity, Sugar Content and Phenolic Profiling of Blueberries Cultivars: A Comprehensive Comparison

2018 ◽  
Vol 46 (2) ◽  
pp. 639-652 ◽  
Author(s):  
Onur Tolga OKAN ◽  
İlhan DENİZ ◽  
Nurettin YAYLI ◽  
İhsan Güngör ŞAT ◽  
Mehmet ÖZ ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Sugar Content ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content ◽  
The World ◽  
Comprehensive Comparison

Commercial blueberry production has been a viable industry throughout the world for 95 years; because of blueberry is a good source of antioxidant. Blueberries are especially rich in anthocyanin, a flavonoid with potent antioxidant capacity. The aim of this study was to compare the phenolic quantities, antioxidant activities, anthocyanin, sugar and phenolic compounds of blueberries produced in Turkey with those of similar blueberry varieties produced around the world. As a result of the conducted analysis, the total phenolic content (TPC) amount found in the berries was 77.26-215.12 mg GAE/100 g, the total flavonoid content (TFC) was 30.44-91.69 mg QE/100 g and the total anthocyanin content (TAC) was 43.03-295.06 mg c3-GE/100 g. Examining the antioxidant activities of the berries, DPPH between 1.10-5.65 mg/ml, FRAP between 454.93-36832.96 µmol troloks/100 g, β-Carotene between 40.66-86.48%. It was determined that the natural berries contained much more phenolic compounds and higher antioxidant activity than that of the cultivars The result of HPLC analysis, chlorogenic acid is determined to be the dominant compound in all berries. Furthermore, fructose and glucose are found in all fruits in different quantities while sucrose is found in certain varieties of berries as well. At the end of the performed study the data indicate that wild and cultivars of blueberries are rich sources of antioxidants for local as well international industries importing this fruit for food processing and enormous products.

scholarly journals Chemical Constituents and Antioxidant Activity of Ficus callosa

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Phan Van Kiem ◽  
Nguyen Xuan Cuong ◽  
Nguyen Xuan Nhiem ◽  
Dan Thi Thuy Hang ◽  
Nguyen Hoai Nam ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Column Chromatography ◽  
Methanol Extract ◽  
Antioxidant Activities ◽  
Chemical Constituents ◽  
Oxygen Radical ◽  
Oxygen Radical Absorbance Capacity ◽  
Chemical Evidence

One new megastigmane glycoside, ficalloside (1), and eleven known compounds, were isolated from methanol extract of Ficus callosa leaves by repeated column chromatography. Their structures were established on the basis of spectral and chemical evidence. The antioxidant activities of these compounds were measured using the oxygen radical absorbance capacity (ORAC) assay. Compound 8 exhibited potent antioxidant activity of 10.6 μM trolox equivalents at the concentration of 2 μM. At this concentration, compounds 4-7 and 9-12 showed significant antioxidant activity with ranging of 2.1~6.1 μM trolox equivalents.

scholarly journals Antioxidant activity of phenolic fraction of pea (Pisum sativum)

2013 ◽  
Vol 19 (No. 4) ◽  
pp. 139-142 ◽  
Author(s):  
R. Amarowicz ◽  
M. Karamać ◽  
S. Weidner
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Total Phenolics ◽  
Antioxidant Activities ◽  
Beta Carotene ◽  
Uv Spectra ◽  
Model System ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Phenolic Fraction

An extract of seeds of pea was prepared using 80% (v/v) acetone. Six fractions (I&ndash;VI) were separated from the crude extract on a Sephadex LH-20 column using methanol as the mobile phase. The antioxidant activity of fractions was investigated in a &beta;-carotene-linoleate model system. For individual fractions, UV spectra were recorded and the content of total phenolics was determined. Results of the &beta;-carotene-linoleate model system indicated that antioxidant activities of separated fractions correlated with their content of total phenolic compounds and they decreased in the order of IV&nbsp;= VI &gt; V &gt; III &gt; I &gt; II. The antioxidant activity of fractions IV and VI was very strong as compared with that of butylated hydroxyanisole (BHA). Absorption maxima from UV spectra showed that flavonoids, and not phenolic acids, were the main phenolic compounds in separated fractions.

The Effect of Heating Temperature on Total Phenolic Content, Antioxidant Activity, and Phenolic Compounds of Plum and Mahaleb Fruits

2019 ◽  
Vol 15 (11-12) ◽  
Author(s):  
Kashif Ghafoor ◽  
Isam A. Mohamed Ahmed ◽  
Süleyman Doğu ◽  
Nurhan Uslu ◽  
Gbemisola J. Fadimu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Gallic Acid ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Heating Temperature ◽  
Dry Weight ◽  
Total Phenolic ◽  
Dihydroxybenzoic Acid ◽  
Different Temperatures

AbstractThe effect of heating at different temperatures (60, 80, 90, 110, and 130 °C) on the total phenolic content, antioxidant activity, and phenolic compounds present in plum and mahaleb fruits was investigated. The antioxidant activity values and total phenolic contents of fresh plum (93.82% measured by DPPH method, 787.79 mg gallic acid equivalent (GAE)/100 g dry weight determined by Folin method) and mahaleb fruits (81.80%, 634.47 mg GAE/100 g dry weight) were higher than plum and mahaleb fruits dried at different temperatures (p < 0.05). Generally, the heating process caused a reduction in both total phenolic content and antioxidant activity for plum and mahaleb. While (+)-catechin (92.62 mg/kg), 1,2-dihydroxybenzene (132.15 mg/kg), gallic acid (107.01 mg/kg), and 3,4-dihydroxybenzoic acid (74.59 mg/kg) are the key phenolic compounds in fresh plum, (+)-catechin, 3,4-dihydroxybenzoic acid, 1,2-dihydroxybenzene, and syringic and caffeic acids were the major phenolic compounds of mahaleb fruits. The polyphenol content of fruits and the class of phenolics present are significantly affected by heating temperature.

scholarly journals Medicinal Plants from Northeastern Brazil against Alzheimer’s Disease

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Alexandre Batista Penido ◽  
Selene Maia De Morais ◽  
Alan Bezerra Ribeiro ◽  
Daniela Ribeiro Alves ◽  
Ana Livya Moreira Rodrigues ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Mangifera Indica ◽  
Psidium Guajava ◽  
Northeastern Brazil ◽  
Acetylcholinesterase Inhibition ◽  
Copaifera Langsdorffii

Alzheimer’s disease (AD) has been linked with oxidative stress, acetylcholine deficiency in the brain, and inflammatory processes. In the northeast region of Brazil, various plants are used to treat several diseases associated with these processes; then an antioxidant test was performed with those plants in a previous work and twelve species with higher antioxidant activity were selected for AChE inhibition evaluation. The phenolic compounds content was determined by Folin–Ciocalteu test and flavonoid content with AlCl3reagent using UV-visible spectrophotometry. The antioxidant activity was assessed analyzing the inhibitory activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis-3-ethylbenzothiazoline-6-sulfonate (ABTS) and by theβ-carotene/linoleic acid system and acetylcholinesterase inhibition using qualitative and quantitative tests. The combination of better acetylcholinesterase inhibitory and antioxidant activities pointed out six species, in descending order, as the best potential sources of therapeutic agents against AD:Hancornia speciosa > Myracrodruon urundeuva > Copaifera langsdorffii > Stryphnodendron coriaceum > Psidium guajava > Mangifera indica. Besides, the phenolic compounds in the species probably contribute to these activities. However, further pharmacological studies to assess the specific applications of these plants against AD are required to confirm these results.

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