scholarly journals Antioxidants Distribution in Pulp and Seeds of Black and Red Goji Berries as Affected by Boiling Processing

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Guang Xin ◽  
Fengmei Zhu ◽  
Bin Du ◽  
Baojun Xu
Keyword(s):  
Antioxidant Activities ◽  
Condensed Tannin ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Antioxidant Power ◽  
Phytochemical Content ◽  
Scavenging Capacity ◽  
Ferric Reducing Antioxidant Power ◽  
Goji Berries ◽  
Dpph Scavenging

Pulp and seeds from four varieties of black goji and two varieties of red goji with different geographical origins were examined for their total phenolic content (TPC), total flavonoid content (TFC), condensed tannin content (CTT), monomeric anthocyanin content (MAC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging capacity, and ferric reducing antioxidant power (FRAP) using colorimetric methods. Contribution rates of pulp and seed to phytochemical contents and overall antioxidant capacities of whole fruits were calculated for each parameter. It was observed that most of the phytochemicals and antioxidant activities were predominantly contributed by the pulp in all six varieties. Boiling led to significant (p< 0.05) losses in the phytochemical content and antioxidant capacity. The average MAC value in black goji was significantly (p< 0.05) higher than that observed for red goji.

scholarly journals Chemical composition and antioxidant activity of three species of Cornukaempferia in Thailand

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
THEERAPHAN CHUMROENPHAT ◽  
Surapon Saensouk ◽  
PIYAPORN SAENSOUK
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Antioxidant Activities ◽  
Dry Weight ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Plant Parts ◽  
Ferric Reducing Antioxidant Power ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Abstract. Chumroenphat T, Saensouk S, Saensouk P. 2021. Chemical composition and antioxidant activity of three species of Cornukaempferia in Thailand. Biodiversitas 22: 4036-4044. Genus Cornukaempferia (Zingiberaceae) were used as medicinal plants in Thailand. Cornukaempferia has never been reported the chemical compounds and antioxidant activity before. This study was designed to identify the chemical composition and antioxidant activities in root, rhizome, stem, and leaves of Cornukaempferia aurantiflora, C. larsenii, and C. longipetiolata. DPPH scavenging activity and Ferric reducing antioxidant power (FRAP) assays assessed the chemical composition and antioxidant activity. The results showed that total phenolic content (TPC) and total flavonoid content (TFC) found different plant parts obtained in this study were in the order of root>rhizomes>leaves>?stems. The C. aurantiflora had a high TPC of 416.39 mg GAE/g dry weight, while individual phenolics, such as vanillic acid at 256.90 mg/g dry weight, showed high contents in the leaf part. For C. larsenii,  TFC and individual flavonoids, such as catechin, have high 62.52 and 56.47 mg/100g dry weight values in the roots, respectively. The antioxidant activities in different species of different plant parts (DPPH: root>leaves?> rhizomes?>?stems; FRAP: leaves?>root>?rhizomes?>?stems). The genus Cornukaempferia is a rich source of bioactive compounds and antioxidant activity. Therefore, the genus Cornukaempferia will be used as medicine and food to produce products with health benefits in the future.

scholarly journals Phenolic Profiles and Antioxidant Activities of 30 Tea Infusions from Green, Black, Oolong, White, Yellow and Dark Teas

Antioxidants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 215 ◽  
Author(s):  
Cai-Ning Zhao ◽  
Guo-Yi Tang ◽  
Shi-Yu Cao ◽  
Xiao-Yu Xu ◽  
Ren-You Gan ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Dry Weight ◽  
Trolox Equivalent Antioxidant Capacity ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Phenolic Contents ◽  
Tea Infusions ◽  
Phenolic Profiles ◽  
Trolox Equivalent ◽  
Ferric Reducing Antioxidant Power

Tea is among the most consumed drink worldwide, and its strong antioxidant activity is considered as the main contributor to several health benefits, such as cardiovascular protection and anticancer effect. In this study, the antioxidant activities of 30 tea infusions, which were obtained by the mimic of drinking tea of the public, from green, black, oolong, white, yellow and dark teas, were evaluated using ferric-reducing antioxidant power (FRAP) and Trolox equivalent antioxidant capacity (TEAC) assays, ranging from 504.80 ± 17.44 to 4647.47 ± 57.87 µmol Fe2+/g dry weight (DW) and 166.29 ± 24.48 to 2532.41 ± 50.18 µmol Trolox/g DW, respectively. Moreover, their total phenolic contents (TPC) were detected by Folin-Ciocalteu assay and were in the range of 24.77 ± 2.02 to 252.65 ± 4.74 mg gallic acid equivalent (GAE)/g DW. Generally, Dianqing Tea, Lushan Yunwu Tea, and Xihu Longjing Tea showed the strongest antioxidant activities among 30 teas. Furthermore, the phenolic compounds in tea infusions were identified and quantified, with catechins most commonly detected, especially in green tea infusions, which were main contributors to their antioxidant activities. Besides tea polyphenols, considerable content of caffeine also presented in 30 tea infusions.

scholarly journals ANTIOXIDANT PROFILE AND PHYTOCHEMICAL CONTENT OF DIFFERENT PARTS OF SUPER RED DRAGON FRUIT (HYLOCEREUS COSTARICENSIS) COLLECTED FROM WEST JAVA-INDONESIA

2017 ◽  
Vol 10 (12) ◽  
pp. 290 ◽  
Author(s):  
Irda Fidrianny ◽  
Nadia Ilham ◽  
Rika Hartati
Keyword(s):  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Phytochemical Content ◽  
Dragon Fruit ◽  
Dpph Method ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Different Parts

Objectives: The goals of this research were to observe antioxidant properties from different parts of super red dragon fruit (Hylocereus costaricensis) using two antioxidant testing methods which were 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS).Methods: Antioxidant activities were determined using DPPH and ABTS assays, total phenolic content (TPC) using Folin–Ciocalteu reagent, flavonoid content by Chang’s method.Results: Inhibitory concentration 50% (IC50) of DPPH scavenging activity of all of the extracts in the range of 2.69 μg/ml was −94.17 μg/ml. The ethyl acetate peel extract of super red dragon fruit expressed the highest TPC (4.56 g GAE/100 g) and the highest total flavonoid content (12.63 g QE/100 g). TPC in flesh extract of super red dragon fruit had a negative and significant correlation with their IC50 of ABTS. The IC50 of DPPH and IC50 of ABTS of flesh extract of super red dragon fruit showed positive and significant correlation.Conclusion: All different parts extracts of super red dragon fruit (except n-hexane flesh extract) were categorized as a very strong antioxidant by DPPH method. Phenolic compounds in flesh extract of super red dragon fruit were the major contributor in antioxidant activities by ABTS method. DPPH and ABTS showed linear results in antioxidant activities of super red dragon fruit flesh extract.

scholarly journals UPLC-QTOF-MS/MS and GC-MS Characterization of Phytochemicals in Vegetable Juice Fermented Using Lactic Acid Bacteria from Kimchi and Their Antioxidant Potential

Antioxidants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1761
Author(s):  
Moeun Lee ◽  
Jung Hee Song ◽  
Eun Ji Choi ◽  
Ye-Rang Yun ◽  
Ki Won Lee ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Phenyllactic Acid ◽  
Antioxidant Power ◽  
Vegetable Juice ◽  
Daucus Carota L ◽  
Ferric Reducing Antioxidant Power

This study aims to investigate fermentative metabolites in probiotic vegetable juice from four crop varieties (Brassica oleracea var. capitata, B. oleracea var. italica, Daucus carota L., and Beta vulgaris) and their antioxidant properties. Vegetable juice was inoculated with two lactic acid bacteria (LAB) (Companilactobacillus allii WiKim39 and Lactococcus lactis WiKim0124) isolated from kimchi and their properties were evaluated using untargeted UPLC-QTOF-MS/MS and GC-MS. The samples were also evaluated for radical (DPPH• and OH•) scavenging activities, lipid peroxidation, and ferric-reducing antioxidant power. The fermented vegetable juices exhibited high antioxidant activities and increased amounts of total phenolic compounds. Fifteen compounds and thirty-two volatiles were identified using UPLC-QTOF-MS/MS and GC-MS, respectively. LAB fermentation significantly increased the contents of d-leucic acid, indole-3-lactic acid, 3-phenyllactic acid, pyroglutamic acid, γ-aminobutyric acid, and gluconic acid. These six metabolites showed a positive correlation with antioxidant properties. Thus, vegetable juices fermented with WiKim39 and WiKim0124 can be considered as novel bioactive health-promoting sources.

scholarly journals Antioxidant activity and polyphenol composition of Pistacia terebinthus fruit from Tessala (Western Algeria)

2021 ◽  
Vol 5 (11) ◽  
pp. 30-34
Author(s):  
Nazim Bellifa ◽  
Abdelhak Ismail Benhaddou ◽  
Houssem Eddine Ferkous ◽  
Mohammed Adil Selka ◽  
Houari Toumi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Scavenging Effect ◽  
Coffee Substitute ◽  
Ferric Reducing Antioxidant Power ◽  
Pistacia Terebinthus

Background: Consumption of traditional herbal beverages has been generally increased in the last decades, Terebinth coffee, known as ‘‘menengic coffee’’ in Turkish, is one of the most consumed herbal coffees in Turkey, turpentine tree is one of the components of the Mediterranean bush, particularly in Algeria, known as Betoum el Kiffan is largely used as food and in traditional medicine. Aims: In this study, Total phenol, flavonoid content, and antioxidant activity of three extracts of Pistacia trebinthus fruit growing in Algeria was measured using radical scavenging activity tests and metal-related tests including, ferric-reducing antioxidant power (FRAP). The chemical composition profile of the fruits and the coffee brands was identified by thin-layer chromatography, the effects of roasting method of this fruit was rivaled also. Materials and Methods: The total phenolic content of the extracts was determined using the Folin-Ciocalteu method. All extracts of the terebinth fruits and coffee brands displayed a high DPPH scavenging effect. Results: The results of the ferric-reducing antioxidant power show that the reduction capacity is proportional to the increase in the concentration of the samples. All the extracts of the plant exhibit antioxidant activities lower than those of the reference product besides the infusion extract of the P. terebinthus roasted coffee, which is the most active with an optical density of 1.68 nm at a concentration of 400 μg/mL. The chromatography results show that the various extracts of Pistacia terebinthus fruit carry a large number of polyphenols, in particular the carboxylic acids phenols. Conclusions: The plant can be considered as a coffee substitute and opens up promising avenues for the food and pharmaceutical industry in Algeria. Keywords: Antioxidant, Pistacia terebinthus, Coffee, FRAP, polyphenol.

scholarly journals Total Polyphenol and Flavonoid Content and Antioxidant Capacity of Some Varieties of Persea americana Peels Consumed in Cameroon

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Ruth Edwige Kemadjou Dibacto ◽  
Boris Ronald Tonou Tchuente ◽  
Maxwell Wandji Nguedjo ◽  
Yves Martial Tongue Tientcheu ◽  
Emilienne Carine Nyobe ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Aqueous Extract ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Persea Americana ◽  
Total Phenolic ◽  
Total Polyphenol ◽  
Antioxidant Power ◽  
Ferric Reducing Antioxidant Power ◽  
Dpph Scavenging

Fruit peels are increasingly being used as functional foods nowadays. Peelings of twelve varieties of Persea americana fruits consumed in Cameroon were investigated for their phenolic compounds (polyphenols and flavonoids) using three solvents systems, water, ethanol: water (50 : 50 v / v ), and ethanol, and antioxidant activity using total antioxidant capacity (TAC), ferric reducing antioxidant power (FRAP), and 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging methods. Total polyphenol, flavonoids, and antioxidant potential of the peels significantly varied with P. americana variety and also with the extraction solvents in the order ethanol > ethanol: water > water. Total phenolic content varied from 2407 (Fuerte florid) to 673 (Semil) mg GAE/g DM, respectively, while flavonoids varied from 986 to 119 mg QE/g DM for Fuerte florid and Hickson varieties, respectively. TAC, respectively, varied between 132.87 and 126.85 mg AAE/g DM with Hass and Semil varieties, respectively. The highest DPPH scavenging capacity was recorded for the ethanolic extract with Lula (86.33%) and the least for the aqueous extract with the Semil (30.11%) variety. With FRAP, the highest capacity was obtained with hydroethanolic extract of Fuerte florid (0.43 mg AAE/g DM) and the least for aqueous extract with the Semil (0.269 mg AAE/g DM) variety. In conclusion, varieties of avocado peels are a good source of antioxidants. Solvent extraction significantly affected the concentration of bioactive compounds but not the potency of the antioxidants. A weakly positive correlation but not significant between the quantity of polyphenol, flavonoid, and antioxidant capacity of avocado peelings was obtained in this study.

scholarly journals Effects of Enzyme Treatment on the Microfiltration of Elderberry

2016 ◽  
Vol 10 (1) ◽  
pp. 40-46
Author(s):  
Diána Furulyás ◽  
Fanni Savanya ◽  
Szilvia Bánvölgyi ◽  
Nóra Papp ◽  
Éva Stefanivots-Bányai ◽  
...  
Keyword(s):  
Ceramic Membrane ◽  
Enzyme Treatment ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Antioxidant Power ◽  
Preliminary Examination ◽  
Pectolytic Enzymes ◽  
In Series ◽  
Ferric Reducing Antioxidant Power

The aim of this study was to evaluate the effect of microfiltration (MF) on the antioxidant capacity of elderberry juice using ceramic membrane. Previous to MF measurements preliminary examination was achieved with different enzymes. Four different samples were prepared: one without any enzyme and three with different pectolytic enzymes. The resistances were determined using the resistance-in-series model and difference between four enzyme-treated samples are evaluated. The effect of this technology on the antioxidant component of the clarified elderberry juice has been evaluated in permeate and retentate samples. For ferric reducing antioxidant power was measured with FRAP and total phenolic content (TPC) was determined with Folin Ciocalteau reagent. The total anthocyanin content (TAC) was estimated using spectrophotometric method. Higher juice yield was obtained using enzyme compared with enzyme-free elderberry pulp. The analytical results show that the MF membrane retained the valuable components in different rate. Significant losses are believed to have occurred after the MF clarification process due to fouling layer resistance, what can be decreased with pectolytic enzymes treatment.

scholarly journals Impact of Germination Time on Resveratrol, Phenolic Acids, and Antioxidant Capacities of Different Varieties of Peanut (Arachis hypogaea Linn.) from China

Antioxidants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1714
Author(s):  
Ziying Zhou ◽  
Zhili Fan ◽  
Maninder Meenu ◽  
Baojun Xu
Keyword(s):  
Vitamin C ◽  
Phenolic Acids ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Phenolic Profile ◽  
Antioxidant Power ◽  
Germination Time ◽  
Antioxidant Capacities ◽  
Ferric Reducing Antioxidant Power ◽  
Highly Correlated

In China, peanut sprouts are popular among consumers as functional vegetables. This study reports the change in total phenolic content (TPC), total flavonoid content (TFC), monomeric anthocyanin content (MAC), vitamin C, trans-resveratrol content, antioxidant capacities, and phenolic profile of three different varieties of peanut during 8 days of germination. The TPC, TFC, and antioxidant capacity of peanut samples were reduced and then increased with an increase in germination time. TFC values were highly correlated with 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) values. MAC values of peanuts were first increased and then decreased during 8 days of germination. The TFC, DPPH, and FRAP values of germinated peanuts were lower compared to the non-germinated peanut. Germination of peanut samples enhanced the total phenolic acids and trans-resveratrol content, but the vitamin C content of peanut sprouts was lower than ungerminated peanuts.

scholarly journals Antibacterial and Antioxidant Capacity of Polar Microorganisms Isolated from Arctic Lichen Ochrolechia sp.

2014 ◽  
Vol 63 (3) ◽  
pp. 317-322 ◽  
Author(s):  
MI-KYEONG KIM ◽  
HYUN PARK ◽  
TAE-JIN OH
Keyword(s):  
Antioxidant Activities ◽  
Biological Activities ◽  
Sequence Similarity ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Total Phenolic ◽  
Diffusion Test ◽  
Antioxidant Power ◽  
Disk Diffusion Test ◽  
Ferric Reducing Antioxidant Power

Although many scientists have been studying lichens, the bacterial communities among lichens have not been fully explored. In this study, the biological activities of bacterial isolates from Arctic lichen Ochrolechia sp. were screened. Cell cultures were extracted using ethyl acetate, and these cultures were tested for antibacterial and antioxidant activities. To evaluate the antibacterial activities, we carried out a disk diffusion test and minimum inhibitory concentration assay. The inhibition zone diameter (mm) was 8 to 12, and its MIC value ranged from 222.0 to > 1000 μg/ml (control antibiotic ampicillin ranged from 0.31 to 0.58 μg/ml). PAMC26625 (Sphingomonas sp., sequence similarity: 99.108%) showed a high amount of total phenolic and total flavonoid contents within 5 extracts and also exhibited 77.23% and 80.02% in the 1,1-diphenyl-2-picryl-hydrazyl assay and the 2,2'-azino-bis(3-ethyl benzothiazoline-6-sulphonic acid) assay, respectively. In the ferric reducing antioxidant power assay, it was determined that PAMC26625 contained a higher amount of ferrous ion [8.72 mM Fe(II)/mg extract] than control ascorbic acid [6.21 mM Fe(II)/mg extract]. Our data indicated that they had potential to be novel sources of antibacterials and antioxidants.

scholarly journals Antioxidant Activity and Total Phenolic Content of 24 Lamiaceae Species Growing in Iran

2010 ◽  
Vol 5 (2) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Omidreza Firuzi ◽  
Katayoun Javidnia ◽  
Maryam Gholami ◽  
Mohammad Soltani ◽  
Ramin Miri
Keyword(s):  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Dry Weight ◽  
Natural Antioxidants ◽  
Total Phenolic ◽  
Dpph Assay ◽  
Antioxidant Power ◽  
Phenolic Contents ◽  
Methanolic Extracts ◽  
Ferric Reducing Antioxidant Power

The antioxidant activities of the methanolic extracts of 9 Salvia species and 15 other Lamiaceae plants growing in Iran were evaluated using ferric reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assays. FRAP values ranged form 8.5 to 79.0 μM quercetin equivalents/g dry weight, and IC50 values in the DPPH assay from 115.7 to 1350.2 μg dry weight/mL. Salvia species showed the highest antioxidant activities. S. santolinifolia, S. eremophila and S. palestina, which have not been studied before, were the most active plants. These were more active than the previously studied species from this family, such as S. multicaulis and Marrubium vulgare. S. hydrangea and Gontscharovia popovii also showed high antioxidant activities. FRAP and DPPH assay results showed good correlations with the total phenolic contents of the plants, measured by the Folin-Ciocalteau assay (r2 = 0.925 and 0.799, respectively, p < 0.0001). In conclusion, our study shows that some Lamiaceae plants growing in Iran represent good potential sources of natural antioxidants useful for either prevention or treatment of oxidative stress-related diseases.

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