scholarly journals Phenolic Compounds, Antioxidant Activities, and Inhibitory Effects on Digestive Enzymes of Different Cultivars of Okra (Abelmoschus esculentus)

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1276
Author(s):  
Ding-Tao Wu ◽  
Xi-Rui Nie ◽  
Dan-Dan Shen ◽  
Hong-Yi Li ◽  
Li Zhao ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Digestive Enzymes ◽  
High Performance ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Inhibitory Effects ◽  
Antioxidant Power ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity

In this study, the phenolic profiles and bioactivities of five representative cultivars of okra collected in China were investigated. Noticeable variations of phenolic compounds and their bioactivities were observed among these different cultivars of okra. The contents of total flavonoids (TFC) in “Shuiguo”, “Kalong 8”, “Kalong 3”, “Wufu”, and “Royal red” ranged from 1.75 to 3.39 mg RE/g DW, of which “Shuiguo” showed the highest TFC. Moreover, five individual phenolic compounds were found in okra by high performance liquid chromatography analysis, including isoquercitrin, protocatechuic acid, quercetin-3-O-gentiobioside, quercetin, and rutin, while isoquercitrin and quercetin-3-O-gentiobioside were detected as the main phenolic compounds in okra. Moreover, all tested okra exhibited significant antioxidant activities (2,2-diphenyl-1-picrylhydrazyl radical scavenging capacity, 2,2’-azino-bis (3-ethylenzthiazoline-6-sulphonic acid) radical scavenging capacity, and ferric reducing antioxidant power) and inhibitory effects on digestive enzymes (lipase, α-glucosidase, and α-amylase). Indeed, “Shuiguo” exhibited much better antioxidant activities and inhibitory activities on digestive enzymes, which might be attributed to its high TFC. Results suggested that okra, especially “Shuiguo”, could be developed as natural antioxidants and inhibitors against hyperlipidemia and hyperglycemia in the fields of functional foods and pharmaceuticals, which could meet the increasing demand for high-quality okra with health-promoting properties in China.

Bioactivity of Microparticles Prepared from Fermented Seaweeds Waste Materials

2013 ◽  
Vol 328 ◽  
pp. 748-752 ◽  
Author(s):  
Bing Zhao Zhang ◽  
Pei Sheng Yan ◽  
Wei Zhang ◽  
Berit Smestad Paulsen
Keyword(s):  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Edible Mushroom ◽  
Waste Materials ◽  
Micro Particles ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity ◽  
Total Antioxidant ◽  
First Time

Seaweeds waste is a main oceanic nonproductive material in related industries. In this study, it was utilized for incubation of Cantharellus sp., a popular edible mushroom. The micro particles obtained from the incubation were investigated for antioxidant activities. The results showed that the Cantharellus can grow on the seaweeds waste and produced dense mycelia. Meanwhile, antioxidant assays showed that the total antioxidant capacity and hydroxyl radical scavenging capacity of the micro particles obtained from Cantharellus incubation were significantly higher than those of the seaweeds waste. This is not only the first time to incubate Cantharellus sp. on seaweeds waste, but also the first study involved in antioxidant activities of fermented culture with Cantharellus sp.. It would be a beneficial pathway to recycle seaweeds waste with incubation of Cantharellus to produce potential natural antioxidants.

scholarly journals Free Radical-Scavenging Capacities, Phenolics and Capsaicinoids in Wild Piquin Chili (Capsicum annuum var. Glabriusculum)

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2655 ◽  
Author(s):  
Yolanda Moreno-Ramírez ◽  
Guillermo Martínez-Ávila ◽  
Víctor González-Hernández ◽  
Cecilia Castro-López ◽  
Jorge Torres-Castillo
Keyword(s):  
Free Radical ◽  
Phenolic Compounds ◽  
Radical Scavenging ◽  
Natural Populations ◽  
Free Radical Scavenging ◽  
Chemical Diversity ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity

The total phenolic compounds content, free radical-scavenging capacity and capsaicinoid content in populations of wild Piquin chili (C. annuum) were studied. Aqueous and hydroalcoholic extracts from nine ecotypes were evaluated. High contents of phenolic compounds and free radical-scavenging capacities were observed for both extracts; however, the values that were found for the hydroalcoholic phase were substantially higher. LC-MS analysis allowed for the detection of 32 compounds, where apigenin-8-C-glucoside followed by vanillic acid 1-O-β-o-glucopyranosylester (Isomer I or II) and 7-ethoxy-4-methylcoumarin were the most widely distributed; they were found in more than 89% of the ecotypes. The diversity of identified phenolic compounds was different among ecotypes, allowing them to be distinguished by chemical diversity, free radical-scavenging capacities and heat Scoville units. The total capsaicinoid content was higher in Population I (23.5 mg/g DW) than in Populations II and III, which had contents of 15.3 and 10.7 mg/g DW, respectively. This variability could lead to phytochemical exploitation and the conservation of the natural populations of wild chili.

scholarly journals Review on in vitro antioxidant activities of Curcuma species commonly used as herbal components in Indonesia

Food Research ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 286-293 ◽  
Author(s):  
Abdul Rohman ◽  
H. Widodo ◽  
E. Lukitaningsih ◽  
M. Rafi ◽  
Nurrulhidayah A.F. ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Curcuma Longa ◽  
Radical Scavenging ◽  
Thiobarbituric Acid ◽  
Natural Antioxidants ◽  
In Vitro Tests ◽  
Antioxidant Power ◽  
Ferric Thiocyanate ◽  
Herbal Components

Free radicals, reactive nitrogen species (RNS) and reactive oxygen species (ROS) have been known to contribute several degenerative diseases such as cardiovascular diseases, aging, certain types of cancers, rheumatoid arthritis, neurodegenerative, and diabetes mellitus. In order to overcome the negative effects of these radicals, some scientists have explored some natural antioxidants from plants and it's by-products. The antioxidant can be defined as any substances or samples capable of inhibiting free radical reactions in the oxidation reaction. Due to curcuminoids contained, Curcuma species such as Curcuma longa, Curcuma heyneana, Curcuma mangga, and Curcuma xanthorriza were commonly used for herbal components in some traditional medicine. Several in vitro tests been introduced and used to measure antioxidant activities, namely radical scavenging assay using 2,2’-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6 -sulfonic acid) (ABTS•+), ferric reducing antioxidant power (FRAP), ferric-thiocyanate, phosphomolybdenum method, cupric ion reducing antioxidant capacity, metal chelating power, beta-carotene bleaching linoleic-ferric-thiocyanate, and thiobarbituric acid methods. This review highlighted the antioxidant activities in vitro of C. longa, C. heyneana, C. mangga, and C. xanthorriza through several tests. To perform this review, several repute databases were analyzed and used. From this review, it can be stated that Curcuma species have powerful antioxidant activities, therefore they could be potential sources of natural antioxidants and can be used as food supplements.

scholarly journals Extraction, Purification and In Vitro Antioxidant Activity Evaluation of Phenolic Compounds in California Olive Pomace

Foods ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 174
Author(s):  
Hefei Zhao ◽  
Roberto J. Avena-Bustillos ◽  
Selina C. Wang
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Natural Antioxidants ◽  
The United States ◽  
Total Phenolic ◽  
Olive Pomace ◽  
Antioxidant Power ◽  
Practical Applications ◽  
Crude Extracts

Olive pomace (OP) is a valuable food byproduct that contains natural phenolic compounds with health benefits related to their antioxidant activities. Few investigations have been conducted on OP from the United States while many studies on European OP have been reported. OP of Arbequina, the most common cultivar from California, was collected and extracted by water, 70% methanol and 70% ethanol, followed by purification using macroporous absorbing resin. Results showed that the extractable total phenolic content (TPC) was 36–43 mg gallic acid equivalents (GAE)/g in pitted, drum-dried defatted olive pomace (DOP), with major contributions from hydroxytyrosol, oleuropein, rutin, verbascoside, 4-hydroxyphenyl acetic acid, hydroxytyrosol-glucoside and tyrosol-glucoside. Macroporous resin purification increased TPC by 4.6 times the ethanol crude extracts of DOP, while removing 37.33% total sugar. The antioxidant activities increased 3.7 times Trolox equivalents (TrE) by DPPH and 4.7 times TrE by ferric reducing antioxidant power (FRAP) in the resin purified extracts compared to the ethanol crude extracts. This study provided a new understanding of the extraction of the bioactive compounds from OP which could lead to practical applications as natural antioxidants, preservatives and antimicrobials in clean-label foods in the US.

scholarly journals Antioxidant activities and A549 lung adenocarcinomic cells against capacity from various extracts of Agrimonia pilosa Ledeb

2018 ◽  
Vol 4 (3) ◽  
pp. 114-119
Author(s):  
Quang Ung Le ◽  
◽  
Horng Liang Lay ◽  
Ming Chang Wu ◽  
◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
High Performance ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
A549 Cells ◽  
Total Phenolic ◽  
Root Extract ◽  
Inhibitory Capacity ◽  
Ethanol Extracts

Agrimonia pilosa Ledeb (AL) has received considerable attention as a herbal medicine for its applications in ethnopharmacology with heath benefits. This study aimed to investigate antioxidant activities and A549 growth inhibitory capacity from its root extract (RE) and aerial parts extract (AE). The 50% ethanol extracts were used for the tests. The total polyphenol content and the antioxidant effects comprising ABTS+ and DPPH free radical scavenging activities were evaluated. Phenolic compounds in the extracts were isolated using high performance liquid chromatography (HPLC). Lactate dehydrogenase released in medium was also evaluated. Total phenolic and flavonoid content, and in vitro antioxidant potential of the RE were higher (p<0.01) than that of the AE. Two individual phenolic compounds consisting of 4-hydroxybenzoic acid and p-coumaric acid were firstly identified in both by HPLC. The RE exhibited higher A549 inhibitory capacity compared to the AE and activated the apoptotic proteins of bcl-2, bax, bad, caspase-3 and caspase-9 in A549. In conclusion, the AL extracts were more effective in antioxidant and A549 cells inhibitory capacity.

scholarly journals Total Phenolic Content and Antioxidant Activity of Salvia spp. Exudates

2012 ◽  
Vol 7 (2) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Laura Giamperi ◽  
Anahi Bucchini ◽  
Angela Bisio ◽  
Emanuela Giacomelli ◽  
Giovanni Romussi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Total Phenolic ◽  
Dpph Radical ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity ◽  
Dpph Radical Scavenging

The total phenolic content and antioxidant activity of 6 Salvia spp. exudates were measured to find new potential sources of natural antioxidants. Total phenolic content was assessed by a modified Prussian blue method, and the antioxidant activity by two methods: 1,1- diphenyl-2-picryl- hydrazyl (DPPH) radical scavenging capacity assay and lipoxygenase inhibitory assay. The total phenolic content ranged between 1.3 μg/mg DW ( S. fallax) and 74.0 μg/mg DW ( S. cacaliaefolia). In the DPPH test, S. cacaliaefolia was more effective than BHT, while in the inhibition of lipid peroxidation all the extracts presented good antioxidant capacity.

scholarly journals Comparative Analysis of Phenolic Compounds in Seven Hypericum Species and Their Antioxidant Properties

2017 ◽  
Vol 12 (11) ◽  
pp. 1934578X1701201 ◽  
Author(s):  
Gordana Zdunic ◽  
Dejan Godjevac ◽  
Katarina Savikin ◽  
Silvana Petrovic
Keyword(s):  
Comparative Analysis ◽  
Phenolic Compounds ◽  
High Performance ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Uv Spectra ◽  
Biologically Active ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Hypericum Species

A comparative analysis of the phenolic compounds in the 70% EtOH extracts of Hypericum acutum, H. androsaemum, H. barbatum, H. hirsutum, H. maculatum, and H. richeri has been carried out using high-performance liquid chromatography coupled with photodiode array UV detection and high resolution TOF mass spectrometry. Quercetin, astilbin, I3, II8-biapigenin, orientin, 2”- O-acetylorientin, three phenolcarboxylic acids, and eight flavonols 3- O-glycosides were identified in the extracts on the basis of their on-line UV spectra, accurate mass spectral data, and in comparison of retention times with those from the standards. Fingerprint analysis of the extracts revealed significant differences in the qualitative and quantitative chemical composition of the studied species. Antioxidant assays with various reaction mechanisms were used including ferric reducing antioxidant power (FRAP) assay, DPPH, ABTS, superoxide anion radical scavenging capacity and inhibition of liposome peroxidation induced by Fe2+. The most potent were extracts of H. acutum and H. maculatum indicating this Hypericum species interesting for further research aimed as a potentially new source of biologically active compounds.

scholarly journals Comparative analysis of the polyphenols profiles and the antioxidant and cytotoxicity properties of various blue honeysuckle varieties

2018 ◽  
Vol 16 (1) ◽  
pp. 637-646 ◽  
Author(s):  
Yuehua Wang ◽  
Xu Xie ◽  
Xulong Ran ◽  
Shurui Chou ◽  
Xinyao Jiao ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Bioactive Components ◽  
Fruit Peel ◽  
Scavenging Capacity ◽  
Polyphenol Profile ◽  
Blue Honeysuckle

AbstractThe polyphenol profile, antioxidant activity (particularly peroxyl radical-scavenging capacity (PSC) and cellular antioxidant activity (CAA)) and cytotoxicity of extracts from seven varieties of blue honeysuckle were compared in this study. Moreover, an analysis of correlations between individual polyphenol profiles and antioxidant activities was also conducted. Seventeen components were found in the investigated blue honeysuckle extracts, with anthocyanins being the prominent bioactive components among polyphenols. Fruit peel contained higher concentrations of individual anthocyanins compared to the fruit pulp. Beilei blue honeysuckle had the highest antioxidant activity. Correlation analysis showed that antioxidant activity values were highly associated with cyanidin-3-glucoside levels. Blue honeysuckle extracts were not cytotoxic over the range of doses tested. Among the varieties analyzed, Beilei possessed the highest antioxidant properties and was found to be the most appropriate source of natural antioxidants.

scholarly journals A Characterization of Content, Composition and Scavenging Capacity of Phenolic Compounds in Parsnip Roots of Various Weight

2014 ◽  
Vol 9 (6) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Nada Č. Nikolić ◽  
Miodrag M. Lazić ◽  
Ivana T. Karabegović ◽  
Gordana S. Stojanović ◽  
Zoran B. Todorović
Keyword(s):  
Phenolic Compounds ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Root Weight ◽  
Dry Extract ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity ◽  
Dpph Scavenging ◽  
Root Size

The contents, composition and radical scavenging capacity of phenolic compounds from parsnips of various root weights grown in Serbia were examined. The content of phenolic compounds depended on root size, and the highest content was in the group where the samples with the lowest root size were grouped. The content of phenolic compounds varied from 109.7 to 125.3 μmol of chlorogenic acid per g dry extract, i.e.5470.8 to 6245.1 mg per kg fresh weight. Among the identified compounds were quercetin, kaempferol, apigenin and genkwanin glucosides and hydroxycinnamic and caffeoylshikimic acids. The highest antioxidant capacity was found for the group with the lowest root weight; the IC50 values ranged from 1.59 to 2.49 mg mL–1. There was positive correlation between the total phenolic content and scavenging capacity, and the kaempferol glucosides content could be an indicator of DPPH scavenging capacity of parsnip roots.

scholarly journals THE CHARACTERISTICS AND ANTIOXIDANT ACTIVITIES OF CHABA MAPLE (HIBISCUS ACETOSELLA) HOMEMADE JAM

2019 ◽  
pp. 52-55
Author(s):  
SURADWADEE THUNGMUNGMEE ◽  
NAKUNTWALAI WISIDSRI ◽  
WARACHATE KHOBJAI ◽  
THISAKORN DUMRONGPHUTTIDECHA ◽  
KHEMJIRA JAMKOM ◽  
...  
Keyword(s):  
High Performance ◽  
Antioxidant Activities ◽  
Sugar Content ◽  
Radical Scavenging ◽  
Chemical Properties ◽  
Chemical Characteristics ◽  
Dpph Radical ◽  
Antioxidant Power ◽  
Radical Scavenging Ability ◽  
Dpph Radical Scavenging

Objective: This study aimed to characterize physicochemical and chemical characteristics of Chaba maple (Hibiscus acetosella) homemade jam (CHJ)and determine its autoxidation ability.Methods: The physicochemical and chemical characteristics of CHJ were investigated. The color, viscosity, and pH were observed as physicochemicaldata while chemical properties were obtained from sugar content and total polyphenol content (TPC), determined using high-performance liquidchromatography refractometer and Folin–Ciocalteu assay, respectively. The antioxidant activities of CHJ were identified using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, ferric reducing antioxidant power (FRAP), and nitric oxide (NO) radical scavenging ability methods.Results: The color and viscosity of CHJ were purple-red and 34,483.33±152.75 cP, respectively. The pH was at 3.78. The total sugar was not detectedin CHJ. The TPC of CHJ showed the highest (47.18±1.80 mg gallic acid equivalent [GAE]/g of jam) followed by Streamline (SL) (23.66±0.32 mgGAE/g of jam), Doikham (DK) (21.99±0.50 mg GAE/g of jam), and Best food (BF) (9.75±0.38 mg GAE/g of jam), respectively. Antioxidant activitiesof CHJ with %1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging of 100.00±1.39% and FRAP value of 1690.70±8.26 uM. Both of activitiesexhibited the highest activity and significantly different when compared with other jams. The %NO scavenging activity of CHJ and SL was 72.43±1.93%and 73.82±1.66%, respectively, which higher than DK and BF.Conclusion: This study shows good in both physicochemical and chemical characteristics of CHJ. The CHJ presents the highest TPC as well asantioxidant activities. Thus, a homemade jam of Chaba maple may be considered as a good source of antioxidants and functional foods.

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