Evaluation of Growth and Antioxidant Activity in Suaeda monoica and Suaeda nudiflora Callus Cultures under Sequential Exposure to Saline Conditions

2019 ◽  
Vol 8 (1) ◽  
pp. 42-52
Author(s):  
Abhishek Joshi ◽  
Bhanupriya Kanthaliya ◽  
Jaya Arora

Background: Plant in vitro culture systems serve as a useful tool to study the regulatory routes which are related to plant growth and survival under altered environmental conditions. Methods: Callus culture of Suaeda monoica and Suaeda nudiflora were established for studying the salt tolerance mechanism at the cellular level. Calli of both the species were induced from seedling’s epicotyls on Murashige and Skoog (MS) medium supplemented with a different combination of auxin and cytokinins. A sequential stress treatment was given to the callus of both the species. The growth rate of callus, osmolytes and antioxidant activities was investigated after 28 days. A control callus was maintained in each experiment without any salt in the growth medium. Results: Efficient callus regeneration was obtained by exposing the callus tissue to MS medium supplemented with 2,4-dichlorophenoxyacetic acid (2,4-D, 1.0 mg/l), benzylaminopurine (BAP, 0.5 mg/l) and 2,4-D (0.5 mg/l), kinetin (Kn, 0.25 mg/l) for S. monoica and S. nudiflora, respectively. A substantial increase was observed in proline content and a strong positive correlation was found between the total phenolic content and antioxidant activity under increasing salt concentrations. Conclusion: This is the first report on S. monoica callus regeneration. The specific cell lines which were generated through callus culture under sequential saline conditions provide a promising foundation for studying salinity induced expression of enzymes. Further comparison of transcriptomic profiles of control and salt-treated callus cultures can serve as a promising system for the detection of genes responsible for the change in expression under salt stress.

2019 ◽  
Vol 2 (1) ◽  
pp. 30 ◽  
Author(s):  
Gergana Sherova ◽  
Atanas Pavlov ◽  
Vasil Georgiev

In vitro plants of Capsicum chinense cv. Carolina Reaper have been obtained by planting seeds on sterile MS medium. The plants were used to initiate callus culture on half strength MS medium, supplied with 2 mg/l 1-Naphthaleneacetic acid and 0.5 mg/L 6-Benzylaminopurine. The polyphenol profiles (phenolic acids and flavonoids) of methanol extracts from obtained callus and in vitro plants have been analyzed by HPLC. The main constituents in plant extract were protocatechuic acid, sinapic acid, rutin, hesperetin and myricetin, whereas in callus extract the major compounds were found to be chlorogenic acid, ferulic acid, rutin, hyperoside, myricetin and hesperetin. The antioxidant capacity of both extracts have been evaluated by using DPPH, TEAC, FRAP and CUPRAC assays. In our knowledge, this is the first report for obtaining of callus culture from Capsicum chinense cv. Carolina Reaper and evaluation of phytochemical profiles and antioxidant activities of its extract. Practical applications: The research outlines the potential of Capsicum in vitro systems as a renewable source of active ingredients for application in cosmetic and food products.


Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3229
Author(s):  
Mat Yunus Najhah ◽  
Hawa Z. E. Jaafar ◽  
Jaafar Juju Nakasha ◽  
Mansor Hakiman

This study aims to investigate whether the in vitro-cultured L. pumila var. alata has higher antioxidant activity than its wild plant. An 8-week-old L. pumila var. alata nodal segment and leaf explants were cultured onto Murashige and Skoog (MS) medium supplemented with various cytokinins (zeatin, kinetin, and 6-benzylaminopurine (BAP)) for shoot multiplication and auxins (2,4-dichlorophenoxyacetic acid (2,4-D) and picloram) for callus induction, respectively. The results showed that 2 mg/L zeatin produced the optimal results for shoot and leaf development, and 0.5 mg/L 2,4-D produced the highest callus induction results (60%). After this, 0.5 mg/L 2,4-D was combined with 0.25 mg/L cytokinins and supplemented to the MS medium. The optimal results for callus induction (100%) with yellowish to greenish and compact texture were obtained using 0.5 mg/L 2,4-D combined with 0.25 mg/L zeatin. Leaves obtained from in vitro plantlets and wild plants as well as callus were extracted and analyzed for their antioxidant activities (DPPH and FRAP methods) and polyphenolic properties (total flavonoid and total phenolic content). When compared with leaf extracts of in vitro plantlets and wild plants of L. pumila var. alata, the callus extract displayed significantly higher antioxidant activities and total phenolic and flavonoid content. Hence, callus culture potentially can be adapted for antioxidant and polyphenolic production to satisfy pharmaceutical and nutraceutical needs while conserving wild L. pumila var. alata.


2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Asmaa A.A. Abdel- Kareem ◽  
H.A. El- Shamy ◽  
A.K. Dawh ◽  
S.G. Gwiefel

The present work was conducted in order to investigate the effect of auxin type (2,4-D and NAA) and concentration (0.00, 0.25, 0.50, 1.00 and 2.00 mg/l) on Balanites aegyptiaca callus cultures growth and production of secondary metabolites. Obtained results demonstrated that supplementation MS medium with 2,4-D at 2.0 mg/l could enhanced and recorded the ultimate values of callus fresh weight, antioxidant activity (%), total flavonoids, total phenolic compounds and total saponins contents and yields of Balanites aegyptiaca L. callus.


2018 ◽  
Vol 47 (2) ◽  
pp. 384-389
Author(s):  
Sebnem Selen ISBILIR ◽  
Sevilay Inal KABALA ◽  
Hulya YAGAR

The objective of the current study was to evaluate the antioxidant activity and enzyme inhibitory effect of different parts of medlar including fruit, leaf and flower bud by using various in vitro methods, and also determination of total phenolic and flavonoid content in the samples. Ethanol extracts of medlar parts were prepared and their antioxidant activities were determined using 1,1-diphenyl-2-picryl-hydrazil (DPPH•) scavenging and β-carotene bleaching methods. The leaf extract showed the strongest antioxidant activity. DPPHradical scavenging activity was in the order of BHA > leaf > bud > fruit. This ordering was the same for β-carotene bleaching activity, tocopherol > leaf > bud > fruit. The highest total phenolic (60.3 ± 1.69 mg GAE g-1 extract) and flavonoid (14.77 ± 1.15 mg QE g-1 extract) content were determined in leaf extract. For possible antidiabetic effects of extracts, α-amylase and α-glucosidase inhibitory activities were investigated, the bud extract showed the highest inhibition activities among the all extracts.


Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4859 ◽  
Author(s):  
Saher Nazir ◽  
Hasnain Jan ◽  
Duangjai Tungmunnithum ◽  
Samantha Drouet ◽  
Muhammad Zia ◽  
...  

Thai basil is a renowned medicinal plant and a rich source of bioactive antioxidant compounds with several health benefits, with actions to prevent of cancer, diabetes and cardiovascular disease. Plant cell and tissue culture technologies can be routinely established as an important, sustainable and low-cost biomass source to produce high-value phytochemicals. The current study aimed at developing an effective protocol to produce Thai basil leaf-derived callus cultures with sustainable and high production of biomass and antioxidants as an alternative of leaves production. MS basal medium with various concentrations of plant growth regulators (PGRs) compatible with nutraceutical applications (i.e., gibberellic acid (GA3) and 6-benzylaminopurine (BAP) either alone or in combination with naphthalene acetic acid (NAA)) were evaluated. Among all tested PGRs, the combination BAP:NAA (5 mg/L:1 mg/L) yields the maximum biomass accumulation (fresh weight (FW): 190 g/L and dry weight (DW): 13.05 g/L) as well as enhanced phenolic (346.08 mg/L) production. HPLC quantification analysis indicated high productions of chicoric acid (35.77 mg/g DW) and rosmarinic acid (7.35 mg/g DW) under optimized callus culture conditions. Antioxidant potential was assessed using both in vitro cell free and in vivo cellular antioxidant assays. Maximum in vitro antioxidant activity DPPH (93.2% of radical scavenging activity) and ABTS (1322 µM Trolox equivalent antioxidant capacity) was also observed for the extracts from callus cultures grown in optimal conditions. In vivo cellular antioxidant activity assay confirmed the effective protection against oxidative stress of the corresponding extract by the maximum inhibition of ROS and RNS production. Compared to commercial leaves, callus extracts showed higher production of chicoric acid and rosmarinic acid associated with higher antioxidant capacity. In addition, this biological system also has a large capacity for continuous biomass production, thus demonstrating its high potential for possible nutraceutical applications.


2019 ◽  
Vol 12 (2) ◽  
pp. 833-841
Author(s):  
Samsu U. Nurdin ◽  
Devi Sabarina ◽  
Subeki Subeki ◽  
Sussi Astuti

The study aimed to evaluate the effects of bay (B), pandan (P), citrus leaves (C) and their combinations against starch hydrolysis enzymes (α-glucosidase and α-amylase enzymes) and antioxidant activity and to examine the role of polyphenol compounds in enzyme inhibition and antioxidant activity. Three single leaves extracts and five of their combinations were applied to inhibit α-glucosidase hydrolyzing p-nitrophenyl-α-D-glucopyranosyde or α-amylase hydrolyzing starch solution as well as to scavenge free radicals. The leaf extracts and their combination showed inhibition activities against α-glucosidase and α-amylase enzymes with range of inhibition activities were between 17.63% to 26.04% and 20.14% to 35.30% respectively. There is no significantly differ among the extracts in modulation of α-glucosidase activity, but each extract exhibited different effect on α-amylase or antioxidant activities. Mixing P with B and C increases the inhibitory activity of the extract against α-amylase as seen that percent of inhibition of BPC is significantly higher than P, eventhough their total phenolic content was not different. The synergism or antagonism effect was not observed when the extracts were combined as the enzyme inhibition or antioxidant activities are not depend on the proportion of the extract in the mixtures. The role of polyphenol compounds on inhibition of the starch digestion enzymes and on antioxidant activity was not observed. Further study is required to fully elucidate the effect of the leaf or their combinations on diabetic animal models or diabetic patients.


Author(s):  
Manal Mortady Hamed ◽  
Aboelfetoh Mohamed Abdalla ◽  
Mosad Ahmed Ghareeb ◽  
Said Abdelhalim Saleh

Objective: The objective of this study was undertaken to estimate the total phenolic contents (TPCs), in vitro antioxidant of different solvent extracts of M. oleifera leaves, oral acute toxicity and LD50 determination of the 85% methanolic extract as well as the chromatographic isolation and identification of the extract constituents.Methods: The antioxidant activity of different solvent extracts of Moringa oleifera leaves were estimated using three antioxidant assays and the total phenolic contents (TPCs) were also evaluated using Folin-Ciocalteu’s assay. The n-BuOH extract undergoes further chromatographic isolation owing to the high antioxidant activity using 2, 2'-diphenyl-1-picrylhydrazyl radical (DPPH) method, which resulted in the isolation of seven compounds.Results: The results showed that the TPCs values of the tested extracts were varied from 309.52 to 43.28 mg gallic acid equivalent/g dry extract. The reducing power antioxidant activities (RPAA) were 0.434, 0.402, 0.395, 0.149, 0.143 and 0.124, while the total antioxidant capacity (TAC) values were 316.43, 203.35, 181.56, 86.70, 76.62 and 50.83 mg ascorbic acid equivalent/g dry extract; for n-BuOH, EtOAc, 85% MeOH, H2O, CH2Cl2, and pet. ether extracts, respectively. The oral acute toxicity study of the 85% methanol extracts of M. oleifera and M. peregrina revealed that; their LD50 values were 3458.3 and 4125 mg/kg respectively, thus the two plants could be classified as slightly toxic in the scale of Hodge and Sterner which reflected their nutrient values as edible plants. The isolated compounds were identified on the basis of their 1H and 13C-NMR spectra as; cis-p-coumaric acid 4-O-(2'-O-β-D-apiofuranosyl)-β-D-glucopyranoside (1), chlorogenic acid (2), niazirin (3), 3,4-dihydroxy-β-phenylethoxy-O-α-L-rhamnopyranosyl-(l→2)-α-L-rhamnopyranosyl-(1→3)-4-O-caffeoyl-β-D-glucopyranoside (4), gallic acid (5), taxifolin (6), and benzyl-carbamo-thioethionate (7).Conclusion: The M. oleifera leaves showed promising antioxidant activities and slightly toxic behavior.


Author(s):  
Packia M. ◽  
Daffodil D. ◽  
Tresina S. ◽  
Mohan R.

The total phenolics, flavonoids and in vitro antioxidant activity of petroleum ether, benzene, ethyl acetate, methanol and ethanol extracts of stem of Drypetes sepiaria were determined using various antioxidant model systems viz, DPPH, hydroxyl, superoxide, ABTS and reducing power. Total phenolic content was estimated by Folin-Ciocalteau method. Flavonoids were determined by Aluminium chloride method. The total phenolics and flavonoids contents were found to be 0.81 g 100 g-1 and 1.12g 100 g-1 respectively in the methanol extract. Among the solvent tested, methanol and ethanol extracts of D. sepiaria stem showed potent in vitro antioxidant activities. This investigation explored that D. sepiaria stem is a potential source of natural antioxidant.


2020 ◽  
Vol 10 (2) ◽  
pp. 69-75
Author(s):  
Mounira Merghem ◽  
Saliha Dahamna

The aim of this study is to evaluate in vitro antioxidant activities of Ruta montana L.  extracts. This activity was evaluated by three methods : DPPH (2, 2'-diphenyl- 1- picrylhydrazy), bleaching of β-carotene and chelation of ferrous iron. Results showed that ethyl acetate extract (EAE) represents the highest amount of total polyphenols, tannins and flavonoids with 257,1 ± 0,703µg gallic acid equivalent/mg of extract,  251 ± 1.41 µg tannic acid equivalent /mg of extract,117,4 ± 3,451 µg quercetin equivalents/mg of extract, 139,5 ± 4,107 µg rutin equivalents/mg of extract, respectively. In the DPPH assay, ethyl acetate extract showed the higher scavenging capacity (IC50 = 0.044 ± 0.001 mg/ml) followed by methanol, aqueous and chloroform extract. Whereas, AqE showed the best chelating effect and the best inhibitory capacity of the coupled oxidation of linoleic acid/ β-carotene. Keywords: Ruta montana L; polyphenols; antioxidant activity; free radical scavenging.


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