Preliminary Phytochemicals and Pharmacologic Activities Assessment of White and Pink Nelumbo nucifera Gaertn. Flowers

2019 ◽  
Vol 891 ◽  
pp. 41-51
Author(s):  
Chanai Noysang ◽  
Nutsuda Boonmatit

The phytochemicals of the ethanolic extracts of petals and stamens of lotus flowers from several lotus cultivars belonging to the Nelumbo nucifera Gaertn. (namely 'lotus white flower' and 'lotus pink flower') were studied by color reaction test and HPTLC analysis. The lotus pink flower stamens showed a highest amount of ethanolic extractives (ca. 18.33±2.14% of dry material weight). The several the ethanolic extracts of N. nucifera petals and stamens showed similar qualitative phytochemicals. The crude extracts revealed the presence of flavonoids, terpenoinds, tannins and polyphenols. The antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl assay. The analyzed lotus pink flower stamens ethanolic extract showed a highest antioxidant activity at IC50 = 0.61±0.16 μg/ml and lotus pink flower petals ethanolic extract showed a highest tyrosinase inhibitory effect at IC50 = 2.25±0.21 μg/ml. N. nucifera flowers could be provide a potential natural source of phytochemicals and could be beneficial to the cosmetic properties.

2019 ◽  
Vol 891 ◽  
pp. 30-40 ◽  
Author(s):  
Chanai Noysang ◽  
Wiphupat Buranasukhon ◽  
Monsicha Khuanekkaphan

The phytochemicals of the ethanolic extracts of unripe pulp and peel of banana fruits from several banana cultivars belonging to the Musa acuminata species (namely 'Kluai Namwa', 'Kluai Hom Thong', 'Kluai Leb Mu Nang', and 'Kluai Khai') were studied by color reaction test and HPTLC analysis. Kluai Khai pulp showed a highest amounts of ethanolic extractives (ca. 9.70±5.84% of dry material weight). The peel several banana showed similar qualitative phytochemicals. The major of phytochemicals identified in these extracts were alkaloids, flavonoids, tannins and polyphenols. The antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl assay. The analysed Kluai Hom Thong peel ethanolic extract showed a highest antioxidant activity at IC50 = 3.25±0.52 μg/ml and Kluai Hom Thong peel ethanolic extract showed a highest tyrosinase inhibitory effect at IC50 = 2.25±0.91 μg/ml. Kluai Hom Thong peel could be provide a potential natural source of bioactive compounds and could be beneficial to the cosmetic properties.


2019 ◽  
Vol 891 ◽  
pp. 52-59
Author(s):  
Chanai Noysang ◽  
Teerarat Pummarin

Benchalokawichian (BLW) remedy is a Thai traditional medicine that has been notified in the List of Medicine Products of the National List of Essential Drugs A.D. 2006 and has long been used as an antipyretic. The phytochemicals of the 70% and 95% ethanolic extracts of were studied by color reaction test and HPTLC analysis. The BLW remedy showed a highest amounts of 70% ethanolic extractives (ca. 3.99 ± 0.60% of dry material weight). The several ethanolic extracts showed similar qualitative phytochemicals. The major of phytochemicals identified in these extracts were alkaloids, flavonoids, tannins, and polyphenols. The antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl assay. The analysed 70% ethanolic extract showed a highest antioxidant activity at IC50= 526.09 µg/ml and both extracts not showed tyrosinase inhibitory effect. The 95% ethanolic extract showed the greatest anti-propionibacterium acnes activity with inhibition zone of 10.10 ± 0.45 mm and minimum inhibitory concentration (MIC) was 5.05 mg/ml


2011 ◽  
Vol 6 (11) ◽  
pp. 1934578X1100601 ◽  
Author(s):  
Abha Chaudhary ◽  
Pushpinder Kaur ◽  
Neeraj Kumar ◽  
Bikram Singh ◽  
Shiv Awasthi ◽  
...  

Albizia species have been shown to have anti-inflammatory and antiallergic properties. However, efficient analytical methods for identification of their active constituents are still lacking. Ultra-performance liquid chromatography coupled with electrospray ionization-quadrupole time-of-flight mass spectrometry (UPLC-ESI-QTOF-MS) was used to study the phenolic composition of the ethanolic extracts of different parts (flowers, leaves, pods and bark) of A. chinensis. In addition, the antioxidant activity of the ethanolic extracts was evaluated by the 1,1-diphenyl-2-picryl hydrazyl (DPPH) free-radical and 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid (ABTS) radical cation scavenging methods. Four compounds were isolated from the ethanolic extract of the flowers and characterized by 1H and 13C NMR spectroscopy as quercetin-3- O-rhamnoside, quercetin, quercetin-3- O-arabinofuranoside, and myricetin-3- O-rhamnoside. Separation and quantification of the phenolics was accomplished using a reversed-phase BEH C18 column with the mobile phase of methanol–water (0.05% formic acid), and detection wavelengths of 360 and 254 nm.


Nutrients ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 832 ◽  
Author(s):  
Hye Ju Han ◽  
Seon Kyeong Park ◽  
Jin Yong Kang ◽  
Jong Min Kim ◽  
Seul Ki Yoo ◽  
...  

To evaluate possibility as a skin whitening agent of Sorghum bicolor (S. bicolor), its antioxidant activity and anti-melanogenic effect on 3-isobutyl-1-methylxanthine (IBMX)-induced melanogenesis in B16/F10 melanoma cells were investigated. The result of total phenolic contents (TPC) indicated that 60% ethanol extract of S. bicolor (ESB) has the highest contents than other ethanol extracts. Antioxidant activity was evaluated using the 2,2’-azino-bis-(3-ethylbenzothiazolin-6-sulfonic acid) diammonium salt (ABTS)/1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging activities and malondialdehyde (MDA) inhibitory effect. These results showed ESB has significant antioxidant activities. Inhibitory effect against tyrosinase was also assessed using L-tyrosine (IC50 value = 89.25 μg/mL) and 3,4-dihydroxy-L-phenylalanine (L-DOPA) as substrates. In addition, ESB treatment effectively inhibited melanin production in IBMX-induced B16/F10 melanoma cells. To confirm the mechanism on anti-melanogenic effect of ESB, we examined melanogenesis-related proteins. ESB downregulated melanogenesis by decreasing expression of microphthalmia-associated transcription factor (MITF), tyrosinase and tyrosinase-related protein (TRP)-1. Finally, 9-hydroxyoctadecadienoic acid (9-HODE), 1,3-O-dicaffeoylglycerol and tricin as the main compounds of ESB were analyzed using the ultra-performance liquid chromatography-ion mobility separation-quadrupole time of flight/tandem mass spectrometry (UPLC-IMS-QTOF/MS2). These findings suggest that ESB may have physiological potential to be used skin whitening material.


Author(s):  
Gupta Meenu ◽  
Nogueira A ◽  
Almeida R ◽  
Oliveira A. I. ◽  
Oliveira R. F. ◽  
...  

Introduction: Plants belonging to the genus Taraxacum have been used in traditional medicine. Nowadays, extracts of these plants have been reported for the treatment of diseases, including liver disorders. Increasing interest and research on these plants also revealed its potential for treating cancer. This study aims to evaluate the antioxidant activity and cytotoxic properties of crude extracts from aerial parts of Taraxacum hispanicum H.Lindb, against human hepatocarcinoma (HepG2). Material and methods: Evaluation of the antioxidant properties was performed using DPPH in vitro test, superoxide scavenging assay and Fe2+ chelating activity. MTT assay was used to determine metabolic activity, for 24 and 48 hours. Results: For antioxidant capacity of the ethanolic extract (overall the one with the best results), IC50 values were 62.4 ± 6.7 μg/ml (DPPH radical scavenging activity) 53.9 ± 10.3 μg/ml (Fe2+ chelating activity) and 2.0 ± 0.3 μg/ml (superoxide scavenging assay). The aqueous and ethanolic extracts had different effects on HepG2 cell viability. Aqueous extract induced cell cytotoxicity in a time and dose-dependent manner, leaving only 52.6% viable cells at a concentration of 200 μg/ml, after 48 h. An increase in the cell viability was seen in the ethanolic extract, from 24 h to 48 h at higher concentrations. Conclusions: Ethanolic extract of T. hispanicum was the most promising, presenting anti-oxidative capacity and only the aqueous extract of the plant presented more relevant cytotoxicity over HepG2 cell line. These activities may be related with the extract phenolic content. However, further studies are needed to elucidate the main mechanisms responsible for these potential effects.


2019 ◽  
Vol 7 (15) ◽  
pp. 2404-2412
Author(s):  
Santun Bhekti Rahimah ◽  
Dhiah Dianawaty Djunaedi ◽  
Arto Yuwono Soeroto ◽  
Tatang Bisri

BACKGROUND: The popular commercially cultivated Pleurotus ostreatus mushroom contains very high nutrients and bioactive compounds with high antioxidant activity. The ethanolic extract seems to be the most active in preparation. AIM: This study has an aim to compare the phytochemical analysis of a fresh, dry and ethanolic extract of Pleurotus ostreatus, to measure the total phenolic content and antioxidant activities in vitro of ethanolic extracts of Pleurotus ostreatus. METHODS: The fresh plant's materials (FPM), dry plants materials (DPM), ethanolic extracts were macerated with 70% (EE70) and 96% ethanol (EE96) of Pleurotus ostreatus which were used for phytochemical analysis, and EE96 was used for antioxidant activity in vitro. The phytochemical analysis was conducted using the Dragendorf and Meyer, FeCl3 test, Salkowsky method, Lieberman method, amyl alcohol, foam test and the NaOH reagent. The total phenol test was carried out using the Follin-Ciocalteu method. The antioxidant activity was tested using the ABTS and H2O2 essay. RESULTS: The phytochemical screening showed that the flavonoid, phenolic compounds, tannin, saponin, alkaloids, and steroids were detected in the FPM, DPM, EE70 and also the EE96. The alkaloid, however, was not identified by the Meyer Reagent in the FPM and DPM. The DPM and EE70 seemed to have the highest amount of saponin based on the foam that was formed. Meanwhile, steroids and flavonoids were detected at a higher level in the EE96, based on the strength of visible colour. However, triterpenoid and quinones could not be identified. In the total phenol test, there was an amount of 6.67 μg phenol in a 1 mg extract sample which was equivalent to 1 mg of Gallic Acid. The EE96 has an IC50 of 108.07 μg/mL for ABTS and an IC50 reduction of 229.17 μg/mL. The process of Pleurotus ostreatus drying did not reduce the content of active substances. The polar active substances seem to be more soluble in the EE70 than the EE96. CONCLUSION: The higher the bioactive substances in the preparation, the more significant the bio-therapeutic effects. Ethanolic extract of Pleurotus ostreatus has a phenol content and a good antioxidant action.  


2017 ◽  
Vol 36 (03) ◽  
Author(s):  
B. R. Sharma ◽  
K. G. Sharma ◽  
Padmashree . ◽  
S. Rustagi ◽  
K. Y. Awasthi

The two species of Catharanthus, C. roseus and C. alba namely ‘rosea’ (Pinkflower) and’ alba ‘(White flower) respectively are used in ayurvedic medicines for number of ailments. The leaves and flowers of both the species of Catharanthus are rich source of alkaloids that have antitumor and anticancer properties. The major compounds like phenols and flavonoids along with moisture, ash, fat, crude fibers and chlorophyll contents of flowers and leaves of C. alba and C. roseus were estimated. The results of above mentioned studies revealed that flowers of both the species contain more number of phenolic and flavonoids contents than leaves. Due to high number of phenolic and flavonoids contents in C. alba (531.26 and 20.05 mg/100g, respectively) and C. roseus (450.20 and 19.00mg/100g, respectively), it shows strong antioxidant activity which makes their potential use as a natural source of antioxidants and can be used in medicinal as well as in food preservation by inhibiting lipid per oxidation. All the parameters studied under the course of experiments for two species of Catharanthus are found to be statistically significant (p£0.001).


2010 ◽  
Vol 120 (3) ◽  
pp. 873-878 ◽  
Author(s):  
Bo Huang ◽  
Xiaoquan Ban ◽  
Jingsheng He ◽  
Jing Tong ◽  
Jun Tian ◽  
...  

2013 ◽  
Vol 31 (2) ◽  
pp. 239-248 ◽  
Author(s):  
P.U. Grisi ◽  
S.C.J. Gualtieri ◽  
S. Anese ◽  
V.C. Pereira ◽  
M.R. Forim

The objective of this study was to evaluate the effect of the ethanolic extract of Serjania lethalis leaves and stems on the diaspore germination and seedling growth of wild poinsettia (Euphorbia heterophylla) and barnyardgrass (Echinochloa crus-galli). The crude ethanolic extract was prepared from 100 g of dry plant material dissolved in 500 ml of ethanol. The extracts were solubilized in a buffer solution containing dimethyl sulfoxide (DMSO) at concentrations of 10.0, 7.5, 5.0 and 2.5 mg mL-1. The effect of these extracts was compared with herbicide oxyfluorfen in bioassays. The ethanolic extracts of S. lethalis leaves and stems inhibited the germination and seedling growth of barnyardgrass and wild poinsettia in a concentration-dependent manner. The reduction in the root length of E. heterophylla seedlings might be attributed to the reduced elongation of metaxylem cells. The phytotoxicity of the extracts ranged according to the receptor species, and for some variables, the inhibitory effect was similar, and even superior, to that of the commercial herbicide. Thus, S. lethalis extracts might be a promising alternative for sustainable weed management.


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