scholarly journals Phytotoxicity, cytotoxicity and chemical composition of Spondias mombin Linn. Stem bark

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Kissinger Obaogie Orumwensodia ◽  
Patrick Ojeifo Uadia ◽  
Muhammed Iqbal Choudhary

Abstract Background Spondias mombin Linn. is a tropical climate plant with wide applications in ethnomedicinal practice. This study evaluates the phytotoxicity, cytotoxicity and chemical composition of the plant’s stem bark. Methods Dried stem bark sample of Spondias mombin Linn. was subjected to exhaustive extraction and partitioned into sub-fractions (hexane-ethylacetate, ethylacetate, ethylacetate-methanol and methanol) by graded polarity technique. The phytotoxicity and cytotoxicity indices of the crude hydro-ethanol extract and fractions were evaluated using Lemna minor and brine shrimp lethality assays, respectively, while chemical composition of the oily hexane:ethylacetate fraction was determined by gas chromatography-mass spectroscopy (GC-MS) technique. Results Phytotoxicity was dose-dependent which ranged from low (crude plant extract), moderate (hexane-ethylacetate and methanol fractions), high (ethylaacetate-methanol fraction) to significant toxicity (ethylacetate fraction) at the highest dose. However, for brine shrimp lethality assay only hexane-ethylacetate (LD50: 284.02 μg/mL) and ethylacetate (LD50: 210.24 μg/mL) fractions were cytotoxic at the highest dose. The GC-MS profile of the oily hexane:ethylacetate fraction identified sixty-eight compounds comprising hydrocarbons, fatty acids, alcohols, steroids, nitrogen and fluoride-containing compounds, terpenes and esters. Conclusion This study concludes that fractions of Spondias mombin Lin. could be potentially toxic. While its phytotoxic potential can be useful in the agrochemical industry for the production of natural herbicides, its cytotoxic property can be cautiously harnessed for ethnomedicinal purposes.

2021 ◽  
Vol 10 (2) ◽  
pp. 117-125
Author(s):  
Joseph M. Kathare ◽  
◽  
James M Mbaria ◽  
Joseph M Nguta ◽  
Gervason A Moriasi ◽  
...  

Microbial infections are feared to cause over 10 million deaths by the year 2050, whereby 50% of the global burden squarely lies in less developed countries of Africa and Asian continents. The current drugs have suffered resistance by previously susceptible strains, are associated with severe side effects, among other therapeutic and economic drawbacks, hence the need for alternatives. Despite the widespread usage of medicinal plants by over 80% of the global population to treat common ailments, including microbial infections, only a few have been empirically validated. Croton megalocarpus is used to treat microbial-associated infections like pneumonia and typhoid among the Agikuyu community of Kenya. However, its healing claims and safety have not been evaluated empirically to date, hence this study. We investigated the antimicrobial, cytotoxicity, acute oral toxicity, and qualitative phytochemical composition of the aqueous and methanolic stem bark extracts of C. megalocarpus. The disk diffusion and broth microdilution techniques described by the Clinical Laboratory Standards Institute (CLSI) were adopted for antimicrobial assays. The acute oral toxicity effects of the studied plant extracts were evaluated according to the Organisation of Economic Co-operation and Development (OECD) guideline document number 425. The brine shrimp lethality assay technique was used to appraise the cytotoxic effects of the studied plant extracts. Qualitative phytochemical screening was performed following standard procedures. The results revealed that all the studied plant extracts had varied antimicrobial effects on selected microbial strains and showed MIC values of <1000 µg/ml indicating their antimicrobial potential. Moreover, the studied plant extracts had LC50 values of >100 µg/ml and >2000 mg/Kg bw in the brine shrimp lethality and acute oral toxicity assays, respectively, demonstrating their safety. Antimicrobial- associated phytocompounds were detected in the studied plant extracts suggesting they were responsible for the reported bioactivity. Further studies to establish the specific mode(s) of antimicrobial action, toxicological, and safety should be performed. Furthermore, antimicrobial investigations of the studied plant extracts on other clinically significant microbial strains and the isolation, characterization, and optimization of antimicrobials from the studied plant extracts should be done.


Author(s):  
AKM Shahidur Rahman ◽  
Oqna; Arslan ◽  
Rama Saha ◽  
Nirupama Talukder ◽  
SMA Khaleque ◽  
...  

The crude methanol extract of leaves, seeds and stem-bark of Clitoria ternatea demonstrated a significant cytotoxic activity in a brine shrimp lethality bioassay test. The LC50 values of the crude methanol extract of leaves, seeds and stem-bark were found to be 25.82, 110.92, 179.89 μgm/ml respectively Among them crude methanol extract of leaves (25.82 μgm/ml) and methanol fraction of leaves (22.28 μgm/ml) showed a very promising cytotoxic activity. Further studies have been suggested to discover a novel bioactive compound from methanol fraction of leaves of Clitoria ternatea.   DOI: 10.3329/bjpp.v22i1.3564Bangladesh J Physiol Pharmacol 2006; 22(1/2) : 18-21


2014 ◽  
Vol 1 (1) ◽  
pp. 32
Author(s):  
Ross Nurul Rohmah ◽  
Nuniek Ina Ratnaningtyas ◽  
Ari Asnani

Ganoderma lucidum is polyporus fungi from Basidiomycetes which can be used as traditional medicines. Toxicity test with Brine Shrimp Lethality Test (BST) method using Artemia salina was conducted to find out toxic effect of G.lucidum. An extract would have toxic effect if the LC50 < 1000 µg/ml. The aims of this experiment were to know about the toxicity level from G.lucidum with Brine Shrimp Lethality Test (BST) method and determined the concentration of fruiting body extract of G.lucidum which had the best toxicity effect in LC50. There were two extraction methods used in this experiment, first one stage extraction and then multilevel extraction with hexane, ethyl acetate, and ethanol. Each solvent was made in 1000 ppm, 500 ppm, 250 ppm, and 125 ppm. This process was repeated for three times. This experiment used G.lucidum extract which was tested to A.salina and secunder compound metabolit test from the most toxic G. lucidum was done with phytochemical analysis. The result indicated that fruiting body extract from G.lucidum could kill A.salina because all extract was positively contained alkaloid and terpenoid but negatively contained flavonoid. Fruiting body extract from G.lucidum which had lowest LC50 wass ethyl asetat extract with one stage extraction in concentration 53,70 ppm and highest LC50 was ethanol extract with multilevel extraction in concentration 501,18 ppm.


2019 ◽  
Vol 819 ◽  
pp. 111-117 ◽  
Author(s):  
Papatsiri Janyapanich ◽  
Chatchanok Kotipan ◽  
Kritsanat Teerachawalwong ◽  
Surawut Watana ◽  
Nopparat Nuntharatanapon

Excessive of ultraviolet light causes abnormality of melanin production. Antioxidants and antityrosinase agents are able to reduce hyperpigmentation by interrupting the process of melanin production. The purpose of this study is to examine the antioxidant and antityrosinase activities as well as toxicity of both 80% ethanol and aqueous extracts of Alpinia nigra by DPPH free radical scavenging assay, mushroom tyrosinase assay and brine shrimp lethality bioassay. Alpinia nigra extracts showed positive result on antioxidant and antityrosinase activities. We found that extract of A. nigra’s leaf has the most effective activity of antioxidant and antityrosinase among other parts of this plant. The ethanol and aqueous extracts from the leaf of A. nigra at the concentration of 125 μg/mL showed % inhibition for free radical scavenging as 94.97% and 93.35%, respectively. The IC50 values of antioxidant were 39.83±16.21 and 46.33±15.22 μg/mL, respectively. In addition, ethanol extract of the leaf from A. nigra at the concentration of 1,000 μg/mL produced 92.61% inhibition of mushroom tyrosinase activity, whereas aqueous extract of A. nigra’s leaf at the same concentration produced 74.47% inhibition. The IC50 of antityrosinase activities were 142.81±13.32 and 406.88±66.43 μg/mL for ethanol and aqueous extracts, respectively. Moreover, the brine shrimp lethality bioassay showed that all extracts were non-toxic (LC50 >1,000 μg/mL). In conclusion, the ethanol extract of A. nigra’s leaf may be beneficial and provide the novel and safe source for antioxidant and whitening agent.


2009 ◽  
Vol 2 (1) ◽  
pp. 169-177
Author(s):  
M. A. Rahman ◽  
M. S. Rana ◽  
M. M. Zaman ◽  
S. A. Uddin ◽  
R. Akter

The antioxidant, antibacterial and cytotoxic properties of methanol extract of Urtica crenulata (syn: Laportea crenulata Gaud) stem has been investigated in the present study. The antioxidant and cytotoxic activity of the Urtica crenulata methanol extract were assessed by DPPH free radical scavenging method and brine shrimp lethality bioassay method, respectively. The antibacterial activity of the plant extract (500 μg/disc) was also carried out by disc diffusion technique. Stem extract showed DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging effect compared with ascorbic acid. IC50 value of ascorbic acid and stem extract was found 14.72 μg/ml and 1468.9 μg/ml, respectively. In antibacterial experiment, Urtica crenulata stem extract showed 8, 14 and 10 mm of diameter of zone inhibition against Salmonella typhi, Shigella flexneri and Shigella sonnei, respectively and 9 and 8 mm of diameter of zone inhibition against Bacillus subtilis and Bacillus cereus but no activity was observed against Staphylococcus aureus. In brine shrimp lethality assay, the LC50 value of the extract was found 104.0 μg/ml, which indicates that the extract has high cytoxic effect. The present study demonstrates that methanol extract of Urtica crenulata stem has significant cytotoxic effect. The extract also showed some moderate antibacterial and minimum significant antioxidant effects.  Keywords: Urtica crenulata;  Antioxidant; Antibacterial; Cytotoxic; BHT. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i1.2872             J. Sci. Res. 2 (1), 169-177 (2010) 


Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 47
Author(s):  
Sandeep Waghulde ◽  
Mohan K. Kale ◽  
VijayR. Patil

The present study was conducted to test for in vivo Brine Shrimp Lethality Assay (BSLA) of the Aqueous and ethanolic extracts of Annona reticulata with Allium fistolisum and Brassica oleraceaeand correlate cytotoxicity results with known pharmacological activities of the plants. Cytotoxicity was evaluated in terms of LC50 (lethality concentration). Ten nauplii were added into three replicates of each concentration of the plant extract. After 24 h the surviving brine shrimp larvae were counted and LC50 was assessed. Results showed that the extracts of Annona reticulata with Allium fistolisumand Brassica oleraceaewere potent against the brine shrimp when compared alone with combined extracts. It indicated that bioactive components are present in these plants that could be accounted for its pharmacological effects. Thus, the results support the uses of these plant species in traditional medicine.


2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Jahangir Khan Achakzai ◽  
Muhammad Anwar Panezai ◽  
Muhammad Ayub Kakar ◽  
Abdul Manan Kakar ◽  
Shahabuddin Kakar ◽  
...  

In this study, GC-MS analysis has shown that whole plant butanol fraction of rheum ribes (WBFRR) comprises of 21 compounds which exhibited anticancer (MCF-7) activity having IC50 value of 36.01± 0.26. MTT assay (MCF-7), Oxidative Burst assay using chemiluminescence technique, and B-Hatching techniques were the methods used for anticancer MCF-7, anti-inflammatory, and Brine Shrimp Lethality Assay (BSLA). GC-MS was used for structural elucidation. Whole plant methanol extract of rheum ribes (WMERR), whole plant n-hexane fraction of rheum ribes (WHFRR), and whole plant aqueous fraction of rheum ribes (WAFRR) were inactive against anticancer (MCF-7) cell line. Whole plant methanol extract of rheum ribes (WMERR), whole plant aqueous fraction of rheum ribes (WAFRR) and whole plant butanol fraction of rheum ribes (WBFRR) showed anti-inflammatory activity on ROS having IC50 value of 23.2±1.9, 24.2±2.7 and 12.0±0.6. Whole plant butanol fraction of rheum ribes (WBFRR) showed Brine Shrimp Lethality with LD50 693.302 while whole plant methanol extract of rheum ribes (WMERR) and whole plant aqueous fraction of rheum ribes (WAFRR) showed high lethality at highest concentration. This study revealed that whole plant butanol fraction of rheum ribes (WBFRR) exhibited significant anticancer (MCF-7) activity. In the near future, the constituent of whole plant butanol fraction of rheum ribes (WBFRR) can be the alternative drug against MCF-7 cell line with least toxicity and side effects.


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