Comparative Evaluation of the Antimicrobial Activities of Cashew (Anacardium occidentale), Neem (Azadirachta indica), Guava (Psidium guajava) and Bitter-leaf (Vernonia amygdalina) chewing sticks and Herbal Toothpaste against Streptococcus mutans

2016 ◽  
Vol 1 (1) ◽  
pp. 28-34 ◽  
Keyword(s):  
Streptococcus Mutans ◽  
Azadirachta Indica ◽  
Comparative Evaluation ◽  
Psidium Guajava ◽  
Antimicrobial Activities ◽  
Anacardium Occidentale ◽  
Vernonia Amygdalina ◽  
Chewing Sticks

scholarly journals Flavonoids extracts from Psidium guajava, Vernonia amygdalina, and Azadiracta indica exhibited synergetic inhibitory activities against some food spoilage microorganisms

2021 ◽  
Vol 1 (1) ◽  
pp. 15-21
Author(s):  
Iyanuloluwa Oluwajobi ◽  
Adamu Yusuf Kabiru ◽  
Ali Audu Jigam
Keyword(s):  
Antimicrobial Agents ◽  
Tomato Fruit ◽  
Psidium Guajava ◽  
Antimicrobial Activities ◽  
Inhibitory Effect ◽  
Food Spoilage ◽  
Vernonia Amygdalina ◽  
Synthetic Drugs ◽  
Inhibitory Activities ◽  
Spoilage Microorganisms

Background: Flavonoids from medicinal plants have been reported to be a possible alternative to synthetic drugs due to their antimicrobial activities. In the present study, flavonoids extracts from the leaves of Psidium guajava, Vernonia amygdalina, and Azadiracta indica were evaluated for antibacterial and anti-fungi activities against some microbial isolates from spoiled tomato fruit. Methodology: Food spoilage microorganisms were isolated from spoiled tomato fruit. Flavonoids were isolated from the leaves of P. guajava, V. amygdalina, and A. indica, and were evaluated for their inhibitory activities against the isolated microorganisms using standard protocols. Results: The flavonoids extract demonstrated dose-dependent antimicrobial activities. Flavonoids extracts from V. amygdalina exhibited an inhibitory effect on C. tropicalis, K. pneumonaie, M. roseus, and P. aeruginosa with maximum inhibition diameters (MID) of 17.00±0.05, 25.00±0.45, 15.00±0.05, and 16.00±0.34 mm while the flavonoids from P. guajava exhibited inhibitory effects on the same organism with MID of 15.00±0.05, 14.00±0.10, 16.00±0.55, 15.00±0.43 and 14.00±0.05 mm respectively, while the flavonoids extract from A. indica exhibited the least activity on the bacteria and fungi isolates. Results of the MICs and MBC revealed that the gram-positive bacteria tested (M. roseus & S. faecalis) were more susceptible to inhibition by the flavonoids extract of the plants. The combination of total flavonoids from leaves of P. guajava and V. amygdalina exhibited higher and synergetic antimicrobial activities against all the tested organisms when compared with individual flavonoids extracts. This combination could serve as a potential source of novel antimicrobial agents for food industry.

scholarly journals Intestinal ameliorative effects of traditional Ogi-tutu, Vernonia amygdalina and Psidium guajava in mice infected with Vibrio cholera

2016 ◽  
Vol 16 (2) ◽  
pp. 620 ◽  
Author(s):  
Olufunke B. Shittu ◽  
Olusola L. Ajayi ◽  
Samuel O. Bankole ◽  
Temitope O.S. Popoola
Keyword(s):  
Psidium Guajava ◽  
Vernonia Amygdalina ◽  
Vibrio Cholera

scholarly journals In vitro Antioxidant Activity and Inhibition of Fe2+ and SNP Lipid Peroxidation of African Mistletoes (Tapinanthus globiferus) from Three Selected Host Plants in Jos Plateau State Nigeria

2019 ◽  
pp. 1-10
Author(s):  
Jane-Rose I. Oche ◽  
Titilayo O. Johnson ◽  
Augustina O. Akinsanmi ◽  
Kiri H. Jaryum ◽  
Timothy Francis
Keyword(s):  
Nitric Oxide ◽  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Psidium Guajava ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Vernonia Amygdalina ◽  
Significant Difference ◽  
Dpph Radical Scavenging

Aim: The aim of this study was to investigate and compare the antioxidative properties of the mistletoe plant obtained from three different host species namely Psidium guajava, Vernonia amygdalina and Moringa olifera lam. Study Design: Experimental Design Place and Duration of Study: Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences and Department of Biochemistry, College of Health Sciences, University of Jos, Nigeria. Methodology: Crude methanolic leaf extracts were studied for their antioxidative properties; Iron reducing and Iron-chelating activities, Nitric oxide (NO) radical and 2,2-diphenyl 1-picrylhydrazyl (DPPH) radical scavenging activities and the lipid peroxidation and thiobarbituric acid reaction (TBAR) methods. One way ANOVA was used for the result analysis with P<.05 for significant difference. Results: Mistletoes from Psidum guajava (MSPG) had significantly higher reducing property (0.16 – 0.20mg/mL); the chelating property of Mistletoes from Moringa olifera (MSMO) was significantly lower (45.7 – 58.9%); DPPH radical scavenging activity had no significant difference; and Nitric oxide scavenging activity was significantly higher in MSPG (72.1% in 75mg/mL) than the extracts from other hosts. MSPG had significantly higher TBAR inhibition using both FeSO4 (77.8% at 125µg/mL) and Sodium nitroprusside (61.6+1.0% at 125µg/mL) with an IC50 of 30.27µg/mL . Extract of Tapinanthus globiferus leaves from Psidium guajava had more antioxidative activities in the TBARs followed by Tapinanthus globiferus leaf extract from Vernonia amygdalina (MSVA). Conclusion: From the study, mistletoes from Psidium guajava had higher antioxidant activity compared to other hosts, which probably justifies its use for treatment of cancer in traditional medicinal practice.

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