The use of black pepper (Piper guineense) as an ecofriendly antimicrobial agent to fight foodborne microorganisms

2022 ◽  
Author(s):  
Mohamed E. Abd El-Hack ◽  
Nahed A. El-Shall ◽  
Nagwa I. El-Kasrawy ◽  
Mohamed T. El-Saadony ◽  
Manal E. Shafi ◽  
...  
Keyword(s):  
Antimicrobial Agent ◽  
Black Pepper ◽  
Piper Guineense

scholarly journals Antioxidative Properties and Inhibition of Key Enzymes Relevant to Type-2 Diabetes and Hypertension by Essential Oils from Black Pepper

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Ganiyu Oboh ◽  
Ayokunle O. Ademosun ◽  
Oluwatoyin V. Odubanjo ◽  
Ifeoluwa A. Akinbola
Keyword(s):  
Type 2 Diabetes ◽  
Essential Oil ◽  
Enzyme Activities ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Black Pepper ◽  
Converting Enzyme ◽  
Piper Guineense ◽  
Key Enzymes

The antioxidant properties and effect of essential oil of black pepper (Piper guineense) seeds onα-amylase,α-glucosidase (key enzymes linked to type-2 diabetes), and angiotensin-I converting enzyme (ACE) (key enzyme linked to hypertension) were assessed. The essential oil was obtained by hydrodistillation and dried with anhydrous Na2SO4, and the phenolic content, radical [1,1-diphenyl-2 picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) and nitric oxide (NO)] scavenging abilities as well as the ferric reducing antioxidant property (FRAP) and Fe2+-chelating ability of the essential oil were investigated. Furthermore, the effect onα-amylase,α-glucosidase, and ACE enzyme activities was also investigated. The characterization of the constituents was done using GC. The essential oil scavenged DPPH*, NO*, and ABTS* and chelated Fe2+.α-Pinene,β-pinene, cis-ocimene, myrcene, allo-ocimene, and 1,8-cineole were among the constituents identified by GC. The essential oil inhibitedα-amylase,α-glucosidase, and ACE enzyme activities in concentration-dependent manners, though exhibiting a stronger inhibition ofα-glucosidase thanα-amylase activities. Conclusively, the phenolic content, antioxidant activity, and inhibition ofα-amylase,α-glucosidase, and angiotensin-1 converting enzyme activities by the essential oil extract of black pepper could be part of the mechanism by which the essential oil could manage and/or prevent type-2 diabetes and hypertension.

scholarly journals Toxicity and spraying schedules of a biopesticide prepared from Piper guineense against two cowpea pests

2008 ◽  
Vol 43 (No. 3) ◽  
pp. 103-108 ◽  
Author(s):  
A.M. Oparaeke
Keyword(s):  
Untreated Control ◽  
Insect Pests ◽  
Agricultural Research ◽  
Integrated Management ◽  
Limited Resource ◽  
Black Pepper ◽  
West African ◽  
Piper Guineense ◽  
African Black ◽  
Cropping Seasons

The toxicity of three concentrations (5%, 10% and 20% w/v) and spraying schedules (2, 4 and 6 weekly applications) of an extract from West African black pepper, <i>Piper guineense</i>, for managing two major post-flowering pests of cowpea, <i>Vigna unguiculata</i>, was investigated in two cropping seasons at the Research Farm of the Institute for Agricultural Research, Ahmadu Bello University, Zaria, Nigeria. The insect pests were the larvae of <i>Maruca vitrata</i> (Lepidoptera: Pyralidae) and the cowpea coreid bug, <i>Clavigralla tomentosicollis</i> (Hemiptera: Coreidae). The higher concentrations (10% and 20% w/v) and more frequent applications (4 and 6/week) significantly (<i>P</i> < 0.05) reduced the numbers of the two insect pests compared to the untreated control in both years. Pod damage was significantly reduced and grain yields consequently increased in treated plots compared with the other extract treatments and the untreated control. West African black pepper extract applied at higher concentrations and more frequently could play an important role in integrated management of pests’ infestations on field cowpea managed by limited resource farmers in third world countries.

scholarly journals The sensitivity of flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), on cowpea to three concentrations and spraying schedules of Piper guineense Schum. & Thonn. extracts

2010 ◽  
Vol 42 (No. 3) ◽  
pp. 106-111 ◽  
Author(s):  
A.M. Oparaeke
Keyword(s):  
Limited Resource ◽  
Good Alternative ◽  
Black Pepper ◽  
Flower Bud ◽  
Megalurothrips Sjostedti ◽  
Piper Guineense ◽  
Insecticide Treatment ◽  
Synthetic Insecticide ◽  
African Black ◽  
Untreated Check

The extracts of pods of West African black pepper, <i>Piper guineense</i>, at 5, 10 and 20% (w/v), were applied at two, four and six weekly schedules to control the legume flower bud thrips, <i>Megalurothrips sjostedti</i> on flowers of cowpea, <i>Vigna unguiculata</i>. The trials were conducted for 2 years under rain fed conditions in the northern Guinea savanna region of Nigeria. The results showed that the <i>M. sjostedti</i> population was significantly controlled on treated plots compared with the untreated check in both years. The extracts at the 20 and 10% rates and with six or four weekly applications significantly (<i>P</i> < 0.05) reduced thrips pressure on cowpea flowers, were better than the 5% extract at all spraying schedules, and had the same efficacy as the synthetic insecticide treatment. Pod density per plant was significantly higher (<i>P</i> < 0.05) on plots treated with the 20% extract at six or four weekly applications compared to other extract rates and was similar to that of the synthetic insecticide treatment. Thus, the extracts could be a good alternative to the synthetic insecticides on organically managed farms as well as on farms of limited resource farmers in the tropics and subtropics.

scholarly journals Insecticidal Activities of Aqueous Extracts of Five Nigerian Aromatic Spices against Garden Eggplant Defoliators and Fruit Borer Leucinodes orbonalis Guenee: Lepidoptera: Crambidae

2021 ◽  
Vol 47 (3) ◽  
pp. 1322-1329
Author(s):  
Juliana A. Ugwu ◽  
Kehinde T. Kareem ◽  
Julius O. Aluko
Keyword(s):  
Zingiber Officinale ◽  
Black Pepper ◽  
Leaf Damage ◽  
Home Garden ◽  
Aqueous Extracts ◽  
Chilli Pepper ◽  
Piper Guineense ◽  
Mean Values ◽  
Leucinodes Orbonalis ◽  
Fruit Borer

 The study evaluated the prospects of aqueous extracts of five Nigerian spices against garden eggplant defoliators and fruit borer (Leucinodes orbonalis) in the field. The treatments consisted of Piper guineense (black pepper), Aframomum melegueta (aligator pepper), Eugenia aromatica (cloves), Zingiber officinale (ginger), Capsicum annum (chilli pepper) and untreated check (control). All the aqueous extracts evaluated reduced leaf damaged by defoliators on garden eggplant compared to control. P. guineense, with mean value of 11.02 number of perforations, was the most effective against defoliators, followed by E. aromatica (12.97) reducing leaf damage by 39.64 and 28.74%, respectively. However, their efficacies against defoliating insects were not significantly different (p > 0.05) among other extracts. P. guineense was also more effective than other spices against infestations by garden eggplant fruit borer and larvae density on fruits with mean values of 1.07 and 0.47, respectively. Plots treated with P. guineense recorded highest fruit yield (629 g/plant), followed by E. aromatica (219.3 g/plant). Piper guineense and E. aromatica extracts were thus more efficacious than other spices against defoliating and fruit boring insects of garden eggplants. Adopting the applications of extracts from these spices in home garden will minimize environmental and health hazards associated chemical pesticides and enhance healthy living among the populace. Keywords: spices, aqueous extracts, garden eggplant, Leucinodes orbonalis.

Comparative evaluation of antimicrobial properties of piperidine and apple cider vinegar on Streptococcus mutans and in-silico demonstration of the mechanism of action

2021 ◽  
Vol 13 (1) ◽  
pp. 42-50
Author(s):  
Shweta R ◽  
Geeta I B ◽  
Aravind Ganessin
Keyword(s):  
Antimicrobial Agent ◽  
Extracellular Polymeric Substances ◽  
Antimicrobial Agents ◽  
Wide Spectrum ◽  
Black Pepper ◽  
Bacterial Biofilm ◽  
Piper Nigrum ◽  
Apple Cider ◽  
Wide Range

In the seventeenth century, Antonie van Leeuwenhoek first observed “animalcules” swarming on living and dead matter out of curiosity he discovered these “animalcules” on his own teeth, it is reasonable to suggest that this early study of dental plaque was the first documented evidence of the existence of microbial biofilms. Biofilm is an association of micro-organisms in which microbial cells adhere to each other on a wide range surfaces i.e. biological and inert surfaces within a self-produced matrix of extracellular polymeric substances (EPS). Bacterial biofilm is infectious in nature and can result in infections. The microbial biofilm of caries is diverse and contains many facultative and obligate anaerobic bacteria, S. mutans, is the most common acid producer, primarily associated with caries. Due to increased resistance to antibiotics and other antimicrobial agents there is a need for effective and economical way to control the oral biofilm. Chlorhexidine is the most commonly used antimicrobial agent in dentistry as they destroy wide spectrum of microrganisms. Black pepper (Piper nigrum L.) is used in traditional medicinal systems as an antimicrobial due to presence of volatile compounds, tannins, phenols and various unknown substances. Similarly, acetic acid in apple cider vinegar effective against several types of bacteria and acts as an antimicrobial agent. Methodology: The current study focuses on In-vitro studies on biofilm establishment by S. mutans followed by competitive quenching of the biofilm by Piperidine from black pepper and apple cider vinegar which was carried out at 50,100 150µL concentrations using bacterial growth assessment by spectrophotometer and crystal violet assay. Chlorhexidine has been used as the positive control. Conclusion: Statistical analysis of the results was carried out to determine the correlation between the intensity of biofilm and the concentration of the test materials to evaluate the competence of the three candidate materials tested. The mechanism of anti-biofilm activity has been demonstrated through insilico docking between Piperidine and S. mutans. The study predicts the prospects of Piperidine based product formulations for dental treatments.

scholarly journals Quality characteristics of stored tomato fruit treated with two formulations of African black pepper

2018 ◽  
Vol 5 (9) ◽  
pp. 249-259
Author(s):  
Grace O. Babarinde ◽  
Gabriel O. Adegoke ◽  
Rahman Akinoso ◽  
R. Adekanye Bosede
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid ◽  
Essential Oil ◽  
Aqueous Extract ◽  
Tomato Fruit ◽  
Black Pepper ◽  
Viable Count ◽  
Soluble Solids ◽  
Piper Guineense ◽  
African Black

Tomato Solanum lycopersicum L. (Solanales: Solanaceae) is highly perishable and requires postharvest treatment to extend its shelf life. Use of synthetic chemicals to control post-harvest loss in tomato has adverse effect on health and there is need to explore natural alternatives to chemical. Two formulations of African black pepper Piper guineense Schumach. (Piperales: Piperaceae), aqueous extract and essential oil, were evaluated as preservatives for Roma type tomato fruit. Tomato fruits were treated with different concentrations of aqueous extracts and undiluted essential oil and stored under refrigeration condition. Samples were taken at 5-days interval and analyzed for weight loss, total soluble solids and ascorbic acid. Total Viable Count (TVC) and total mould count (TMC) were determined. Chemical composition of essential oil was identified using gas chromatography-mass spectrometer. Percent weight loss (PWL) in aqueous extract-treated tomato (0.0%-0.68%) was lower than the control (0.3%-19.97%). The total soluble solid (brix) of samples in untreated fruit was lower than fruit treated with higher of P. guineense. Ascorbic acid contents were higher in aqueous extract-treated samples than the control. Essential oil-treated fruit had lower physiological weight loss TVC and TMC than the control. Twelve compounds were identified in P. guineense essential oil, the most of which were b-sesquiphellandrene (23.7%). The P. guineense aqueous extract or essential oil is recommended as a bio-rational preservative for postharvest storage of tomato.

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