Antibacterial activity of plant extracts obtained with alternative organics solvents against food-borne pathogen bacteria

The prickly pear is a cactaceae that have chemical compounds that act as natural antioxidants. In addition, the prickly pear is a plant widely used in semiarid region as it's considered very important forage for animal feed, especially in the dry season. The objectives of this research were to characterize the main classes of phytochemicals, determine the phenols content, flavonoids and anthocyanins and evaluate the antioxidant activity of the prickly pear cultivars Opuntia and Nopalea grown in the semiarid region of Pernambuco in two collection periods (dry and rainy). In the work crude ethanol extracts from cladodes of cultivars (IPA-20, Elephant Ear Mexican, F-08, V-19, Small palm, F-21 and IPA-Sertânia) were used. As for the class of phytochemical compounds from ethanol extract only the flavonoids and steroids were detected in all prickly pear cultivars, in both periods analyzed. The content of phenolic compounds ranges from 1.24 to 5.41 mg GAE g -1 DM, flavonoids 0.90 to 3.43 mg QE g -1 DM, anthocyanins from 0.05 to 0.34 µg QE 100 g -1 DM and antioxidant activity 39.59 to 217.17 µM TEAC g -1 DM. The occurrence of chemical variability and antioxidant activity were observed, both among the botanical cultivars studied and among the collection periods.Keywords: biodiversity and nutrition; cactus pear; flavonoids; phenolic acids; phytochemicals.Practical Application: Use of cladodes of prickly pear cultivars as functional foods in the diet human and animal.

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“…was reported by Brás (2011), Bari et al (2012), Mendez et al (2012) and Soares (2012), collaborating with our results.…”

Section: Phytochemical Prospectingsupporting

confidence: 92%

“…In addition to the detection of tannins and flavonoids, Bari et al (2012) and Mendez et al (2012) detected the presence of saponins and alkaloids. Therefore was used several reagents for the detection of alkaloids in the samples.…”

Section: Phytochemical Prospectingmentioning

confidence: 99%

Seasonal variability of phenolic compounds and antioxidant activity in prickly pear cladodes of Opuntia and Nopalea genres

et al. 2017

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“…Total saponins content extracted from all the three spice extracts was found to be lowest in polar solvents. Our results are contrary to the reports in which the total saponins contents were found in greater quantity in polar solvent extracts of different plants 33,34,35 .…”

Section: Resultscontrasting

confidence: 99%

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2017

IJPSR

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ABSTRACT:Spices have been used since long to enhance the flavor and aroma of our foods. Besides, they also produce several medicinal effects and are used in treating various clinical ailments. The different phytochemicals present greatly influence the biological activities possessed by plants/spices. The present research work investigates the free radical scavenging and acetylcholinesterase (AchE) inhibition activity of different extracts of Elletaria cardamomum, Piper nigrum and Syzygium aromaticum. Total phenol, flavonoid, condensed tannins and saponin contents were also measured. Among the different extracts of spices evaluated for DPPH free radical scavenging, ethanolic extract of S. aromaticum exhibited the highest inhibition with IC 50 value of 42±7.4 µg/ml. This high radical scavenging activity can be directly correlated with the presence of high total phenolic content (310±6.87 mg GAEs/g extract) possessed by the extract. The ethanolic extracts of all three spices had shown better inhibition activity against AChE than other extracts. At 500 µg/mL concentration, S. aromaticum and E. cardamomum ethanolic extracts showed 52.22±3.7 % and 52.95±2.9 % AchE inhibition respectively. These findings suggest that these spices could act as an anticholinesterase agent and also are an efficient free radical scavenger, which may be helpful in preventing or alleviating patients suffering from Alzheimer's disease.

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“…The presence of tannins was detected in the IPA-200149 variety in the dry season, and the IPA-100003, IPA-200016, IPA-200205 varieties in the rainy season. The presence of flavonoids and steroids on cladodes of cactus pear (Opuntia ficus indica) was cited by Brás (2011) and Soares (2012), the presence of tannins in the cactus pear cladodes was reported by Mendez et al (2012) studying Opuntia ficus indica, and Bari et al (2012) researching Opuntia monacantha, corroborating the results obtained in this work. This means that the species of the genera Opuntia and Nopalea have secondary metabolites with bioactive properties and can act to prevent disease.…”

Section: Chemical Prospectionsupporting

confidence: 89%

Genetic diversity and seasonal chemical profile by 1H NMR and cytotoxic activity in Opuntia and Nopalea genres

Francisco¹,

Albericio²,

Riselane³

et al. 2016

J. Med. Plants Res.

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The cactus pear (Opuntia spp.) is known to have bioactive compounds which work in the prevention of various diseases, especially cancer. The objectives of the study were to characterize the chemical profile and genetic diversity, through chromatic tests and ) shows limited growth inhibitory effect on the cancer cell lines examined. It is concluded that the cytotoxic activity of cactus pear cladodes is attributed to phenolic compounds especially the flavonoids. It is recommended that population at risk utilize these materials as preventative natural dietary supplements against cancer.

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Antibacterial activity of plant extracts obtained with alternative organics solvents against food-borne pathogen bacteria

Cited by 48 publications

References 19 publications

Seasonal variability of phenolic compounds and antioxidant activity in prickly pear cladodes of Opuntia and Nopalea genres

Seasonal variability of phenolic compounds and antioxidant activity in prickly pear cladodes of Opuntia and Nopalea genres

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Genetic diversity and seasonal chemical profile by 1H NMR and cytotoxic activity in Opuntia and Nopalea genres

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