Pharmacognosy Magazine

SHORT COMMUNICATION
Year
: 2011  |  Volume : 7  |  Issue : 26  |  Page : 165--170

Phytochemical screening, antioxidant, and antimicrobial activities of the crude leaves«SQ» extract from Ipomoea batatas (L.) Lam


Márcia Thaís Pochapski1, Eliana Cristina Fosquiera2, Luís Antônio Esmerino3, Elizabete Brasil dos Santos2, Paulo Vitor Farago3, Fábio André Santos2, Francisco Carlos Groppo1 
1 Department of Pharmacology, Anesthesiology and Therapeutics, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
2 Department of Dentistry, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil
3 Department of Phamarcy, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil

Correspondence Address:
Francisco Carlos Groppo
Piracicaba Dental School, University of Campinas - FOP/UNICAMP, Av. Limeira 901, CEP 13414-903, Piracicaba, SP
Brazil

Background: Ipomoea batatas (L.) Lam., popularly known as sweet potato (SP), has played an important role as an energy and a phytochemical source in human nutrition and animal feeding. Ethnopharmacological data show that SP leaves have been effectively used in herbal medicine to treat inflammatory and/or infectious oral diseases in Brazil. The aim of this research was to evaluate the phytochemical, antioxidant, and antimicrobial activities of the crude leaves«SQ» extract of SP leaves. Materials and Methods: The screening was performed for triterpenes/steroids, alkaloids, anthraquinones, coumarins, flavonoids, saponins, tannins, and phenolic acids. The color intensity or the precipitate formation was used as analytical responses to these tests. The total antioxidant capacity was evaluated by the phosphomolybdenum complex method. Antimicrobial activity was made by agar disk and agar well diffusion tests. Results: The phytochemical screening showed positive results for triterpenes/steroids, alkaloids, anthraquinones, coumarins, flavonoids, saponins, tannins, and phenolic acids. Total contents of 345.65, 328.44, and 662.02 mg were respectively obtained for alkaloids, anthraquinones, and phenolic compounds in 100 g of the dry sample. The total antioxidant capacity was 42.94% as compared to ascorbic acid. For antimicrobial studies, no concentration of the SP freeze dried extract was able to inhibit the growth of Streptococcus mutans, S. mitis, Staphylococcus aureus, and Candida albicans in both agar disk and agar well diffusion tests. Conclusions: SP leaves demonstrated the presence of secondary metabolites with potential biological activities. No antimicrobial activity was observed.


How to cite this article:
Pochapski MT, Fosquiera EC, Esmerino LA, dos Santos EB, Farago PV, Santos FA, Groppo FC. Phytochemical screening, antioxidant, and antimicrobial activities of the crude leaves' extract from Ipomoea batatas (L.) Lam.Phcog Mag 2011;7:165-170


How to cite this URL:
Pochapski MT, Fosquiera EC, Esmerino LA, dos Santos EB, Farago PV, Santos FA, Groppo FC. Phytochemical screening, antioxidant, and antimicrobial activities of the crude leaves' extract from Ipomoea batatas (L.) Lam. Phcog Mag [serial online] 2011 [cited 2019 Nov 20 ];7:165-170
Available from: http://www.phcog.com/article.asp?issn=0973-1296;year=2011;volume=7;issue=26;spage=165;epage=170;aulast=Pochapski;type=0