Total Phenolic, Flavonoid, Tomatine, and Tomatidine Contents and Antioxidant and Antimicrobial Activities of Extracts of Tomato Plant
Open Access
- 1 January 2015
- journal article
- research article
- Published by Hindawi Limited in International Journal of Analytical Chemistry
- Vol. 2015, 1-10
- https://doi.org/10.1155/2015/284071
Abstract
The purpose of this study was to evaluate the antioxidant and antimicrobial properties of extracts of different fractions of two tomato plant cultivars. The stems, roots, leaves, and whole-plant fractions were evaluated. Tomatine and tomatidine were identified by HPLC-DAD. The leaf extracts from the two varieties showed the highest flavonoids, chlorophyll, carotenoids, and total phenolics contents and the highest antioxidant activity determined by DPPH, ABTS, and ORAC. A positive correlation was observed between the antioxidant capacities of the extracts and the total phenolic, flavonoid, and chlorophyll contents. The Pitenza variety extracts inhibited the growth of pathogens such asE. coliO157:H7,SalmonellaTyphimurium, Staphylococcus aureus, andListeria ivanovii, yielding inhibition halos of 8.0 to 12.9 mm in diameter and MIC values of 12.5 to 3.125 mg/mL. These results suggest that tomato plant shows well potential as sources of various bioactive compounds, antioxidants, and antimicrobials.Keywords
Funding Information
- PROMEP (Clave PROMEP/103.5/12/2051, PROFAPI 00270, 00500, PROFAPI 00533)
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