title: Total Phenolic, Flavonoid, Tomatine, and Tomatidine Contents and Antioxidant and Antimicrobial Activities of Extracts of Tomato Plant.
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 as E. coli O157:H7, Salmonella Typhimurium, Staphylococcus aureus, and Listeria 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.
authors.affiliation: Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000 Ciudad Obregon, SON, Mexico ; Departamento de Ciencias de la Salud, Universidad de Sonora, Campus Cajeme, Boulevard Bordo Nuevo, Ejido Providencia, 85040 Cajeme, SON, Mexico.
authors.forename: Norma Patricia
authors.initials: NP
authors.lastname: Silva-Beltrán
authors.affiliation: Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000 Ciudad Obregon, SON, Mexico.
authors.forename: Saul
authors.initials: S
authors.lastname: Ruiz-Cruz
authors.affiliation: Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000 Ciudad Obregon, SON, Mexico.
authors.forename: Luis Alberto
authors.initials: LA
authors.lastname: Cira-Chávez
authors.affiliation: Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000 Ciudad Obregon, SON, Mexico.
authors.forename: María Isabel
authors.initials: MI
authors.lastname: Estrada-Alvarado
authors.affiliation: Centro de Investigación en Alimentación y Desarrollo A.C., Avenida Río Conchos S/N, Parque Industrial, 31570 Cuauhtémoc, CHIH, Mexico.
authors.forename: José de Jesús
authors.initials: Jde J
authors.lastname: Ornelas-Paz
authors.affiliation: Departamento de Ciencias de la Salud, Universidad de Sonora, Campus Cajeme, Boulevard Bordo Nuevo, Ejido Providencia, 85040 Cajeme, SON, Mexico.
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: López-Mata
authors.affiliation: Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Boulevard Luis Encinas y Rosales s/n, Colonia Centro, 83000 Hermosillo, SON, Mexico.
authors.forename: Carmen Lizette
authors.initials: CL
authors.lastname: Del-Toro-Sánchez
authors.affiliation: Centro de Investigación en Alimentación y Desarrollo A.C., Carretera a la Victoria, 83000 Hermosillo, SON, Mexico.
authors.forename: J Fernando
authors.initials: JF
authors.lastname: Ayala-Zavala
authors.affiliation: Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Boulevard Luis Encinas y Rosales s/n, Colonia Centro, 83000 Hermosillo, SON, Mexico.
authors.forename: Enrique
authors.initials: E
authors.lastname: Márquez-Ríos