Ver/Abrir - Repositorio Digital - Instituto Politécnico Nacional

ABSTRACT
In recent years it has been a social tendency to look for a healthier way of life
exploring natural options in health care, there is an extended bibliography that
describes the benefits of the consumption of natural compounds from plant
secondary metabolism. Especially, compounds from phenol family have
awakened great interest in scientists. It has been found that berries are some
of the richest fruits in phenols structures. Strawberry (Fragaria x ananassa) is
now in day one of the most popular fruit in the world, not only for its unique is
now in day but also for the benefits to human health of its consumption, due to
the phenolic compounds present in this fruit, particularly flavonoids, which
have shown to have antioxidant properties. Most prominent among the
flavonoids are the anthocyanins, plant colorants responsible for the red color of
strawberries.
Strawberries are an important part of Mexico's economy, mainly because of
their export market. In order to satisfy market needs, Mexican strawberry
producers must pay royalties to get plants. Thus, new strawberry varieties
showing to be competitive with yield of American and European varieties have
been developed in México. However, anything is known about the internal
quality of their fruit. The goal of this study was to evaluate the antioxidant
capacity of the Mexican strawberry fruits, by measuring inhibition of the free
radicals 2,2-difenil-1-picrilhidrazil (DPPH) and the 2,2'azinobis-(3-
etilbenzotiazolin 6-sulfonic-acid) (ABTS) in three phenolic fraction obtained
from mexican varieties CP. Zamorana and CP. Jacona, and also from foreigner
strawberry verities Chiflon, Albion, Festival and Kristal. The flavonoids fraction
showed higher antioxidant capacity than the other.
The antioxidant capacity of Mexican strawberry varieties, make them
competitive with the foreign varieties. Fruits from Jacona and Zamorana
varieties had higher antioxidant activity than those from Albion and Chiflon,
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