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2014, Number 1

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Rev Cubana Plant Med 2014; 19 (1)

Kalanchoe daigremontiana Raym.-Hamet. & H. and its potential use as a source of natural antioxidants and colorants

Puertas MMA, Tobón GJ, Arango V

Language: Spanish
References: 16
Page: 61-68
PDF size: 62.41 Kb.


ABSTRACT

Introduction: little information is available on the antioxidant capacity of the|species Kalanchoe daigremontiana Raym.-Hamet. & H. However, its widespread use in traditional medicine points to its potential as a source of bioactive substances with antioxidant properties.
Objective: evaluate the antioxidant potential of extracts from Kalanchoe daigremontiana leaves and flowers.
Methods: leaf and flower extracts were obtained in acidulated methanol (HCl 10 % v/v), and their antioxidant capacity was gauged by DPPH and ABTS radical cation assay and total anthocyanin content determination.
Results: both leaf and flower extracts displayed promising antioxidant potential (EC50= 4.2-4.4 g extract/mmol DPPH; 1.71-2.05 mmol Trolox/kg extract). Determination was also made of the presence of anthocyanins delphinidin, cyanidin and pelargonidin in the flowers.
Conclusions: Kalanchoe drageimontiana leaves and flowers displayed significant antioxidant capacity, comparable to that of ascorbic acid. The presence of delphinidin-3-O-glucoside, cyanidin-3-O-glucoside and pelargonidin-3-O-glucoside was tentatively identified in the flower extract. Therefore, the study species may be used as a source of bioactive substances for use as additives in the food, cosmetic or pharmaceutical industry.


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