Crescimento, desenvolvimento e teor de flavonoides em calêndula (Calendula officinalis L.)

• Autor(a) principal: Honório, Isabela Cristina Gomes
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/4594
• topic: Plantas medicinais; Calêndula; Flavonoides; Calendula officinalis L.; Medicinal plants; Calendula; Flavonoids; Calendula officinalis L.; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA

The uses of medicinal plants are increasing dramatically among the Brazilian population. Researches involving these plants are also growing, however, most of the information currently available does not meet the minimum required to ensure the efficacy and safety of this therapy. The pharmaco-active compounds studied at this work, flavonoids, in general, are located in the shoots. Are natural pigments present in plants and protect the body from damage by oxidizing agents. The human body is unable to produce flavonoids, and therefore they get it through diet or as supplements. Calendula (Calendula officinalis L.) has in its composition, large amount of flavonoids, the flower being the most used with ornamental purposes, cosmetic and medicinal. The extract of calendula may be used in the production of moisturizing creams and medicine, such as wound healing, antiseptic, sudorific, analgesic, bile duct, anti-inflammatory, antiviral and vasodilator. The harvest season, an important factor in the cultivation of medicinal plants is still uncertain. The aim of this work was to evaluate the best harvest time of marigold flowers seeking greater productivity and higher total content of flavonoids. The experiment was conducted in the greenhouse of the Fitotecnia Department, Federal University of Viçosa (UFV), Viçosa, MG. The experimental design was completely randomized with five treatments and five replications. The treatments were the harvest period: zero, three, six, nine, and twelve days after anthesis (DAA). The height of the plant (mm), stem diameter (mm), number of leaves and total flavonoid content (% - w / w). We performed growth curve of calendula and their behavior in relation to height, diameter and number of leaves over time assessment. The harvest season positively influenced the total content of flavonoids and the average productivity of flowers, and the three DAA was found higher content of flavonoids. The response was heterogeneous among harvest times (0, 3, 6, 9 and 12 days after anthesis) and the average productivity of the flowers and the accumulation of flavonoids. Three days after anthesis obtained the highest yield of flavonoids, so it is advisable to harvest inflorescence is made every three days.