Edible film based on candelilla wax to improve the shelf life and quality of avocado

Abstract

a b s t r a c tIn this study the effect of addition of ellagic acid (at three different concentrations) into candelilla wax matrix on shelf life and quality of whole avocados was studied. Control treatments were avocados coated with candelilla wax without ellagic acid and avocados without coating. The fruits were chosen for their maturity, size, free from infection and physical defects. All those samples were inoculated with a concentrated suspension of spores of Colletotrichum gloeosporioides, the main phytopathogenic fungus for avocados. Experiments were carried out completely divided into randomized groups. Changes in appearance, solids content, pH, a w , lightness (L * value) and weight loss were monitored during 6 weeks every 8 days. A sensory evaluation of avocados coated with the best edible film was also performed. Edibel films were able to reduce significantly the damage caused by C. gloeosporioides, reducing also significantly the change in appearance and weight loss in the fruits. Use of ellagic acid as part of the edible film has an important effect to improve the quality and shelf life of avocado. With this work we found that using this new protection system the negative effects of C. gloeosporioides can be successfully reduced.

Edible candelilla wax coating with fermented extract of tarbush improves the shelf life and quality of apples

“…This has led to development of natural technologies for food conservation. In recent years, research has focusing on search of naturally occurring substances capable of acting as alternative antimicrobials and antioxidants in minimally processed fruits and vegetables (Saucedo-Pompa et al, 2009), in order to reduce the negative effects of maturation process, improving quality of Tarbush (Flourensia cernua) plant is widely distributed in the semiarid region of Northern Mexico and Southern United States of Amerca, which is currently only used empirically for infusions preparation to treat some diseases or ailments for the rural population in Mexico, particularly (Belmares, Garza, Rodríuez, Contreras-Esquivel, & Aguilar, 2009). Tarbush extracts or constituents have reported to possess antioxidant (Abou-Gazar, Bedir, Takamatsu, Ferreira, & Khan, 2004), anti-HIV (Gnabre, Ito, Ma, & Huang, 1996), antimicrobial, enzyme inhibitory, antitumor (MacRae & Towers, 1984), and antihyperglycemic (Luo et al, 1998) activities.…”

Uso combinado de 1-Meticiclopropeno y emulsiones de cera en la conservación de guanábana (Annona muricata)

“…Esto es porque se conoce que la temperatura de refrigeración disminuye la transpiración de frutas al disminuir su respiración, así mismo se sabe que puede ocurrir una mayor reducción de la pérdida de agua de frutos con la aplicación de recubrimientos en los mismos (SAUCEDO et al, 2009).…”

Extractos de hojas de morera (Morus alba) como una alternativa de control del moho azul en frutos de manzana en postcosecha

“…Varios fungicidas se han asociado a la causa de un gran número de enfermedades que afectan la salud humana tales como cáncer, daños reproductivos y disrupción endócrina (Baldi et al, 2001). Debido al conocimiento de esta información los consumidores son más conscientes de su alimentación y demandan productos más saludables, mínimamen-te procesados, y sin residuos químicos o que hayan sido tratados con productos alternativos a los productos sintéticos (Saucedo et al, 2009, Volk et al, 2015. Uno de los principales patógenos que afectan a la manzana en postcosecha es Penicillium expansum, conocido comúnmente como moho azul.…”

“…La morera (M. alba) ha sido aprovechada en medicina humana para controlar patógenos fúngicos y bacterianos, y su composición química ha sido estudiada ampliamente (Park et al, 2003;Omidiran et al, 2012). Al respecto, Park et al (2003) encontraron que un compuesto conocido como kuwanon extraído de raíces more aware of their nutrition and demand healthier products, processed at a minimum, and without chemical residues, or treated with products that are not synthetic (Saucedo et al, 2009, Volk et al, 2015. One of the main pathigens that affect apples in postharvest is Penicillium expansum, commonly known as the blue mold.…”