Browsing by Autor "Anne Valera"

Now showing 1 - 2 of 2

Calidad fisicoquímica de frutos de guayaba (psidium guajava l.) recubiertos con mucílago de cactus, almacenados
(2019) Anne Valera; Judith Zambrano; Willian José Materano Aldana; Yolexi Ruiz
In this research the effect of an edible coating based on cactus mucilage (Opuntia elatior Miller) on the quality of guava fruits (Psidium guajava L) was evaluated. A total of 300 fruits with physiological maturity, uniform in size and color, free of mechanical damages and / or diseases, were divided into three groups, control, and two formulations of cactus mucilage. For treatments T1 and T2 (10 and 20% w / v), mucilage extracted from cactus cladodes was used. The fruits were immersed in the coatings for 2 min and the control was inmersed in distilled water. They were stored at 10 ± 1°C for 16 days. Four replications by treatment were analyzed, at 4, 8, 12 and 16 days of storage. The following physicochemical parameters were evaluated: color parameters (luminosity, hue and chroma), water content, total soluble solids / acidity (TSS / acidity) and reducing sugars content. The results indicated that the luminosity and chroma were lower in the 20% coated fruits and increased during storage, whereas the hue showed higher values in the treated fruits and decreased during storage. The coated fruits at 20% presented higher values in water content. The statistical analysis showed similar results regarding the treatment factor on the ratio TSS / acidity and the content of reducing sugars. The values of the ratio were increased during the storage and the content of reducing sugars slightly decreased. The results suggest that cactus mucilage could infl uence some quality attributes of guava, delaying ripening during storage.
Caracterización de frutos de caimito (Chrysophyllum Caínito L) variedades verde y morado e influencia de la época de cosecha en la calidad de los frutos
(2013) Judith Esperanza Zambrano Valera; Natalie Montilla; R Guillermo Riveros; I. Quintero; Miguel A. Maffei Valero; Anne Valera; Willian José Materano Aldana
The Caimito (Chrysophyllum cainito L) belongs to the Sapotaceae family. This family includes trees or shrubs widely distributed in the tropics of both hemispheres. In Venezuela is grown primarily in gardens as an ornamental tree and shadow; however, the fruits have exquisite taste and nutritional value for calcium, phosphorus, vitamins A and C. The objective of the study consisted of the chemical evaluation of the fruits of caimito, varieties green and purple, from an experimental garden established on the farm El Reto, University of the Andes, located in Monay, Trujillo State. The variables evaluated were: titratable acidity, total soluble solids (TSS), SST/Acidity ratio, reducing sugars content, dry matter and moisture content. The experimental design corresponded to a factorial with two factors at two levels each (2²): variety (green and purple) and early and late harvest with ten replications arranged at random. The results for all assessments were processed statistically using analysis of variance by means of the statistical package SAS®. Titratable acidity, reducing sugars content and dry matter were higher for the green variety; while TSS and moisture percent were statistically similar. The TSS/acid ratio was higher in the fruits of the purple variety. The harvest time factor had influence on the majority of the chemical variables