Astudillo-Garcés, Victoria E.

Profile Picture

Filters

20171
Reset filters

Settings

Citations

Publication Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    Publication
    Determinación del tiempo de vida útil de naranjas (Citrus sinensis) sin cáscara cubiertas con láminas comestibles almacenadas a 14˚C
    (2017) Astudillo-Garcés, Victoria E.; Plaza-Delestre, María de L.; College of Agricultural Sciences; Orellana Feliciano, Lynette E.; Román Pérez, Félix M.; Department of Food Science and Technology; Zapata, Rocío
    The Citrus Producers Association of Puerto Rico produces peeled oranges. When the shell is removed, it faces the problem of a short shelf life for this product. This research was carried out to evaluate the use of edible film that can be used to extend the shelf life of shelled fresh oranges at 14.0 ± 1.0 ºC. Control samples were evaluated against two treatments: 5 % hydroxypropylmethylcellulose with 2.5 % glycerol and 2 % potassium sorbate (HPMC + SP) and 1 % chitosan in 1% acetic acid and 15 % glycerol. Total counts of aerobic microorganisms and fungi (molds and yeasts) were performed. pH, ºBrix, weight loss, firmness, appearance, color, titratable acidity and vitamin C in fruits were determined. These analyzes were carried out on days 0, 3, 6, 9, 12 and 15 for oranges with edible film. The analysis for the control sample, were conducted on days 0, 1, 3 and 5. In addition, the main sugars and organic acids contained in the Orange juice by High Performance Liquid Chromatography (HPLC). The quantification was performed at the beginning, intermediate and final sampling of each treatment and control. In general, oranges with edible films had a longer shelf life compared to control oranges. No significant differences were found between the oranges coated with the films, in relation to the physicochemical analysis. The oranges coated with chitosan lasted for 12 days while the HPMS + SP coated lasted 15 days, without affecting the physical and chemical properties of oranges. The use of edible films is a suitable alternative to extend the shelf life, thus increasing the marketing opportunity of shelled fresh oranges.