Optimization of gum arabic and starch-based edible coatings with lemongrass oil using response surface methodology for improving postharvest quality of whole “wonderful” pomegranate fruit
Date
2021-04-12
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
The effects of edible coatings based on gum arabic (GA) (0.5–1.5%), maize starch (MS)
(0.5–1.5%), lemongrass oil (LO) (2–4%), and glycerol (GC) (0.5–1%) developed using response surface
methodology (RSM) on “Wonderful” pomegranate fruit were studied. After 42 days of storage
(5 1 C, 95 2% RH) and 5 days at ambient temperature (20 0.2 C and 60 10% RH), whole
fruit were evaluated for weight loss (%) and pomegranate juice (PJ) for total soluble solids ( Brix),
titratable acidity (% Citric acid), and antioxidant capacity. The optimization procedure was done
using RSM and the response variables were mainly influenced by the concentrations of MS and GA.
The optimized coating consisted of GA (0.5%), MS (0.5%), LO (3%), and GC (1.5%) with desirability
of 0.614 (0—minimum and 1—maximum). The predicted values of response variables, for the coating
were weight loss (%) = 5.51, TSS ( Brix) = 16.45, TA (% Citric acid) = 1.50, and antioxidant capacity
(RSA = 58.13 mM AAE/mL PJ and FRAP = 40.03 mM TE/mL PJ). Therefore, the optimized coating
formulation is a potential postharvest treatment for “Wonderful” pomegranate to inhibit weight loss
and maintain overall quality during storage and shelf-life.
Description
Kawhena, T.G.; Opara, U.L.; Fawole, O.A. Optimization of
Gum Arabic and Starch-Based Edible Coatings with Lemongrass Oil Using Response Surface Methodology for
Improving Postharvest Quality of Whole “Wonderful” Pomegranate Fruit. Coatings 2021, 11, 442.
doi.10.3390/coatings11040442
The original publication is available at: mdpi.com
The original publication is available at: mdpi.com
Keywords
Antioxidant, Formulation, Pomegranate -- Effect of temperature on, Pomegranate fruit -- Quality, Pomegranate -- Postharvest technology, Edible coatings, Gum Arabic, Lemongrass oil
Citation
Kawhena, T.G.; Opara, U.L.; Fawole, O.A. Optimization of Gum Arabic and Starch-Based Edible Coatings with Lemongrass Oil Using Response Surface Methodology for Improving Postharvest Quality of Whole “Wonderful” Pomegranate Fruit. Coatings 2021, 11, 442.
doi.10.3390/coatings11040442