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Please use this identifier to cite or link to this item:
http://hdl.handle.net/10174/37166
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Title: | Effectiveness of Sodium Alginate and Carnauba Wax Nanoemulsions with Lemongrass Essential Oil on the quality of ‘Hass’ Avocado Fruit from early, middle, and late harvest season during prolonged cold storage |
Authors: | Gago, Custódia Gerreiro, Adriana Souza, Mariana Martins, Nuno Fonseca, Daniela Cabrita, Maria João Miguel, Maria da Graça Antunes, Maria Dulce |
Keywords: | Gray pulp Electrolyte leakage Hydroperoxide Malondialdehyde Coatings |
Issue Date: | 2024 |
Publisher: | Elsevier |
Abstract: | Avocado (Persea Americana Mill.) has gained popularity as a widely produced and consumed fruit worldwide,
raising concerns about its storage and transportation. The avocado, being a climacteric fruit sensitive to chilling
injury, faces challenges that affect its shelf life and commercial viability. This research delves into the effectiveness
of edible sodium alginate 2 % (weight/weight, w/w) (SA) and carnauba wax 1 % (w/w) (CW) coatings,
both independently and in combination with lemongrass essential oil, sodium alginate 2 % (w/w) + lemongrass
essential oil 1.25 % (SALG) and carnauba wax 1 % + lemongrass essential oil 1.25 % (w/w) CWLG) as postharvest
treatments. Uncoated avocados were used as control (CT). The nanocoating-treatments aim to preserve
the quality of ’Hass’ avocados harvested during the early, middle, and late season. After treating the fruits, some
from each treatment group were kept at 21 ± 1 ºC for 7 days (shelf life). The rest were stored at 5 ºC and 90 % RH
for 15, 30, and 45 days before being submitted also to shelf life. In each sampling date, quality parameters
measured included: firmness, color (L*, hue), weight loss, gray pulp symptoms, ethylene production and pulp
electrolyte leakage. Also, fatty acids (FA), hydrogen peroxide (H2O2), malondialdehyde (MDA), α-farnesene
(Farn) and conjugated trienols (Ctrols) were quantified in avocado pulp. Fruit quality analysis showed that all
coatings improve quality and reduction of gray pulp development, especially CW and the incorporation of
lemongrass in both matrices. Therefore, these edible coatings can be an alternative to improve preservation of
avocado fruit quality through cold storage and subsequent shelf-life, which potentially reduce fruit waste. |
URI: | http://hdl.handle.net/10174/37166 |
Type: | article |
Appears in Collections: | MED - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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