Application of different coating treatments to enhance storability and fruit quality of pomegranate (<i>Punica granatum</i> L., cv. Wonderful) during prolonged storage

Khedr, Emad Hamdy

doi:10.1590/0100-29452022855

Acessibilidade / Reportar erro

Brasil

Revista Brasileira de Fruticultura

Español English

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Harvest and postharvest • Rev. Bras. Frutic. 44 (2) • 2022 • https://doi.org/10.1590/0100-29452022855 copy

Application of different coating treatments to enhance storability and fruit quality of pomegranate (Punica granatum L., cv. Wonderful) during prolonged storage

Aplicação de diferentes tratamentos de revestimento para melhorar a capacidade de armazenamento e a qualidade do fruto da romã (Punica granatum L., cv. Wonderful) durante o armazenamento prolongado

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

This study was carried out on pomegranate fruits cv. “Wonderful” with the aim of maintaining fruit quality and water content, reducing weight loss, chilling injury and browning symptoms during cold storage at 5 °C and 90% RH for 60 d followed by simulated shelf life at 20 °C for 14 d. Coating treatments included gum arabic at 5% and 10%, paraffin at 10% and 20%, chitosan at 1% and 2%, and beeswax at 5% and 10%. All conducted coatings treatments significantly maintained fruit quality as compared to the control (uncoated ones). Chitosan at 2% significantly preserved fruit quality, firmness, visual appearance, husk colour, ascorbic acid and anthocyanin content, furthermore it reduced browning, peroxidase enzyme activity and decay incidence. Paraffin at 10% and beeswax at 10% were effective in maintaining fruit water content, in addition to the significant preservation of husk distention using paraffin at 20%, moreover, application of gum arabic at 5% maintained moderate rates of fruit respiration and total soluble solids content as compared to control.

Index terms
pomegranate; beeswax; gum arabic; chitosan; coating; paraffin; storage; chilling injury

Sociedade Brasileira de Fruticultura Via de acesso Prof. Paulo Donato Castellane, s/n , 14884-900 Jaboticabal SP Brazil, Tel.: +55 16 3209-7188/3209-7609 - Jaboticabal - SP - Brazil
E-mail: rbf@fcav.unesp.br

Acompanhe os números deste periódico no seu leitor de RSS

[TFN0101] ^*
Means with the different letters are significantly different according to LSD range test (a?0.05).

Treatment	Decay percentage	Weight Loss percentage	Firmness	Husk Integrity	General Appearance	L value for husk
	During 60 d of storage at 5 °C
Beeswax at 5%	3.16 bcd	4.46 c	37.75 a	5.28 d	8.38 bc	49.14 abc
Beeswax at 10%	2.11 cd	4.24 c	37.97 a	5.32 c	8.47 b	49.32 abc
Chitosan at 1%	1.05 d	5.59 ab	38.11 a	5.34 bc	8.83 a	49.40 ab
Chitosan at 2%	1.05 d	4.14 c	38.03 a	5.37 ab	8.87 a	49.54 a
Paraffin at 10%	4.22 bc	3.29 d	37.65 a	5.39 a	8.16 cd	48.61 de
Paraffin at 20%	5.27 b	3.96 cd	37.58 a	5.40 a	8.03 d	48.25 e
Gum arabic at 5%	2.65 bcd	5.27 b	37.87 a	5.25 de	8.83 a	49.03 bcd
Gum arabic at 10%	1.60 cd	5.34 b	37.93 a	5.22 e	8.74 a	48.93 cd
Control	7.55 a	6.31 a	35.80 b	5.16 f	7.40 e	46.44 f
	During 14 d of shelf life at 20 °C
Beeswax at 5%	8.69 bc	4.96 bc	29.81 a	4.77 d	6.72 b	42.30 c
Beeswax at 10%	7.60 bc	4.09 c	30.15 a	4.96 c	6.72 b	42.45 bc
Chitosan at 1%	4.89 c	5.84 c	30.29 a	5.03 c	7.98 a	42.62 ab
Chitosan at 2%	4.35 c	4.39 c	30.27 a	5.13 b	8.20 a	42.79 a
Paraffin at 10%	9.77 b	4.18 c	28.92 b	5.17 ab	6.06 c	40.62 e
Paraffin at 20%	10.86 b	4.32 c	28.53 b	5.20 a	5.83 c	40.38 e
Gum arabic at 5%	7.06 bc	4.13 c	29.99 a	4.74 d	7.16 b	41.88 d
Gum arabic at 10%	7.06 bc	4.31 c	30.06 a	4.66 e	6.80 b	41.82 d
Control	17.92 a	6.69 a	25.69 c	4.48 f	4.06 d	37.17 f

Treatment	Respiration Rate	TSS (%)	Browning index	Peroxides activity	Ascorbic acid (mg/ 100g FW)	Anthocyanin (mg/ 100g FW)
	During 60 d of storage at 5 °C
Beeswax at 5%	7.30 b	17.09 bc	0.49 c	0.351 c	11.23 cd	13.82 bc
Beeswax at 10%	7.21 b	17.07 c	0.41 c	0.356 c	11.22 de	13.80 cd
Chitosan at 1%	7.15 b	17.11 abc	0.00 d	0.295 e	11.32 ab	13.86 ab
Chitosan at 2%	7.18 b	17.12 abc	0.00 d	0.295 e	11.33 a	13.88 a
Paraffin at 10%	7.34 b	17.10 bc	1.16 b	0.482 b	11.20 de	13.77 de
Paraffin at 20%	7.34 b	17.10 bc	1.24 b	0.505 b	11.19 e	13.74 ef
Gum arabic at 5%	7.12 b	17.16 a	0.08 d	0.326 d	11.26 c	13.84 bc
Gum arabic at 10%	7.31 b	17.14 ab	0.25 cd	0.323 d	11.30 b	13.82 bc
Control	7.72 a	16.99 d	2.90 a	0.780 a	11.14 f	13.72 f
	During 14 d of shelf life at 20 °C
Beeswax at 5%	10.76 bc	17.26 e	5.66 c	0.645 d	10.04 d	11.16 cd
Beeswax at 10%	10.68 c	17.17 f	5.39 c	0.683 c	10.01 de	11.14 de
Chitosan at 1%	10.24 d	17.37 bcd	2.90 e	0.530 e	10.14 ab	11.22 ab
Chitosan at 2%	10.30 d	17.39 abc	2.63 e	0.516 e	10.17 a	11.25 a
Paraffin at 10%	10.69 c	17.35 cd	6.91 b	0.909 b	10.00 e	11.11 ef
Paraffin at 20%	10.94 b	17.31 de	7.06 b	0.915 b	9.99 e	11.09 f
Gum arabic at 5%	10.13 d	17.45 a	3.87 d	0.614 d	10.08 c	11.19 bc
Gum arabic at 10%	10.88 bc	17.43 ab	4.98 c	0.624 d	10.12 b	11.19 b
Control	11.62 a	15.60 g	9.96 a	1.077 a	9.78 f	10.85 g