Effects of 1-MCP onthe post-harvest quality of the orange cv. Pera stored under refrigeration

Rosa, Cassia Inês Lourenzi Franco; Clemente, Edmar; Oliveira, Dalany Menezes; Todisco, Katieli Martins; Costa, Jose Maria Correia da

doi:10.5935/1806-6690.20160075

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Food Engineering • Rev. Ciênc. Agron. 47 (4) • Oct-Dec 2016 • https://doi.org/10.5935/1806-6690.20160075 copy

Effects of 1-MCP onthe post-harvest quality of the orange cv. Pera stored under refrigeration

Efeitos da aplicação de 1-MCP na qualidade pós-colheita de laranjas cv. Pera armazenadas sob refrigeração

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The aim of this work was to analyse the effects of 1-MCP upon the post-harvest quality of the orange cv. Pera stored for 45 days at a temperature of 7 ºC. The fruit was divided into four treatments, and then submitted to the application of three concentrations of 1-methylciclopropene (0.1, 0.5 and 1.0µL.L^-1) for a period of 12 hours.The fruitwas again then stored at a temperature of 7 ºC. The rate of respiration was determined, together withcoloration of the epidermis, SS, TA, ratio, vitamin C, total carotenoids, phenolic compounds, total and reducing sugars, weight loss and juice yield. The data were submitted to analysis of variance (F-Test), and the averages were analysed by regression (P≤0.05). According to the results, it could be seen that higher doses of 1-MCP may have caused chemical stress to the orangesunder evaluation, being responsible for the increasein the rate of respiration.Achange in coloration of the epidermis from green to yellow/orange was delayed by the application of 1-MCP; the application of 1-MCP did not cause any alteration to such chemical characteristics as SS, TA, ratio, carotenoids, phenolic compounds or sugars.

Key words:
Citrus sinensis L; Osbeck; Chemical characteristics; Antioxidant compounds; Respiration

Period of Storage	Treatment 1-MCP (µL L^-1)	Rate of Respiration	Epidermis Coloration
Period of Storage	Treatment 1-MCP (µL L^-1)	Rate of Respiration	Colour (Hue)	Chroma
INITIAL	--	31.22 ± 0.779	110.97 ± 0.98	40.02 ± 0.89
15 DAYS	0.0	25.876 ± 2.168*	105.53 ± 0.21*	49.55 ± 0.35*
	0.1	45.139 ± 4.778*	108.98 ± 1.46*	41.29 ± 2.33*
	0.5	67.274 ± 3.500*	109.16 ± 2.02*	40.42 ± 0.89*
	1.0	68.162 ± 5.196*	106.79 ± 0.42*	41.28 ± 2.61*
30 DAYS	0.0	25.876 ± 2.168*	98.27 ± 1.33*	52.65 ± 5.45*
	0.1	45.139 ± 4.778*	108.89 ± 1.66*	43.12 ± 2.55*
	0.5	67.274 ± 3.500*	108.01 ± 2.84*	42.07 ± 2.88*
	1.0	68.162 ± 5.196*	108.05 ± 2.47*	41.66 ± 2.99*
45 DAYS	0.0	52.792 ± 4.216*	90.88 ± 1.07*	62.34 ± 4.03*
	0.1	44.919 ± 1.505*	100.59 ± 2.76*	39.94 ± 3.36*
	0.5	78.489 ± 15.582*	83.64 ± 4.84*	28.89 ± 2.64*
	1.0	79.193 ± 3.435*	82.76 ± 2.88*	28.94 ± 2.94*

Period of Storage	Treatment 1-MCP (µL L^-1)	Analysis
Period of Storage	Treatment 1-MCP (µL L^-1)	SS (°Brix)	TA (mg 100mL^-1)	Ratio	Vitamin C (mg 100mL^-1)
INITIAL	--	9.95 ±0.31	1.06 ±0.09	9.46 ± 0.84	52.41 ±0.29
15 DAYS	0.0	9.70 ± 0.96^NS	0.90 ± 0.02^NS	10.81 ± 0.40^NS	48.89 ± 2.40*
	0.1	9.93 ± 0.33^NS	1.00 ± 0.04^NS	9.90 ± 0.70^NS	70.83 ± 3.19*
	0.5	9.28 ± 0.45^NS	0.90 ± 0.11^NS	10.44 ± 1.32^NS	69.17 ± 2.46*
	1.0	9.55 ± 0.77^NS	0.96 ± 0.07^NS	10.01 ± 0.52^NS	61.67 ± 1.43*
30 DAYS	0.0	9.58 ± 0.73^NS	0.76 ± 0.15^NS	12.93 ± 2.34^NS	40.25 ± 4.99*
	0.1	9.68 ± 0.22^NS	0.93 ± 0.11^NS	10.52 ± 1.22^NS	49.50 ± 3.11*
	0.5	9.48 ± 0.39^NS	0.82 ± 0.15^NS	11.72 ± 1.65^NS	41.50 ± 2.38*
	1.0	9.30 ± 0.32^NS	0.87 ± 0.07^NS	10.74 ± 0.69^NS	42.75 ± 2.50*
45 DAYS	0.0	9.93 ± 0.44^NS	0.84 ± 0.11^NS	11.85 ± 1.07^NS	56.76 ± 5.84^NS
	0.1	9.58 ± 0.31^NS	0.84 ± 0.03^NS	11.36 ± 0.40^NS	50.68 ± 2.81^NS
	0.5	9.30 ± 0.24^NS	0.81 ± 0.15^NS	11.79 ± 2.00^NS	54.39 ± 4.46^NS
	1.0	9.43 ± 0.46^NS	0.99 ± 0.13^NS	9.61 ± 1.10^NS	54.05 ± 2.47^NS

Period of Storage	Treatment 1-MCP (µL L^-1)	Analysis
Period of Storage	Treatment 1-MCP (µL L^-1)	Total Carotenoids (mg 100mL^-1)	Phenolic Compounds (mg 100mL^-1)	Reducing Sugars (g 100mL^-1)	Total Sugars (g 100mL^-1)
INITIAL	--	0.254 ± 0.040	3.542 ±0.714	4.477 ± 0.155	8.083 ±0.56
15 DAYS	0.0	0.374 ± 0.046^NS	3.283 ± 0.393^NS	4.269 ± 0.177^NS	7.893 ± 0.27^NS
	0.1	0.290 ± 0.088^NS	3.617 ± 0.378^NS	4.953 ± 0.286^NS	9.334 ± 0.41^NS
	0.5	0.293 ± 0.040^NS	3.920 ± 0.388^NS	4.697 ± 0.286^NS	8.444 ± 0.63^NS
	1.0	0.322 ± 0.064^NS	3.580 ± 0.435^NS	4.452 ± 0.063^NS	8.896 ± 0.77^NS
30 DAYS	0.0	0.387 ± 0.085^NS	3.712 ± 0.672^NS	4.263 ± 0.409^NS	8.672 ± 0.23^NS
	0.1	0.258 ± 0.053^NS	3.902 ± 0.473^NS	5.287 ± 0.123^NS	8.894 ± 0.36^NS
	0.5	0.320 ± 0.121^NS	3.030 ± 0.584^NS	5.386 ± 0.443^NS	9.970 ± 0.40^NS
	1.0	0.328 ± 0.073^NS	3.561 ± 0.355^NS	5.174 ± 0.176^NS	9.199 ± 0.40^NS
45 DAYS	0.0	0.275 ± 0.094^NS	4.072 ± 0.435^NS	6.071 ± 1.234^NS	8.239 ± 0.37^NS
	0.1	0.252 ± 0.048^NS	3.864 ± 0.705^NS	5.879 ± 0.406^NS	8.911 ± 1.14^NS
	0.5	0.291 ± 0.083^NS	3.883 ± 1.097^NS	5.517 ± 0.082^NS	8.156 ± 0.11^NS
	1.0	0.256 ± 0.087^NS	3.883 ± 0.32^NS	6.291 ± 0.911^NS	9.442 ± 1.57^NS

Period of Storage	Treatment 1-MCP (µL L^-1)	Analysis
Period of Storage	Treatment 1-MCP (µL L^-1)	Weight loss (%)	Juice yield (%)
INITIAL	--	0.00	46.38 ± 2.28^NS
15 DAYS	0.0	2.58 ± 0.17^NS	57.79 ± 1.20^NS
	0.1	2.20 ± 0.05^NS	55.36 ± 2.58^NS
	0.5	1.90 ± 0.81^NS	56.87 ± 1.77^NS
	1.0	2.22 ± 0.14^NS	57.97 ±4 .05^NS
30 DAYS	0.0	4.26 ± 1.23^NS	54.66 ± 3.12^NS
	0.1	4.50 ± 0.13^NS	57.66 ± 2.15^NS
	0.5	4.49 ± 0.17^NS	56.53 ± 2.47^NS
	1.0	4.72 ± 0.49^NS	55.99 ± 2.04^NS
45 DAYS	0.0	6.07 ± 2.91^NS	34.46 ± 7.27^NS
	0.1	6.65 ± 0.56^NS	40.91 ± 4.34^NS
	0.5	7.15 ± 0.47^NS	35.10 ± 5.83^NS
	1.0	6.93 ± 0.74^NS	32.48 ± 5.57^NS

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