Light spectrum on the quality of fruits of physalis species in subtropical area

Silva, Daniel Fernandes da; Pio, Rafael; Soares, Joyce Dória Rodrigues; Elias, Heloisa Helena de Siqueira; Villa, Fabiola; Vilas Boas, Eduardo Valério de Barros

doi:10.1590/1678-4499.463

Brasil

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Agrometeorology • Bragantia 75 (3) • Jul-Sep 2016 • https://doi.org/10.1590/1678-4499.463 linkcopy

Light spectrum on the quality of fruits of physalis species in subtropical area

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The aim of this study was to analyze the effect of colored-shade nets on the physicochemical characteristics of physalis in subtropical area. The experimental design was the randomized blocks with a 4 × 5 factorial, being four species of physalis (Physalis peruviana, P. pubescens, P. minima and P. ixocarpa) and four net colors (white, blue, red and black), besides the control under full sun. Titratable acidity (TA), pH, vitamin C, soluble solids (SS), SS/TA relation, total phenolics, anthocyanins and antioxidant capacity were evaluated. It was observed that P. peruviana and P. pubescens have more acid fruits, and P. minima shows vitamin C content higher than the other species. In general, fruits of P. peruviana and P. pubescens have better quality when grown in white, blue or black shade net; fruits of P. minima are physicochemically superior when produced under full sun or under white or blue shade net; finally, fruits of P. ixocarpa have low quality when produced under black net.

Key words Physalis L.; postharvest quality; bioactive compound; antioxidant activity

Species	TA	pH	Vitamin c
P. peruviana	1.76 a	4.06 b	31.51b
P. pubescens	1.43 a	4.14 b	31.17 b
P. minima	0.85 b	4.23 a	61.77 a
P. ixocarpa	0.73 b	4.37 a	26.55 b
CV (%)	10.65	5.97	21.95

Net coloration		P. peruviana	P. pubescens		P. minima	P. ixocarpa
Net coloration	SS content
Full sun		8.00 Bb	6.67 Bb		10.11 Aa	7.01 Ab
White		9.33 Aa	8.33 Ba		10.95 Aa	4.67 Ab
Blue		11.00 Aa	10.00 Aa		10.35 Aa	5.69 Ab
Red		733 Bb	9.67 Aa		10.15 Aa	6.91 Ab
Black		9.67 Aa	9.67 Aa		9.50 Aa	6.50 Ab
CV (%)				14.74
Net coloration		*P. peruviana*	*P. pubescens*		*P. minima*	*P. ixocarpa*
Net coloration	Ratio (relation SS/TA)
Full sun		6.15 Ac	5.99 Ac		14.61 Aa	9.24 Ab
White		5.67 Ab	6.32 Ab		13.09 Aa	781 Ab
Blue		5.20 Ab	6.73 Ab		13.02 Aa	7.07 Ab
Red		5.74 Ac	5.84 Ac		11.77 Aa	9.10 Ab
Black		5.12 Ab	7.63 Aa		8.99 Ba	9.52 Aa
CV (%)				18.99
Net coloration		*P. peruviana*	*P. pubescens*		*P. minima*	*P. ixocarpa*
Net coloration	Monomeric anthocyanins content (mg pelar-3-gluc∙100 g^-1)
Full sun		1.00 Ab	1.25 Ab		1.00 Ab	7.60 Aa
White		1.00 Ab	1.00 Ab		1.00 Ab	2.96 Ba
Blue		1.00 Ab	1.00 Ab		1.82 Ab	4.83 Ba
Red		1.00 Ab	1.76 Ab		1.00 Ab	6.64 Aa
Black		1.00 Ab	1.00 Ab		1.00 Ab	3.91 Ba
CV (%)				41.47
Net coloration		*P. peruviana*	*P. pubescens*		*P. minima*	*P. ixocarpa*
Net coloration	Antioxidant activity (DPPH, %)
Full sun		8.96 Aa	3.36 Bb		5.32 Ab	5.92 Ab
White		5.47 Ba	5.37 Aa		5.00 Aa	5.91 Aa
Blue		2.55 Bb	2.97 Bb		4.90 Aa	5.09 Aa
Red		4.32 Ba	5.94 Aa		5.69 Aa	3.61 Ba
Black		5.44 Ba	5.41 Ab		3.19 Ab	3.09 Bb
CV (%)				29.89

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Instituto Agronômico de Campinas Avenida Barão de Itapura, 1481, 13020-902, Tel.: +55 19 2137-0653, Fax: +55 19 2137-0666 - Campinas - SP - Brazil
E-mail: bragantia@iac.sp.gov.br

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[1] Averages followed by the same letter in the column do not differ from one another by the Scott-Knott test at a 5% probability. TA = Titratable acidity; CV = Coefficient of variation.

Species		Total phenolics (mg EAG-100 g^-1)
P. peruviana		93.57 b
P. pubescens		112.37 a
P. minima		52.99 d
P. ixocarpa		78.91 c
CV (%)		20.93
Net colorations		Total phenolics (mg EAG-100 g^-1)
Full sun		80.86 a
White		85.98 a
Blue		83.38 a
Red		70.23 b
Black		85.79 a
CV (%)		20.93