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Effects of ozone exposure on ‘Golden’ papaya fruit by photoacoustic phase-resolved method: Physiological changes associated with carbon dioxide and ethylene emission rates during ripening
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10.1063/1.3592353
/content/aip/journal/jap/109/11/10.1063/1.3592353
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/11/10.1063/1.3592353
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Figures

Image of FIG. 1.
FIG. 1.

PRM applied to the spectra obtained from a control sample after 24 h exposure in pure air. (a) In-phase signal S0; (b) quadrature signal S90; (c) pigments spectrum resolved at ϕ =− 40°; (d) cuticle signal resolved at ϕ = 90°; and (e) cuticle signal at phase ϕA = 50° and pigments signal at phase ϕB = 0°, resulting in a phase difference of ψ = 50°.

Image of FIG. 2.
FIG. 2.

PRM applied to the spectra obtained from sample 120 h after the treatment (6 ppmv ozone for 24 h). (a) In-phase signal S0; (b) quadrature signal S90; (c) spectrum of carotenoids resolved at ϕ =− 45°; (d) cuticle signal resolved at ϕ = 120°; and (e) cuticle signal at phase ϕA = 45° and pigments signal at phase ϕB = 30°, resulting in a phase difference of ψ = 15°.

Image of FIG. 3.
FIG. 3.

Time dependence of the PA spectra taken from the skin of control papaya fruit.

Image of FIG. 4.
FIG. 4.

Time dependence of the PA spectra taken from the skin of ozone fumigated papaya fruit.

Image of FIG. 5.
FIG. 5.

(a) CO2 and (b) ethylene emission rates from ozone treated (open circles) and control group (open squares) papaya fruit.

Image of FIG. 6.
FIG. 6.

(a) Fluorescence yield (F0); (b) maximum fluorescence (Fm), (c) variable fluorescence (Fv); and (d) maximum quantum efficiency (Fv/Fm) of PSII photochemistry for ozone treated (open circles) and control (open squares) papaya fruit.

Image of FIG. 7.
FIG. 7.

CIELAB color space. (a) a*; (b) b*; (c) L*; and (d) hue angle for ozone fumigated (open circles) and control (open squares) papaya fruit.

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/content/aip/journal/jap/109/11/10.1063/1.3592353
2011-06-06
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of ozone exposure on ‘Golden’ papaya fruit by photoacoustic phase-resolved method: Physiological changes associated with carbon dioxide and ethylene emission rates during ripening
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/11/10.1063/1.3592353
10.1063/1.3592353
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