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Thiabendazole uptake and storage performance of cactus pear [Opuntia ficus-indica (L.) Mill. Cv Gialla] fruit following postharvest treatments with reduced doses of fungicide at 520C (Articolo in rivista)
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- Thiabendazole uptake and storage performance of cactus pear [Opuntia ficus-indica (L.) Mill. Cv Gialla] fruit following postharvest treatments with reduced doses of fungicide at 520C (Articolo in rivista) (literal)
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- 2002-01-01T00:00:00+01:00 (literal)
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Schirra M., Brandolini V., Cabras P., Angioni A., Inglese P. (2002)
Thiabendazole uptake and storage performance of cactus pear [Opuntia ficus-indica (L.) Mill. Cv Gialla] fruit following postharvest treatments with reduced doses of fungicide at 520C
in Journal of agricultural and food chemistry
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- Schirra M., Brandolini V., Cabras P., Angioni A., Inglese P. (literal)
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- Titolo
- Thiabendazole uptake and storage performance of cactus pear [Opuntia ficus-indica (L.) Mill. Cv Gialla] fruit following postharvest treatments with reduced doses of fungicide at 520C (literal)
- Abstract
- The storage response of cactus pears [Opuntia ficus-indica Miller (L.)
cv. Gialla] was investigated over 6 weeks at 6°C, plus an additional week
of simulated marketing period (SMP) at 20°C, after 3 min dip treatment
with thiabendazole (TBZ) at 1000 mg/L at 20°C or 150 mg/L TBZ at 52°C;
untreated fruits were used as control. Following TBZ treatments at 20 and
52°C, total residues were recovered from the peel of cactus pear as the
concentration of residues in the pulp was negligible. Treatments with
1000 mg/L TBZ at 20°C resulted in a 2.82 mg/kg residue uptake (active
ingredient, whole-fruit basis) while treatment at 150 mg/L TBZ left 1.09
mg/kg. TBZ showed great persistence over both storage and SMP: on
average, in the fruits treated at 20 and 52°C over 72% and 68% of it was
still present after SMP.
Postharvest treatments with 1000 mg/L TBZ at room temperature did not
affect the expression of slight-to-moderate chilling injury (CI) but
reduced severe CI by approximately 50% and decay development by 63.4% in
comparison to untreated fruit after SMP. The effectiveness of TBZ was
much higher with the treatment at 150 mg/L TBZ at 52°C, providing 91%
control of severe CI and approximately 89 % suppression of decay; no
treatment damage occurred during storage and SMP. External appearance was
better in fruit treated with 150 mg/L TBZ at 52°C. Respiration rate,
titratable acidity, soluble solids concentration and acetaldehyde in the
flesh were not significantly influenced by treatments. Ethylene
production rate and ethanol levels in the flesh were significantly higher
in the TBZ-treated fruit as opposed to untreated control.
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