FREIRE, M. S.; http://lattes.cnpq.br/7113701645808557; FREIRE, Maciel dos Santos.
Abstract:
The use of inadequate packaging cause injuries in fruits and these serve as inside for
pathogens also cause devaluation of quality fruit leading to post-harvest fosses.
Therefore, this study aimed to evaluate the incidence of fungi and quality of guava
'Paluma' with impact injury and packaged in two types of boxes for transport. The fruits
were harvested in orchard farming Farm Mocó, Aparecida - PB at the maturity stage
"once" and taken to the packing shed of the farm to the treatments. The fruits were
submitted to impact through the drop height of 85 cm under industrial floor. They were
then packed in boxes, constituting the following treatments: TI, fruits submitted to
impact, in a plastic box packaging polyethylene, T2, fruits submitted to impact, packing
in cardboard, T3. fruits without impact on packaging plastic box for polyethylene, T4,
fruits without impact, packing in cardboard, T5, fruits without mechanical injury. Later
they were transported for 45 km, to the Centro de Ciências e Tecnologia Agroalimenta
(CCTA) with a percurse in highway and dirt road. Analyses were performed in the
Laboratory of Plant Pathology and Food Analysis of CCTA. The experimental design
was completely randomized with four replications and two fruits per repetition. To
confirm the identity and frequency of fungar pathogens, small pieces of fruit were plated
on PDA and incubated for seven days at 28 ' C, with a photoperiod of 12 hours, and
subsequent identification. The physico-chemical analyzes were performed 24 hours
after the fruits harvest. The data were analyzed statistically by ANOVA and mean
comparison (Tukey) at 5% probability. Were identified the following fungo: 4/fernar7a
sp, Aspergillus flavus, Aspergillus niger, Colletotrichum sp, Curvularia sp,
Cladosporium sp, Nigrospora sp, sp Penícillinum, Pestalotiopsis sp and Rhizopus sp.
The results of disease severity and average number of lesions per fruit showed that
the TI differs significantly from the others. Treatments TI and T2 had a higher incidence
of rot fruits. The highest occurrence of fungi was verify in treatments with plastic box
packaging (TI and T3) with values superiors to treatments that used packing in
cardboard (T2, T4 and Ts, showing that the plastic box favors fungal incidence. For
physic-chemical analyzes the impacts associated with transporting the fruits in different
packaging did not affect fruit quality after 24 hours of harvest.