Abstract:
The experiment was carried out in the Postharvest Laboratory of Sher-e-Bangla
Agricultural University, Dhaka to find out the effect of different postharvest treatments
on shelf life and quality of guava. The experiment comprised two factors viz. Factor A:
T
0
= No postharvest treatments, T
1
= Hot water (45
0
c for 5 minutes), T
2
= CaCl
2
(4%) and
T
3
= 1-MCP (250 ppb) and Factor B: P
0
= No packaging material, P
1
= Perforated
polythene bag and P
2
= Newspaper were used in this experiment. The experiment was
laid out in completely randomized design (CRD) with five replications. Various physical
and chemical parameters were recorded during the experiment. In case of packaging
material, the highest shelf life (10.92 days) were observed in P
1
(Perforated polythene)
the lowest was recorded in P
0
(no packaging) (7.25 days). Regarding postharvest
treatments, T
3
(1-MCP treated fruits) gave the best results on studied parameters and
showed highest shelf life (11.00 days) compared to other treatments and shortest shelf life
(6.67 days) was recorded from T
0
(no postharvest treatments). In combined application of
postharvest treatments and packaging materials, the highest percent dry matter content
(22.99%), total soluble solid (8.90%), percent total sugar (9.06%), percent reducing sugar
(6.05%), percent titratable acidity (2.12%), non-reducing sugar (3.01%) and vitamin C
(195.17 mg/100g) were found from the treatment combination of T
3
P
1
whereas T
0
P
0
showed the lowest results. Likewise, the highest shelf life (12.67 days) was also recorded
from T
3
P
1
whereas the lowest (5.33 days) was found in T
0
P
0
. Therefore, T
3
P
1
is
considered to be the most effective postharvest treatment for extending shelf life and
quality of guava.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
In partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
HORTICULTURE
