EFFECT OF POSTHARVEST MANAGEMENT ON SHELF LIFE AND QUALITY OF GUAVA
Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
DEPARTMENT OF HORTICULTURE
Abstract
The experiment was carried out in the Postharvest Laboratory of Sher-e-Bangla
Agricultural University, Dhaka during the period of January 2019 to June 2019
to find out the effect of different postharvest management practices of guava to
increase shelf life and quality in ambient condition. Two factor experiment viz.
Factor A: P
0
(no packaging) and P
viii
1
(perforated polythene) and Factor B: T
(no
preservatives), T
1
(Propolis 5%), T
2
(Chitosan 1%), T
3
(Gum Arabic 5%), T
(Propolis 5% + Gum arabic 5%), T
5
(Propolis 5% + Chitosan 1%), T
(Cinnamon oil 2%), T
7
(Lemongrass oil 2%) and T
(Cinnamon oil 2% +
Lemongrass oil 2%) were initiated for the experiment. The experiment was laid
out in completely randomized design (CRD) with three replications. Various
data on physical and chemical properties were collected. In case of the effect of
packaging material, P
1
8
(perforated polythene) showed best performance and
showed the highest shelf life (9.78 days) compared to P
(no packaging) (7.89
days). Regarding preservatives, T
1
0
(Propolis 5%) gave the best results on
studied parameters and showed highest shelf life (12 days) compared to other
treatments and shortest shelf life was recorded from T
(5.5 days). In case of
combined effect of packaging materials and preservatives, at 12 days after
storage (DAS), the lowest percent weight loss (6.46%) and percent dry matter
content (14.63%) were found from P
1
T
1
0
whereas the highest weight loss
(10.23%) and dry matter content (21.08%) was found in P
0
T
. Similarly, the
highest percent moisture content (85.37%), percent titratable acidity (2.23%),
vitamin C content (196.60 mg/100g), percent total soluble solid (7.76%),
firmness (4.30 kg/cm
2
0
) and percent total sugar content (9.17%) were also found
from the treatment combination of P
1
T
1
at 12 DAS whereas P
showed the
lowest results (78.92%, 0.701%, 144.4mg/100g, 5.16%, 2.10 kg/cm
, 5.361%,
respectively) on the respected parameters. Likewise, the highest shelf life
(13.00 days) was also recorded from P
1
T
whereas the lowest (5.00 days) was
from P
0
T
0
. So, the treatment combination of P
1
1
T
can be considered the best
postharvest treatment for guava.
Description
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE
IN
HORTICULTURE
Keywords
POSTHARVEST MANAGEMENT, SHELF LIFE AND QUALITY OF GUAVA