Record Details

EFFECT OF MODIFIED ATMOSPHERE PACKAGING ON QUALITY AND SHELF LIFE OF TOMATOES

KrishiKosh

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Field Value
 
Title EFFECT OF MODIFIED ATMOSPHERE PACKAGING ON QUALITY AND SHELF LIFE OF TOMATOES
 
Creator NADELLA VINODA
 
Contributor MADHAVA, M
 
Subject EFFECT, MODIFIED, ATMOSPHERE, PACKAGING, QUALITY, SHELF, TOMATOES
 
Description Tomato (Lycopersicum esculentum) is one of the most popular and widely grown
vegetables throughout the world and is known for excellent nutritive, medicinal and food
values. But the poor shelf life of tomato is one drawback. The estimated overall post
harvest distribution system losses in tomato varied from 19.4 to 26.9 %, including 10.1 %
loss at farm level.
Extending the shelf life of tomatoes is very important for domestic and export
marketing. Modified atmosphere packaging is well established technology, which along
with low temperature storage helps in extending the shelf life and maintenance of the
quality of perishable. The tomatoes were packed under modified atmosphere packaging
in different packaging materials such as low density poly ethylene (LDPE),
polypropylene (PP) and poly vinyl chloride (PVC) covers having a thickness of 250
gauge (63.5 micron) compared with unwrapped tomatoes. The compositions of gases in
the covers were 3 % O2, 9 %CO2 and 88 % N2 at the time of packing. And these packed tomatoes were kept at low temperatures such as at 15 oC, 20 oC and at room
temperature. The samples were taken for every three days and their physical, chemical
and sensory characteristics are determined. The changes in oxygen and carbon dioxide
concentrations in tomato packed covers were measured for every three days.
The shelf life of 45 days was observed when the tomatoes packed in
LDPE, PP and PVC covers and stored at 15 oC temperatures where as the shelf life of
36 days, 27 days was observed when the packed tomatoes stored at 20 oC and at room
temperature. The shelf life of unwrapped tomatoes stored at room temperature was only 6
days. The quality of tomatoes was good when tomatoes packed in LDPE covers compared
to PP, PVC covers. The weight losses of tomatoes were very less of 1 % in LDPE covers
kept at 15 oC temperature. The reduction in moisture content was very less in MAP
packed tomatoes and it was observed very less in LDPE(94.47 %) covers compared to
PP(93.69 %) and PVC(93.7 %) covers stored at 15 oC . The reduction in moisture
content was also very less at 15 oC temperature compared to 20oC and at room
temperature. The lycopene content was increased from 1.248 to 3.619 mg/100 g in LDPE
covers stored at 15 oC which is very less compared to PP and PVC covers. The ascorbic
acid content of tomatoes is highest in LDPE covers kept at 15 oC temperature. The
increase of TSS and pH of tomatoes was less in LDPE covers. The changes in shrinkage
and texture were less in tomatoes packed under LDPE covers and stored at 15 oC
temperature. Finally it was concluded the tomatoes packed in LDPE covers under
modified atmosphere packaging and stored at 15 oC temperature gives a shelf life 45
days with a good quality of tomatoes.
 
Date 2016-08-20T13:38:48Z
2016-08-20T13:38:48Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/73156
 
Language en
 
Relation D8632;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD