STUDIES ON ZEOLITE-LDPE COMPOSITE BAGS TO EXTEND SHELF LIFE OF GRAPES

Simple item page
dc.contributor.advisorS. L., JAGADEESH
dc.contributor.authorY. G., DARSHAN
dc.contributor.otherAWATI, MALLIKARJUN G.
dc.contributor.otherD. L., RUDRESH
dc.contributor.otherJHALEGAR, MD. JAMEEL.
dc.contributor.otherNANJAPPANAVAR, ANAND .
dc.date.accessioned2023-07-13T07:26:32Z
dc.date.available2023-07-13T07:26:32Z
dc.date.issued2021-01
dc.description.abstractAn experiment entitled “Studies on zeolite-LDPE composite bags to extend shelf life of grapes” was carried out at the Department of Post Harvest Technology, College of Horticulture, Bagalkote, Karnataka during the year 2019-20. The objective was to find the effective packaging material for increasing the shelf life of table grapes. In this experiment, thirteen packaging treatments viz., control polybag (T1), control polybag + CFB (T2), zeolite-polybag (T3), zeolite-polybag + CFB (T4), zeolitesilver-polybag (T5), zeolite-silver-polybag + CFB (T6), zeolite-chlorine-polybag (T7), zeolite-chlorine-polybag + CFB (T8), zeolite biodegradable bag (T9), zeolite biodegradable bag + CFB (T10), CFB (T11), CFB + grape guard (T12) and punnet box (T13) were used to study their effectiveness in prolonging shelf life of table grapes cv. Thompson Seedless both under ambient (32±1˚C) and refrigerated (5±1˚C) conditions. Under ambient storage, grape bunches packed in T8 (zeolite-chlorine- polybag + CFB) recorded minimum physiological loss in weight (8.92 %), berry drop (1.36 %), TSS (16.08 ºB), tiratable acidity (0.72 %), TSS to acid ratio (21.94), maximum berry firmness value (91.05 N), highest sensory score for colour and appearance (7.86), texture (7.90), taste (7.91), flavour (7.94), overall acceptability (7.90), freshness of rachis (6.61) ease of detachment of berry (2.42) and minimum disease score (0.31) at 8 DAS. In refrigerated storage at 5±1ºC and 85-90 % RH), grape bunches packed in T8 (zeolite-chlorine-polybag + CFB) showed minimum physiological loss in weight (2.25 %), berry drop (1.08 %), TSS (15.58 ºB), tiratable acidity (0.60 %), maximum berry firmness value (84.01 N), highest sensory score for colour and appearance (8.31), texture (8.06), taste (8.00), flavour (8.03), overall acceptability (8.06), freshness of rachis (8.39), ease of detachment of berry (2.72) and minimum disease score (0.17) at 40 DAS. In conclusion, grape bunches packed in zeolite-chlorine-polybag, zeolite-silverpolybag and zeolite-biodegradable bags kept in CFB were found to be superior in maintaining the overall physico-chemical and sensory qualities of table grapes. These packages were capable of extending the shelf-life of grapes by additional 2 days in ambient storage and 15 days in refrigerated storage when compared to CFB both under ambient condition (2 days shelf life) and under refrigerated condition (15 days shelf life) respectively.en_US
dc.identifier.otherUHS18PGM1068
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810198196
dc.keywordsHorticulture, Post Harvest Technology, Grapes, Berry Drop, Acid Ratio, Shelf Life, Ambient, Sensory, Zeolite, Chlorine, Polybag, Physico-chemical, Tiratable Acidity, Biodegradable, Physiological, Punnet Box, UHS18PGM1068, T667.en_US
dc.language.isoEnglishen_US
dc.pages150p. (Due to pdf. conversion there is a difference in pages of soft copy and hard copy).en_US
dc.publisherUniversity of Horticultural Sciences Bagalkot. (College of Horticulture, Bagalkot).en_US
dc.subPost Harvest Technologyen_US
dc.themeSTUDIES ON ZEOLITE-LDPE COMPOSITE BAGS TO EXTEND SHELF LIFE OF GRAPESen_US
dc.these.typeM.Scen_US
dc.titleSTUDIES ON ZEOLITE-LDPE COMPOSITE BAGS TO EXTEND SHELF LIFE OF GRAPESen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
DARSHAN, Y. G. UHS18PGM1068.pdf
Size:
5.53 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Theses