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Advisor Eshwarappa, H.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Technology (M.Tech.)
Publisher University of Agricultural Sciences
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Agriculture & related technologies
Subject Keyword Agricultural Processing and Food Engineering ♦ Studies On Shelf Life Extension
Abstract Pomegranate (Punica granatum L.) is the fruit crop which belongs to a family Punicaceae which includes only one genus and two species, the other one little-known, being P. protopunica peculiar to the island of Socotra. It is one of the most favourite table fruits and also one of the hardiest fruit plants that thrives well under arid and semi arid climatic conditions. Transpiration losses in pomegranate limit their storage life and marketability. The shelf life of pomegranate is ten days only in ambient storage. This study was geared towards assessing the suitability of the Modified Atmosphere (MA) storage to extend the shelf-life of pomegranate fruit. The respiratory behaviour of pomegranate was studied in sealed glass chambers (replicated thrice) stored at two temperatures-ambient (25-27O C) and 10O C. The peak respiration rate of pomegranate was found as 44.6 mgCO2kg-1h-1 and 15.03 mgCO2kg-1h-1 at ambient and 10O C, respectively. Fruits were packed in three types of packages-200 gauge HDPE, 300 gauge HDPE with different ventilations and silicone membrane system with different window areas in airtight PET jars and stored at two temperatures (ambient and 10O C) to find different packages and storage systems for enhancing shelf-life. Gas composition, PLW and microbial growth inside the storage environments (packages) were determined and the quality parameters were estimated immediately after removing from MAP. With the passive gas modification, pomegranate was stored in ambient storage for 10 days whereas in modified atmosphere packaging (200 gauge HDPE, 300 gauge HDPE and silicone membrane system), the shelf-life of pomegranate fruits was extended up to 60, 60, 25 days at ambient and 96, 96, 65 days at 10O C temperature respectively. With regard to the entire sensory and quality parameters, HDPE package was found to be better than silicon membrane system.
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Bangalore
Size (in Bytes) 7.30 MB
Page Count 152