INFLUENCE OF HARVESTING STAGES AND POST HARVEST TREATMENTS ON FRUIT QUALITY OF BITTERGOURD GROWN UNDER PROTECTED STRUCTURE

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dc.contributor.advisorAvani Kumar Singh
dc.contributor.authorASHWINI HANMANT JAGADALE
dc.date.accessioned2020-02-28T06:12:53Z
dc.date.available2020-02-28T06:12:53Z
dc.date.issued2019
dc.descriptionT-10212en_US
dc.description.abstractThe present investigation was undertaken during 2018-2019 at the experimental farm of Centre for Protected Cultivation Technology and at Division of vegetable science ICARIARI, New Delhi. Two bitter gourd varieties (Pusa Rasdar and S-32) were grown under polyhouse condition using Randomised Complete Block Design (RCBD) to study physicchemical changes in bitter gourd fruits grown under protected structures at different harvesting stages and to find out effect of edible coating and shrink wrapping on storage life and quality of bitter gourd fruit. The results revealed that the maximum fruit length (19.87cm) was recorded in S-32 compared to Pusa Rasdar on 24 days after pollination whereas maximum fruit diameter (6.23cm) and fruit weight (153.22g) was recorded in Pusa Rasdar. The maximum fruit juice content was recorded in Pusa Rasdar (61.65%) at 24 days after pollination whereas maximum chlorophyll-a (7.86 µg/g), chlorophyll-b (3.46µg/g) and total chlorophyll content (9.48µg/g) was recorded in S-32 compared to Pusa Rasdar. The maximum β-carotene content was recorded in S-32 (3.62µg/ml) at 24 days after pollination. The saponin content of fruits was recorded maximum at 16 DAP in S-32 (0.95mg/g) and charantin content was found to be maximum at16 DAP in S-32 (0.39mg/g). The edible wax coatings (guar gum (GG), sodium alginate (SA) and vegetable wax (VW) were applied before storage. Pusa Rasdar remained marketable up to 6 days during winter and 3 days during summers at room temperature. The PLW for control fruits was observed to be 25.11% until 9 days of storage whereas PLW for coated fruits ranged from 11.67 % to 15.45%. PLW was much lesser in cold stored fruits. Amongst the coatings, GG and SA gave remarkably better results over VW. In control fruits, the cutting force was found to decrease from 126.5 N to 61.14 N (51.67%) until 9th day of storage whereas, coated fruits required higher force to cut over control fruits. The juice of control fruits decreased to 22.11% at room temperature whereas fruits coated with GG, SA and VW the juice content decreased to 36.46%, 39.60 % and 31.95 % respectively after 9 days of storage. When fruits were stored at cold storage, chlorophyll content in control decreased up to 0.92g/g during 15 days of storage. While in case of GG and SA coated fruits chlorophyll content decreases up to 1.12 and 1.08µg/g during 15 days period of storage. Highest chlorophyll retention was observed for GG coated fruits in both room temperature and cold storage. Hence, the edible coatings with guar gum and sodium alginate were found most effective for enhancing of shelf life of bitter gourd cv. Pusa Rasdar during room temperature for 2 to 3 days and 5 to 6days in cold storage. सारen_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810143880
dc.language.isoen_USen_US
dc.publisherDIVISION OF VEGETABLE SCIENCE ICAR-INDIAN AGRICULTURAL RESEARCH INSTITUTE NEW DELHIen_US
dc.subVegetable Scienceen_US
dc.subjectnullen_US
dc.themeINFLUENCE OF HARVESTING STAGES AND POST HARVEST TREATMENTS ON FRUIT QUALITY OF BITTERGOURD GROWN UNDER PROTECTED STRUCTUREen_US
dc.these.typeM.Scen_US
dc.titleINFLUENCE OF HARVESTING STAGES AND POST HARVEST TREATMENTS ON FRUIT QUALITY OF BITTERGOURD GROWN UNDER PROTECTED STRUCTUREen_US
dc.typeThesisen_US
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