Thumbnail Image

Thesis

Browse

20161
Reset filters
Subject: Horticulture × Author: Amandeep Kaur × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Title of the Thesis : Storage behaviour of plum (Prunus salicina Lindl.) fruits cv. Satluj Purple in response to various chemicals
    (Punjab Agricultural University Ludhiana, 2016) Amandeep Kaur; Jawandha, S.K.
    The present investigation entitled “Storage behaviour of plum (Prunus salicina Lindl.) fruits cv. Satluj Purple in response to various chemicals” was conducted in Department of Fruit Science, Punjab Agricultural University, Ludhiana during the year 2015. Plum fruits of cv. Satluj Purple were harvested at colour break stage and treated for 5-minutes in aqueous solutions of putrescine (1, 2 and 3 mmolL-1 ), boric acid (1, 2 and 3%) and sodium benzoate (0.5, 1 and 1.5%). Treated fruits were packed in corrugated fibre board (CFB) boxes with paper lining before storage at 0-1˚C temperature and 90-95% RH. Fruit samples were analysed after 7, 14, 21, 28 and 35 days of cold storage for various physico-chemical characteristics. Result revealed that physiological loss in weight (PLW) and spoilage of fruits increased with storage period, whereas fruit firmness, pulp: stone ratio and titrable acidity (TA) showed a declining trend with the advancement of storage period. Other parameters like sensory quality rating, total soluble solids, TSS: acidity ratio, total sugars, reducing sugars, non-reducing sugars and pectin methyl esterase activity (PME) showed an increase up to 21 days of storage in all the treatments except putrescine @ 3, 2 mmolL-1 and boric acid @ 3% treatments, where these parameters were increased up to 28 days of storage. Post-harvest treatments of putrescine (3, 2 mmolL-1) and boric acid (3%) proved to be effective in extending the post-harvest life of plum fruits upto 28 days, whereas sodium benzoate (1.5%) extended the post-harvest life of plum fruits upto 21 days under cold storage conditions. Postharvest treatment of putrescine @ 3 mmolL-1 was recorded most effective in reducing physiological loss in weight (PLW), spoilage, pectin methyl esterase activity (PME) and maintaining the fruit firmness, sensory quality, total soluble solids (TSS), titrable acidity (TA), total sugars, reducing sugars and non-reducing sugars during the entire storage period as compared to other treatments.