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Advisor: Munjal, Dr.S.V
Kale, prof.A.A
Desai, Dr.B.B
Waskar, Dr.D.P
Publisher: Mahatma Phule Krishi Vidyapeeth, Rahun - 413 722, Dist Ahmednagar, Maharashtra State, India
Language: en
Type: Thesis
Agrotags: sowing, intercropping, wheats, tillage equipment, seed drilling, crops, mustard, fertilizers, land resources, chickpeas
Abstract: The present investigation entitled "Effect of post-harvest chemical treatments on biochemical constituents and shelf life of guava {Psidium guajava L.) during ambient storage" was undertaken in the Laboratory of the Department of Biochemistry, M.P K.V, Rahun during 1997-98 with the view of developmg the effective post-harvest chemical treatment for the extension of shelf life of guava fruits of L-49 cultivars and Allahabad Safeda, harvested at mature hard green stage Various post-harvest chemical treatments mcluded were . ethylene absorbants viz, KMn04 (1 %/ w/v) and K^Os, (1 %, w/v) calcium salt treatments (2 %, w/v), cytokinm (BA) alone (15 ppm) and cytokinm (15 ppm) with calcium nitrate (2 %, w/v) and wax emulsion (12 %, v/v). The treated and air dned fruits were packed m perforated polyethylene bags at the ambient conditions (temperature, 17.84 XIV to 30 66 and RH 57.74 to 89 77) The physiological loss m weight and the development of colour along with changes m biochemical constituents on day 3 and day 9 as influenced by the chemical treatments were assessed and analysed for the statistical data by FCRD The organoleptic evaluation of fruits of both the cultivars was also recorded on day 6 of storage The results revealed that there was the highest loss in per cent PLW of the control fruits of both the cultivars On day 9 of ambient storage, lowest per cent PLW was noticed in fruits treated with BA (15 ppm), followed by those treated with wax emulsion Further the highest colour score was observed in the control fruits of both the cultivars the slow colour score was seen in fruits treated with BA on day 9 The evaluation of fruits of both the cultivars for biochemical constituents revealed that the % T S S , acidity, reducmg and non reducing sugars contents, ascorbic acid, % pectms increased during the ambient sotrage with the advancement of storage periodunder ambient conditions in fruits of control treatment. However, the polyphenol content of fruits of both the cultivars declined with the advancement of ambient storage. The post-harvest treatment of benzyl adenine at 15 ppm concentration appreciably slowed down the changes m the biochemical constituents of these two cultivars except in the treatment of BA+ Ca(N03)2, which proved to be slightly better for slowmg down thepolyphenol content on day 9. The fruits of both the cultivars treated with BAhad the highest organoleptic score and shelf life The fruits of cultivar L-49slighlty had better shelf hfe than Allahabad Safeda
Subject: Agricultural Biotechnology
Theme: Agricultural Biochemistry
These Type: M.Sc
Issue Date: 1998-12-31
Appears in Collections:Thesis

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