Browsing by Author "SHANKARAIAH, V."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
ThesisItem Open Access ORGANIC MANURES ON THE POST HARVEST QUALITY OF OKRA (Abelr~zosclrris esciilerzfnis (L.) Moenc h)"(professor jayashankar telangana state agricultural university hyderabad, 2003) SAMEERA, D.L.; SHANKARAIAH, V.res (decomposed cow dung (9 t/ha), fresh cow dung (9 tfha), vermicompost (6 t/ha and 12 dha) and recommended dose of NPK fertilizers (100: 50: 50 kg NPWha) and different gauge polythene bags (150 and 250 gauge) with ventilations (0, 0.5% and 1%) at different storage conditions (CS, CC and RT) on the post harvest quality and physic0 chemical changes of okra fruits var. Arka Anamika grown in Students Farm, College of Agriculture, Rajendranagar and studies were conducted in the Post Harvest Technology Laboratory, Department of Horticulture, College of Agriculture, Rajendranagar during the year 2003. Among the different organic manures tried, fruits grown with 50% recommended dose of NPK + 50% decomposed cow dung recorded higher yield. Fruits grown with decomposed cow dung were found to be effective on more shelf life for 14 days in CS, 12 days in CC and 8 days in RT by recording low PLW and in retention of higher total sugar, reducing sugars and acidity. Fruits grown with 50% recommended dose of NPK + 50% decomposed cow dung were effective in retaining high ascorbic acid content and chlorophyll content. Acidity, total sugars, reducing sugars, chlorophyll content, ascorbic acid were decreased gradually till the end ofthe storage periods in all treatments and the storage conditions irrespective of polythene bags with different gauges and ventilations. Fruits grown with decomposed cow dung preserved in 5% brine solution has recorded higher score indicating more acceptability than 10% brine solution compared to other treatments.ThesisItem Open Access STUDIES ON POST HARVEST HANDLING AND STORAGE OF BANANA CVROBUSTA(Professor Jayashankar Telangana State Agricultural University, 1994) BHAGWAN, A.; SHANKARAIAH, V.of packaging materials on transportation and subsequent storage of banana, transported from Kovvur Banana Research Station to Post—Harvest Technology, laboratory Rajendranagar, Hyderabad and the effect of antioxidants like sodium benzoate and storage conditions on storage life of banana cv. Robusta in the post harvest technology laboratory, Department of Horticulture, College of Agriculture during 1993-94. Physico—chemical changesincluding polyamines during storage and their relation to shelf life of banana were also studied. Among different packaging materials tried,corrugated fibreboard box was found to be effective in reducing the bruising percentage during transportation and subsequent rotting during storage. Total soluble solids, total sugars,reducing sugars and acidity increased upto ripening and then thereafter decreased at the end of shelf life. However starch content, vitamin—C decreased from initial day to the end of the shelf life. with regard to above parameters corrugated fibreboard box was found to be effective followed by polythene covers. Post harvest sprays of sodium benzoate at 500 ppm + wax 4% at 200C showed higher total sugars, reducing sugars, acidity, vitamin-C, organoleptic score both at eating ripe stage and. at end of the shelf life. The physiological loss in weight was lower and shelf life was higher in sodium benzoate at 500 ppm + wax 4%. Qualitative analysis of polyamines showedputrescine in) be the major polyamine throughout the storage period followed by spermidine and spermine. In the treatments which had shorter shelf life Spermine was undectable early in the storage period indicating its critical role in determining shelf life. Quantitatively polyamines decrease from initial day to end of shelf life in all_'the treatments. However, the degradation of polyamines was slow in sodium benzoate at 500 ppm + wax 4%, which has longest shelf life when compared to control.ThesisItem Open Access STUDIES ON POST HARVEST HANDLING OF SWEET ORANGES(Professor Jayashankar Telangana State Agricultural University, 1999) RAJAKRlSHNA REDDY; SHANKARAIAH, V.Investigationswerecarriedouttounderstandtheeffectofpackaging material with paper shreads (Bamboo baskets (BB), Date palm baskets (DPB), Deal wood boxes (DWB), Corrugated fibre board boxes (CFB), Corrugated frrbre board with honey comb type (CFBHC) and Gunny bag (GB)) on transportation and various chemical (NaCl, GA3 and 2, 4—D) treatments subsequently to enhance the storage life of sweet orange Cv. Sathgudi, transportedfromTanagal toPostHarvestTechnologyLaboratory, Rajendranagar, Hyderabad and the studies were conducted in the Post Harvest Technology Laboratory, Department of Horticrrlture, College of A}!.I'ie‘rlltur(‘. Ruir‘urlraruurnr (luring the year l‘)‘)7. Among the different packagingmaterials tried, CFBHC was found to be effective in reducing the bruising percentage during transportation and subsequently rotting and l’LW during storage. The juice and peel content, acidity, ascorbic acid and orgarrolcptic score were also decreased gradually till the curl ol~ the storage period, whereas the total soluble solids, reducing sugars reached to the peak and then gradually declined as the storage period advanced. The physiological loss in weight was lower in CFB packed fruits treated with NaCl l per cent + GA} 500 ppm in all storage conditions. llighcrretention ofreducing sugars, acidity, ascorbic acid and organoleptic score was observed throughout the storage period with the Fruits treated withNaCl 1 per cent+ GA} 500 ppm, in all the conditions as compared to other treatments. Fruits treatedwithGA} 500 ppm -I-2,4—D 500 ppm significantly delayed the colour development by retaining green colour than any other treatments.