EVALUATION OF SOLAR DRYER FOR DRYING OF WILD FRUITS GROWN IN HIMACHAL PRADESH

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dc.contributor.advisorAGGARWAL, R.K.
dc.contributor.authorANKUSH
dc.date.accessioned2018-01-18T10:14:55Z
dc.date.available2018-01-18T10:14:55Z
dc.date.issued2017-11
dc.description.abstractABSTRACT The present investigation entitled “Evaluation of solar dryer for drying of wild fruits grown in Himachal Pradesh” was carried out at the experimental farm of Department of Environmental science, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) during 2016-2017. Wild ber (Zizyphus mauriatiana L.), wild anola (Phyllanthus emblica L.) and wild bael (Aegle marmelos L. Corr.) were selected for present study and pre treated for drying. There were five treatments and three replications viz. untreated fruits dried in open sun (T1), treated fruits dried in open sun (T2), treated fruits dried in indirect solar dryer (T3), untreated fruits dried in indirect solar dryer (T4) and treated fruits dried in mechanical cabinet dryer (T5). Drying modes like mechanical cabinet drier, indirect solar drier and open sun were compared on the basis of various physicochemical and sensory quality characteristics. The ber, aonla flakes and bael slices from the best drying mode (mechanical cabinet drier; 60 ± 20C) possessing maximum desirable physico-chemical characteristics considered for shelf life analysis. Average drying time in open sun was 237.00 hours, 134.10 hours in solar dryer, and 22.23 hours in mechanical cabinet dryer. Average drying rate in open sun was 0.35 gram per hour, 0.63 gram per hour in solar dryer and 4.32 gram per hour in mechanical cabinet dryer. Average water activity of dried fruits was 0.364 in open sun, 0.327 in solar dryer and 0.276 in mechanical cabinet dryer. Cost of drying was minimum in indirect solar dryer for all fruits as compared to mechanical cabinet dryer. Treated wild ber, wild aonla and wild bael slices dried in indirect solar dryer (T3) were rated best among all drying modes on the basis of highest sensory scores of colour (8.60), texture (8.40), taste (8.60) and overall acceptability (8.53) for wild ber, colour (8.60), texture (8.40), taste (8.60) and overall acceptability (8.53) for aonla and colour (8.60), texture (8.40), taste (8.60) and overall acceptability (8.53 for wild bael. The fruit dried in indirect solar dryer and control (untreated fruits+ open sun) were packed in polyethylene pouches and stored for three months under ambient storage conditions. The physicochemical characteristics like moisture, total soluble solids, titratable acidity, pH, reducing sugars and total sugars were changed slightly.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810039606
dc.keywordswild fruits grown in Himachal Pradesh,solar dryer,Evaluationen_US
dc.language.isoenen_US
dc.pages76+VIen_US
dc.publisherUHF,NAUNIen_US
dc.subEnvironmental Scienceen_US
dc.subjectnullen_US
dc.themewild fruits grown in Himachal Pradesh,solar dryer,Evaluationen_US
dc.these.typeM.Scen_US
dc.titleEVALUATION OF SOLAR DRYER FOR DRYING OF WILD FRUITS GROWN IN HIMACHAL PRADESHen_US
dc.typeThesisen_US
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