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Authors: Balwan Singh
Advisor: Kashyap, M.C.
Title: Comparative evaluation of different drying methods for drying of Kasuri Fenugreek leaves (Methi)
Publisher: CCSHAU
Language: en
Type: Thesis
Keywords: Evaluation of Different Drying Methods for Drying
Abstract: (An abstract of the thesis presented in partial fulfillment of the requirement for the degree of M.Tech. (Agricultural Engineering) in Agricultural Processing and Food Engineering of the CCS Haryana Agricultural University, Hisar). The green leafy vegetable plant of fenugreek (Triogenella-Foenumgraecum L.) selected for study are important green leafy vegetable plants grown in Haryana and provide vegetable to market. Fenugreek leaves have a very high moisture content i.e. (80-92% wb.) at the time of harvest. They should be immediately dried after harvest for proper storage, easy transportation and handling to avoid any spoilage. Since, mostly sun drying is followed for drying of these fenugreek leaves by the farmers, it -93- affects the quality of the product. There is a need to suggest drying system that gives good quality of the produce and suitable for farmers to dry the product at field level and fetch good price. In the present research work was carried out for different drying methods were studies i.e. sun drying, shade drying, fluidized bed drying 40, 50, 60ºC and tray drying at 40, 50, 60ºC. To bring the moisture content of fenugreek leaves was brought to storable condition i.e. (6-12% db.). Tray drying at 60ºC took minimum time 4 hrs followed by Fluidized bed drying at 60ºC took minimum time of 6 hrs, and open sun drying took 8 hrs followed by and shade drying 12 hrs of blanched treatment sample while in pyramidal treatment sample of tray drying at 60ºC took minimum time of 3 hrs followed by fluidized bed drying at 60ºC took minimum time 5 hrs, and open sun drying took 7 hrs followed by shade drying took 10 hrs. Henderson and Pabis model was tested for prediction of drying behaviour of Fenugreek leaves empirically. The values of model constants for different drying method were also determined. In the different methods of drying were compared for drying of fenugreek leaves. The drying methods were tray drying 40, 50, 60ºC, fluidized bed drying 40, 50, 60ºC, shade drying and open sun drying. The dehydrated product were stored for 60 days and the effect of storage was also studied. The total chlorophyll content ascorbic acid of the fenugreek leaves were significantly affected by drying methods as well as storage time. But there was non- significantly effect on drying methods and storage time on the calcium and iron content. There was no effect of drying methods on the rehydration ratio.
Subject: Agricultural Engineering
Theme: Comparative evaluation of different drying methods for drying of Kasuri Fenugreek leaves (Methi)
These Type: M.Sc
Issue Date: 2004
Appears in Collections:M. Sc. Dissertations

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