Vol. 6 (3) : May-June 2015 issue
Green Farming Vol. 6 (3) : 630-633 ; May-June, 2015
Suitability of drying methods for Roselle (Hibiscus sabdariffa L.) calyces
R.R. ANDHALEa1*, SYED IMRAN HASHMIa2, P.N. SATWADHARb3 and H.W. DESHPANDEc4
aDeptt. of Food Chemistry and Nutrition, bDeptt of Food Trade and Business Management,
cDeptt of Food and Industrial Microbiology, College of Food Technology , V.N. Marathwada Krishi Vishwavidyalaya, Parbhani - 431 402 (Maharashtra)
Designation : 1Res. Scholar *(rajkumar.andhale@yahoo.in), 2Senior Research Asstt., 3Professor & Head, 4Associate Professor
Subject : Food Science, Preservation & Processing, Protectants & Infestation and Post-harvest Technology
Paper No. : P-2587
Total Pages : 4
Received : 01 September 2014
Revised accepted : 13 March 2015
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Citation :
R.R. ANDHALE, SYED IMRAN HASHMI, P.N. SATWADHAR and H.W. DESHPANDE. 2015. Suitability of drying methods for Roselle (Hibiscus sabdariffa L.) calyces. Green Farming Vol. 6 (3) : 630-633 ; May-June, 2015
ABSTRACT
The present investigation is carried out with objective to study the suitability of different drying treatments and method for Roselle Calyces.The samples were subjected for the different treatments such as without blanching, blanching for 1 min, 2 min and 3min, different drying methods. Further, the effect on drying on colour acceptability, drying yield, drying ratio and overall acceptability was determined. The results revealed that slight variations exist with respect to yield of product, while the the cabinet dried sample (C160) showed higher values (12.3R) for colour and drying ratio can be directly correlated to drying yield of Roselle. Amongst the different methods, cabinet drying resulted in minimum drying time (8h) compared to sun (26h) and shade drying (73h). It is concluded that cabinet dried sample with prior blanching for 1 minute was optimum in terms of high colour quality for drying of Roselle calyces amongst all other treatments and drying methods.
Key words :
Drying method, Hibiscus sabdariffa L., Physico-chemical analysis, Roselle calyces, Sun and shade drying.
