COMPARISON OF TWO METHODS OF PURPLE TOP TURNIP DRYING BASED ON ENERGY CONSUMPTION AND QUALITY PARAMETERS

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SADRNIA H.; MONFARED H.; KHOJASTEHPOUR M.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: JOURNAL OF AGRICULTURAL MACHINERY Year:2015 | Volume:5 | Issue:1 Page(s): 143-153

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Title

COMPARISON OF TWO METHODS OF PURPLE TOP TURNIP DRYING BASED ON ENERGY CONSUMPTION AND QUALITY PARAMETERS

Author(s)

SADRNIA H. | MONFARED H. | KHOJASTEHPOUR M. | Issue Writer Certificate

Keywords

REHYDRATIONQ2

SHRINKAGEQ2

VACUUM DRYERQ2

TURNIPQ2

Abstract

Drying is one of the oldest methods to preserve agricultural products and hence expanding the food market. By drying, the agricultural products can be stored and transferred to the market throughout the year. One of the most important and nutritious vegetables is TURNIP which can be used by drying in out of season. In this research, the hot air and vacuum drying methods of TURNIP were compared. The effect of independent factors including temperature and vacuum, on dependent factors such as the SHRINKAGE, REHYDRATION and rate of electric energy consumption on final products of TURNIP were investigated. A randomized completely design for hot air dryer and a factorial experiment based on completely randomized design for drying under vacuum condition were used. Results showed that the temperature and vacuum have affected the SHRINKAGE, REHYDRATION and electricity consumption. SHRINKAGE parameter is more depend on the final humidity of product and the energy consumption of the devices depends on time. The best quality of dried TURNIP was achieved from hot air drying device with final humidity of 14±1%, SHRINKAGE of 39.98%, REHYDRATION of 4.45 and consumed electricity of 32.36 kWh kg-1 of DM in 60oC. For the vacuum drying device the best quality of produce achieved with SHRINKAGE of 38.12%, REHYDRATION of 4.87 and consumed electricity of 30.58 kWh kg-1 of DM in vacuum condition of 10 kPa in 60oC. Comparison of results showed that the VACUUM DRYER is more appropriate than the hot air dryers for drying TURNIP with better quality and lower power consumption.

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APA: Copy

SADRNIA, H., MONFARED, H., & KHOJASTEHPOUR, M.. (2015). COMPARISON OF TWO METHODS OF PURPLE TOP TURNIP DRYING BASED ON ENERGY CONSUMPTION AND QUALITY PARAMETERS. JOURNAL OF AGRICULTURAL MACHINERY, 5(1), 143-153. SID. https://sid.ir/paper/201452/en

Vancouver: Copy

SADRNIA H., MONFARED H., KHOJASTEHPOUR M.. COMPARISON OF TWO METHODS OF PURPLE TOP TURNIP DRYING BASED ON ENERGY CONSUMPTION AND QUALITY PARAMETERS. JOURNAL OF AGRICULTURAL MACHINERY[Internet]. 2015;5(1):143-153. Available from: https://sid.ir/paper/201452/en

IEEE: Copy

H. SADRNIA, H. MONFARED, and M. KHOJASTEHPOUR, “COMPARISON OF TWO METHODS OF PURPLE TOP TURNIP DRYING BASED ON ENERGY CONSUMPTION AND QUALITY PARAMETERS,” JOURNAL OF AGRICULTURAL MACHINERY, vol. 5, no. 1, pp. 143–153, 2015, [Online]. Available: https://sid.ir/paper/201452/en

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