STUDY ON THE EFFECT OF OSMOTIC PRETREATMENT ON THE STRUCTURAL AND MICROSTRUCTURAL PROPERTIES

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EMAM JOMEH ZAHRA; TAHMASBI M.; PIROUZIFARD M.KH.; ASGARI GH.R.

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Journal: Iranian Journal of Biosystems Engineering Year:2008 | Volume:39 | Issue:1 Page(s): 133-139

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Title

STUDY ON THE EFFECT OF OSMOTIC PRETREATMENT ON THE STRUCTURAL AND MICROSTRUCTURAL PROPERTIES

Author(s)

EMAM JOMEH ZAHRA | TAHMASBI M. | PIROUZIFARD M.KH. | ASGARI GH.R. | Issue Writer Certificate

Keywords

TOMATOQ3

OSMOTIC DEHYDRATIONQ3

WATER LOSSQ3

SOLID GAINQ3

TEXTURE ANALYSISQ3

AIR DRYINGQ3

Abstract

TOMATOes (Roma cultivar) picked up for the study was obtained from Varaminelocal market. Each TOMATO was divided into four portions. Quarter portions of TOMATO were placed in osmotic solutions that were different in levels of sucrose and NaCl (30 and 40% for sucrose, and 5, 10 and 15% for NaCl). OSMOTIC DEHYDRATION was carried out for varied time durations from. 15 up to 240 min. Temperature of dehydration process were kept constant at 30±2°C. Ratio of TOMATO to solution was 1:10. The mixture was agitated by use of an agitating system of 150 rpm. Two osmotic solutions of specified concentration and treatment times were chosen, following a determination of WATER LOSS vs SOLID GAIN for all the treatments. Samples dehydrated with these (5% NaCl+40% sucrose or 10% NaCl+40% sucrose) solutions were then dried in a hot air dryer. Finally, dried samples were analyzed for their texture and microstructure by employing instron and scanning electron microscope (SEM) respectively. Comparing the osmosis treated samples with non-osmosed ones demonstrated that applying osmotic pretreatment Gauseda softening of structure. It reduced the shrinkage of dried product by restraining the rupture of product's cellular structure.

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APA: Copy

EMAM JOMEH, ZAHRA, TAHMASBI, M., PIROUZIFARD, M.KH., & ASGARI, GH.R.. (2008). STUDY ON THE EFFECT OF OSMOTIC PRETREATMENT ON THE STRUCTURAL AND MICROSTRUCTURAL PROPERTIES. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 39(1), 133-139. SID. https://sid.ir/paper/144497/en

Vancouver: Copy

EMAM JOMEH ZAHRA, TAHMASBI M., PIROUZIFARD M.KH., ASGARI GH.R.. STUDY ON THE EFFECT OF OSMOTIC PRETREATMENT ON THE STRUCTURAL AND MICROSTRUCTURAL PROPERTIES. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2008;39(1):133-139. Available from: https://sid.ir/paper/144497/en

IEEE: Copy

ZAHRA EMAM JOMEH, M. TAHMASBI, M.KH. PIROUZIFARD, and GH.R. ASGARI, “STUDY ON THE EFFECT OF OSMOTIC PRETREATMENT ON THE STRUCTURAL AND MICROSTRUCTURAL PROPERTIES,” IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 39, no. 1, pp. 133–139, 2008, [Online]. Available: https://sid.ir/paper/144497/en

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