EFFECTS OF BLANCHING AND HYDROCOLLOID COATING OF POT ATOESWITH METHYL CELLULOSE AND TRAGACANTH ON FRENCH-FRIES OIL UPTAKE AND QUALITATIVE PROPERTIES

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HOSEINABADI V.; BADII F.; GHARACHORLOO M.; HESHMATI M.

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Journal: Iranian Journal of Nutrition Sciences and Food Technology Year:2012 | Volume:6 | Issue:4 (23) Page(s): 71-81

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Title

EFFECTS OF BLANCHING AND HYDROCOLLOID COATING OF POT ATOESWITH METHYL CELLULOSE AND TRAGACANTH ON FRENCH-FRIES OIL UPTAKE AND QUALITATIVE PROPERTIES

Author(s)

HOSEINABADI V. | BADII F. | GHARACHORLOO M. | HESHMATI M. | Issue Writer Certificate

Keywords

FRENCH FRIESQ3

FRIED POTATOESQ3

SORBITOLQ3

METHYL CELLULOSEQ3

TRAGACANTHQ3

FAT REDUCTIONQ3

Abstract

Background and Objective:FRENCH FRIES are a food product with an upward consumptuion trend in Iran. Because of high oil uptake during frying, FRENCH FRIES are an energy-dense food item, providing a very large number of calories to the body. Therefore, efforts to reduce the rate of oil uptake by this popular food item would contribute to the public’s health. The purpose of this study was to determine the effects of blanching and coating of potatoes with METHYL CELLULOSE and TRAGACANTH on French-fries oil uptake and qualitative properties.Materials and Methods: Strips of potato (Agria variety) were prepared, blanched in water or a calcium chloride solution (0.5%), coated with a solution of METHYL CELLULOSE (0.5, 1.0 and 1.5%), TRAGACANTH (0.5, 1.0 and 1.5%), METHYL CELLULOSE (0.5, 1.0 and 1.5%) and SORBITOL (0.5%), or TRAGACANTH (0.5, 1.0 and 1.5%) and SORBITOL (0.5%) and deep-fried. Oil uptake, moisture content, and color of the FRENCH FRIES were measured and their sensory properties determined and compared with those of control samples.Results: Blanching and hydrocolloid coatings of the samples brought about a decrease in oil uptake and increases in moisture content and texture tenderness of the potato strips (p<0.01). Blanching in calcium chloride alone reduced oil uptake by 8.61%. In comparison with the control samples, coating with methylcellulose (1.5%) with SORBITOL (0.5%) decreased oil uptake from 19.85% to 16.29%. Blanching in calcium chloride resulted in a significant 5%increase in moisture content. The hydrocolloid coatings caused significant increases in moisture content and resistance to cutting of the samples (P<0.01), such that the highest moisture content (44.60%) was obsereved in the samples coated with METHYL CELLULOSE (1.5%) TRAGACANTH at aconcentartion of 1.5% with SORBITOL at a concentartion of 0.5% brought about the highest resistance (211/13 Newton) to cutting. The findings also showed that hydrocolloid coatingsresulted in significant incremets in the L*b*, a* factors of the FRENCH FRIES color as compared to the control samples. However, there were no significant differences among samples with regard to sensory characteristic.Conclusion: It can be concluded that methylcellulose is a more suitable coating than TRAGACANTH for FRENCH FRIES. A coating containing 1.5% METHYL CELLULOSE is the best coating for potato strips due to less oil uptake, higher moisture content, and better texture and color. Coatings of methylcellulose and TRAGACANTH plus SORBITOL result in noticeabe differences in oil uptake and other qualitative properties. However, for economic reasons it is not essential to use SORBITOL in coatings for potato strips.

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APA: Copy

HOSEINABADI, V., BADII, F., GHARACHORLOO, M., & HESHMATI, M.. (2012). EFFECTS OF BLANCHING AND HYDROCOLLOID COATING OF POT ATOESWITH METHYL CELLULOSE AND TRAGACANTH ON FRENCH-FRIES OIL UPTAKE AND QUALITATIVE PROPERTIES. JOURNAL OF NUTRITION SCIENCES & FOOD TECHNOLOGY, 6(4 (23)), 71-81. SID. https://sid.ir/paper/121394/en

Vancouver: Copy

HOSEINABADI V., BADII F., GHARACHORLOO M., HESHMATI M.. EFFECTS OF BLANCHING AND HYDROCOLLOID COATING OF POT ATOESWITH METHYL CELLULOSE AND TRAGACANTH ON FRENCH-FRIES OIL UPTAKE AND QUALITATIVE PROPERTIES. JOURNAL OF NUTRITION SCIENCES & FOOD TECHNOLOGY[Internet]. 2012;6(4 (23)):71-81. Available from: https://sid.ir/paper/121394/en

IEEE: Copy

V. HOSEINABADI, F. BADII, M. GHARACHORLOO, and M. HESHMATI, “EFFECTS OF BLANCHING AND HYDROCOLLOID COATING OF POT ATOESWITH METHYL CELLULOSE AND TRAGACANTH ON FRENCH-FRIES OIL UPTAKE AND QUALITATIVE PROPERTIES,” JOURNAL OF NUTRITION SCIENCES & FOOD TECHNOLOGY, vol. 6, no. 4 (23), pp. 71–81, 2012, [Online]. Available: https://sid.ir/paper/121394/en

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