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Rheology, fatty acid profile and storage characteristics of cookies as influenced by flax seed (Linum usitatissimum).

Jyotsna, R. and Indrani, D. and Prabhasankar, P. and Venkateswara Rao, G. (2012) Rheology, fatty acid profile and storage characteristics of cookies as influenced by flax seed (Linum usitatissimum). Journal of Food Science and Technology, 49 (5). pp. 587-593. ISSN 0022-1155

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Abstract

Flaxseed is a versatile functional ingredient owing to its unique nutrient profile. Studies on the effect of substitution of roasted and ground flaxseed (RGF) at 5, 10, 15 and 20% level on the wheat flour dough properties showed that amylograph peak viscosity, farinograph dough stability, extensograph resistance to extension and extensibility values decreased with the increase in the substitution of RGF from 0–20%. The cookie baking test showed a marginal decrease in spread ratio but beyond substitution of 15% RGF the texture and flavour of the cookies was adversely affected. The data on storage characteristics of control and cookies with 15% RGF showed no significant change with respect to acidity of extracted fat and peroxide values due to storage of cookies upto 90 days in metallised polyester pouches at ambient conditions. The gas chromatographic analysis of fatty acid profile indicated that the control cookies contained negligible linolenic acid and the flaxseed cookies contained 4.75 to 5.31% of linolenic acid which showed a marginal decrease over storage. Hence flaxseed could be used as a source of omega–3–fatty acid.

Item Type: Article
Uncontrolled Keywords: Cookies Fatty acids Flaxseed Gas chromatography Rheology Storage
Subjects: 600 Technology > 08 Food technology > 14 Physical properties > 03 Rheology
600 Technology > 08 Food technology > 26 Bakery products
Divisions: Flour Milling Bakery and Confectionary Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 28 Aug 2012 06:07
Last Modified: 28 Aug 2012 06:07
URI: http://ir.cftri.com/id/eprint/10975

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