RT - Journal Article T1 - Optimization of Extraction Conditions of an Iranian Flaxseed Gum Using the Response Surface Method JF - JSTNAR YR - 2005 JO - JSTNAR VO - 8 IS - 4 UR - http://jstnar.iut.ac.ir/article-1-309-en.html SP - 145 EP - 156 K1 - Iranian flaxseed K1 - Gum K1 - Response surface methodology K1 - Viscosity. AB - Aqueous extraction of gum from flaxseed was optimized using Response Surface Methodology (RSM). In this study the effect of temperature (45-100 °C), pH (3-7) and water/seed ratio (4-24), on the dependent variables including: yield, protein and apparent viscosity of extracted gum were investigated. The results showed that temperature and pH are two major effective factors on yield and quality of extracted gum (purity and apparent viscosity), whereas water/seed ratio had minor effects. The optimized conditions of extraction were as follows: temperature 85- 90 oC pH 6.5- 7.0 and water/seed ratio 14. Apparent viscosities of extracted gums were determined and the effect of extraction conditions on rheological properties of flaxseed gum was investigated. LA eng UL http://jstnar.iut.ac.ir/article-1-309-en.html M3 ER -