Effects of Some Hydrocolloids and Surfactant on the Rheological Properties of Hard Wheat Flour Dough by Using Response Surface Methodology (in English)

Year 2011, Volume: 36 Issue: 2, 77 - 82, 01.04.2011

Başak Sungur Recai Ercan

Abstract

The aim of this study was to determine the effect of three hydrocolloids (guar gum, carboxymethylcellulose (CMC) and locust bean gum (LBG)) and diacetyl tartaric acid ester of mono-diglycerides (DATEM) on the rheological properties of hard wheat flour dough by using response surface methodology. Each independent variable was tested at five levels: guar gum, CMC and LBG were 0.00%, 50%, 1.00%, 1.50% and 2.0% (w/w, on weight of flour basis), and DATEM was 0.00%, 0.25%, 0.50%, 0.75% and 1.00% (w/w, on weight of flour basis). The results showed that the guar gum was the most effective additive on water absorption values and the maximum resistance of the dough to stretching out. The best results among the combinations were generally obtained with CMC and DATEM on the maximum resistance of the dough to stretching out. Anahtar kelimeler: Hydrocolloids, rheological properties, surfactants, response surface methodology (RSM).

Keywords

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Yüzey Tepki Metodu Kullanılarak Bazı Hidrokolloidler ve Yüzey Aktif Maddenin Sert Buğday Unu Hamurunun Reolojik Özellikleri Üzerine Etkileri (İngilizce)

Abstract

Bu çalışmanın amacı üç hidrokolloidin (guar gam, karboksimetilselüloz (CMC) ve keçiboynuzu gamı LBG) ile mono-digliseridlerin diasetil tartarik asit esterlerinin (DATEM) sert buğday unu hamurunun reolojik özellikleri üzerine etkilerini yüzey tepki metodu (RSM) kullanarak belirlemektir. Her bir bağımsız değişken 5 farklı oranda test edilmiştir; guar gam, CMC ve LBG, %0.00, %0.50, %1.00, %1.50 ve %2.0 (w/w un ağırlığı üzerinden), DATEM, %0.00, %.0.25, %0.50, %0.75 ve %1.00 (w/w un ağırlığı üzerinden). Elde edilen sonuçlara göre hamurun uzamaya karşı gösterdiği maksimum direnç ile su absorpsiyonu değerleri üzerine en önemli etkiyi guar gam göstermiştir. Kombinasyonlar arasında hamurun uzamaya karşı gösterdi¤i direnç üzerine genel olarak en olumlu etkiyi CMC ve DATEM göstermiştir.

Keywords

Hidrokolloidler, reolojik özellikler, yüzey aktif maddeler, yüzey tepki metodu (RSM).

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