Pub Date : 2024-05-13DOI: 10.26656/fr.2017.8(3).215
S. Udomrati, P. Tungtrakul, N. Lowithun, D. Thirathumthavorn
The concentration of starch is one of the main factors influencing the rheological characteristics of starch-based foods. The rheological behavior of sago starch at varied concentrations of 3, 5, 10, 20 and 30% (w/w) were investigated using small oscillatory temperature and frequency sweep measurements. All concentrations of sago starch expressed less solid-like behavior, with tan δ values of approximately 0.2. A flowable viscous paste of sago starch was generated at low concentrations (3 and 5% (w/w)). The gel network formation of sago starch initially occurred at a critical concentration of 10% (w/w). Further increases in the concentration to 20 and 30% (w/w), stronger gel network formation was occurred. In addition, the tan δ values for concentrations of 20 and 30% (w/ w) were approximately 0.2 with elastic and soft gel characteristics. A positive power law correlation between G' and sago starch concentration was found, with a coefficient of determination (R2 ) value of 0.99. The gelatinized sago starch was unstable as a frequency sweep was applied, indicating that it may be less stable during storage or processing.
{"title":"The effect of concentration on rheological properties of sago (Metroxylon sagu)\u0000starch","authors":"S. Udomrati, P. Tungtrakul, N. Lowithun, D. Thirathumthavorn","doi":"10.26656/fr.2017.8(3).215","DOIUrl":"https://doi.org/10.26656/fr.2017.8(3).215","url":null,"abstract":"The concentration of starch is one of the main factors influencing the rheological\u0000characteristics of starch-based foods. The rheological behavior of sago starch at varied\u0000concentrations of 3, 5, 10, 20 and 30% (w/w) were investigated using small oscillatory\u0000temperature and frequency sweep measurements. All concentrations of sago starch\u0000expressed less solid-like behavior, with tan δ values of approximately 0.2. A flowable\u0000viscous paste of sago starch was generated at low concentrations (3 and 5% (w/w)). The\u0000gel network formation of sago starch initially occurred at a critical concentration of 10%\u0000(w/w). Further increases in the concentration to 20 and 30% (w/w), stronger gel network\u0000formation was occurred. In addition, the tan δ values for concentrations of 20 and 30% (w/\u0000w) were approximately 0.2 with elastic and soft gel characteristics. A positive power law\u0000correlation between G' and sago starch concentration was found, with a coefficient of\u0000determination (R2\u0000) value of 0.99. The gelatinized sago starch was unstable as a frequency\u0000sweep was applied, indicating that it may be less stable during storage or processing.","PeriodicalId":502485,"journal":{"name":"Food Research","volume":"114 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140985708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}