title: Effect of emulsifier and viscosity on oil separation in ready-to-use therapeutic food.
abstract: Oil separation is a common food quality problem in ready-to-use therapeutic food (RUTF), the shelf-stable, peanut-based food used to treat severe acute malnutrition in home settings. Our objective was to evaluate the effect on oil separation of three emulsifiers at different concentrations in RUTF. We also assessed two viscosity measurements. A scale-up experiment was carried out during full-scale RUTF production in Malawi. Results indicate that viscosity is inversely correlated with oil separation, and that the Bostwick consistometer is a simple, useful tool to predict viscosity. Oil separation in RUTF may be mitigated by use of an emulsifier, which increases the viscosity of the product. The emulsifier that reduced oil separation to the greatest extent was a mixture of high and low monoacylglycerol (MAG) emulsifiers. Proper raw material quality control to achieve consistent ingredient fat level and fat type, and production temperature and shearing control should be a focus in RUTF manufacturing.
authors: a Department of Pediatrics , Washington University , St. Louis , MO , USA .
authors: M Isabel
authors: MI
authors: Ordiz
authors: a Department of Pediatrics , Washington University , St. Louis , MO , USA .
authors: Kelsey N
authors: KN
authors: Ryan
authors: a Department of Pediatrics , Washington University , St. Louis , MO , USA .
authors: Elizabeth D
authors: ED
authors: Cimo
authors: b Project Peanut Butter , Lunzu , Malawi .
authors: Margo E
authors: ME
authors: Stoner
authors: b Project Peanut Butter , Lunzu , Malawi .
authors: Margaret E
authors: ME
authors: Loehnig
authors: a Department of Pediatrics , Washington University , St. Louis , MO , USA .|b Project Peanut Butter , Lunzu , Malawi .|c Department of Pediatrics , Baylor College of Medicine , Houston , TX , USA , and.|d Department of Community Health , College of Medicine , Blantyre , Malawi.
authors: Mark J
authors: MJ
authors: Manary
mesh_terms: D002648:Child; D015362:Child Nutrition Disorders / Q000178:diet therapy / Q000517:prevention & control; D019587:Dietary Supplements; D045703:Emulsifying Agents / Q000737:chemistry / Q000592:standards; D005504:Food Analysis; D063427:Food Quality; D005527:Food, Fortified / Q000032:analysis / Q000592:standards*; D006801:Humans; D010938:Plant Oils / Q000737:chemistry*; D014783:Viscosity
chemical_list: D045703:Emulsifying Agents; D010938:Plant Oils
keywords: Bostwick consistometer; Brookfield viscometer; diacylglycerol; monoacylglycerol