Zuzarte Andrea, Mui Melody, Ordiz Maria Isabel, Weber Jacklyn, Ryan Kelsey, Manary Mark J
Department of Pediatrics, Washington University, St. Louis, MO 63110, USA.
Foods. 2020 Jun 1;9(6):706. doi: 10.3390/foods9060706.
Ready-to-use therapeutic food (RUTF) is a shelf-stable, low moisture, energy dense medicinal food composed of peanut butter, vegetable oils, milk powder, a multiple micronutrient premix and sugar. RUTF is used by millions of children annually to treat malnutrition. After mixing, RUTF is a semisolid covered with oil. To produce a homogenous RUTF, hydrogenated vegetable oils are incorporated in small quantities. This study utilized a benchtop methodology to test the effect of RUTF ingredients on oil separation. An acceptable oil separation was <4%. This method compared 15 different vegetable oil stabilizers with respect to oil separation. The dynamic progression of oil separation followed a Michaelis-Menten pattern, reaching a maximum after 60 days when stored at 30 °C. Hydrogenated vegetable oils with triglyceride or 50% monoglycerides reduced the oil separation to acceptable levels. The additive showing the largest reduction in oil separation was used in an industrial trial, where it also performed acceptably. In conclusion, fully hydrogenated soybean and rapeseed oil added as 1.5% controlled oil separation in RUTF.
即食治疗性食品（RUTF）是一种耐储存、低水分、能量密集型的药用食品，由花生酱、植物油、奶粉、多种微量营养素预混料和糖组成。每年有数百万儿童使用RUTF来治疗营养不良。混合后，RUTF是一种覆盖着油的半固体。为了生产出均匀的RUTF，会加入少量氢化植物油。本研究采用台式方法来测试RUTF成分对油分离的影响。可接受的油分离率<4%。该方法比较了15种不同植物油稳定剂在油分离方面的情况。油分离的动态过程遵循米氏模式，在30°C储存60天后达到最大值。含有甘油三酯或50%甘油单酯的氢化植物油将油分离降低到了可接受水平。在工业试验中使用了油分离降低幅度最大的添加剂，其表现也可接受。总之，添加1.5%的全氢化大豆油和菜籽油可控制RUTF中的油分离。
