Morales E, Graham G G
Instituto de Investigacion Nutricional, Miraflores, Lima, Peru.
J Nutr. 1987 Dec;117(12):2116-20. doi: 10.1093/jn/117.12.2116.
To determine whether increasing proportions of cassava could be consumed and satisfactorily digested, eight recovering malnourished children (20-38 mo old) received 25, 50 and 75% of their diet energy as freeze-dried cassava flour during 9-d periods, with intervening casein control diets. Enough casein was added to all cassava diets to bring protein energy to 8% of the total. When compared to the control diet, the 25% diet had no significant effect on consumption time or measures of protein and energy digestion. With the 50% diet, fecal wet and dry weights were moderately higher than with the 25% diet (196 +/- 44 and 24 +/- 4 vs. 121 +/- 36 and 16 +/- 3 g/d, respectively), as were fecal energy (89 +/- 16 vs. 63 +/- 16 kcal/d) and calculated carbohydrate (11 +/- 2 vs. 5 +/- 1 g/d); apparent nitrogen absorption (mostly from casein) was slightly lower (79 +/- 5 vs. 83 +/- 6%) and consumption time slightly higher (5-25, median 10, vs. 4-18, median 6 min/feeding). When energy from cassava was increased to 75%, fecal weights (240 +/- 49 and 31 +/- 5 g/d), energy (124 +/- 27 kcal/d) and carbohydrate (16 +/- 4 g/d) were all higher than when cassava provided 50 or 25% of energy. Consumption required 8-34, median 17 min/feeding and apparent nitrogen absorption was 76 +/- 6% of intake.(ABSTRACT TRUNCATED AT 250 WORDS)
为了确定能否食用更高比例的木薯并使其得到充分消化，八名正在康复的营养不良儿童（20 - 38个月大）在为期9天的时间段内，分别摄入占其饮食能量25%、50%和75%的冻干木薯粉，期间穿插酪蛋白对照饮食。在所有木薯饮食中添加了足够的酪蛋白，以使蛋白质能量占总量的8%。与对照饮食相比，25%木薯粉饮食对进食时间或蛋白质及能量消化指标没有显著影响。对于50%木薯粉饮食，粪便湿重和干重略高于25%木薯粉饮食（分别为196±44和24±4克/天，而25%木薯粉饮食组为121±36和16±3克/天），粪便能量（89±16千卡/天对63±16千卡/天）和计算得出的碳水化合物（11±2克/天对5±1克/天）也是如此；表观氮吸收（主要来自酪蛋白）略低（79±5%对83±6%），进食时间略长（5 - 25分钟，中位数10分钟/次喂食，而对照饮食组为4 - 18分钟，中位数6分钟/次喂食）。当木薯能量增加到75%时，粪便重量（240±49和31±5克/天）、能量（124±27千卡/天）和碳水化合物（16±4克/天）均高于木薯提供50%或25%能量时的水平。进食需要8 - 34分钟，中位数17分钟/次喂食，表观氮吸收为摄入量的76±6%。（摘要截断于250字）
