Department of Food Engineering, Federal University of Ceara, 60356-000 Fortaleza, CE, Brazil.
Embrapa Tropical Agroindustry, Dra Sara Mesquita Street, 2270, 60511-110 Fortaleza, CE, Brazil.
Food Res Int. 2017 Oct;100(Pt 1):460-467. doi: 10.1016/j.foodres.2017.07.035. Epub 2017 Jul 18.
Syrup obtained from yacon roots could be well positioned as a nutritional product due to its high fructooligosaccharides (FOS) content. Considering this, we examined the potential food applications of yacon syrup, using the focal group methodology, and its sensorial acceptability when incorporated in yogurt. The beneficial effects of the consumption of yacon syrup were studied over a 2-week period in a double-blind placebo-controlled experiment (namely Test A) and other consistent of only one day of yacon syrup consumption (namely Test B) were also evaluated. The doses of yacon syrup for both experiments were 8.74g of FOS/day. Energy intake, hunger, satiety, fullness and prospective food consumption were assessed with analogue scales at the end of each test. The results indicate that the yogurt was the food most suggested by the focus group, and the average of the scores given to the attributes when the yacon syrup was incorporated into a yogurt were: 7.78 for appearance; 7.72 for aroma; 7.02 for flavor and 6.96 for overall acceptability, corresponding to "like very much" and "like moderately". Furthermore, the results indicate that yacon syrup has a positive effect on appetite and its effect was dependent on gender and period of intervention, being statistically significant (P<0.05) in women, after 2-week period. These findings suggested that increasing FOS intake could help to increase satiety, and consequently, be helpful in the management of type 2-diabetes or control of the current high prevalence of overweight or obesity.
从菊芋根获得的糖浆由于其高果寡糖（FOS）含量，可以很好地定位为营养产品。有鉴于此，我们使用焦点小组方法研究了菊芋糖浆的潜在食品应用及其在酸奶中的感官可接受性。在一项双盲安慰剂对照试验（即测试 A）中，研究了在两周内食用菊芋糖浆的有益效果，并且还评估了仅在一天内食用菊芋糖浆的一致性（即测试 B）。两个实验中菊芋糖浆的剂量均为 8.74g 的 FOS/天。在每次测试结束时，使用模拟量表评估能量摄入、饥饿感、饱腹感、饱腹感和预期食物摄入量。结果表明，酸奶是焦点小组最推荐的食物，当菊芋糖浆加入酸奶中时，各个属性的平均得分分别为：外观 7.78；香气 7.72；味道 7.02；整体可接受性 6.96，对应于“非常喜欢”和“喜欢中等程度”。此外，结果表明菊芋糖浆对食欲有积极影响，其作用取决于性别和干预期，在女性和 2 周后具有统计学意义（P<0.05）。这些发现表明，增加 FOS 的摄入量可以帮助增加饱腹感，从而有助于 2 型糖尿病的管理或控制当前超重或肥胖的高发率。
