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Weight Management

Short-term Effects of a Snack Including Dried Prunes on Energy Intake and Satiety in Normal-weight Individuals

Eating Behaviors 11 (2010)201-203. Farajian P, Katsagani M, Zampelas A.

This study investigated  the effect of a preload including dried prunes eaten as a snack prior to a meal compared to a preload of an isoenergetic and equal weighed bread product.  Researchers investigated short-term effect on satiety measured by subsequent ad lib meal intake and reduced appetite for dessert after llunch; and assessed satiety by visual analogue scales (VAS). 

Participants in the randomized within-subject crossover study included 45 healthy, normal-weight subjects. Results indicated that when subjects consumed the preload that included dried prunes, they consumed less of the dessert and had lower total energy intake at the meal. Subjects’ feeling of hunger, desire and motivation to eat as assessed by VAS, were lower at all time points between the snack and meal.  Macronutrient content of both preloads was similar. The authors suggest that the satiating power of prunes could be due to the fiber content.

Type of Snack Influences Satiety Responses in Adult Women

Appetite 54 (2010); 564-569. Furchner-Evanson Al, Petrisko Y, Howarth L, Memoseck T, and Kern M.

This study assessed the effect of different snack foods on satiety, plasma glucose and hormone responses in 19 adult overweight women. The test snacks included dried plums, low-fat cookes, white bread and water only on separate days. With the exception of water, the snacks provided 238 kcal and were similar in macronutrient content but differed in fiber and sugar content.  Subjects rated feeling of hunger using satiety index scales at 15 minute time points for 2 hours following initiation of intake. Blood samples were collected at baseline and at 15,30, 45,60, 90 and 120 minutes following intake.  At the end of the 2 hour test period, subjects were presented with a meal to be consumed until satisfied.

The satiety index AUC was greater for the dried plum trial versus the low-fat cooking trial (p<0.05). There was no difference in post-snack intake between the dried plum and cookie trials.  The dried plum trial elicited lower plasma glucose and insulin AUC than the low-fat cookie trial (p<0.05) and tended to promote a greater plasma gherlin AOC. Results suggest that eating dried plums as a snack suppresses hunger relative to a low-fat cookie as evidenced by lower glucose and/or satiety-regulating hormone concentrations.