Different postprandial acute response in healthy subjects to three strawberry jams varying in carbohydrate and antioxidant content: a randomized, crossover trial

Abstract

Methods: Sixteen healthy adults participated in a randomized, crossover, double-blind study with three arms, receiving 60g of three different strawberry jams. Blood samples were collected at fasting and at 30, 60, 90 and 120 min after its intake. Blood analyses were performed with validated procedures and satiety was estimated with visual analogue scale (VAS).Results: Blood glucose concentrations were maintained at normal values and without peaks within the 2 h after consumption of low-sugar jams. However, blood glucose and insulin were significantly higher at 30 and 60 min after high-sugar (HS) jam intake versus both low-sugar jams. Furthermore, HS jam produced more satisfaction at short time, but decreased as soon as blood glucose concentration began to decrease.Moreover, HS ingestion produced lower free fatty acid levels (p<0.05) throughout the trial with respect both the low-sugar jams However, no additional benefits on oxidative status (malondialdehyde, glutathione peroxidase, total antioxidant capacity, and uric acid), glucose, lipid and satiety variables were observed due to the inclusion of an antioxidant to low-sugar jam.Conclusions: This study reinforces the idea that products without added sugars are appropriate for the management of glycaemic alterations and provides further insight into the effect of natural antioxidants as a functional ingredient on oxidative status and related metabolic disturbances. Registered at www.clinicaltrials.gov as NCT01684332.

Oxidised LDL levels decreases after the consumption of ready-to-eat meals supplemented with cocoa extract within a hypocaloric diet

“…This antioxidant effect is probably related with the radical scavenging capacity of cocoa flavanols, which protects cells against oxidative stress and endothelial dysfunction (11). Other hypothesis could be that men were more oxidised than women, thus, the effect of cocoa flavanalos is more effective, given that some studies have not observed additional benefits after intake of antioxidants (29).…”

Select Polyphenol-Rich Berry Consumption to Defer or Deter Diabetes and Diabetes-Related Complications

“…Sugar-rich strawberry jam consumption also attenuated glycemic index and postprandial glucose level increases in diabetic human subjects [ 145 , 298 ]. Strawberry jam consumption showed favorable lipid and sugar metabolism results, even compared with low-sugar strawberry jam [ 146 ]. Strawberry consumption with HCD also controlled postprandial glucose levels, affected glucose and insulin responses, and GLP-1 expression.…”

Promising Health Benefits of the Strawberry: A Focus on Clinical Studies

“…On the contrary, no additional benefits were observed after the addition of natural antioxidants to a lowsugar jam. 97 In addition, freeze-dried strawberry powder effects were detected in females with three features of metabolic syndrome. 98 After short time supplementation, TC and LDLcholesterol levels significantly decreased compared to baseline, but no modification in inflammation markers, such as adiponectin and CPR, were observed.…”

“…In a crossover, randomized, double-blind study, the effects of an acute intake of strawberry jam on lipid profile, antioxidant status, postprandial glucose metabolism, and satiety were investigated . Compared to jam with added sugar, a more favoring postprandial blood glucose level was obtained with low-sugar jam.…”