Enzyme-treated orange pomace alters acute glycemic response to orange juice

Huang, Y., Park, E., Replogle, R., Boileau, T., . . . Edirisinghe, I. (2019). Enzyme-treated orange pomace alters acute glycemic response to orange juice. Nutrition and Diabetes, 9, 24. doi:10.1038/s41387-019-0091-z

 

Abstract:

The goal of the present study was to determine the impact of the addition of enzyme-treated orange pomace to orange juice on postprandial glycemic response. Ten healthy subjects (aged 27.9±7.7 years, body mass index 22.1±1.1kgm−2) participated in a randomized, 2-arm, cross-over clinical trial to test the glycemic response to 100% orange juice (OJ) or 100% orange juice with 5g of enzyme-treated orange pomace fiber (OPF). Blood samples were collected and glucose and insulin concentrations were measured at fasting (0min) and every 15min for 2h after consuming the study juice products. Analysis of the 2h incremental area under the curve (iAUC0–2h) indicated a significant reduction in blood glucose after ingesting the OPF juice compared to the OJ, p=0.02. Peak glucose concentrations were also lowered after the OPF juice compared to the OJ, p<0.05. No significant difference was observed in insulin responses between treatments, p>0.05. Overall, this study demonstrated that adding 5g of fiber from orange pomace into a serving of OJ attenuated the postprandial glucose response.