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  • Title: Riceberry rice beverage decreases postprandial glycemic response, inflammatory markers and antioxidant status induced by a high-carbohydrate and moderate-fat meal in overweight and obese men.
    Author: Anuyahong T, Chusak C, Adisakwattana S.
    Journal: Food Funct; 2022 Jan 24; 13(2):834-845. PubMed ID: 34988564.
    Abstract:
    Recent clinical studies support the beneficial role of riceberry rice and its food products in controlling the glycemic response in healthy subjects. The aim of the current work was to determine the effects of riceberry rice beverage (RRB) on postprandial glycemic, insulin and triglyceride responses, inflammatory biomarkers, and antioxidant status as well as appetite sensation following a high-carbohydrate and moderate-fat (HCMF) meal in overweight/obese subjects. Thirteen participants, overweight and obese men (age = 24.46 ± 0.90 years and BMI = 25.92 ± 0.69 kg m-2), completed a randomized, crossover intervention study. They consumed an HCMF meal with or without RRB (2 g of riceberry rice extract powder/400 ml). Blood samples and appetite sensation were measured at the fasting state and up to 6 h after meal consumption. The ingestion of the HCMF meal accompanied by RRB had a lower incremental area under the curve (iAUC) for postprandial plasma glucose, insulin, malondialdehyde (MDA) and serum triglyceride concentrations when compared to the control. A significant increase in the ferric reducing ability of plasma (FRAP), Trolox equivalent antioxidant capacity (TEAC), and thiol level, all measures of antioxidant capacity, was also observed in the participants who consumed the HCMF meal accompanied by RRB. The postprandial level of pro-inflammatory cytokines (IL-1β, IL-6 and TNF-α) significantly increased at 3 h and 6 h after the HCMF meal intake when compared to the fasting state. Interestingly, these values were significantly decreased upon consumption of RRB. However, there were no statistically significant differences in the rating scores of hunger, fullness, desire to eat, and satiety among the tested meals. In conclusion, RRB intake prevented HCMF meal-induced postprandial glycemic, lipemic, and pro-inflammatory responses and improved plasma antioxidant capacity in overweight and obese participants.
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