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. 2011 May 12;10:45.
doi: 10.1186/1475-2891-10-45.

Effects of Açai (Euterpe Oleracea Mart.) Berry Preparation on Metabolic Parameters in a Healthy Overweight Population: A Pilot Study

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Effects of Açai (Euterpe Oleracea Mart.) Berry Preparation on Metabolic Parameters in a Healthy Overweight Population: A Pilot Study

Jay K Udani et al. Nutr J. .
Free PMC article


Background: The purpose of this study was to evaluate the effect of açai fruit pulp on risk factors for metabolic disorders in overweight subjects. The açaí palm (Euterpe oleracea Mart.), which is native to South America, produces a small, black-purple fruit which is edible. The fruit has recently become popular as a functional food due to its antioxidant potential. Although several studies have been conducted in vitro and with animals, little is known about the potential health benefits in humans aside from an increase in plasma anti-oxidant capacity. Metabolic syndrome is a condition which is defined by a cluster of risk factors for cardiovascular disease and/or type-2 diabetes. Preliminary studies indicate that a reduction in reactive oxygen species can assist in the normalization of the metabolic pathways involved in this syndrome.

Methods: This was an open label pilot study conducted with 10 overweight adults (BMI ≥ 25 kg/m² and ≤ 30 kg/m²) who took 100 g açai pulp twice daily for 1 month. The study endpoints included levels of fasting plasma glucose, insulin, cholesterol, triglycerides, exhaled (breath) nitric oxide metabolites (eNO) and plasma levels of high sensitivity C-reactive protein (hs-CRP). The response of blood glucose, blood pressure and eNO to a standardized meal was determined at baseline and following the 30 day treatment.

Results: Compared to baseline, there were reductions in fasting glucose and insulin levels following the 30 day treatment (both p < 0.02). There was also a reduction in total cholesterol (p = 0.03), as well as borderline significant reductions in LDL-cholesterol and the ratio of total cholesterol to HDL-cholesterol (both p = 0.051). Compared to baseline, treatment with açai ameliorated the post-prandial increase in plasma glucose following the standardized meal, measured as the area under the curve (p = 0.047). There was no effect on blood pressure, hs-CRP or eNO.

Conclusion: In this uncontrolled pilot study, consumption of açai fruit pulp reduced levels of selected markers of metabolic disease risk in overweight adults, indicating that further studies are warranted.


Figure 1
Figure 1
Post-prandial levels of plasma glucose were measured before and up to 120 minutes after consumption of a standardized meal. The determination of the percent change in glucose from baseline was made at the start of the study (baseline curve) and after administration of Sambuzon açai for 30 days (30-day curve). The trend lines for the baseline and 30 day measurements are depicted as two straight lines.

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    1. Alberti KG, Eckel RH, Grundy SM, Zimmet PZ, Cleeman JI, Donato KA. et al. Harmonizing the metabolic syndrome: a joint interim statement of the International Diabetes Federation Task Force on Epidemiology and Prevention; National Heart, Lung, and Blood Institute; American Heart Association; World Heart Federation; International Atherosclerosis Society; and International Association for the Study of Obesity. Circulation. 2009;120:1640–1645. doi: 10.1161/CIRCULATIONAHA.109.192644. - DOI - PubMed
    1. Grattagliano I, Palmieri VO, Portincasa P, Moschetta A, Palasciano G. Oxidative stress-induced risk factors associated with the metabolic syndrome: a unifying hypothesis. J Nutr Biochem. 2008;19:491–504. doi: 10.1016/j.jnutbio.2007.06.011. - DOI - PubMed
    1. Vincent HK, Taylor AG. Biomarkers and potential mechanisms of obesity-induced oxidant stress in humans. Int J Obes. 2006;30(3):400–418. doi: 10.1038/sj.ijo.0803177. - DOI - PubMed
    1. Roberts CK, Sindhu KK. Oxidative stress and metabolic syndrome. Life Sci. 2009;84:705–712. doi: 10.1016/j.lfs.2009.02.026. - DOI - PubMed
    1. Ando K, Fujita T. Metabolic syndrome and oxidative stress. Free Radic Biol Med. 2009;47:213–218. doi: 10.1016/j.freeradbiomed.2009.04.030. - DOI - PubMed

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