Açai fruit has been studied for its antioxidant properties, with positive feedback against many diseases, including cancer. Although açai seeds are not edible, their composition has been studied in order to find new applications and reduce garbage generation. This study aimed to evaluate the cytotoxic effects and impacts on the cell cycle and apoptosis of açai seed extract (ASE) on human lung carcinoma cell line (A549). Antioxidant activity of açai seed extract (ASE) was measured by DPPH assay, Trolox Equivalent Antioxidant Capacity (ABTS/TEAC), Ferric Reducing Ability (FRAP) and Oxygen radical absorbance capacity (ORAC) assays. Human lung carcinoma cell viability (A549) was monitored by MTT assay method and the effects on cell cycle and apoptosis were measured by flow cytometry. The results indicate high antioxidant activity in ASE and high values of total phenolic compounds (37.08 ± 8.56 g gallic acid/100 g). The MTT assay showed a maximum decrease (72.07%) in the viability of A549 cells after 48 h treatment with ASE (200 µg/mL). Flow cytometer analysis revealed that ASE increased the percentage of cells in G0/G1 phase and promoted a high increase of apoptotic cells when compared to the untreated cells. The present study suggests that ASE has a high antioxidant capacity and may have a protective effect against lung cancer.

Brazil has great biodiversity, and the Amazon biome stands out for a variety of native fruits with high economic and nutritional potential. Murici (Byrsonima crassifolia) and taperebá (Spondias mombin) are sources of vitamins, minerals, and phytochemicals with potential health benefits. Because of the bioactive potential of these Brazilian fruits, this review aims to gather the most current existing knowledge about their botanical, nutritional, and phytochemical properties, because the presence of several bioactive compounds may bring promising strategies to the prevention and treatment of several diseases. The search was conducted of the LILACS, MEDLINE, PubMed, and Science Direct databases, considering articles published between 2010 and 2023. The compiled results showed that these fruits, their leaves, and seeds have great antioxidant activity and are a good source of phytochemicals, especially phenolic compounds. In vitro and in vivo studies indicate that these bioactive compounds have several health benefits related to the prevention or treatment of diseases, including antioxidant effects; anti-inflammatory effects; and antidiabetic, antidepressant, neuroprotective, antiproliferative, anticancer, hypolipemic, cardioprotective, gastroprotective, hepatoprotective, and nephroprotective effects, and they are particularly related to the reduction of damage from oxidative stress. This review highlights the potential of these fruits as functional foods and for therapeutic purposes. However, it is recommended to conduct more studies on the identification and quantification of phytochemicals present in these fruits and studies in humans to better understand the mechanisms of action related to their effects and to understand the interaction of these compounds with the human body, as well as to prove the safety and efficacy of these compounds on health.

This study evaluates the effects of supplementation of murici (Byrsonima crassifolia) and taperebá (Spondias mombin) pulp extracts on dietary intake, body composition, biochemical parameters, and markers of oxidative stress. Two experiments were conducted with a total of 80 healthy male Wistar rats and a 30-day supplementation. In the first experiment, animals were divided into control (C) group, murici group 50 mg/(kg⸱day) (50Mu), murici group 100 mg/(kg⸱day) (100Mu), and murici group 200 mg/(kg⸱day) (200Mu). In the second experiment, animals were divided into C group, taperebá group 50 mg/(kg⸱day) (50Tap), taperebá group 100 mg/(kg⸱day) (100Tap), and taperebá group 200 mg/(kg⸱day) (200Tap). Results showed lower feed intake in 50Mu, 100Mu, and 100Tap groups (13%, 12%, and 10%, respectively, P < .05) and lower body fat in 200Mu, 100Tap, and 200Tap groups (16.0%, 29.1%, and 27.1%, respectively, P < .05). Only the 100Tap group showed reduced adipose tissue content (30.4%; P < .05). Increased plasma antioxidant capacity was observed at all doses for both fruits. Taperebá supplementation reduced ferrous oxidation–xylenol orange levels (50Tap: 8.4%, 100Tap: 16.1%, 200Tap: 24.3%; P < .05) and increased thiol levels (50Tap: 39%, 100Tap: 31%; P < .05). Serum thiobarbituric acid reactive substances levels were reduced in all groups receiving taperebá (50Tap: 77.7%, 100Tap: 73.1%, 200Tap: 73.8%; P < .05) and murici (50Mu: 44.5%, 100Mu: 34%, 200Mu: 43%; P < .05). Therefore, it is suggested that the inclusion of these fruits in the diet can contribute to health maintenance and disease prevention, through their effects on controlling food intake, improving body composition, and in combating oxidative stress.

Fruit consumption favors energy balance, ensures essential nutrients, and provides bioactive compounds with antioxidant and anti-inflammatory activities capable of preventing and treating noncommunicable diseases. Tremendous Brazilian biodiversity favors countless fruit and vegetable crops, including exotic fruits. This study aimed to describe the nutritional characteristics of murici and bacuri and their effects on oxidative stress and inflammation. The murici lyophilized extract (MLE) and bacuri lyophilized extract (BLE) were evaluated for their antioxidant activity and total phenolic compounds content. Healthy female Wistar rats were divided into control and supplemented groups (50, 100, and 250 mg/kg body weight) for each fruit, with a 14-day supplementation. Parameters of oxidative damage and antioxidant system in plasma and inflammatory biomarkers in the kidney and liver tissues were evaluated. Murici has carotenoids as the main bioactive compound, whereas bacuri is a source of polyphenols, with relevant antioxidant activity for human health. Treatment with MLE in healthy rats resulted in increased plasma antioxidant capacity measured by DPPH assay, reduced plasma levels of lipid peroxidation (TBARS) and carbonylated proteins, and lower TNF-α production in the kidney and liver. BLE supplementation reduced plasma lipid peroxidation levels and led to lower activity of IL-1 β, IL-6, and TNF-α in supplemented animals’ kidneys. Both fruits showed positive antioxidant and anti-inflammatory effects against oxidative stress and inflammation in an in vivo model. The results point to new antioxidant and anti-inflammatory resources to be studied.

A balanced diet is essential in obesity control. Fruits stand out for the presence of various bioactive compounds, which represent promising tools in the prevention and treatment of various pathologies. In obesity, fruits phytochemicals present are related to different important mechanisms of action, such as antioxidant and anti-inflammatory activity. This narrative review aims to understand the main physiological alterations of obesity and the effects of bioactive compounds in fruits on them, identifying the best-known substances and their likely mechanisms of action on the main biomarkers. The research was carried out in the Google Scholar, Scielo, Pubmed and Science Direct databases, considering reviews published since 2015 and experimental studies since 2010. Inflammatory cytokines and adipokines are considered primary biomarkers of obesity, and are currently also considered the insulin resistance, lower glucose tolerance, oxidative stress, gut microbiota, nutrients and microRNAs. Three groups of fruits stood out for their effects: Citrus fruits, berries and tropical fruits, sources mainly of flavonoids, anthocyanins and carotenoids. Experimental results indicate that fruits and their compounds can help in the prevention and treatment of obesity through the regulation of inflammatory cytokines and adipokines involved in the mechanisms of this disease, as well as antioxidant properties and modulation of lipogenesis. More clinical studies are needed to understand the biochemical mechanisms involved, in order to favor not only the production of specific supplements but also the best clinical dietary prescription.