Exotic fruit consumption and processing is increasing worldwide due to the improvement in preservation techniques, transportation, marketing systems and consumer awareness of health benefits. The ...entire body of tropical exotic fruits is rich in bioactive compounds, such as phenolic constituents, carotenoids, vitamins and dietary fiber. However, the fruit processing industry deals with the large percentage of byproducts, such as peels, seeds and unused flesh, generated in the different steps of the processing chains. In most cases, the wasted byproducts can present similar or even higher contents of bioactive compounds than the final produce does. The aim of this review is to promote the production and processing of exotic fruits highlighting the possibility of the integral exploitation of byproducts rich in bioactive compounds. Amongst the possible uses for these compounds that can be found in the food industry are as antioxidants (avoiding browning and lipid oxidation and as functional food ingredients), antimicrobials, flavoring, colorants and texturizer additives. Finally, the importance of extraction techniques of bioactive compounds designated as food additives is also included.
Twenty-four exotic Colombian fruits were evaluated for antioxidant activity and total soluble phenolics (TP) (edible part, seed and peel) and ascorbic acid content (edible part). The antioxidant ...activities were evaluated by ABTS (free radical-scavenging capacity) and FRAP (ferric reducing antioxidant power) methods. The ABTS, FRAP, TP and ascorbic acid values in the edible part were 3.25 to 175μM Trolox equiv/g fresh weight (FW), 6.29 to 144μM Trolox equiv/g FW, 15.7 to 1018mg gallic acid equiv/100g FW, and 0.53 to 257mg ascorbic acid/100g FW respectively. There were positive correlations between antioxidant activity (assessed by both ABTS and FRAP) and TP and ascorbic acid with the FRAP and ABTS methods. The edible part of banana passion fruits (P. tarminiana and P. mollisima) exhibited the highest values of antioxidant activity and total phenolics, while the highest level of ascorbic acid was recorded in the edible part of guava apple and cashew. The seeds with the highest values of antioxidant activity and total phenols were cashew, algarrobo, arazá and coastal sapote, while the peel of coastal sapote and algarrobo had the highest values of antioxidant activity and total phenolics. To the best of our knowledge, this paper reports the first evaluation of pulp, seed and skin of Colombian tropical fruits with a view to their knowledge utilization for the development of novel functional food products.
The main objective of this review was to describe the physicochemical and nutritional characteristics of twenty selected exotic fruits and the influence of their physiologically active compounds on ...human health, through scientifically proven information. The review presents the biologically active metabolites derived from exotic fruits (polyphenols, flavonoids, flavanols, tannins, ascorbic acid, anthocyanins, volatile compounds, minerals, and organic acids) and various analytical methods for their detection (elemental analysis, electrophoretic separation by SDS-polyacrylamide gel electrophoresis, and fast protein liquid and ion-exchange chromatography; GC–MS, HPLC/diode array detection (DAD), circular dichroism (CD), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR), ultraviolet spectroscopy, two- and three-dimensional fluorimetry (2D-FL) and (3D-FL), and antioxidant radical scavenging assays (DPPH, FRAP, CUPRAC, ABTS, and ORAC). The correlation between the polyphenols and other bioactive compounds, and their antioxidant activities was reported for different fruit extracts. During the last two decades our international scientific group investigated in vitro the physicochemical and nutritional characteristics of avocado, dragon fruit, durian, kiwifruit, mango, mangosteen, persimmon and snake fruit, and in vivo their influence on laboratory animals and humans. Supplementation of diets with exotic fruits positively affects plasma lipid profile, antioxidant activity and histological examination of aorta in rats fed cholesterol-containing diets.
The interaction between drugs and serum albumin plays an important role in the distribution and metabolism of drugs. The properties of polyphenol methanol extracts of exotic fruits showed the ability to quench serum albumin by forming the complexes similar with the ones between proteins and pure flavonoids. Our experimental data and a wide range of other investigations are included in this review. In conclusion, it is nessasary to promote a consumption of exotic fruits (a rich source of natural antioxidants) as a supplement to everyday human diet.
This work aims to optimize the process of extracting pigments from the peel of Amazonian fruits (bacupari, peach palm, and tucumã) using the enzyme pectinase. First, pigment extraction was carried ...out using different solvents (ethanol and acetone 80%, ethanol and acetone 50%, and water), temperatures (44, 40, 35, and 26 °C), and wavelengths (400, 450, and 490 nm). In the second stage, the best parameters found in the first stage were applied in a statistic with a response surface varying time (60, 120, and 180 min) and enzyme concentration (40, 80, and 120 U). The best results for extraction for bacupari and peach palm were acetone at 50% and 45 °C and ethanol at 50% and 35 °C for tucumã. In the second stage, the optimum point found was 1.5 h and 100 U concentration, and 2.5 h and 90 U concentration resulted in better extractions for bacupari, peach palm, and tucumã.
The prevalence and severity of obesity, type 2-diabetes, and the resultant metabolic syndrome are rapidly increasing. As successful preventive and therapeutic strategies for these life-threatening ...health ailments often come with adverse side effects, nutritional elements are widely used in many countries as preventive therapies to prevent or manage metabolic syndrome. Fruits are important dietary components, and contain various bioactive constituents. Many of these constituents have been proven to be useful to manage and treat various chronic diseases such as diabetes, obesity, cancer and cardiovascular diseases. Although exotic fruits are understudied throughout the world due to their limited regional presence, many studies reveal their potent ability to ameliorate metabolic derangements and the resultant conditions i.e. diabetes and obesity. The aim of this article is to review the role of exotic fruits and their constituents in the regulation of metabolic functions, which can beneficially alter diabetes and obesity pathophysiology.
► Exotic fruits are rich source of various bioactive components which have health beneficial activities. ► Obesity, diabetes and/or metabolic syndrome are becoming epidemic in world. ► Various exotic fruits have beneficial effects in prevention/ treatment of obesity, diabetes and metabolic syndrome. ► The whole extract and/or purified bioactive compounds in exotic fruits have various targets to ameliorate these health ailments.
Brazil is one of the countries that share a part of the Amazon region that has been called
Legal Amazon. Amazon forest offers the most extraordinary biodiversity of flora and
fauna on the planet and, ...on its surface, can cohabit 50% of the total existing living species.
According to some botanists, it would contain about 16-20% of the species that exist
today. This region has native fruits with antioxidants and antiproliferative activities
already reported by some authors. Consumption of these fruits would be an alternative
because they are good sources of nutritional constituents, such as minerals, fibre, vitamins,
water, and caloric content. However, the number of scientific studies related to their health
benefits is still low. Eugenia stipitata, Myrciaria dubia H. B. K. (Mcvough), Endopleura
uchi (Huber) Cuatrecasas, Eugenia punicifolia (Kunth) D.C and Garcinia madruno.
Among the main compounds reported are the most interesting groups: phenolic
compounds, unsaturated fatty acids, carotenoids, phytosterols, and tocopherols,
flavonoids, vitamin B, vitamin A, and vitamin C, and carotenoids. The main beneficial
effect of the Amazon fruits is the antioxidant effect; other functional properties as
medicinal, antimicrobial, antimutagenic, antigenotoxic, antigenotoxic, and antiinflammatory, antinociceptive, antidiabetic, and gastroprotective, are also reported.
Therefore, these fruits can be considered a valuable source of functional foods due to their
phytochemical compositions and their corresponding antioxidant activities.
•Digital image method to determine AA in a remote place such as the Brazilian Amazon.•Some Amazon native fruits were little studied such as Bacuri (Platonia insignis).•Very useful for small producer ...and family agriculture unable to afford analysis.•The method developed was economical, environmental-friendly and portable.•A reducing the sample volume by more than 83 times vs comparative method.
In this work, we propose a method that employed a smartphone to capture images obtained from a colorimetric spot test to determine ascorbic acid (AA) in Brazilian Amazon native and exotic fruits. The spot test reaction was based on reduction of Fe(III) by AA and further complexation with 1,10-phenanthroline. After optimization, the limit of detection was 8.5 × 10−7 mol L−1. Brazilian Amazon native fruits such as bacuri, cupuaçu, muruci, yellow mombin, as well as others as cashew, mango, orange and passion fruit, were analyzed. In order to determine the accuracy of this method, iodometric titration was used; results were in close agreement with a confidence level of 95% (paired t-test). Moreover, recoveries ranged from 87.1 to 116%. The method is economic, environmentally friendly, and portable, and might useful for small producers and family agriculture businesses unable to afford specialized laboratory analysis in the north region of Brazilian Amazon.
The aim of the study was to evaluate the conditions of fermentation pH and temperature and also the fermentation time of Lactobacillus casei in the cupuassu (tropical fruit native to the Brazilian ...Amazon) beverage. The sugars, organic acids, and antioxidant activity during the fermentation also were investigated. The sensory characteristics were also evaluated. Moreover, the effect of expectation on the acceptability of probiotic and symbiotic cupuassu beverages was rated under three conditions. The blind (consumers were informed that the samples were probiotic and symbiotic beverages and they tasted them); expected (only nutritional claims in short text were informed) and informed (consumers were asked to evaluate the product when they had nutritional information). The conditions for probiotic beverage production were initial pH5.8, the temperature of 30°C, and 18h of fermentation. L. casei had viability higher than 9.34LogCFU/mL with 18h of fermentation. The fructose was the most consumed sugar (84.76%), followed by sucrose (62.10%) and glucose (34.52%). The antioxidant activity increased during the fermentation. The organic acids present in the cupuassu (citric, ascorbic and quinic acids) also supported L. casei growth, being consumed during the fermentation improving the nutritional value of the beverage. The acceptance of the probiotic drink increased when the juice was presented to the informed tasters. Therefore, the nutrition claims were effective in increasing the acceptance. The probiotic cupuassu beverage was well accepted as an alternative functional food.
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•The cupuassu is a good substrate for probiotic growth, with viability higher than 8LogCFU/mL.•The probiotic cupuassu beverage has good sensory acceptance.•The nutritional information increases the acceptance of probiotic cupuassu beverage.•The fermentation with Lactobacillus casei provides increase of the antioxidant activity in cupuassu beverage.
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