The aim of the study was to evaluate commercial sugarcane products from southern Brazil, including refined, crystal, demerara, brown sugars, rapadura and molasses. The physicochemical parameters ...(ash, pH, color, moisture); nutritional parameters (sugar composition and minerals) were assessed; bioactive (phenolic compounds, flavonoids and carotenoids) and the antioxidant activity were also evaluated. Variation in the physicochemical parameters was observed according to the type of sample and depending on the sample's processing degree. The sugar composition of the samples varied from 0.13 to 20.14% of fructose, 1.13–29.78% of glucose and 29.47–98.85% of sucrose. The content of phenolic compounds ranged from 3.01 to 279.56 (mg EAG 100 g
−1
), flavonoids from 0.63 to 28.33 (mg EQ 100 g
−1
) and carotenoids from 0.18 to 4.37 (µg g
−1
of β-carotene). The antioxidant activities in the samples showed variations both for DPPH (9.99–275.33 µM Trolox g
−1
) and ABTS (14.03–1263.46 µM Trolox g
−1
) methods. The highest bioactive content, minerals and antioxidant capacity were observed in the brown sugars, rapadura and molasses samples, confirming the loss of these compounds in more processed sugars.
ABSTRACT The aim of the study was to characterize the bioactive compounds present in sugarcane syrup, analyze the color, to evaluate the antioxidant activity as well as the stability of the bioactive ...compounds during a 60-day storage under freezing conditions. According to the CONAB (2021), 654.5 million tons of sugarcane were grown in Brazil in the 2020/2021 harvest, of which almost 50% were used for sugar production. The state has high humidity, winters with low temperatures and large amounts of rain throughout the year. ...there is a need to develop varieties with improved genetic characteristics, such as RB987935, RB867515, RB925345, RB935744 and RB92579. In this context, the main purpose of this study was quantify the bioactive compounds sugarcane juice from different varieties grown in the southern region of Rio Grande do Sul and to evaluate their color, antioxidant activity and the stability of these bioactive compounds during storage under freezing conditions.
ABSTRACT Physalis pubescens L. is a UFP (unconventional food plant) that produces high quality fruits; however, in Rio Grande do Sul it is still considered a rare species. There is only few ...information regarding the characterization of these fruits in Brazil, and the main reports of this species are mainly focused on the pharmacology and agronomic conditions of the plant. The aim of this study was to analyze the physical and chemical composition, including bioactive compounds, of Physalis fruits obtained from a spontaneous culture of the southern region of Rio grande do sul. Soluble solids, total titratable acidity, vitamin C, moisture, ash, crude fiber, crude protein, lipids, carbohydrates, total caloric value, carotenoids, phenolic compounds, flavonoids and phenolic acids from pulp and seed were evaluated. It was observed that the fruit has acid characteristics (4.8%), in addition to a considerable presence of lipids (1.96%) and carbohydrates (10.85%), containing high content of carotenoids (171.36 µg β-carotene.g-1), phenolic compounds (142.83 mg.EAG.100g-1) and phenolic acids (38.55 mg EAC.100g-1). It was possible to observe that the fruits of Physalis pubescens are nutritious, presenting light acidity and they are a rich source of bioactive compounds.
The antioxidant, antibacterial, and antitumor effects of hydroalcoholic extracts of the pulp and seeds of Physalis pubescens L. were explored. The components of the extracts were identified and ...quantified by high-performance liquid chromatography (HPLC). The antioxidant activity was determined by 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and ferric reducing antioxidant power (FRAP) analyses. The antibacterial activity against Staphylococcus aureus, Listeria monocytogenes, and Escherichia coli was evaluated by using a diffusion disc. Cytotoxicological assays that were performed using glioblastoma cell lines from C6 and GL26 mice and murine melanoma cell lines (B16F10), in addition to primary astrocyte culture. Fourteen phenolic compounds were identified, where epicatechin was the dominant. High antioxidant activity of both the pulp (2210.46 μM of Trolox/g) and seeds (2807.74 μM trolox/g) was observed by the DPPH method. The pulp and seed extracts showed moderately active inhibition halos in the presence of Gram-positive bacteria. Both extracts were able to reduce the percentage cell viability.
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•There is a predominance of epicatechin, ellagic acid and myricetin in the fruits of Physalis pubescens L.•The antioxidant activity was best represented by the DPPH method for the fruits of Physalis pubescens L.•The antibacterial activity of the hydroalcoholicextracts P and S were efficient against gram positive bacteria.•Cytotoxic activity was significant for extract seed (S).
The main novelty of the work was to carry out a full review of scientific data on recent techniques for the protection and application of carotenoids in food matrices, especially focused on the use ...of nanotechnologies. Carotenoids are pigments derived from plants and microorganisms that play a very important role in biological systems. They have many health benefits that attract the interest of researchers and consumers; however, they are chemically unstable, which restricts their application in food and pharmaceutical products. Nanotechnologies related to encapsulations and emulsions can be used to protect carotenoids and maintain their original characteristics during processing, storage and digestion, as well as improving their physicochemical properties and increasing the positive effects of their consumption. There are several techniques that can be used for this purpose; however, this study aimed to inform in a brief and compact way the existing techniques. It was found that studies on delivery systems for the use of carotenoids in foods are quite recent, with an emphasis on their application in yogurts. The need for more research is highlighted, expanding their application in different food matrices.
•Carotenoids are important pigments for health; however, they are unstable, which restricts their application in products.•The encapsulation and emulsions of carotenoids stand out, for keeping the compounds active for long periods of time.•Studies with carotenoids in foods, through delivery systems, are still recent, with greater application in yogurts.
Soluble solids, total titratable acidity, vitamin C, moisture, ash, crude fiber, crude protein, lipids, carbohydrates, total caloric value, carotenoids, phenolic compounds, flavonoids and phenolic ...acids from pulp and seed were evaluated. The fruits' physicochemical characteristics allow us to evaluate the degree of ripeness, to determine the harvest point, to define forms of postharvest handling and appropriate packaging, and to define storage and processing conditions to obtain its derivatives (Chitarra & Chitarra, 2005). According to Brazilian Legislation (2003), the total caloric value was calculated by adding the calories generated by the major nutrients metabolism, and the results were expressed in Kcal.g-1. Ascorbic acid (vitamin C) content was determined using the Lorenz-Steves titration method described by Zambiazi (2010).
Physalis pubescens L. has exotic fruit, native to the Americas, with potential to be widely used for consumption. This plant has yellow fruits accompanied by chalices. The aerial parts are used in ...traditional medicine due to its preventive and curative effect. Its fruits are aromatic and mildly acidic, besides containing compounds that contribute to the functional capacity of the fruit. Due to the health benefits, the use of this plant has generated a great commercial interest. Purpose of this review was to compile information on the functional properties of Physalis pubescens, as well as to explore information on some of the major species of Physalis.
O objetivo deste estudo foi fazer um reconhecimento dos saberes etnobotânicos das comunidades tradicionais de plantas alimentícias não convencionais (Panc), bem como uma caracterização de seus ...compostos bioativos, para garantir a segurança nutricional e a segurança alimentar. As análises foram feitas para determinar os compostos fenólicos, carotenoides e atividade antioxidante das diferentes espécies de Panc encontradas nas Unidades de Produção Familiar (UPF), das famílias participantes da Associação Escola Família Agrícola da Região Sul (Aefasul). Os resultados da pesquisa indicaram que 62% das famílias entrevistadas já tinham ouvido falar sobre Pancs e, entre as indicações, 355 foram apontadas como sendo eventualmente consumidas pelas famílias entrevistadas, dentre as quais se destacaram as espécies: Ananas bracteatus, Butia odorata, Eugenia uniflora, Psidium cattleianum e Syagrus romanzoffiana. Em relação aos compostos bioativos encontrados, destaca-se o teor de carotenoides, com 119.840 μg β-caroteno g-1 nas folhas de Tropaeolum majus, e os teores de compostos fenólicos, com equivalente em ácido gálico (EAG) de 186,02 g 100 g-1 em suas flores. Os compostos bioativos encontrados nas Pancs levam-nos a inferir elas apresentam grande potencial nutricional e econômico. Todavia, são necessárias mais pesquisas, assim como diferentes métodos de análise, para confirmar resultados e fornecer maior evidência científica sobre essas propriedades e garantir a segurança nutricional e alimentar.
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