Abstract The objective of this study was to evaluate the influence of different packaging on the storage of milk candy in tablets by means of moisture, ash, lipid, protein, colour and texture profile analysis. The were used: Expanded polystyrene wrapped with polyvinyl chloride film (PVC), polypropylene (PP) and low-density polyethylene (PEBD) bags. The experiment was conducted in a completely randomised design, and the evaluations were carried out at 0, 45, 90, 135 and 180 days. All treatments presented darkening of the milk candy; however, those candies packaged in PVC presented a light and yellow colour (L = 39.84, b* = 20.06), while those in PEBD presented a dark colour (L = 36.75). According to the conditions studied, PVC packaging is not recommended for the storage of milk candy in tablets due to the intense changes in the physical-chemical characteristics, texture and colour. In contrast, PVC, PP and PEBD packages are efficient materials for maintaining the initial properties of this type of candy.

Abstract The objective was to elaborate gluten-free bread, using different hydrocolloids and to verify the effect of substitution of rice flour for sweet potato flour (SPF) on the technological and sensory quality of bread. Better results were observed with the use of 2% carboxymethylcellulose (CMC), without significant difference (p > 0.05) in the sensory evaluation of the samples containing hydrocolloids. Lower specific volume and higher hardness was observed with the addition of CMC and higher levels of SPF. The microbiological evaluation of bread made from the substitution of 25% rice flour for SPF allowed to establish shelf life of 7 days, with an acceptability index of 80.3%, which is considered high because it is a new product. Regarding the purchase intention, only 2% of assessors would certainly not buy the product, showing that the addition of hydrocolloids and SPF to gluten-free bread formulations may be an effective alternative for the gluten-intolerant public.

ABSTRACT The bioactive compounds and in vitro antioxidant activity of jabuticaba fruits var. Pingo de mel were evaluated during their physiological development. The fruits were harvested ten days after anthesis until maturity, at intervals of four days between collections. The period between anthesis and maturity was 34 days. Higher phenolics levels, hydrolysed tannins, and antioxidant activity were observed in 10 days after anthesis, while vitamin C contents were higher throughout the ripening process. At the end of development (34 days), higher levels of vitamin C and lower hydrolysed tannin were observed. It is known that the lower the hydrolysed tannins, the better the sensory characteristics of the fruit, and considering the benefits of vitamin C, it is necessary to harvest the jabuticaba fruits var. Pingo de mel in 34 days after anthesis for better use of these compounds.

RESUMEN La propagación de la palma Syagrus romanzoffiano se realiza sexualmente a través de semillas, lo que hace que el proceso de obtención de nuevas plantas sea lento y difícil, especialmente a gran escala. Además, la germinación de la semilla es lenta, desigual y susceptible a la degradación y pérdida de vigor debido al deterioro del embrión, incluso en condiciones de laboratorio. Debido a la falta de información sobre métodos eficientes de despulpado de frutos de palma reina, con el presente estudio se buscó establecer una metodología de despulpado menos agresiva para el embrión, manteniendo la calidad de la emergencia de las plántulas. El experimento se llevó a cabo en Goiânia, Brasil, utilizando frutas de ocho plantas de stock sometidas a tres tratamientos de pre-despulpado (control, fermentación y secado) y dos métodos de despulpado (despulpado industrial y mezcladora de cemento más grava). Después de los diferentes procesos previos a la siembra, se evaluaron la masa de pirenos frescos y secos, la pulpa restante adherida al pireno y la emergencia de plántulas. Se observó que el despulpado industrial eliminó un promedio de 45% más de fibra del pireno que la mezcladora de cemento. Sin embargo, estas metodologías no presentaron diferencias en la emergencia de plantas, que se vio afectada solo por el tratamiento pre-despulpado, con superioridad en el uso de frutas frescas. Por lo tanto, se concluye que el despulpado industrial es más eficiente para la eliminación de pulpa y fibras en comparación con el mezclador de cemento. El método de despulpado no afectó significativamente la masa de pirenos. Se observaron valores de emergencia de plántulas más altos para las frutas frescas despulpadas y sembradas inmediatamente. La fermentación y la deshidratación parcial de la pulpa ejercen una influencia negativa en la emergencia de las plántulas.

ABSTRACT The propagation of the palm Syagrus romanzoffiano is done sexually with seeds, making the process of obtaining new plants slow and difficult, especially on large scales. In addition, seed germination is slow, uneven and susceptible to degradation and loss of vigor because of embryo deterioration, even under laboratory conditions. As a result of the lack of information on efficient depulping methods for queen palm fruits, the present study aimed to establish a depulping methodology that is less aggressive to embryos, maintaining emergence quality. This experiment was carried out in Goiânia, Brazil, using fruits from eight stock plants submitted to three pre-depulping treatments (control, fermentation and drying) and two depulping methods (industrial depulping and concrete-mixer with the addition of gravel). After the different pre-sowing processes, the fresh and dry pyrenes mass, remaining fibers adhered to the pyrene and seedling emergence were evaluated. The pulper removed an average of 45% more pyrene pulp than the concrete mixer. However, these methodologies did not result in differences in the emergence of plants, which was affected only by the pre-depulping treatment, with superiority in the use of fresh fruits. Thus, the pulper was more efficient for the removal of pulp and pulp fibers than the concrete mixer. The depulping method did not significantly affect the pyrenes mass. Higher seedlings emergence values were observed for the fresh fruits that were pulped and sown immediately. Fermentation and partial pulp dehydration exert a negative influence on seedling emergence.

Abstract The objective of this study was to analyze the effect of different calcium chloride concentrations on the post-harvest conservation of jabuticaba variety Pingo de Mel at different storage temperatures. The fruit were collected 30 days after the anthesis and subjected to immersions in calcium chloride solution at different concentrations (0%, 2%, 4%, and 6%) for 30 minutes at room temperature. Then, the fruit were dried and packed in polypropylene bags and incubated in a chamber at different temperatures (6 °C, 12 °C, and 25 °C). Samples were analyzed at time 0 and every two days, up to 12 days of storage. No effect of different calcium chloride concentrations was observed in the fruit characteristics at different storage temperatures over time. During storage, an increase of soluble and total pectin contents, antioxidant activity, CO2, total sugars, acidity, and weight loss was observed. Higher storage temperatures affected both the increase in weight loss, pH, and O2 production and the reduction of vitamin C content. Refrigeration was important for the post-harvest conservation of jabuticaba variety Pingo de Mel , once the fruit stored at 6 °C suffered minor variations with improvements or little changes during the 12 days.

Abstract The objective of this study was to characterize jabuticaba fruits for their proximate composition, minerals profile, and predominant sugars during fruit physiological development. The fruits were harvested ten days after anthesis (DAA) until maturity, at intervals of four days between collections. The period between anthesis and maturity was 34 days. An increase in moisture was observed, as for protein and lipids up to 18 DAA, with subsequent reduction until ripening, while an opposite behavior was observed for ash and carbohydrates levels. In general, minerals decreased throughout the fruit development. Regarding the carbohydrates profile, fructose showed the highest concentration, followed by glucose and sucrose, respectively, with an increase during ripening for all sugars. Whereas the sweet taste of fruit is a major factor for both consumption in natura and processing, we observed that jabuticaba fruits harvested 34 days after anthesis presented the best results.

Abstract The aim of this study was to evaluate in sherbet formation the effects of sugar, milk, and jambolan pulp quantity on the overrun, color, physicochemical characteristics, microbiological characteristics, and acceptance of the experimental sherbets, in addition to evaluating the bioactive compounds of the selected product. Seven formulations were established through the Simplex method. The formulation with 20g 100g-1 sugar, 45g 100g-1 milk, and 35g 100g-1 jambolan pulp was selected (S5) because it was included among the most accepted sensorially (S4 and S5), and also presented higher overrun, chroma, SST/AT, and pH than S4, receiving the scores 8.0; 8.2, 6.4 and 7.1 and 6.1, respectively, for appearance, color, flavor, texture, and odor. The selected sherbet presented a high total phenolic compound content of 192mg gallic acid g-1, and a percentage of DPPH inhibition of 73%. It is concluded that it is possible to produce jambolan sherbet with desirable physical, chemical, microbiological, and sensory characteristics, which can increase the possibilities of applying the fruit as an ingredient in the edible ice cream industry.

Resumo O buriti é uma palmeira brasileira que se destaca pela sua beleza e pelos seus múltiplos usos na alimentação humana, apresentando elevado valor nutricional. Visando ao seu maior aproveitamento, foi realizada a elaboração de geleia de buriti. O produto foi caracterizado em seu aspecto físico-químico, por meio de análises de: composição proximal, fibras, valor energético, sólidos solúveis totais, pH, acidez total titulável, potencial antioxidante e vitaminas lipossolúveis. A geleia apresentou potencial antioxidante, além de consideráveis teores de vitaminas A e D, podendo também ser considerada fonte de fibras. Logo, o processamento de buriti, na forma de geleia, é mais uma alternativa para o seu aproveitamento e para a agregação de valor ao fruto do cerrado, além de este possuir valor nutricional.

Abstract Buriti is a Brazilian palm that stands out for its beauty and its multiple uses as a food for humans, with high nutritional value. Aiming to maximize its exploitation, buriti jelly was produced. A physicochemical characterization of the product was carried out by determining the proximate composition, fibre, energy, total soluble solids, pH, titratable acidity, soluble vitamins and the antioxidant potential. The jelly showed potential antioxidant activity, as well as considerable amounts of vitamins A and D, and can also be considered a source of fibre. Thus, the processing of buriti in the form of jelly is one more alternative for the exploitation and value aggregation of a Brazilian savanna fruit, as well as having nutritional value.