This study investigated the influence of grape stalk (GS) from the Bordo grape variety (Vittis labrusca L.) as a reinforcing agent, and pink pepper (Schinus terebinthifolius Raddi) extract (PPE) as an antioxidant, in cassava starch (CS)‐glycerol (GLY) films. The developed biodegradable films were characterized according to structural, barrier, mechanical, antioxidant and optical properties, as well as biodegradability and compared to both the control and blank films. Films containing a high GS content exhibited a significant increase in tensile strength (TS) values by 73%, whereas the films containing a high PPE content exhibited an important increase elongation (ELO) values by 20%, comparing to the control film (CO). The films containing 5.52% v/v of PPE presented an improving on antioxidant activity and barrier properties, leading DPPH and ABTS percentual radical scavenging activity by 51.79% and 58.18%, and decreasing water vapor permeability and solubility by expressive values of 34.11% and 79.43%, respectively. According to the results obtained in this study, the films using GS and PPE exhibited valuable characteristics and are an alternative for applications as a promising biodegradable packaging material.
The food industry always searches for innovation, product improvement, quality and customer satisfaction. On relation to sweeteners, this search had an expressive increase in recent times due to the increase of diseases caused by the excessive consumption of sugar. Most tabletop sweeteners marketed in Brazil have bulking agents with characteristics not appreciated by consumers, substances that can cause intolerance such as lactose or caloric products such as maltodextrin (4 kcal/g). Considering this problem, the aim of the research was to develop a natural sweetener, without contraindications, using the erythritol / stevia blend to compose the formulation. Three formulations (standard, 10% sweeter and 10% less sweet) were developed, that in the sorting test there was no preferred sample, being able to opt for the formulation with lower cost-10% less sweet. At the same time, a semistructured questionnaire was applied, characterizing the consumers of sweeteners. Df all respondents, 43% used sweeteners. The variable that increases the chance of its consumption is "being overweight"; when associated with the variable "overweight family", the chance of consumption is greater. Another proof was that more than 40% of users search for natural substances in their sweetener, strengthening the possibility of developing a natural sweetener.
use of this fruit, such as the technique known as foam mat drying, which is simple and suitable for liquid and pasty products. The method consists of mixing the pulp with foaming agents and then dewatering the foam in trays arranged in conventional dryers, which makes it possible to dehydrate the pulp in relatively short drying times. Aiming at the growth of the vegan public, for which the application of adjuvants of plant origin is essential, the objective of the present work is to evaluate the effects of the foam formulation on the drying process in a foam mat of acerola pulp, using additives of vegetable source, such as soy protein isolate (SPI), distilled monoglycerides and mono and diglycerides fatty acid esters with lactic acid, both derived from vegetable oils and used in quantities permitted by the current legislation. The diffusivity coefficients ranged from 1.33x10-9 m2/s to 2.79x10-9 m2/s in a time of 105 to 135 minutes, and some treatments had the formation of lumps in the powder. Among the additives tested, the best one was SPI, which, when applied at a concentration of 1% in the acerola pulp, provided loosen powder with favorable characteristics.
Engenharia econômica. 2. Engenharia de produção. 3.Pesquisa operacional. I. Título.CDD 658.5 Elaborado por Maurício Amormino Júnior -CRB6/2422 O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. 2018 Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.
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