Total phenolic compounds (TPC) extraction from the seed and total monomeric anthocyanins (TMA) extraction from the skin of “Sabará” jabuticaba were optimized with simplex lattice designs for solvent mixing, and the extraction time was optimized by univariate design. The optimum conditions for the extraction method were ethanol:water (60:40 v/v) solvent for TPC (seed) and methanol:water:acetic acid (80:20:0.5 v/v/v) solvent for TMA (skin). For both compound groups, the optimum extraction time was 30 min. The TMA yield for the skin of the “Sabará” variety was 1172.16 mg cyanidin-3-glycoside equivalents per 100 g freeze-dried sample, and for TPC in the seed, it was 86.50 mg gallic acid equivalents per 1 g freeze-dried sample. Both optimized extraction protocols proved to be extremely fast, simple, inexpensive and to have excellent extraction performance. The optimized protocols were compared with two other methods described in the literature and they were also applied to study the TMA contents in skin and the TPC contents in seed of five other varieties of jabuticaba, harvested in 2014 and 2015.

A introdução de uma variedade cítrica numa nova área baseia-se principalmente na adaptação edafoclimática associada às propriedades físico-químicas dos frutos, necessitando de mais estudos sobre os aspectos sensoriais para conhecer as preferências do consumidor. Desta forma, o objetivo deste estudo foi avaliar a aceitação de laranjas ‘Navelina’ [Citrus sinensis (L.) Osb.] pelos consumidores e a intenção de compra, através da análise sensorial. Após colheita, foram analisadas as características físico-químicas dos frutos. Seguidamente, 131 julgadores, não treinados, foram questionados para avaliar as amostras da laranja ‘Navelina’, através do teste de aceitação realizado em cabines individuais com luz branca, de acordo com os atributos sensoriais do fruto: aparência, firmeza, aroma e sabor. No final, foi também questionado a intenção de compra do fruto. Os dados foram submetidos à Análise em Componentes Principais para descrever os resultados e o mapeamento das preferências interna. De acordo com os resultados, os frutos da Navelina apresentam excelentes atributos sensoriais e características físico-químicas associadas ao aspecto sem sementes, exigidas pelos consumidores que expressam alta preferência pelo seus frutos, principalmente em relação aos atributos de aparência e sabor, atendendo aos requisitos do mercado consumidor.

The introduction of citrus variety in new areas is mainly based on the edaphic and climatic adaptation linked to the physical-chemical properties of the fruits, requiring more studies about the sensory aspects to comprehend the consumer preferences. In this way, the aim of this study was to evaluate the acceptance of ‘Navelina’ [Citrus sinensis (L.) Osb.] navel oranges by consumers and the purchase intent, through sensory evaluation. To perform the harvest, the fruits were first analyzed in relation to the physical-chemical characteristics. Then, 131 untrained panelists representing the consumers were asked to evaluate samples of ‘Navelina’ through the acceptance test performed in individual booths with white light, according to the fruit attributes: appearance, firmness, aroma and taste. At the end, they were asked about the purchase intent of the fruit. The data was subjected to the Principal Component Analyses in order to describe the results and internal preference mapping. According to the results, the ‘Navelina’ fruits present excellent sensory attributes and physical-chemical characteristics associated to the seedless aspect, which are required by the consumers whose express high preference for its fruits, mainly based in the attributes of appearance and taste, attending to the standard requirements of the consumer market.

O gênero Oncidium apresenta cerca de 315 espécies e centenas de híbridos. O melhoramento genético com espécies nativas, de potencial ornamental, é uma importante estratégia para garantir melhor adaptabilidade das cultivares obtidas às condições brasileiras de cultivo. Dentre elas, a espécie brasileira Oncidium sarcodes, se destaca por longas hastes com flores grandes e amarelas, com máculas marrons. Objetivou-se nesse trabalho caracterizar progênies obtidas da hibridação entre oncidiums, de modo a selecionar uma potencial cultivar. Plantas selecionadas de O. sarcodes foram utilizadas como parental feminino e O. Aloha 'Iwanaga' como parental masculino. Para o cruzamento utilizou-se polinização manual controlada e as sementes obtidas desse cruzamento foram germinadas in vitro. Após o crescimento in vitro e aclimatização das plântulas em casa de vegetação, as mesmas foram transplantadas para vasos com volume de 1000 mL utilizando como substrato casca de pinus e fibra de coco, na proporção de 1:1 (v/v). Para a descrição morfológica dos híbridos selecionou-se 10 progênies, nas quais foram avaliadas as características fitométricas da parte vegetativa e das inflorescências. O florescimento dos híbridos ocorreu aos 48 meses após a germinação, entre os meses de dezembro a janeiro, com flores durando entre 25 e 30 dias. O cruzamento trouxe às flores maior equilíbrio e simetria entre os verticilos florais. As sépalas e as pétalas apresentam coloração amarelo ouro com máculas marrons, com limite bem determinado entre as cores.

Oncidium genus has about 315 species and hundreds of hybrids. Breeding of native species with ornamental potential is an important strategy to ensure a better adaptability of cultivars to Brazilian conditions. Among them, the Brazilian species Oncidium sarcodes stands out for long stems with large yellow flowers with brown stains. The aim of this work was to characterize the progenies resulting from the oncidiums hybridization in order to select a potential cultivar. Selected O. sarcodes plants were used as the female parental and O. Aloha 'Iwanaga' as the male parental. Pollination was manually controlled and the obtained seeds were germinated in vitro. After seedling establishment in vitro and acclimatization in the greenhouse, they were transplanted to plastic pots with volume of 1000 mL using as substrate pine bark and coconut fiber 1:1 (v/v). For the morphological description of the hybrids, 10 progenies were selected to evaluate the characteristics of vegetative development and inflorescences. Flowering occurred 48 months after germination, from December to January, flowers with durability of 25 to 30 days. The crossing brought flowers to a greater balance and symmetry between the verticils. The sepals and petals have yellow gold color with brown spots, with well-defined limits between the colors.