Strawberries show a short post-harvest conservation period. To improve it, the effect of different post-harvest storage temperatures, conservation methods and three different storage periods were tested on ‘San Andreas’ strawberry, right after harvest. The experiment consisted of a three factorial 2 x 5 x 3 (temperatures x methods x storage periods), arranged in a completely randomized design (CRD). Four replications were used for each treatment, each with five sampling units. The treatments tested were: storage temperatures - 1°C and 18°C (T1 and T2); conservation methods - sodium hypochlorite 0.5% (C1), potato starch film 6% + sodium hypochlorite 0.5% (C2), cassava starch film 6% + sodium hypochlorite 0.5% (C3), UV-C radiation (C4), and control (no treatment) (C5); Storage period - 3, 6, and 9 days (D1, D2, D3, respectively). The parameters assessed were flesh firmness, color (hue angle, chroma, and luminosity), soluble solids (SST) and mass loss. Fruit kept at a temperature of 1°C showed better traits than those stored at 18°C, regardless of the method and storage period. Among the conservation methods tested, only UV-C and sodium hypochlorite improved some attributes (firmness and SST) when associated with refrigeration at 1°C. The use of potato and cassava starch is not as expected since they do not improve conservation and the total soluble solids contents.
Most commercial apple orchards are established on either Marubakaido (Malus prunifolia Borkh.) (high vigor), M-9 (Malus pumila) (low vigor), or a combination of both rootstocks through the intergrafting technique. The Geneva ® Series rootstocks were developed as an alternative to orchards modernization. The vigor of rootstocks influences the anatomical xylem formation and, therefore, the canopy cultivar's hydraulic conductivity. When affected by embolism, hydraulic conductivity harms plant metabolism, reducing crop yield and fruit quality. This study aimed to evaluate four Geneva ® Series rootstocks with potential use in southern Brazil, in terms of hydraulic conductivity (K) and percentage loss of conductance (PLC), during the winter period in two different years. The G.213 rootstock presented the best performance for the variables analyzed; however, higher values of xylem functionality loss were observed in G.814.
As tangerinas representam o segundo maior grupo de frutos cítricos produzidos mundialmente. No Brasil, sua produção está concentrada na região Sudeste e Sul do país. A variedade mais cultivada nos pomares brasileiros é a tangerina ‘Ponkan’, muito apreciada para o consumo in natura. Nos últimos anos houveram mudanças no perfil dos consumidores e um aumento na busca por alimentos livres de resíduos. Novos métodos de conservação alternativos, como a utilização de recobrimentos e tratamentos físicos no armazenamento dos frutos vem sendo estudados. O objetivo deste trabalho foi avaliar a utilização dos recobrimentos fécula de mandioca e gelatina, aliados a aplicação de radiação UV-C, para prolongar a vida útil de tangerinas ‘Ponkan’ durante o armazenamento. O experimento foi inteiramente casualizado contendo como fatores de tratamento os recobrimentos fécula de mandioca 3% e gelatina, a aplicação de UV-C (com e sem) e dias de armazenamento (5, 10 e 15). Os resultados demonstraram que houve aumento do pH dos frutos tratados com fécula de mandioca e gelatina, com aplicação de UV-C. A perda de massa dos frutos aumentou com o período de armazenamento e para os SST não houveram diferenças entre os tratamentos. Os atributos de coloração indicam que a fécula de mandioca foi eficiente para manter a coloração dos frutos no armazenamento. Concluiu-se que a utilização de recobrimentos de fécula de mandioca 3% e gelatina não foram eficientes para manutenção dos atributos químicos de qualidade dos frutos de tangerina ‘Ponkan’ e a aplicação de radiação UV-C não teve efeito sobre os parâmetros analisados.
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