RESUMO Objetivou-se avaliar a vida útil do minitomate (Lycopersicum esculentum Mill.), variedade Sweet Grape, produzido em hidroponia e armazenado sob condição ambiente e refrigerada, em diferentes embalagens. Adotou-se o delineamento experimental inteiramente casualizado, em que os tratamentos consistiram na combinação da condição de armazenamento: ambiente (a) e refrigerada (r), e tipo de embalagem: filme flexível de policloreto de vinila (PVC); polietileno de baixa densidade (PEBD); biofilme de fruto de Solanum lycocarpum A.St.-Hil (lobeira) (BFL); biofilme de fécula de mandioca (BFM); cera de Copernicia prunifera (carnaúba) (CC), e sem embalagem - testemunha (T). As análises físico-químicas e sensoriais foram realizadas no início (dia zero), aos 8, 19 e 33 dias de armazenamento (DA). Os frutos submetidos às embalagens PVCr, PEBDa, PEBDr e CCr apresentam vida útil aceitável de 33 dias de armazenamento. A aplicação de biofilmes de amidos de fruto de lobeira e mandioca não é eficaz no controle da perda de massa fresca. A condição refrigerada é a melhor forma para a conservação pós-colheita dos frutos de minitomate. O tratamento CCr é o que mais agrada os julgadores, e o PCV, o de maior índice de rejeição.

ABSTRACT This paper aims at evaluating the shelf life of mini tomatoes (Lycopersicum esculentum Mill.) cultivar ‘Sweet Grape’, grown in hydroponics, and stored under environmental and refrigerated conditions inside different packages. We adopted a completely randomized design, in which treatments were combinations of storage conditions: environment (e) and refrigerated (r) with packaging: polyvinyl chloride film (PVC); low-density polyethylene (LDPE); biofilm of tomato fruit of Solanum lycocarpum A.St.-Hil (lobeira) (TFB); cassava starch biofilm (CSB); carnauba wax (Copernicia prunifera) (CW), and without packaging - control (C). Physicochemical and sensory tests were carried out at the beginning (day zero), and at 8, 19, and 33 days of storage (DS). Fruit stored inside PVCr, LDPEe, LDPEr, and CWr had an acceptable shelf life of 33 days. The use of cassava and tomato starches were not effective in controlling fruit fresh weight loss. ‘Sweet Grape’ tomato postharvest conservation was enhanced under refrigerated conditions. The sensory evaluation results revealed that CWr treatment most pleased appraisers, while PCV had the highest rejection rate.

The objective of this research was to determine the yield and postharvest quality of tomato "Dominador" produced inside and outside the greenhouse, irrigated by the system of surface and subsurface drip with wastewater and natural water. The experimental design was a randomized block 3x2, the portions being formed by the water quality (wastewater, water for conventional fertigation and natural water), with four repetitions. There was no significant effect of cultivars within and outside the greenhouse on the productivity index, fruit size and quality, except in the ratio of soluble solids/titratable acidity, where the highest value (2.46) was for growing inside the greenhouse, and significant increases (102%) during the storage period (fourteen days), indicating a superior quality during the storage period. The pH of the fruits produced within the greenhouse ranged from 3.95 to 4.31, and values for tomatoes produced outside the greenhouse ranged from 4.00 to 4.22 in pH during the storage. The soluble solids increased and titratable acidity was reduced during the storage period for all treatments. The tomato had shelf-life of seven days for all treatments in both cultivation environments, and stored at 27°C and 60% relative humidity.

El objetivo de este trabajo de investigación fue determinar el rendimiento y calidad post-cosecha de tomate "Dominador" producido en el interior y exterior de invernadero, irrigado por el sistema de goteo superficial y sub-superficial con agua tratada y agua natural de pozo. El planeamiento experimental fue el de bloques casualizados 3x2, siendo las parcelas constituidas por la calidad de agua agua residual, agua para ferti-riego convencional y agua natural), con 4 repeticiones. No hubo efecto significativo en el interior y exterior del invernadero sobre la productividad, (la calidad de frutos, excepto en la relación de sólidos solubles/acidez de titulación, donde el mayor valor de 2,46, fue para cultivados en el interior del invernadero, y con incremento significativo durante el período de almacenamiento (catorce días) que fue de 102%, lo que indica una calidad superior durante el período de almacenamiento. Los valores de pH de los frutos producidos en el interior y exterior del invernadero durante el periodo de almacenamiento indicaron como frutos ácidos. Los sólidos solubles se elevó y la acidez titulación se redujo durante el periodo de almacenamiento para todos los tratamientos. El tomate presentó vida útil post-cosecha de siete días para todos los tratamientos en ambos ambientes de cultivo y almacenamiento a 27ºC y 60% de humedad relativa.