Effect of processing parameters on some physicochemical properties, sugar profile and rheological characterization of apricot sauce

In this study, effects of processing parameters including blanching temperature, time and sieve diameter on some physicochemical and rheological properties and sugar profile of apricot sauce were investigated. Eight apricot sauce samples were manufactured at different blanching temperatures (85 and 95 degrees C), blanching times (5 and 10 min) and sieve diameters (1 and 3 mm). The sauce samples were stored at + 4 degrees C for 60 days and analyses were performed at intervals of 15 days. It was observed that the processing variables and storage period affected the properties of samples significantly (p 0.97)

Efeito de diferentes temperaturas na qualidade de mandioquinha-salsa minimamente processada Effect of different temperatures on the quality of fresh-cut Peruvian carrot

O objetivo do presente trabalho foi avaliar a vida útil de mandioquinha-salsa 'Amarela de Senador Amaral' minimamente processada e armazenada em três temperaturas de armazenamento. As raízes foram descascadas manualmente, fatiadas (±1 cm de espessura), imersas em solução de dicloro isocianurato de sódio 100 mg L-1 por 15 minutos e acondicionadas em embalagem rígida de polipropileno (15 x 11,5 x 4,5 cm). As embalagens, contendo cerca de 150 g de raízes minimamente processadas, foram armazenadas a 0±1ºC, 5±1ºC ou 10±1ºC durante 15 dias, sendo realizadas análises a cada 3 dias. O delineamento experimental foi inteiramente casualizado em fatorial 3 x 6, sendo 3 temperaturas de armazenamento e 6 períodos de armazenamento, com 3 repetições. O armazenamento a 0ºC determinou, ao longo do armazenamento, aumento nos valores de L* e b*, menores valores de a*, menor atividade da peroxidase, polifenoloxidase, poligalacturonase, solubilização péctica e taxa respiratória, sendo a temperatura mais indicada para o armazenamento da mandioquinha-salsa 'Amarela de Senador Amaral' minimamente processada.<br>The shelf life of fresh-cut Peruvian carrots 'Amarela de Senador Amaral', stored under three temperatures, was evaluated. The roots were peeled manually, sliced (±1 cm thick), immersed in a solution of sodium dichloroisocyanurate 100 mg L-1 during 15 minutes and packed in rigid polypropylene package (15 x 11.5 x 4.5 cm). The packages containing around 150 g of fresh cut roots were stored under 0±1ºC, 5±1ºC or 10±1ºC during 15 days. The analyses were performed every 3 days. The experimental design was completely randomized in a 3 x 6 factorial (3 storage temperature) and 6 periods of storage, with three replicates. The storage at 0ºC provided higher L* and b* values, lower a* values, lower peroxidase, polyphenoloxidase and polygalacturonase activity, pectic solubilization and respiration rate. This temperature is the most proper for the storage of the fresh-cut peruvian carrot 'Amarela de Senador Amaral'