Search results for " Fruit"

Characterization of fruits of four different lemon cultivars, Collected in the northern coast of sicily

2015

The present work is focused on the study of the characteristics of the fruits of four main lemon (Citrus limon L. Burm.) varieties cultivated in Sicily: 'Femminello Comune', 'Monachello', 'Zagara Bianca', and 'Femminello Santa Teresa'. Physical and chemical properties as well as aroma compounds were analysed as quality discrimination factors. Also the effect of the storage conditions was verified. Standard experimental techniques were used to determine: weight, longitudinal and transverse diameters, pH, titratable acidity, total soluble solids, juice percentage and total polyphenols. The volatile component was analysed by i) a gas chromatographer with a mass spectrometer detector and ii) an…

Fruit Ripening Evolution in Settembrina di Leonforte and Gialla Tardiva di Leonforte Peach [Prunus persica (L.) Batsch] Ecotypes

2015

The aim of this research was to define the most appropriate harvesting time for the late ripening peach ecotypes Gialla Tardiva di Leonforte and Settembrina di Leonforte. Farmers used to apply a paper bag to each fruit to protect it from Mediterranean fruit fly egg-laying. The use of this cultivation practice reduces the use of pesticides with a major impact on consumer choice, but makes it more difficult to identify fruit commercial harvest time. The study was carried out using destructive quality indexes and the DA-Meter. The results showed a good correlation between DA-Meter classes and the chemical and physical characteristics of the fruit, giving useful information on fruit ripening an…

Evolution of qualitative characteristics during blueberry fruit storage in a modified atmosphere

2015

The objective of this work was to evaluate the performance of different films to maintain MAP conditions for storing ‘Duke’ blueberries by verifying the evolution of qualitative traits of berries. The fruits were picked manually, individually deposited in polyethylene baskets and immediately transferred (1 h) to the laboratory under chilled conditions (10°C). The experimental storage units consisted of a pallet bag of two different types of film, polyethylene (100 μm) and a biobased film derived from starch (50 μm). The O2 and CO2 transmission rates, measured according to the ASTM F 2622-08 and ASTM F 2476-05 methods at 38°C and 90% RH, were, 2642 and 10654 [cm3/(m2·24 h)], respectively, fo…

Effect of mucilage edible coating on fresh-cut nectarine cultivar ‘Big Bang’

2022

The mucilage (OFI) obtained from cladodes of cactus pear (Opuntia ficus-indica) is useful to produce natural edible coatings to improve the shelf life of fruits. Edible coatings could be used to extend the shelf life of fresh-cut for products. The aim of this study was to evaluate the effect of (OFI) on quality of ‘Big Bang' nectarine slices. After cutting, nectarine slices were dipped in three different solutions: 1) distilled water, mucilage, glycerol (MC); 2) distilled water, mucilage, glycerol, Tween 20 (TW); 3) distilled water as control (CTR) and were stored for 3, 5, 7 and 12 days at 5°C and 90% RH, in polyethylene terephthalate (PET) packages under passive modified atmosphere condit…

Relationship between tree water status and physiology, yield, and fruit quality in the table olive (Olea europaea sativa L.) cultivar ‘Nocellara del …

2012

Although the olive (Olea europaea sativa l.) is considered a xerophytic species, long periods of water stress and high temperatures during summer months can greatly affect plant physiology and productivity. In recent years, the use of plant-based water status indicators have become popular in the study of plant-water relationships and in the design of irrigation programs, particularly midday stem water potential (ψstem). The current trend in the irrigation of olive trees is in the development of Deficit Irrigation (DI) systems whereby the water is applied at a rate which is lower than evapotranspiration needs, resulting in only very small reductions in yield. Rather than working towards min…

Effects of 1-MCP on post harvest quality and internal browning of white-flesh loquat fruit during cold storage

2017

Introduction – Treatments with 1-methylcyclopropene (1-MCP), an inhibitor of ethylene perception, were investigated on white-flesh loquat fruit to extend its shelf life and to prevent chilling injury. Ma- terials and methods – The loquat (Eriobotrya japonica Lindl.) white-flesh fruits (cv. Claudia) were submitted to applications of 1-MCP at 1 °C for 20 h and at concentrations from 1 to 5 μL L . The treated fruits were stored at 1 °C for 21 days before removal to 20 °C for ripening (shelf life). Fruit quality was analyzed at harvest, at the end of each storage period (7, 14, 21 days at 1 °C). Results and discussion - The 1-MCP treatment slowed fruit softening depending on concentration, and …

Monitoring the Shelf-Life of Minimally Processed Fresh-Cut Apple Slices By Physical–Chemical Analysis and Electronic Nose

2014

Fresh-cut apples, in slices or in cubes, are minimally processed products, which are currently collecting a great interest by fruit marketers for their promising diffusion. Their shelf life, from a microbiological point of view, has been fixed about 2 or 3 weeks under refrigeration. However in a few days they undergo biochemical degradations with production of off-flavors and texture breakdown. In this work, the change of aromatic fingerprint of apple slices packaged in air and in a modified atmosphere (with 100% N2) and stored at 4°C was measured, by using a commercial electronic nose. The obtained data were also compared with sensory evaluation of judge’s panel. Moreover, quality paramete…

Water status, growth, yield and fruit quality of 'Valencia' orange trees under partial root-zone drying

2011

Effect of Opuntia ficus-indica Mill. mucilage edible coating on quality of fresh-cut cactus pears during cold storage

2022

Cactus pear [(Opuntia ficus-indica (L.) Mill.] consumption and marketability are limited by the presence of spines and glochids on the fruit surface. Minimally processed cactus pear fruits are characterized by a short shelf life due to the peel removing that increases tissue senescence and deterioration. The aim of this study was to evaluate the effect of O. ficus-indica (OFI) mucilage edible coating on quality, nutraceutical, and sensorial parameters of minimally processed cactus pear. OFI fruits were collected in mid-October and were quickly moved to the nearby laboratory. One-year-old cladodes were sanitized, sliced into squares, and cooked in a microwave oven and mixed using a homogeniz…

Mass modelling by dimension attributes for mango (Mangifera Indica cv. Zebdia) relevant to post-harvest and food plants engineering

2016

Mass identification of mango fruits from their dimension attributes remains challenging. This is because of the unregulated shapes of these fruits. Therefore, this research aims at creating mathematical models that can demonstrate the relationship between the fruit‘s mass and dimension attributes. Hence, these models can be used in post-harvest engineering systems. The researchers used 100 mango fruits (Mangifera indica cv. Zebdia) to determine the mathematical relationship between the fruits‘ weight and dimension attributes. The researcher measured and photographed the dimensions of these fruits and processed the image captured for each fruit using a computer program to find the fruit‘s di…