Passionfruit (Passiflora edulis, Sims, cultivar "Sweetheart") were subject to gamma irradiation at levels suitable for phytosanitary purposes (0, 150, 400 and 1000 Gy) then stored at 8 °C and assessed for fruit quality and total ascorbic acid concentration after one and fourteen days. Irradiation at any dose (≤1000 Gy) did not affect passionfruit quality (overall fruit quality, colour, firmness...

Abstract Changes in pineapple storage temperature accelerate the increase internal browning (IB) incidence. This study aims for postharvest applications with changes affecting IB incidence and severity. research was conducted on ‘GP3’ ‘MD2’ clones when they were ripe export. The experimental a completely randomized design of temperatures (T1: at 7°C 30 days T2: 28 followed by 16°C 2 days), (‘GP...

Aroma is one of the most important indicators grape quality. Girdling and foliar fertilization with K (K2O) are common agronomic practices applied to improve berry quality in production. However, little known about its effect on accumulation biosynthesis entire aromatic profile. Our study was aimed explore influences girdling (alone or combination) general properties, phenolic composition, vola...

Biospeckle is nondestructive optical technique based on the analysis of variations of laser light scattered from biological samples. Biospeckle activity reflects the state of the investigated object. In this study the relation of biospeckle activity (BA) with firmness, soluble solids content (SSC), titratable acidity (TA) and starch content (SC) during the shelf life of seven apple cultivars wa...

Environmental variance components were estimated for berry ripening time (BRT), berry weight (BW), soluble solids concentration (SSC), titratable acidity (TA), and deformation at the ®rst major peak (DFP) and maximum force (MF) in penetration tests of berry ̄esh in grapes (Vitis vinifera L. and V. labruscana Bailey). The variance among berries within clusters was largest among environmental var...

Epidemiological studies suggest that consumption of fruit rich in phenolic compounds is associated with health-protective effects due to their antioxidant properties. For these reasons quality evaluation has become an important issue in fruit industry and in breeding programs. Phytochemical traits such as total phenolics, flavonoids, anthocyanins, L-ascorbic acid, sugar content and relative ant...

Abstract This study aimed to establish if there is any evidence that soil mineralogical and/or chemical composition influence the composition and quality of wine grapes. In the initial phase of the study, soils and grapes were sampled in two riesling vineyards in South Australia. Soils were analysed for a wide range of total major and trace elements; soil cation extracts and grape juices were a...

Standard methods for determining quality and maturity are time- and labor-consuming and generally measure individual criteria at a specific time, without considering relationships among quality parameters. To propose a rapid and nondestructive analysis method describing multidimensional quality variables, an experiment was undertaken with mature green to overripe tomato fruits found on the Nort...

The Lewis acidity of isolated framework metal sites in Beta zeolites was characterized with 15N isotopically labeled pyridine adsorption coupled with magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. The 15N chemical shift of adsorbed pyridine was found to scale with the acid character of both Lewis (Ti, Hf, Zr, Nb, Ta, and Sn) and Brønsted (B, Ga, and Al) acidic heteroato...

A strawberry Multi-parent Advanced Generation Intercrosses (MAGIC) population, derived from crosses using six strawberry cultivars was successfully developed. The population was composed of 338 individuals; genome conformation was evaluated by expressed sequence tag-derived simple short repeat (EST-SSR) markers. Cluster analysis and principal component analysis (PCA) based on EST-SSR marker pol...