Comprehensive analysis of the internal structure and firmness in American cranberry (Vaccinium macrocarpon Ait.) fruit.
BACKGROUND: Cranberry (Vaccinium macrocarpon L.) fruit quality traits encompass many properties. Although visual appearance and fruit nutritional constitution have usually been the most important attributes, cranberry textural properties such as firmness have recently gained importance in the industry. Fruit firmness has become a quality standard due to the recent demand increase for sweetened and dried […]
Metabolite characterization of different palm date varieties and the correlation with their NO inhibitory activity, texture and sweetness.
The aim of this study was to examine the variation in metabolite constituents of five commercial varieties of date fruits; Ajwa, Safawi and Ambar which originated from Madinah, the Iranian Bam and Tunisian Deglet Noor. The differences of metabolome were investigated using proton nuclear magnetic resonance (1H NMR) spectroscopy combined with multivariate data analysis (MVDA). […]
A comprehensive look at the effect of processing on peanut (Arachis spp) texture.
BACKGROUND: Relationships between process and peanut texture have been only studied in Hypogaea species, and focused on very limited processing conditions. In this study, 94 samples were prepared from a combination of 12 raw materials (Arachis Hypogaea and Fastigiata cultivars) and 11 roasting conditions (maceration in water, aqueous glucose and at different pH followed by […]
Effects Of Oil Content On The Sensory, Textural And Physical Properties Of Pecan Butter (Carya illinoinensis).
It has been difficult to produce acceptable pecan butters as the high oil content results in a product that flows and separates too easily. The objective of this work was to create pecan butters with varying oil levels (50-70%) and determine which would give the most acceptable product. Consumers rated pecan butters with 55-60% oil […]
Quality changes of stabilizer-free natural peanut butter during storage
The storage stability of preservative-free peanut butter was evaluated for changes in physicochemical quality including moisture content and water activity, microbiological properties, oxidative stability and textural quality in terms of spreadability and firmness. The study was conducted for 16 weeks at storage temperature of 10, 25 and 35 °C on natural and pure peanut butter […]
Sensory and instrumental texture assessment of roasted pistachio nut/kernel by partial least square (PLS) regression analysis: effect of roasting conditions.
Roasting is an important step in the processing of pistachio nuts. The effect of hot air roasting temperature (90, 120 and 150 °C), time (20, 35 and 50 min) and air velocity (0.5, 1.5 and 2.5 m/s) on textural and sensory characteristics of pistachio nuts and kernels were investigated. The results showed that increasing the […]
Maintaining the quality of unripe; fresh hazelnuts through storage under modified atmospheres.
Unripe hazelnuts are used for fresh consumption due to their delicate taste; the tenderness of the kernel and the fact that they are easy to shell manually without having to use tools. This report focuses on the possibility of storing unripe; fresh hazelnuts (Corylus avellana L.; cv. Tonda Gentile Romana) under modified atmospheres; with the […]
Date syrup: effect of hydrolytic enzymes (pectinase/cellulase) on physico-chemical characteristics; sensory and functional properties.
Abstract: This work is a contribution to give value addition to second grade dates (with hard texture) by the production of enzymatically treated syrup with high commercial value. It was observed that the pulp: water at ratio 1:3 treated with 50 U of pectinase and 5 U of cellulase during 120 min at 50°C gave […]
Integrated approach for interpreting browning rate dependence with relative humidity in dehydrated fruits
Maillard reaction is relevant to define dehydrated food stability. The objective of this work was to evaluate the browning development in freeze-dried fruits as a function of relative humidity (RH) in relation to the physical properties of fruit materials. Intact tissue discs of melon and pear were freeze-dried and equilibrated in a broad RH range. […]
Quality changes in macadamia kernel between harvest and farm-gate.
BACKGROUND: Macadamia integrifolia; Macadamia tetraphylla and their hybrids are cultivated for their edible kernels. After harvest; nuts-in-shell are partially dried on-farm and sorted to eliminate poor-quality kernels before consignment to a processor. During these operations; kernel quality may be lost. In this study; macadamia nuts-in-shell were sampled at five points of an on-farm postharvest handling […]